GARAGE DOOR NOISE REDUCTION ROLLER ASSEMBLY

Abstract

A roller with a Delrin plastic injection to coat the steel shaft wherein the plastic coated shaft eliminates the metal-to-metal contact that creates the noise. The new and improved Delrin plastic coated shaft will be limn larger than industry standard shafts because 10-11 mm industry standard shafts are too loose in the hinge barrels which allows the rattling. This improved roller shaft is 12 mm at finished thickness to reduce the extra space. Closing the gap between the roller shaft and hinge barrel will eliminate the metal-to-metal contact resulting in a very quiet, rolling garage door. By keeping the finished thickness at 12 mm on the new shaft, the roller will still work on new and old garage door hinges and fixtures. This makes the new and improved roller shaft a truly universal product that will work on 90% of garage doors in service and almost all new models. This is a long over-due improvement to garage door rollers.

Claims

1. A hinge used in conjunction with and affixed to two adjacent garage door panels, the hinge including a roller wheel which is placed into a track of a garage door opening so that a garage door can be rolled up and down with a pair of oppositely disposed roller wheels respectively set within oppositely disposed tracks adjacent opposite ends of the garage door, the roller wheel including a metal collar with a metal roller shaft retained into the roller wheel, the metal roller shaft inserted into aligned openings in metal hinge brackets with a respective pair of metal hinge brackets incorporated into a respective metal hinge plate including openings to receive affixing members by which the each respective metal hinge plate is affixed to a garage door, the hinge comprising: a. the metal roller shaft including a tube retaining member; b. a plastic tube having a cylindrical outer wall and a cylindrical inner chamber surrounded by the cylindrical outer wall and open at a first end and at a second end, the plastic tube fitted over the metal roller shaft through the first opening and the second opening and retained on the metal roller shaft by the tube retaining member; and c. the plastic tube covered metal roller shaft inserted through the respective aligned openings in the hinge brackets so that the plastic tube prevents metal to metal contact between the metal roller shaft and the metal hinge brackets and metal hinge plates.

2. The hinge in accordance with claim 1, further comprising: the plastic tube is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

3. The hinge in accordance with claim 1, further comprising: the tube retaining member is selected from the group consisting of treads, threads and screw threads cut into the metal roller shaft.

4. A hinge comprising: a. a metal roller shaft covered with plastic; and b. the plastic covered metal roller shaft and hinge metal components retaining the plastic covered metal roller shaft are separated by the plastic which prevents metal to metal contact.

5. The hinge in accordance with claim 4, further comprising: the plastic is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

6. The hinge in accordance with claim 5, further comprising: the plastic tube is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

7. The hinge in accordance with claim 4, further comprising: the plastic is molded onto the roller shaft.

8. The hinge in accordance with claim 7, further comprising: the plastic tube is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

9. A metal roller shaft used in conjunction with a metal hinge having metal components, the metal roller shaft further comprising: the metal roller shaft is covered with plastic.

10. The metal roller shaft in accordance with claim 9, further comprising: the plastic is molded onto the metal roller shaft.

11. The metal roller shaft in accordance with claim 9, further comprising: the plastic is a cylindrical tube retained over the metal roller shaft.

12. The metal roller shaft in accordance with claim 10, further comprising: the plastic is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

13. The metal roller shaft in accordance with claim 11, further comprising: the plastic cylindrical tube is made out of material selected from the group consisting of hard thermoplastic, polyurethane and durable synthetic plastics.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Referring particularly to the drawings for the purpose of illustration only and not limitation, there is illustrated:

[0015] FIG. 1 is an exploded view illustrating a roller with a collar retaining a metal shaft extending from the roller and the present invention threads formed into the roller shaft and the plastic tube about to be inserted and threaded onto the shaft of the roller;

[0016] FIG. 2 is a perspective view of the roller shown with the plastic injection molded tube encircling the metal shaft of the roller and having been threaded onto the metal shaft of the roller through the threads on the metal shaft which are part of the present invention;

[0017] FIG. 3 is a side view of the roller shown with the plastic injection molded tube encircling the metal shaft of the roller and having been threaded onto the metal shaft of the roller through the threads on the metal shaft which are part of the present invention;

[0018] FIG. 4 is an exploded view of the shaft extending from the roller with a locking member within the shaft and a plastic tube to be inserted onto the shaft of the roller;

[0019] FIG. 5 is a top view of the completed embodiment of the plastic tube affixed onto the roller shaft; and

