Appliance for repairs of local damage of laminated glasses, particularly glasses of cars and other transportation means

Abstract

The invention relates to an appliance for repairs of local damage of laminated glasses consisting of a body with a base fitted with circumferential elastomer gasket for underpressure suction to the glass. The substance of the invention is that a closing member of an overflow valve for underpressure supply to a repair compartment is arranged so that when closing, it moves in the underpressure suction direction and pushed to a seat by generated pressure. The repair compartment is connected directly with the underpressure source via the overflow valve. A fixing compartment is connected, with the underpressure source independently. To interconnect underpressure/pressure, a lid with boreholes is used as well as a flat gasket with holes and a shape groove.

Claims

1. An appliance for repairing a local damage area of laminated glass for cars and other transportation means comprising: a body with a body base fitted with a circumferential elastomer gasket forming a fixing compartment mountable to said laminated glass using underpressure from an air pump connected to said body though a first connector and connected to said body base through a side borehole to created underpressure in said fixing compartment; a removable lid is mounted inside a recess formed in said body base with a gasket mounted onto the lower surface of said removable lid to separate a repair compartment from said fixing compartment; wherein said removable lid includes a first borehole for supplying said underpressure or pressure to said repair compartment in communication with a first cylindrical borehole formed in an axial direction of said body and in connection with said first connector; wherein a second borehole in said removable lid supply glue to said repair compartment in communication with a first channel connected to a second cylindrical borehole formed in said axial direction of said body; a swiveling adjustable piston positioned in said first cylindrical borehole for controlling work position of said appliance and development of pressure in said repair compartment; a valve device consisting of an overflow valve installed in a third cylindrical borehole adjacent to said first cylindrical borehole, fitted with a control arranged outside said body and connecting said first borehole in said removable lid to control underpressure in said repair compartment guided by said swiveling adjustable piston; wherein said valve device comprising a closing member arranged when closing said overflow valve, said closing member moves in underpressure suction direction from the repair compartment; and an air supply device connected to the first cylindrical borehole to supply pressure to said repair compartment connected together through a second channel and controlled by said swiveling adjustable piston.

2. The appliance according to claim 1, wherein said first borehole in said removable lid for supplying underpressure to said repair compartment is furthermore connected to a third channel for pressure supply to said repair compartment; and said third channel is positioned between said recess for said removable lid and said first cylindrical borehole.

3. The appliance according to claim 2, wherein a flat gasket with a first hole for underpressure supply to said repair compartment is positioned in said recess between said body base and said removable lid; said first hole is arranged under an outfall of said overflow valve and provided with a shaped groove protruding above an orifice of the said first borehole in said removable lid for supplying underpressure/pressure to said repair compartment and under an orifice of said second channel for pressure supply to said repair compartment.

4. The appliance according to claim 3, wherein said flat gasket is fitted with a second hole for underpressure supply to said fixing compartment; said second hole connects to said side borehole independently to provide underpressure in said removable lid and connecting said fixing compartment with said second channel for underpressure supply to said fixing compartment in said body.

5. The appliance according to claim 3, wherein in said second borehole of said removable lid supplies glue to said repair compartment and said flat gasket has a third hole for said second borehole that connects said second borehole with said first channel in said body for glue supply to said repair compartment.

6. The appliance according to claim 5, wherein said second borehole in said removable lid and said first borehole in said removable lid are arranged in opposite areas of said removable lid; wherein said opposite areas are outside an area of projection of said overflow valve; wherein said first hole for underpressure supply to said repair compartment in said flat gasket is arranged in said area of projection of said overflow valve.

7. The appliance according to claim 1, wherein said air supply device is connected to a lower part of said cylindrical borehole in said body with an one-way suction valve installed between said air supply device and said body.

8. The appliance according to claim 7, wherein a lower part of said first cylindrical borehole is fitted with a seating that engages a seating of piston front of said swiveling adjustable piston; wherein said piston in an area above said seating of piston front is fitted with a first sealing ring and in an area of said seating of said first cylindrical borehole, said piston front is fitted with second sealing ring; and between said first and second sealing rings there is an air supply channel for air supply from said one-way suction valve.

9. The appliance according to claim 8, wherein said air supply channel terminates on a bottom of said seating of said first cylindrical borehole and formed in an axis of said swiveling adjustable piston.

10. The appliance according to claim 1, wherein said third cylindrical borehole further comprising a notch forming a third seat of said overflow valve with a seat gasket, which engages said closing member of said overflow valve; a stem connected to said overflow valve and connected with said closing member in a movable placement in said third cylindrical borehole; and connected to an overflow valve control to control said overflow valve.

