DOOR HINGE ASSEMBLY

Abstract

A door hinge assembly is provided. The door hinge assembly includes a first hinge plate, a second hinge plate, one or more bushings, a hinge pin and a hollow sleeve. The first and second hinge plate includes a one or more first and second knuckles aligned axially. At least one of the one or more bushings is positioned in between the first and second knuckle to prevent direct contact of first and second knuckle. The hinge pin is disposed through the first and second knuckles and one or more bushings. The hollow sleeve acts a covering to the hinge pin. The hollow sleeve further prevents contact of the sides of the first knuckle, bushings and second knuckle with the hinge pin. This prevents a direct metal on metal contact and further prevents squeak or other noises occurred during the opening and closing of the door.

Claims

1. A door hinge assembly comprising: a first hinge plate having one or more first knuckles with an axial continuous passage, the first knuckles having a first knuckles horizontal plane across both of a bottom and a top surface of each knuckle that is perpendicular to a first vertical axis of the first hinge plate; a second hinge plate having one or more second knuckles with an axial continuous passage, the second knuckles having a second knuckles horizontal plane across both of a bottom and a top surface of each knuckle that is perpendicular to a second vertical axis of the second hinge plate, the one or more second knuckles extending between and axially aligned with the one or more first knuckles; a lubricant-free hinge pin assembly comprising a hinge pin and at least one lubricant-free, hollow sleeve, having a hollow interior therein, the hinge pin inserted in the hollow interior of the at least one hollow sleeve to prevent metal-on-metal contact between the hinge pin and the hinge knuckles, the hinge pin passes through the one or more first knuckles and the one or more second knuckles to connect first hinge plate and the second hinge plate and the at least one hollow sleeve to protect direct contact of the hinge pin with the sides of the one or more first hinge plate and the one or more second hinge plate; wherein the hinge pin assembly is configured to eliminate any need for lubricants and to prevent metal-on-metal contact and grating.

2. The door hinge assembly according to claim 1, further comprising: one or more non-metal, lubricant-free bushings to prevent direct contact of the one or more first knuckles with the one or more second knuckles, at least one of the one or more bushings positioned between the one or more first knuckles and the one or more second knuckles, wherein each bushing is uniform in height that is parallel to the axis of the respective hinge plate, for placement between the first and second knuckles, wherein each bushing has a bushing horizontal axis across both of a bottom and a top surface that is perpendicular to both the first vertical axis of the first hinge plate and the second vertical axis of the second hinge plate; wherein the hinge pin passes through the one or more first knuckles, the one or more bushings, and the one or more second knuckles.

3. The door hinge assembly according to claim 1, wherein the at least one lubricant-free, hollow sleeve comprises multiple hollow sleeves, each sleeve having a length of the knuckle into which it is placed.

4. The door hinge assembly according to claim 2, wherein the one or more non-metal, lubricant-free bushings and the at least one hollow sleeve are integrally formed such that one bushing is integrally formed with one hollow sleeve.

5. The door hinge assembly according to claim 2, wherein the one or more bushings further comprise a PTFE coating.

6. The door hinge assembly according to claim 1, wherein the first hinge plate and the second hinge plate is formed from a low carbon steel metal.

7. The door hinge assembly according to claim 1, wherein the hinge pin is formed from low carbon steel.

8. The door hinge assembly according to claim 1, further comprising attachment means to attach the first hinge plate to a door and the second hinge plate to a corresponding door frame.

9. The door hinge assembly according to claim 1, wherein the first hinge plate comprises one or more first recesses and the second hinge plate comprises one or more second recesses to allow the attachment means to connect the first hinge plate to door and the second hinge plate to a corresponding door frame.