[0020] FIG. 6 is a perspective view of the new and improved rolled plastic lined roller shaft affixed through openings in the hinge plate which affixes the assembly to the back of a garage door which enables the track roller to roll up and down the track and eliminates the noise between the shaft of the roller and the metal portions of the hinge plate due to the fact that the shaft of the roller is now covered with plastic which is affixed onto the shaft of the roller so that the plastic shaft reduces noise and assure that the plastic shaft will not roll or fall off the shaft of the roller,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Although specific embodiments of the present invention will now be described with reference to the drawings, it should be understood that such embodiments are by way of example only and merely illustrative of but a small number of the many possible specific embodiments which can represent applications of the principles of the present invention. Various changes and modifications obvious to one skilled in the art to which the present invention pertains are deemed to be within the spirit, scope and contemplation of the present invention as further defined in the appended claims.

[0022] The present invention addresses the following problem with noise created when a garage door is moving up or down. The problem is not the roller wheel itself because that is not where the noise comes from. The noise comes from the steel shaft of the roller that slides into the hinge and fixtures (top and bottom door brackets) of the garage door. The steel garage door hinges and fixtures have a tube or round bracket that retains the roller's shaft. This allows the roller to be retained and allows the shaft to move freely side to side. As the garage door rolls up and down, the rollers move freely and the space in between the tube and roller shaft causes a rattle because of the metal-to-metal contact. This is why the door sounds shaky and noisy when it is in motion. Greasing or lubricating the rollers will not fix the problem of the rattling sound. Even installing the quietest belt drive garage door opener with the quietest hinges and best precision 13-ball rollers will not guarantee that the door will be rattle-free in operation.

[0023] The present invention is a roller with a Delrin plastic injection to coat the steel shaft wherein the plastic coated shaft eliminates the metal-to-metal contact that creates the noise. The new and improved Delrin plastic coated shaft will be 1 mm larger than industry standard shafts because 10-11 mm industry standard shafts are too loose in the hinge barrels which allows the rattling. This improved roller shaft is 12 mm at finished thickness to reduce the extra space. Closing the gap between the roller shaft and hinge barrel will eliminate the metal-to-metal contact resulting in a very quiet, rolling garage door. By keeping the finished thickness at 12 mm on the new shaft, the roller will still work on new and old garage door hinges and fixtures. This makes the new and improved roller shaft a truly universal product that will work on 90% of garage doors

[0024] in service and almost all new models. This is a long over-due improvement to garage door rollers.

[0025] Referring to FIG. 1, there is illustrated a perspective view which includes a conventional roller wheel 10 which is placed into a track of a garage door so that a garage door can be rolled up and down with a pair of oppositely disposed rollers respectively set within oppositely disposed tracks adjacent opposite ends of the garage door. The roller wheel 10 includes a collar 20 with the roller shaft 30 retained into the roller wheel 10 by the collar 20. The innovation of the present invention is to retain a plastic tube or tire 40 made out of material as described above selected from the group consisting of hard thermoplastic (such as Delrin), polyurethane and durable synthetic plastics. The plastic tube or tire 40 has a cylindrical outer wall 42 and a cylindrical inner chamber 44 surrounded by the cylindrical outer wall 42 and open at both a first end 46 and a second end 48. A tube retaining member 50 is formed into the outer cylindrical wall 32 of the roller shaft 30. As illustrated in FIG. 1, treads, threads or screw threads 60 are cut or otherwise formed into the outer wall 32 of roller shaft 30. The plastic tube 40 is injection molded on the roller shaft 30 and press molded against the threads 60 and is thereby securely retained on the roller shaft 30.

[0026] Referring to FIG. 2, there is illustrated a perspective view of the completed present invention roller wheel assembly 100 which includes the roller wheel 10, the injection molded plastic tube 40 encircling the metal shaft 30 retained at a first end 34 through the collar 20 and into the roller wheel 10, the plastic tube 40 having been injection molded onto or press fit onto the metal shaft 30. A detent 37 is at the second end 36 of the metal shaft 30 to be crimped or have a retention member thereon to prevent the metal shaft from, sliding out of the brackets of the hinge member (See FIG. 6).