11. The appliance according to claim 10, wherein at an end of said stem comprising a demountable pushing closure with a gasket; said pushing closure is arranged on a spring in an expanded upper section of said third borehole for said overflow valve; wherein said expanded upper section of said third borehole is connected with a second connector for an air pump connection using a connection channel; and said pushing closure is adapted for connection with said overflow valve control.

12. The appliance according to claim 11, wherein said overflow valve control consists of a flange fixed on said swiveling adjustable piston outside said body.

13. The appliance according to claim 12, wherein said flange is a round shape with a lower section fitting against said pushing closure with at least one pressing projection; and said pushing closure has a corresponding shape recess in an upper side to accept said pressing projection.

14. The appliance according to claim 12, wherein an upper section of said swiveling adjustable piston is fitted with a positioning head installed in an expanded section of said first cylindrical borehole and fitted with arresting pits on a circumference of said positioning head and angular positions correspond to individual angular work positions of said swiveling adjustable piston; and wherein said arresting pits house an arresting pin penetrating to said first cylindrical borehole.

15. The appliance according to claim 14, wherein said flange is fixed on said swiveling adjustable piston outside said body above said positioning head and fitted with marks corresponding to individual work positions of said swiveling adjustable piston; and wherein at least one indicator is available on said body in opposite direction to said marks.

16. The appliance according to claim 1, wherein said body base, said recess for said removable lid, said removable lid, and said flat gasket have round shape and are arrange in a coaxial direction; and wherein an axis of said overflow valve is at their central axis and an axis of said swiveling adjustable piston is parallel to said axis of said overflow valve.

17. The appliance according to claim 1, wherein said swiveling adjustable piston is fitted with an interlock groove that engages a guiding pin installed in said body and penetrating to said first cylindrical borehole; and wherein said interlocking groove consists of a circular circumferential groove for swiveling position and a vertical guiding groove for vertical movement of said swiveling adjustable piston in said first cylindrical borehole.

18. The appliance according to claim 1, wherein said body has a bin for loose liquid viscous glue; and wherein an orifice of said first channel is positioned in said bin above a level created by a glue volume required for repair of said local damage.

19. The appliance according to claim 18, wherein said bin forms a lower part of said second cylindrical borehole in said body; wherein a second stem is stalled in an upper part of said second cylindrical borehole in a vertically moving and swiveling way to form a glue supply valve; a head is connected to said stem of said glue supply valve arranged outside of said body; wherein said glue supply valve is fitted with a glue supply valve gasket and a groove for overflowing of said glue from said bin into said first channel in said body for supplying glue when said glue supply valve is in a lowered position.

20. The appliance according to claim 19, wherein said head of said glue supply valve is fitted with an arresting stop block for fitting against an arresting projection in said body in an upped position and an arresting safety pin engaging in a recess for said arresting safety pin in said body in a lowered position.

21. The appliance according to claim 19, wherein said second cylindrical borehole for said glue supply valve has a flat bottom.

22. The appliance according to claim 21, wherein said first channel in said body for glue supply has an entrance opening arrange at said bottom of said second cylindrical borehole for said glue supply valve.

23. The appliance according to claim 1, wherein an external circumference of said removable lid and an inner circumference of said body base are fitted with opposite circumferential semi-grooves, which together forming a distribution channel for underpressure distribution in said fixing compartment.

24. The appliance according to claim 1, wherein a lower part of said first cylindrical borehole is fitted with a first cylindrical seating of said first cylindrical borehole that engages a piston front seating of a piston front of said swiveling adjustable piston; wherein a first diameter (d) of said first piston front seating as well as a first diameter of said first cylindrical borehole in an area of said piston front seating are less than a second diameter (D) of an upper seating of swiveling adjustable piston as well as a second diameter of said first cylindrical borehole in an area of said upper seating; and at least one sealing ring installed at said piston front seating to seal a lowest working position of said first cylindrical borehole; a highest working position of said swiveling adjustable piston, said piston front seating with said first diameter (d) with said sealing ring of said piston front seating is arranged with free play in said first cylindrical borehole with said upper seating with said second diameter; and furthermore, said swiveling adjustable piston is equipped with a positioning head for controlling a valve device inside said body.

25. The appliance according to claim 24, wherein said positioning head is formed on said swiveling adjustable piston above said upper seating; a diameter (D.sub.H) of said positioning head is larger than said second diameter (D) of said upper seating; said positioning head is equipped with a handle; and a difference in diameter (D.sub.H) of said positioning head and said second diameter (D) of said upper seating provide an overlap with a recess for controlling said overflow valve by pressing or releasing said overflow valve in said third cylindrical borehole.

26. The appliance according to claim 25, wherein said body is equipped on an upper side with a cover with a cover borehole for said positioning head.

