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US 8,407,856 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.
Claims15
A caster comprising:
- a yoke having a weight transferring tab extending downwardly therefrom;
- a wheel being rotatably supported by the yoke, the wheel having a groove for receiving the weight transferring tab, wherein the tab transfers the weight of a load applied to the yoke to the groove, applying a frictional braking force to the wheel.
A caster comprising:
- a yoke made of a plastic material, the yoke being capable of supporting a body weight applied to the caster via a stem by a human, yoke having a weight transferring tab extending downwardly therefrom;
- the stem being attached to the yoke by a snap-fit connection, the stem being made of metal or plastic material;
- a wheel being rotatably attached to the yoke, the wheel having a groove for receiving the weight transferring tab, wherein the tab transfers the weight of a load applied to the yoke to the groove.
Dependencies are inferred from the claim text.