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US 7,546,662 B2Granted
Caster with weight transferring tab
AssigneeJacob Holtz Company
InventorWilliam F. Frame
Life of this patent
Estimating the term…
Abstract
The invention consists of a caster comprises a yoke having a weight transferring tab and a wheel with groove for receiving the tab. Preferably, the yoke and wheel are made out of plastic, and in some embodiments two different types of plastic. A tab and groove helps transfer the weight of the load on the castor away from the arms of the yoke and onto the wheel. In a preferred embodiment the plastic wheel is molded so as to include a shaft on either side that snap into receiving holes in the yoke, thus avoiding the need for separate axel and rivets.
Claims18
A caster comprising:
- a yoke having a weight transferring tab;
- a wheel with a groove for receiving the weight transferring tab,
- wherein the wheel is rotatablv attached to the yoke, the tab being integrally formed with and disposed substantially on a centerline of the yoke, the groove being disposed substantially on a centerline of the wheel, the tab transfers the weight of a load applied to the yoke to the groove, applying a frictional braking force to the wheel thereby functioning as a brake.
A bed frame comprising:
- support members for supporting a bed;
- casters attached to the support members, each caster comprises a yoke having a weight transferring tab and a wheel having a groove for receiving the weight transferring tab,
- wherein the wheel is rotatably attached to the yoke, the tab being integrally formed with and disposed substantially on a centerline of the yoke, the groove being disposed substantially on a centerline of the wheel, the tab transfers the weight of a load applied to the yoke to the groove, applying a frictional braking force to the wheel thereby functioning as a brake.
A caster comprising:
- a plastic yoke having a weight transferring tab;
- a plastic wheel rotatably attached to the yoke and contacting the tab, the wheel having a groove for receiving the weight transferring tab,
- wherein the tab being integrally formed with and disposed substantially on a centerline of the yoke, the groove being disposed substantially on a centerline of the wheel, the tab transfers the weight of a load applied to the yoke to the groove, applying a frictional braking force to the wheel thereby functioning as a brake.
Dependencies are inferred from the claim text.