27. The appliance according to claim 26, wherein marks are formed on said cover providing information on a current working position of said swiveling adjustable piston.

Description

DESCRIPTION OF THE DRAWINGS

(1) The invention will be described in detail in the following Figures, where

(2) FIG. 1 shows general view on the appliance according to this invention in exploded view,

(3) FIG. 2 shows general view to the swivelling adjustable piston,

(4) FIG. 3 presents a view of the positioning head of the swivelling adjustable piston,

(5) FIG. 4 presents a view of the appliance according to this invention in B-B plane identified on FIG. 9,

(6) FIG. 5 and FIG. 6 and FIG. 7 show the appliance according to this invention in home work position,

(7) FIG. 8, FIG. 9 and FIG. 10 show the appliance according to this invention in the first work position,

(8) FIG. 11, FIG. 12 and FIG. 13 show the appliance in the second work position,

(9) FIG. 14, FIG. 15 and FIG. 16 show the appliance in the third work position when lifting the swivelling adjustable piston up,

(10) FIG. 17, FIG. 18 and FIG. 19 show the appliance in the third work position when pulling the swivelling adjustable piston down,

(11) FIG. 20, FIG. 21, FIG. 22 show the appliance in the fourth work position and

(12) FIG. 23, FIGS. 24 and 25 show the appliance during disassembly from glass,

(13) FIG. 26 shows a cross-section of the appliance without the suction valve,

(14) FIG. 27 shows a side view of the swivelling adjustable piston on the appliance without the suction valve, and

(15) FIG. 28 shows a view from above onto the appliance without the suction valve.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(16) It is understood that specific embodiments of the invention described below are indicative only and do not in any way limit the embodiments of the invention to these specific shown here. The persons skilled in the art could find or derive under routine experimental procedures either higher or lower number of equivalents to specific embodiments of this invention being specially described here. These equivalents will be included in the scope of the following claims as well.

EXAMPLE 1

(17) FIG. 1 shows general view on the appliance 1 according to this invention in exploded view for repairs of local damage to glasses 25. The appliance 1 consists of either metal or plastic body 2 roughly of cylindrical shape, consisting of cylindrical borehole 3 for steel swivelling adjustable piston 6. Close to orifices of the cylindrical borehole 3, there is indicator 12 on the body 2 and in opposite direction to this, there are marks 11 rotating to indicate individual work positions of the swivelling adjustable piston 6.

(18) Guiding pin 8 engaging in the interlock groove 7 for the swivelling adjustable piston 6 penetrates to the borehole wall 3 in the body 2. The interlock groove 7 guides the piston 6 both during swivelling as well as vertical movement of the piston 6 that is possible in the third work position only.

(19) The piston 6 has a flange 10 with handle 9 for simplified handling with the swivelling adjustable piston 6. At the same time, the flange 10 is equipped with marks 11 for identification of the piston 6 work positions and pressing projection 73, which is arranged just by the mark 11 symbolising the work position of the appliance 1 in which the overflow valve 49 is opened using the pressing projection 73 (see description below).

(20) Detailed view of the swivelling adjustable piston 6 on FIG. 2 shows groove 20 for the sealing ring 18, seating of front of the swivelling adjustable piston 6 and groove 21 for sealing ring 19 of the piston 6; in addition, FIG. 2 shows the interlock groove 7 and the positioning head 13 with arresting pits 14 on its circumference to fix the work positions of the piston 6 with the arresting pin 15. The arresting pin 15 is shown on FIG. 1 by the hole 16 that terminates to the borehole 3 in the body 2 and deployment of the arresting pits 14 along the circumference of the positioning head 13 of the piston 6 is shown in detail on FIG. 3 that shows the section of the piston 6 in the area of the positioning head 13.

(21) The body 2 is fitted with one-way suction valve 22 on the body side (see FIG. 1) that is connected using the air supply channel 74 coming through the body 2 with the borehole 3 as shown on FIG. 4.

(22) The other important components of the appliance 1 shown on FIG. 1 are the circumferential elastomer gaskets 24 arranged on the circumference of the base 23 of the body 2, lid 27 of the body 2, bolts 33 for affixing of the lid 27, the gasket of the repair compartment 31, the overflow valve 49 and the flat gasket 39.

(23) Arrangement of these components is shown on FIG. 4. The lid 27 of the body 2 is placed to the recess 26 of the base 23 of the body 2 and connected to the body 2 with bolts 33. The flat gasket 39 is inserted between the lid 27 and the recess bottom 26.

(24) When placing the appliance 1 on the place of damage 32 of glass 25, the fixing compartment 28 and repair compartment 29 are created and they are visible on FIG. 4. The fixing compartment 28 has circle ring shape, defined on external circumference with elastomer gasket 24 and on internal circumference with gasket 31 of the repair compartment 29. The repair compartment 29 has circle shape defined by the gasket 31 that forms O-ring.

