Crutches, walking sticks, and the like

Details Crutches, walking sticks, and the like Crutches, walking sticks, and the like

1988-12-05

1990-08-14

Scherbel, David A.

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Tips

135 77, 135 86, A61H 302, A45B 100

Patent

active

049478826

ABSTRACT:
A stick in accordance with the invention essentially comprises a riser (3), a foot (1) defining a supporting polygon, a ball-and-socket joint connecting the riser (3) to the foot (1), and resilient means (12) for keeping the riser in a determined position relative to the foot, such that when the foot stands on substantially horizontal ground and when the resilient means are in the holding position, the riser remains in a substantially vertical position, with the supporting polygon being defined by five end fittings (2) positioned substantially at the vertices of a pentagon.

REFERENCES:
patent: 862455 (1907-08-01), Dunkel
patent: 1348531 (1920-08-01), Amadio
patent: 2606568 (1952-08-01), Walcot et al.
patent: 2753586 (1956-07-01), Metz
patent: 2910995 (1959-11-01), Jacuzzi
patent: 3289685 (1966-12-01), Parker
patent: 4135536 (1979-01-01), Willis
patent: 4440186 (1984-04-01), Lottner
patent: 4510957 (1985-04-01), Frank

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