[0027] Referring to FIG. 3, there is illustrated a perspective view of the completed present invention roller wheel assembly 100 which includes the roller wheel 10, the injection molded plastic tube 40 encircling the metal shaft 30 retained at a first end 34 through the collar 20 and into the roller wheel 10, the plastic tube 40 having been molded onto or press fit onto the metal shaft 30. A detent 37 is at the second end 36 of the metal shaft 30 to be crimped or have a retention member thereon to prevent the metal shaft from, sliding out of the brackets of the hinge member (See FIG. 6).

[0028] Referring to FIG. 4, there is illustrated a perspective view of a alternative embodiment of the present invention which includes a conventional roller wheel 10A which is placed into a track of a garage door so that a garage door can be rolled up and down with a pair of oppositely disposed rollers respectively set within oppositely disposed tracks adjacent opposite ends of the garage door. The roller wheel 10A includes a collar 20A with the roller shaft 30A retained into the roller wheel 10A by the collar 20A. The innovation of the present invention is to retain a plastic tube or tire 40A made out of material as described above selected from the group consisting of hard thermoplastic (such as Delrin), polyurethane and durable synthetic plastics. The plastic tube or tire 40A has a cylindrical outer wall 42 and a cylindrical inner chamber 44A surrounded by the cylindrical outer wall 42A and open at both a first end 46A and a second end 48A. A tube retaining member 50A is formed into the outer cylindrical wall 32A of the roller shaft 30A. As illustrated in FIG. 4, detents or at least one locking member 60A are cut or otherwise formed into the outer wall 32A of roller shaft 30A. The plastic tube 40A is injection molded onto the roller shaft 30A and retained thereon by the at least one locking member 60A so that the plastic tube 40A is securely retained on the roller shaft 30A.

[0029] Referring to FIG. 5, there is illustrated a perspective view of the completed alternative embodiment of the present invention roller wheel assembly 200 which includes the roller wheel 10A, the plastic tube 40A encircling the metal shaft 30A retained at a first end 34A through the collar 20A and into the roller wheel 10A, the plastic tube 40A having been retained onto the metal shaft 30A. A detent 37A is at the second end 36A of the metal shaft 30A to be crimped or have a retention member thereon to prevent the metal shaft from, sliding out of the brackets of the hinge member (See FIG. 6).

[0030] Referring to FIG. 6, there is illustrated a perspective view of the new and improved plastic lined roller shaft 30 affixed through openings 310 and 320 in hinge bracket 330 affixed to first hinge plate 340 and openings 350 and 360 in hinge bracket 370 affixed to hinge plate 380. First hinge plate 340 has a multiplicity of openings 340A, 340B, 340C, 340D, and 340E through which fastening members affix first hinge plate 340 to the back of a garage door panel. Second hinge plate 380 has a multiplicity of openings 380A, 340B, 340C, 380D, and 380E through which fastening members affix second hinge plate 380 to the back of a garage door panel. The hinge plates 340 and 360 are respectively affixed at the location of two adjacent garage door panels which enables the roller well 10 to roll up and down a track (with an opposite roller wheel inside an opposite track) to enable the garage door to move up and down.

[0031] The plastic tube 40 covering the roller shaft 30 eliminates metal to metal contact between the roller shaft 30 and the metal brackets 330 and 360 and metal hinge plates 340 and 380 to thereby significantly reduce the noise between the roller shaft 30 and the metal portions of the hinge brackets and hinge plates of the hinge as the garage moves is moved upward and downwards.

[0032] The roller shaft can be covered with a plastic tube such as 40 or 40A and retained on the roller shaft 30 by retaining members such as treads, threads, screw threads, detents or other locking members. The roller shaft can also be coated with plastic and also the plastic can be heat formed or molded onto the roller shaft 30. The plastic covering also creates a tight press fit with the openings 330, 340, 360 ad 370 with the hinge brackets 340 and 380 to further reduce noise and assure that the plastic shaft will not roll or fall out of the hinge 500. The plastic coating on the roller shaft causing the .plastic to abut against the openings 310, 420, 330 and 340 and therefore the rattling noise of metal-to-metal contact known in the prior art is eliminated so that there is a much quieter action of the garage door roller as it rolls up and down the garage door track.

[0033] Of course the present invention is not intended to be restricted to any particular form or arrangement, or any specific embodiment, or any specific use, disclosed herein, since the same may be modified in various particulars or relations without departing from the spirit or scope of the claimed invention hereinabove shown and described of which the apparatus or method shown is intended only for illustration and disclosure of an operative embodiment and not to show all of the various forms or modifications in which this invention might be embodied or operated.