(25) The repair compartment 29 and fixing compartment 28 are separated each other by vacuum as soon as the appliance 1 is pushed on glass 25 above the place of defect 32.

(26) The lid 27 of the body 2 is equipped with groove 30 on the lower side for O-ring forming the gasket 31 of the repair compartment 29 as well as the distribution channel 34 for the underpressure distribution in the fixing compartment 28 that projects up to the recess edge 26. The lid 27 is fitted with the borehole 35 for underpressure supply to the fixing compartment 28, holes 36 for bolts 33, borehole 37 for glue supply 58 and borehole 38 for underpressure/pressure supply to the repair compartment 29. The boreholes 35, 37 and the holes 36 in the lid 27 are coaxial, which is favourable for the lid 27 production.

(27) The flat gasket 39 is perforated with holes that correspond to the holes in the lid 27. These are the holes 40 for bolts 33, hole 41 for underpressure supply to the fixing compartment 28 and the hole 42 for glue 58 supply that correspond to the holes and boreholes 35, 36, and 37 in the lid 27 of the body 2, as well as flat gasket 39 fitted with the hole 43 for underpressure/pressure supply to the repair compartment 29, whereas the hole 43 is expanded to side by shape groove 44. The shape groove 44 in the flat gasket 39 allows easily to guide underpressure and pressure to the repair compartment 29 as described below.

(28) The body 2 of the appliance 1 has channel 45 for underpressure supply to the fixing compartment 28 (see FIG. 5) that terminates to the borehole 71 for the connector 46 for connection of the air pump (not shown here). From the borehole 71 and through the body 2, the connection channel 72 is guided to the borehole 47 for the overflow valve 49. The seat 48 of the overflow valve 49 is located in the body 2 in the compartment above the recess 26 of the body base 2. As soon as the air pump (not shown here) is started, the underpressure is generated in the channel 45 and in the borehole 47 for the overflow valve 49.

(29) Assembly of the overflow valve 49 on FIG. 1 comprises of the stem 50 of the overflow valve 49, closing member 51 with the gasket 52 of the overflow valve 49, spring 53 and pushing closure 54 of the overflow valve 49 with the gasket 55 of the closure 54. The pushing closure 54 of the overflow valve 49 is fitted with internal hexagon 56 as well as the closing member 51 in order to disassemble the assembly of the overflow valve 49.

(30) Another important part of the appliance 1, body 2 shown on FIG. 1 is the borehole 61 for the valve 60 for glue supply 58, including visible arresting projection 64. FIG. 4, the borehole 61 for the valve 60 for glue supply 58 is terminated by the glue 58 bin 57. From the bin 57, there is a slanted channel 59 for glue supply 58 through flat gasket 39 to the borehole 37 in the lid 27 of the body 2. The channel 59 terminates in the borehole 61 above the glue 58 level in the bin 57.

(31) The valve 60 of glue supply 58 on FIGS. 1 and 4 has stem 67, which is on one side terminated with a shape corresponding to the borehole 61 end shape and the bin 57 of glue 58, whereas the side wall of the stem 67 is fitted with groove 70 for overflowing of glue 58 from the bin 57 to the channel 59 in the body 2 for glue supply 58 to the repair compartment 29. On the other hand, the stem 67 of the valve 60 of glue supply 58 is fitted with head 62 that works as the arresting stop block 63, engaged in the arresting projection 64 of the body 2. Furthermore, the head 62 is fitted with arresting safety pin 65 that engages to the recess 66 in the body 2 under the arresting projection 64 for the safety pin 65 in case of swivelling the valve 60 of glue supply 58. Tightness of the valve 60 of glue supply 58 is provided by the gasket 69 engaged in the groove 68 on the stem 67.

(32) The appliance 1 for repair of local damage to glass 25 according to embodiment of the invention works in fire work positions of the swivelling adjustable piston 6 being identified by position of the marks 11 on the flange 10 against the indicator 12 on the body 2 of the appliance 1 as well as vertical position, i.e. lifting up or pressing down the piston 6. Individual work positions of the appliance 1 will be described in detail below: Home (zero) work positionfixing of the appliance 1 on glass 25 and pouring of glue 58 to the bin 57 First work positioncreating of underpressure in the repair compartment 29 and above glue 58 Second work positionsqueezing of glue 58 to the repair compartment 29 Third work positionfirst phaseremoval of underpressure in the repair compartment 29 second phasedeveloping of pressure on glue 58 in the repair compartment 29 Fourth work positionflowing of glue 58 to break point 32 Fifth work positiondisassembly of appliance 1 from the glass 25

(33) In the home working position shown on FIG. 5, FIG. 6 and FIG. 7 the air pump (not shown here) is connected to the appliance 1 via the connector 46, the swivelling adjustable piston 6 is set by the handle 9 to home work position indicated by mark 11 and indicator 12 (not visible in this piston 6 position because they are hidden by the handle 9), the valve 60 for glue supply is left arrested in its borehole 61 and the appliance 1 is placed on glass 25 so that the repair compartment 29 is located above break point 32 of glass 25. The overflow valve 49 is closed.