10. A door hinge assembly comprising: a first hinge plate having one or more first knuckles with an axial continuous passage, the first knuckles having a first knuckles horizontal plane across both of a bottom and a top surface of each knuckle that is perpendicular to a first vertical axis of the first hinge plate, and the first hinge plate further having one or more first recesses; a second hinge plate having one or more second knuckles with an axial continuous passage, the second knuckles having a second knuckles horizontal place across both of a bottom and a top surface of each knuckle that is perpendicular to a second vertical axis of the second hinge plate, the one or more second knuckles extending between and axially aligned with the one or more first knuckles, the second hinge plate further having one or more second recesses; a lubricant-free hinge pin assembly comprising a hinge pin and at least one lubricant-free, hollow sleeve, having a hollow interior therein, the hinge pin inserted in the hollow interior of the at least one hollow sleeve to prevent metal-on-metal contact between the hinge pin and the hinge knuckles, the hinge pin passes through the one or more first knuckles and the one or more second knuckles to connect first hinge plate and the second hinge plate and the hollow sleeve to protect direct contact of the hinge pin with the sides of the one or more first hinge plate and the one or more second hinge plate; and one or more attachment means to attach first hinge plate to a door through one or more first recesses and second hinge plate to a door's frame through one or more second recesses; wherein the hinge pin assembly is configured to eliminate any need for lubricants and to prevent metal-on-metal contact and grating.

11. The door hinge assembly according to claim 9, further comprising: one or more non-metal, lubricant-free bushings to prevent direct contact of the one or more first knuckles with the one or more second knuckles, at least one of the one or more bushings positioned between the one or more first knuckles and the one or more second knuckles, wherein each bushing is uniform in height that is parallel to the axis of the respective hinge plate, for placement between the first and second knuckles, wherein each bushing has a bushing horizontal axis across both of a bottom and a top surface that is perpendicular to both the first vertical axis of the first hinge plate and the second vertical axis of the second hinge plate; wherein the hinge pin passes through the one or more first knuckles, the one or more bushings, and the one or more second knuckles.

12. The door hinge assembly according to claim 9, wherein the at least one lubricant-free, hollow sleeve comprises multiple hollow sleeves, each sleeve having a length of the knuckle into which it is placed.

13. The door hinge assembly according to claim 10, wherein one or more bushings comprise a material coated with PTFE.

14. The door hinge assembly according to claim 10, wherein the one or more non-metal, lubricant-free bushings and the at least one hollow sleeve are integrally formed such that one bushing is integrally formed with one hollow sleeve.

15. The door hinge assembly according to claim 9, wherein the first hinge plate and the second hinge plate comprise low carbon steel metal.

16. The door hinge assembly according to claim 9, wherein the hinge pin comprises low carbon steel.

17. The door hinge assembly according to claim 10, wherein one or more bushings comprise a material made of PTFE.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

[0036] FIG. 1 illustrates an exploded view of a door hinge assembly, in accordance with a preferred embodiment of the technology described herein;

[0037] FIG. 2 illustrates a perspective view of the door hinge assembly, in accordance with a preferred embodiment of the technology described herein; and

[0038] FIG. 3 illustrates a cross-sectional view of a hinge pin assembly, in accordance with a preferred embodiment of the technology described herein.

DETAILED DESCRIPTION OF THE INVENTION

[0039] While this invention is illustrated and described in a preferred embodiment, the door hinge assembly may be produced in many different configurations, forms and materials. There is depicted in the drawings, and will herein be described in detail, as a preferred embodiment of the invention, with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and the associated functional specifications for its construction and is not intended to limit the invention to the embodiment illustrated. Those skilled in the art will envision many other possible variations within the scope of the technology described herein.

[0040] Reference will now be made in detail to several embodiments of the invention which are illustrated in the accompanying drawings. Wherever feasible and convenient, the same reference numerals are used in the figures and the description to refer to the same or like parts. The drawings are in a simplified form and not to precise scale. For purposes of convenience and clarity only, directional terms, such as top, bottom, left, right, up, down, over, above, below, beneath, rear, and front may be used with respect to the accompanying drawings. These and similar directional terms should not be strictly construed to limit the scope of the invention. In addition, words such as attached, affixed, coupled, connected and similar terms with their inflectional morphemes are used interchangeably, unless the difference is noted or made otherwise clear from the context. These words and expressions do not necessarily signify direct connections, but include connections through mediate components and devices.

[0041] FIG. 1 illustrates an exploded view of a door hinge assembly 100 in accordance with a preferred embodiment of the technology. The door hinge assembly 100 includes a first hinge plate 102, second hinge plate 104, one or more bushings 106, a hinge pin assembly including a hinge pin 108 and a hollow sleeve 110 with hollow interior 111. The first hinge plate 102 includes one or more first knuckles 112 such as 112a, 112b and 112c with an axial continuous passage 109.

