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US 4,098,283 AGranted
Specialized crutch tips
AssigneeThe Raymond Lee Organization, Inc.
InventorRobert C. Tritle, Jr.
Life of this patent
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Abstract
A disk having a convex lower surface bounded by a peripheral ridge may be attached to the bottom of a crutch tip to engage sand, a plurality of apertures around the disk permits the disk to engage snow, and a plurality of thumb tacks embedded in the disk and extending downward from the disk to form a plurality of pointed projections will help the disk engage ice.
Claims6
A specialized crutch tip, comprising:
- a crutch tip,
- a disk attached to a bottom surface of the crutch tip,
- the disk forming a convex lower surface, &
- the convex lower surface extending to form a flat peripheral ridge.
1 more element
Dependencies are inferred from the claim text.