(34) After placing the appliance 1 above break point 32 of glass 25, the air pump is turned on and the developed underpressure is spread by the connector 46 for connection of the air pump to the borehole 71 from where underpressure is distributed around the stem 50 to closed closing member 51 of the overflow valve 49, therefore the overflow valve 49 is air-sealed by pressure of the closing member 51 via the stem 52 to the seat 48 and no underpressure is furthermore distributed. However, underpressure is distributed via the supply channel 45 through hole 41 in the flat gasket 39 and hole 35 in the lid 27 of the body 2 to the fixing compartment 28 in the circular ring between the circumferential elastomer gasket 24 and gasket 31, which makes the appliance 1 fixed on the repaired glass 25.

(35) The valve 60 of glue supply 58 is removed from the borehole 61 and the bin 57 is filled with loose liquid glue 58 in quantity required for repair. It is important that the glue 58 level in the bin 57 is lower than the channel orifice 59. After pouring of the glue 58 to the bin 57, the valve 60 is inserted to the borehole 61, arrested by arresting stop block 63 on the arresting projection 64 of the body.

(36) In alternative procedure for glue 58 filling in the bin 57, the appliance 1 is stood upright on an absorbent pad to dose the glue 58 to the bin 57 yet before fixing on the glass 25 in the home work position. The valve 60 for glue 58 supply is inserted in the borehole 61 and arrested in the arresting pin 64 by the arresting stop block 63. Inserting of the valve 60 to the borehole 61 squeezes excessive glue 58 from the bin 57 and the glue 58 evacuates the appliance 1 through the channel 59 via lid 27 by the borehole 37 for glue supply 58 to the absorbent pad and in this way, correct glue 58 quantity is calibrated yet before affixing the appliance 1 in the home work position.

(37) The air pump, being continuously enabled throughout the term of the glass 25 repair, keeps the underpressure in the fixing compartment 28, borehole 71 for the connector 46 of the air pump, connecting channel 72 and in the borehole 47 for the overflow valve 49.

(38) The first work position is shown on FIG. 8, FIG. 9 and FIG. 10. It is set so that the appliance 1 operator changes the swivelling position of the piston 6 by the swivelling handle 9 in correct direction according to mark 11 and indicator 12, i.e. the mark 11 of the first work position faces to the indicator 12.

(39) When swivelling of the adjustable piston 6 to the first work position, the pushing closure 54 of the overflow valve 49 is pressed by the pressing projection 73 located on the flange 10 of the piston 6, which causes opening of the overflow valve 49. The underpressure is distributed by the hole 43 in the flat gasket 39 and through the borehole 38 via the lid 27 of the body 2 to the repair compartment 29 including damage cracks 32 of the glass 25 and at the same time, air is removed from the bin 57 above the glue 58, including the channel 59 and hole 42 for glue 58 supply without pushing in the valve 60 of the glue 58 supply by underpressure to the borehole 61 because it is secured by the arresting stop block 63 and the arresting pin 64.

(40) In the second working position shown on FIGS. 11, 12, and 13, swivelling of the adjustable piston 6 to the second working position according to the mark 11 against the indicator 12, the overflow valve 49 closes because the pressing projection 73 of the flange 10 changes its position out of the pushing closure 54 and the closing member 51 of the overflow valve 49 again sits in the seat 48 in the body 2. The underpressure present will force to the overflow valve 49 in closing direction and tightness of the overflow valve 49 will further increase because the underpressure forces on the closure of the closing member 51 in addition to the spring 53.

