Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Combined and convertible
Patent
1993-12-09
1994-08-23
Friedman, Carl D.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Combined and convertible
135 68, A45B 300
Patent
active
053398491
ABSTRACT:
The handles of a pair of crutches have male and female coupling elements which enable them to be removably and totally fixed to one another. Crutches fixed in this manner can then be placed in a stable manner against any support at an elevation above their center of gravity.
REFERENCES:
patent: 1231030 (1917-06-01), Kelley
patent: 1870924 (1932-08-01), Platzer
patent: 2672311 (1954-03-01), Schiele
patent: 3606898 (1971-09-01), Harocopo
patent: 4506854 (1985-03-01), Kim
patent: 4834235 (1989-05-01), Solheim et al.
patent: 4921192 (1990-05-01), Jones
Friedman Carl D.
Mai Lan C.
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