Garage door roller assembly
AssigneeCarpin Manufacturing, Inc.
InventorRalph Carpinella
Life of this patent
Estimating the term…
Abstract
A garage door roller assembly includes a one-piece, unitary shaft and a one-piece, unitary roller, each composed of a polymeric material and a washer and a pin, each composed of case-hardened steel. The roller includes a sleeve portion having an axial bore, a wheel portion, and a web extending radially from the wheel portion to the sleeve portion. The shaft includes an axial bore, a mounting portion, and a race portion. The race portion is rotatably mounted within the bore of the sleeve portion of the roller. The pin includes a head and a stem which extends axially from the head through the opening of the washer into the bore of the shaft. A knurled segment of the stem frictionally engages the bore of the shaft.
Claims19
A roller assembly for an entry way including an upwardly-acting overhead door having oppositely disposed side edges, a first L-shaped track positioned on a first side of the entry way, and a second L-shaped track positioned on a second side of the entry way, the roller assembly comprising:
- a roller composed of a polymeric material, the roller having a sleeve portion defining an axial bore, a wheel portion engageable with one of the tracks, and a web extending radially from the wheel portion to the sleeve portion;
- a shaft composed of a polymeric material, the shaft defining an axial bore and having a mounting portion and a race portion, the race portion being rotatably disposed within the bore of the sleeve portion of the roller, the mounting portion being mountable to the door wherein the race portion is positioned at a distance from one of the side edges;
- a washer defining an opening and having oppositely disposed proximal and distal surfaces, the opening being coaxial with the bore of the sleeve portion of the roller, the proximal surface being slidably engaged with the web of the roller;
- and
- a pin having a head and a stem extending axially from the head to a proximal end, the stem extending through the opening of the washer and being frictionally engaged within the bore of the shaft, the head engaging the distal surface of the washer.
A garage door roller assembly comprising:
- a one-piece, unitary roller, composed of a polymeric material, having a sleeve portion defining an axial bore, a wheel portion, and a web extending radially from the wheel portion to the sleeve portion;
- a one-piece, unitary shaft, composed of a polymeric material, defining an axial bore and having a mounting portion and a race portion, the race portion being rotatably disposed within the bore of the sleeve portion of the roller;
- a washer, composed of case-hardened steel, defining an opening coaxial with the bore of the sleeve portion of the roller;
- and
- a pin, composed of case-hardened steel, having a head and a stem extending axially from the head through the opening of the washer and into the bore of the shaft, the stem having a knurled segment frictionally engaged within the bore of the shaft.
An upwardly-acting overhead door for selectively opening and closing an entry way having oppositely disposed sides, the door comprising:
- a plurality of door panels extending from one side edge to an opposite side edge, the side edges being positioned proximate the sides of the entry way;
- a plurality of hinges, each of the hinges comprising a pair of pivotally connected hinge halves associated with a pair of adjacent door panels and a hinge tube, each of the hinge halves being mounted to a respective one of the door panels adjacent a side edge of the door panel;
- a pair of L-shaped tracks, one of the tracks being mounted along one side of the entry way and the other track being mounted along the opposite side of the entry way;
- and
- a plurality of roller assemblies, each of the roller assemblies comprising a shaft, a roller, a washer, and a pin, the roller having sleeve portion defining an axial bore, a wheel portion rollingly engaged with the track, and a web extending radially from the wheel portion to the sleeve portion, the shaft defining an axial bore and having a mounting portion and a race portion, at least a portion of the mounting portion being disposed within the hinge tube, the race portion being disposed within the bore of the sleeve portion of the roller and positioned at a distance from the side edge of the door, the pin having a head and a stem extending axially from the head through the opening of the washer into the bore of the shaft, the stem having a knurled segment frictionally engaged with the bore of the shaft.
Dependencies are inferred from the claim text.