(41) In addition, the valve 60 for the glue 58 supply is manually swivelled in the second work position and the valve 60 engages in the borehole 61 in the body 2, whereas the valve 60 is pulled into also by the underpressure via the channel 59 and it is secured by the arresting safety pin 65 in the recess 66 for said safety pin 65. As soon as the valve 60 drives to the borehole 61, the glue 58due to its incompressibilityis forced to escape from the bin 57 of the glue 58 through the groove 70 along the stem 67 and then via the channel 59 for supply to the repair compartment 29 via hole 42 in the flat gasket 39 and via the borehole 37 in the lid 27 of the body 2 to the repair compartment 29 where the glue 58 is poured on the break point 32 of the glass 25. Due to presence of the underpressure, a small portion of the glue 58 is stuck after pouring to the repair compartment 29 to the borehole 38 for the underpressure/pressure supply to the repair compartment 29 from where the glue 58 is subsequently squeezed to the break point 32 of the glass 25 by the piston pressure 6 in the next work position. It is favourable if the borehole 37 for glue supply and the borehole 38 for underpressure/pressure supply in the lid 27 are arranged in the opposite sections of the repair compartment 29 so that as least as possible glue 58 is stuck to the borehole 38 for the underpressure/pressure supply by the present underpressure.

(42) In the third work position, where the mark 11 of the third work position turns against the indicator 12, the swivelling adjustable piston 6 becomes able to move vertically because the guiding pin 8 stops hindering that movement thanks to the position of the interlock groove 7 on the piston 6. The third work position is divided into the telescopic position identified as the first phase, shown on FIG. 14, FIG. 15 and FIG. 16 and the piston pressing position identified as the second phase, shown on FIG. 17, FIG. 18 and FIG. 19.

(43) In the first phase of the third work position, when pulling the piston 6 out, air is delivered by one-way suction valve 22 to the cylindrical borehole 3 in the body 2 and at the same time, the delivered air fills the shape groove 44 with hole 43 via the channel 5 for pressure supply in the flat grease 39 and through the borehole 38 in the lid 27 of the body 2, air gets up to the repair compartment 29 above flowing glue 58 to the break point 32 of glass 25.

(44) In the second phase of third work position, the piston 6 is compressed and during compression, the pressure acts from downside to the closing member 51 of the overflow valve 49 and to the glue 58 in the repair compartment 29. Because pressure acts in closing direction in this position to the closing member 51 of the overflow valve 49, this phase does not cause any pressure or underpressure drop across the appliance 1 due to leaks of the overflow valve 49 and the constant air pressure presses the glue 58 successively to all break points 32 of the glass 25 without either pulling in or pushing out the glue 58 elsewhere. If needed, the vertical movement of the piston 6 can be repeated several times in order to achieve sufficient pressure in the repair compartment 29.

(45) During the fourth work position shown on FIG. 20, FIG. 21 and FIG. 22, the mark 11 of the fourth work position is set against the indicator 12 by swivelling the piston 6 by 45, which makes the piston 6 secured only against vertical movement by the guiding pin 8 and the operator waits until proper pushing of the glue 58 to all cracks and the extreme areas of the break point 32 of the glass 25. In this way, the pressure acts constantly for time required.

(46) In the fifth working position shown on FIG. 23, FIG. 24 and FIG. 25, the piston 6 returns to the third work position identified by the mark 11 when directing to the indicator 12, i.e. in fact back to the third work position and due to existing pressure, the piston 6 pulls out and the pressure present in the repair compartment 29 developed by previous pushing of the piston 6 is reduced to minimum. The air pump is turned off, the underpressure from the fixing compartment 28 is removed and the appliance 1 is removed from the repaired glass 25. The piston 6 returns into home work position and the appliance 1 is ready for use again.

EXAMPLE 2

(47) FIG. 26 shows a cross-section of the appliance 1 for repairing damage 32 to layered glass 25. Part of the appliance 1 is a steel swivelling adjustable piston 6, which is set into a cylindrical borehole 3 in a plastic body 2 of the appliance 1. The borehole 3 in the site of the seating 17 of the front of the piston 6 at diameter d with a size of 10 mm and in the site of the upper seating 75 has a diameter D with a size of 18 mm. The swivelling adjustable piston 6 controls the function of the appliance 1 so that in each working position it allows the operator of the appliance 1 to carry out only one technological step. This is achieved by machining an interlock groove 7 in the body of the adjustable piston 6, through which runs the guiding pin 8. If the operator of the appliance 1 wants to manipulate with the adjustable piston 6 other than a way permitted by the current technological step, the guiding pin 8 makes such a movement impossible.

(48) Another function of controlling the swivelling piston 6 lies in the pushing control of the valve device, created by an overflow valve 49 which is set into a borehole 47 drilled into the body 2 next to the borehole 3. The borehole 47 has two distinct diameters. The upper half of the borehole 47 has a wider diameter for holding a spring 53. The overflow valve 49 consists of a closing member 51 abut against the sealing rubber washer 52 located in the seat 48, which is fixed to the body 2 in the lower part of the borehole 47. The closing member 51 is connected by steel valve stem 50 with pushing closure 54, which has a larger diameter than the valve stem 50. The seat 48 with sealing washer 52 is created at the end of the borehole 47, while the pushing closure 54 of the overflow valve 49 is stored in a wider upper borehole 47 and the stem 50 passes through the entire borehole 47. Between the pushing closure 54 and transition from the upper wider half of the borehole 47 on the narrower part of the borehole 47 there is a spring 53 stored. The bottom end of the spring 53 is pressed against the body 2 in the borehole 47 while the upper end is pressed against the lower side of the pushing closure 54, so that the force of the spring 53 closes the valve device at the site of the seat 48 and the sealing washer 52.

