Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Crutches
Patent
1976-09-02
1978-04-25
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Crutches
135 75, 248409, 248413, 403108, 403109, 403324, 403328, A45B 904
Patent
active
040857638
ABSTRACT:
A quad cane includes a stabilizing device for improving the strength and rigidity of the cane. The stabilizing device comprises a collar having an interior opening therein and a wing screw which is threadably received in a hole which communicates the interior opening of the collar to the exterior thereof. The collar is drive fit over the exterior hollow sleeve of the upper portion of the quad cane in such a way that the threaded hole is located opposite an aperture in the sleeve. By rotating the threaded wing screw downwardly it is possible to impinge against the inner tubular member and immobilize the outer hollow sleeve relative to the inner tubular member of the cane. The stabilizing device is typically used in conjunction with a spring-loaded push button which serves to help adjust the height of the quad cane.
REFERENCES:
patent: 777113 (1904-12-01), Lester
patent: 1322084 (1919-11-01), Bemis
patent: 1870921 (1932-08-01), Murka
patent: 2630128 (1953-03-01), Slater
patent: 2759525 (1956-08-01), Ries
patent: 2842387 (1958-07-01), Della-Porta
patent: 3289685 (1966-12-01), Parker
patent: 3553746 (1971-01-01), Seiger
patent: 3554585 (1971-01-01), Sorenson
patent: 3752476 (1973-08-01), Mahoney
patent: 3768495 (1973-10-01), Smith
Berman Conrad L.
Schroeder Werner H.
Temco Products, Inc.
Woodbridge Richard C.
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