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US 3,971,601 AGranted
Sanitary anti-friction trolley wheel
AssigneeC. L. Frost & Son, Inc.
InventorFrederick R. Sytsma
Life of this patent
Estimating the term…
Abstract
A trolley wheel is formed of plastic-like material and includes a bearing assembly, inner and outer metallic races and bearing means positioned therebetween. The entire assembly is formed of non-corrosive material. The bearing means and races therefore are accessible from the sides of the wheel for ease of cleaning during operation.
Claims18
A trolley wheel assembly comprising, in combination:
- an anti-friction plastic wheel having a central opening;
- an annular outer metallic bearing race positioned in said opening;
- an axial means extending through said opening;
- an annular inner metallic bearing race positioned about said axial means and spaced from said outer race;
- and a plurality of anti-friction means disposed in said space defined between said races;
- said axial means including a shaft having an enlarged head portion, said head portion having a formed surface comprising at least a part of said inner race;
- said inner race further including a second member, said second member being cylindrical and adapted to fit over said shaft and into abutment with said enlarged head portion of said shaft, the outer surface of said second member comprising at least a portion of said inner race.
4 more elements
A trolley bracket assembly comprising, in combination:
- a trolley bracket having a trolley wheel supporting end, said end having an opening for receiving a trolley wheel;
- a trolley wheel comprising an anti-friction plastic wheel with a central opening;
- a pair of metallic annular outer bearing races in said central opening, said races being spaced axially apart;
- a set of roller balls for each of said races;
- an inner race assembly including a mounting shaft having an enlarged head on one end, the opposite end of said shaft adapted for insertion into said bracket opening for securing said trolley wheel to said bracket, said enlarged head including an inner race for one of said set of balls;
- and a cylindrical member adapted to fit over said shaft into abutment with said enlarged head, said cylindrical member including an inner race for the other of said set of balls.
3 more elements
Dependencies are inferred from the claim text.