(49) When working with the appliance 1 the overflow valve 49 is pushed into the borehole 47, or is contrarily released depending on the current technological step in which the appliance 1 is found. This is achieved in that above the upper seating 75 of the adjusting piston 6 there is a machined positioning head 13 with diameter D.sub.H and size 26 mm, which is an integral part of the adjustable piston 6 and is distinct from the adjustable piston 6 by a larger diameter, which is evident when looking at the formed overlap 76. The overlap 76 of the positioning head 13 reaches beyond the pushing closure 54. So that the overlap 76 does not exert continuous pressure on the pushing closure 54, there is an overlap recess 77 on the overlap 76, which has a changing depth with the corresponding position of the swivelling adjustable piston 6 in various technological steps, so that the overflow valve 49 is pushed by the positioning head 13 only in certain positions of the adjustable piston 6, when it is necessary to open the valve device with pressure and create a vacuum at the site above the damage 32 to the glass 25. In other positions of the swivelling adjustable piston 6 the overflow valve 49 is closed by a spring 53.

(50) The interlock groove 7, as shown in FIG. 27 which shows a side view of the adjustable piston 6, and which enables manipulation with the adjustable piston 6 only in one movement because other movements are blocked by the guiding pin 8 screwed into the body 2, which is blocked from movement by the remaining non-machined cladding of the adjustable piston 6.

(51) On the seating 17 of the front of the adjustable piston 6 there is a recess created with rubber sealing ring 18 in the shape of an O-ring. The sealing 18 prevents the passage of air, so the adjustable piston 6 is air-tight in its lowest position. In the event that the adjustable piston 6 is pulled out in a certain technological step, air is drawn in below the adjustable piston 6, since the sealing 18 moves to the wider part of the borehole 3. When the adjustable piston 6 is pressed back to its lowest position, the air is captured in the narrower part of the borehole 3, where increased pressure is created.

(52) So that the operator of the appliance 1 knows exactly at which technological step the appliance 1 is found, and so that the appliance 1 is protected from dirt, the body 2 on the upper side is equipped with a plastic upper cover 78, into which a hole 79 is drilled for the free passage of the positioning head 13. On the cover 78 there are numbers stamped which serve as marks 11 for identifying the technological step of the adjustable piston 6. These marks 11 are indicated by the indicator 12 made up of the pointed end of the aluminium handle 9 of the piston 6, which is screwed to the positioning head 13.

(53) FIG. 26 also shows the borehole 61 for the valve 60 for the supply of glue 58, on the bottom of which is carried out the storage of the dosage of glue 58 for repairing damage 32 to layered glass 25. The borehole 61 has a flat bottom, so that the glue 58 does not get stuck inside. From the borehole 61 in the side wall above its bottom there is a channel 59 drilled for release of the pressurized glue 58 for the damaged 32 glass 25. The channel 59 passes through the body 2 of the appliance 1, including the lid 27 of the body 2. The glue 58 is pressed out of the borehole 61 through the valve 60.

(54) The appliance 1 functions throughout the individual technological steps as follows:

(55) Step 0:

(56) The appliance 1 is placed concentrically on the site of the damaged 32 glass 25. It is connected to an air-pump (not pictured) through a connector 46, which, when turned on, begins to create a vacuum through the distribution channel 34 for creating a vacuum beneath the lid 27 into the fixing compartment 28. The necessary dose of glue 58 is applied into the borehole 61 and the valve 60 is inserted, which is secured in a retracted and rotated position above the dose of glue 58 for repairing damaged 32 glass 25 by the arresting projection 64 created on the body 2.

(57) Step 1:

(58) The appliance 1 is now firmly attached, so the operator may now turn the adjustable piston 6 to technological step 1, resulting in pressure on the overflow valve 49 by the positioning head 13 and in opening the closing member 51 from the sealing 52. The vacuum spreads into the repair compartment 29, including all microscopic cracks in the glass 25 in the damaged area 32 and through the channel 59 and above the surface of the dose of glue 58 stored in the borehole 61, covered by the retracted, rotated, and arrested valve 60.