[0042] The second hinge plate 104 includes one or more second knuckles 114 such as 114a and 114b with an axial continuous passage 109. The one or more second knuckles 114 extending between and further axially aligned with the one or more first knuckles 112. The one or more bushings 106 such as 106a, 106b, 106c and 106d prevents direct contact of the one or more first knuckles 112 with the one or more second knuckles 114. At least one of the one or more bushings 106 to be positioned between the one or more first knuckles 112 and the one or more second knuckles 114.

[0043] A hinge pin 108 is disposed in the hollow sleeve 110 and thus the hollow sleeve 110 incorporated with the hinge pin 108 passes through the one or more first hinge plate 102, the one or more second hinge plate 104 and the one or more bushings 106. The hollow sleeve 110 protects direct contact of the hinge pin 108 with the sides of the one or more first hinge plate 102, the one or more second hinge plate 104 and the one or more bushings 106.

[0044] FIG. 2 illustrates a perspective view of the door hinge assembly 100. The first hinge plate 102 further includes one or more first recesses 202 such as 202a, 202b and 202c. The second hinge plate 104 further includes one or more second recesses 204 such as 204a, 204b and 204c. In a preferred embodiment of the present invention, the door hinge assembly 100 one or more attachment means (not shown in Figures) to attach first hinge plate 102 to the door through one or more recesses 202 and the second hinge plate 104 to the door's frame through one or more recesses 204.

[0045] FIG. 2 also indicates the axial alignment of the hinge pin (not visible) disposed in the hollow sleeve 110 with the one or more first knuckles 112, the one or more bushings 106 and the one or more second knuckles 114. A double sided arrow 206 indicating the movement of the first hinge plate 102 attached to the door. The hinge pin 108 allows the first hinge plate 102 to open and close the door.

[0046] FIG. 3 illustrates a cross-sectional view of the hollow sleeve 110 and the hinge pin 108, in accordance with a preferred embodiment of the technology. The cross-sectional view indicates the arrangement of the one or more bushings 106 in between the one or more first knuckle 112 and the one or more second knuckle 114.

[0047] In a preferred embodiment of the present invention, the one or more bushings 106 and the one or more hollow sleeve 110 are made up of PTFE. The first hinge plate 102 and the second hinge plate 104 are made up of with low carbon steel.

[0048] In a preferred embodiment of the present invention, the bushings 106 have a height of 0.125 inch. The hinge pin 108 has a thickness of 0.14 inch. The length of the hinge plates (102, 104) is 3.500 inch and the width is 1.700 inch from the center of the continuous passage to the outside edge of the left or right hinge plate. The width of top and bottom knuckles of the first hinge plate 102 is 0.5 inch and the width of middle knuckle of first hinge plate 102 is 0.625 inch in width. The top and bottom knuckle of the second hinge plate 104 is 0.6875 inch in width. The length of the hinge pin 108 is 3.625 inch. The hollow sleeve 110 dimensions are 3.5 inches in length, with an interior diameter of 0.14 inches and an exterior diameter of 0.234 inches.

[0049] The door hinge assembly 100 offers various advantages. The door hinge assembly 100 prevents metal on metal contact, thus eliminating the squeak produced during the opening and closing of the door. The door hinge assembly 100 eliminates the need for lubricants and other temporary solutions to reduce squeaking or metal-on-metal grating by incorporating PTFE components to eliminate metal-on-metal contact.

REFERENCE NUMBER TABLE

[0050]

TABLE-US-00001 Ref. # Description 100 Door Hinge Assembly 102 First Hinge Plate 104 Second Hinge Plate 106 Bushing 108 Hinge Pin 110 Hollow Sleeve 112 First Knuckles 114 Second Knuckles 202 First Recesses 204 Second Recesses

[0051] The foregoing discussion discloses and describes merely exemplary embodiments of the technology described herein. One skilled in the art will readily recognize from such discussion and from the accompanying drawings that various changes, modifications and variations can be made therein without departing from the spirit and scope of the invention. For example, variances in the dimensions, finishes, types of metal, non-stick materials other than PTFE, applications other than door hinges, etc.