Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Tips
Patent
1997-05-05
1999-06-15
Mah, Chuck Y.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Tips
A45B 102, A61H 304
Patent
active
059112352
ABSTRACT:
A glide, preferably self retaining, for the lower end of each rear leg of a walker. The device substantially reduces forward drag or resistance to walker sliding movement over a support substrate such as carpet, hard floors, concrete, ground and like, while simultaneously increasing resistance to side ways or lateral slippage. The device includes a stationary or fixed member which engages with and receives support from each walker leg lower end and includes a support shaft orientated at an acute angle of preferably about fifteen degrees (15.degree.) to the central axis of the leg. A ground engaging member is held on the support shaft for rotation only and has a lower exterior contoured ground engaging surface which, in combination with the acute angle, makes contact with the support substrate laterally from the central axis of the leg.
REFERENCES:
patent: 941664 (1909-11-01), Thompson
patent: 985492 (1911-02-01), Arbeiter
patent: 1421647 (1922-07-01), Wolfs
patent: 3165314 (1965-01-01), Clearman et al.
patent: 3675269 (1972-07-01), Closa
patent: 3928888 (1975-12-01), Lapham
patent: 4509227 (1985-04-01), Keane
patent: 5075924 (1991-12-01), Estkowski et al.
patent: 5222786 (1993-06-01), Sovis et al.
patent: 5573213 (1996-11-01), Henderson et al.
"Mushroom Glide" brochure of D.M.D. Co./Cares R US Ltd.
Henderson Richard E.
O'Brien Kathleen
Gurley Donald M.
Mah Chuck Y.
Prescott Charles J.
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