(59) Step 2:

(60) By rotating the adjustable piston 6, including the positional head 13, the overflow valve 49 closes, and above the site of the damaged 32 glass 25 an isolated vacuum forms. The operator of the appliance 1 rotates, thus releasing the valve 60 from the arrested projection 64, which is pulled into the borehole 61 by the created vacuum and presses on the surface of the dose of glue 58, which moves through the channel 59 into the repair compartment 29 of the damaged 32 glass 25, where it flows for approximately one minute. The valve 60 in its retracted position is rotated to secure it into the safety pin recess 66. The vacuum in the microscopic cracks results in the glue 58 having an increased flow.

(61) Step 3:

(62) In this position of the adjustable piston 6 the interlock groove 7 with guiding pin 8 allows for the movement of the adjustable piston 6 along the vertical axis. The overflow valve 49 is closed; the valve 60 is completely retracted into the borehole 61 and is constantly arrested. By pulling out the adjustable piston 6 to its highest position, the operator removes the vacuum above the damaged 32 glass 25 with flowing glue 58, since the adjustable piston 6 in its highest position is not sealed, because the borehole 3 is wider in its central part than the front seating 17 of the adjustable piston 6 with set sealing 18. After the air is taken in, the operator presses to return the adjustable piston 6 to its lowest position, which not only begins to seal again, but also increases the pressure above the damaged 32 glass 25. The rotationally adjustable piston 6 is rotated under pressure into technological step 4, where it is secured against ejection by the increased pressure. The increased pressure acts on the glue 58 in the damaged area 32 of the glass 25 and the glue 58 thus flows into the most distant cracks where it normally would not flow e.g. under the capillary action of liquids. The increased pressure is left to work for at least 2 minutes.

(63) Step 4:

(64) The adjustable piston 6 is returned to technological step 3, and pulling it out returns the increased vacuum to the value of the local atmospheric pressure, then the air-pump attachment is disconnected and the appliance 1 is removed from the glass.

(65) After completion of repair, the lid 27 of the appliance 1 is wiped to remove stuck drops of glue 58, the glue supply valve 60 is ejected, and the adjustable piston 6 is returned to position 0, at which point the appliance 1 is ready for repeated use.

INDUSTRIAL APPLICABILITY

(66) The appliance according to this invention can be mainly used for repairs of local damage to laminated glasses, particularly windscreens of cars and of other transportation means, where surface is chipped off on a small surface area due to collision with small things such as small stones.

OVERVIEW OF THE POSITIONS USED IN THE DRAWINGS

(67) 1 appliance for repairs of local damage of glass 2 body 3 cylindrical borehole for swivelling adjustable piston 4 seating of cylindrical borehole 5 channel for pressure supply to repair compartment 6 swivelling adjustable piston 7 interlock groove for positioning of piston 8 guiding pin of interlock groove 9 piston handle 10 flange 11 mark 12 indicator 13 positioning head 14 arresting pit 15 arresting pin 16 hole for arresting pin 17 seating of piston front 18 sealing ring for seating of piston front 19 piston sealing ring 20 groove for sealing ring for seating of piston front 21 groove for piston sealing ring 22 one-way suction valve 23 body base 24 circumferential elastomer gasket 25 glass 26 body base recess 27 body lid 28 fixing compartment 29 repair compartment 30 groove for repair compartment gasket 31 repair compartment gasket 32 damage 33 bolt 34 distribution channel for underpressure distribution in fixing compartment 35 borehole for underpressure supply to fixing compartment 36 bolt hole 37 borehole for glue supply 38 borehole for underpressure/pressure supply to repair compartment 39 flat grease 40 bolt hole 41 underpressure supply hole to fixing compartment 42 hole for glue supply 43 underpressure supply hole to repair compartment 44 shape groove 45 channel in body for underpressure supply to fixing compartment 46 air pump connector 47 borehole for overflow valve 48 seat for overflow valve 49 overflow valve 50 overflow valve stem 51 closing member of overflow valve 52 sealing of closing member of overflow valve 53 overflow valve spring 54 pushing closure of overflow valve 55 closure gasket of overflow valve 56 inner hexagon 57 glue bin 58 glue 59 channel in body for glue supply to repair compartment 60 glue supply valve 61 borehole for glue supply valve 62 glue supply valve head 63 arresting stop block of glue supply valve 64 arresting projection of body 65 arresting safety pin of glue supply valve 66 recess for safety pin 67 glue supply valve stem 68 glue supply valve stem gasket groove 69 glue supply valve stem gasket 70 groove for overflowing of glue from bin to channel 71 borehole for air pump connector 72 connecting channel 73 pressing projection of flange of swivelling adjustable piston 74 air supply channel 75 upper seating of the piston 76 overlap 77 overlap recess 78 upper cover 79 hole in the cover d diameter of the piston in lower seating D diameter of the piston in upper seating D.sub.H diameter of the positioning head