Non-slip walking assist device

Details Non-slip walking assist device Non-slip walking assist device

1990-04-02

1991-10-15

Scherbel, David A.

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Crutches

135 81, 135 70, 74 8915, A61H 302

Patent

active

050565460

ABSTRACT:
The present invention is a walking assist device which comprises a shaft having a hand grip at one end and having an end piece at the other. A retractable member is positioned within the end piece and has a point at one end. The retractable member may be positioned in a first position such that the point protrudes from the end piece. The retractable member has a second position in which the point is retracted within the end piece. In an alternate embodiment, a locking mechanism is connected between the shaft and the retractable member to provide an alternately locked position in either the retracted or protruding position of the point.

REFERENCES:
patent: 578583 (1897-03-01), Robinson
patent: 1298721 (1919-04-01), Hughes
patent: 2358853 (1944-09-01), Dunnicliff
patent: 2371246 (1945-03-01), McGrory et al.
patent: 2665701 (1954-01-01), Thackery
patent: 2682275 (1954-06-01), Eyrich
patent: 3448749 (1969-06-01), Stark
patent: 3881504 (1975-05-01), Pfaff
patent: 4364405 (1982-12-01), Norwood et al.
patent: 4434808 (1984-03-01), Burak
patent: 4640301 (1987-02-01), Battiston, Sr. et al.
Illustrated Encyclopedia of Science and Technology-How Does It Work?, vol. 2, pp. 233-234, .COPYRGT.1977.
Strasser, Federics; 10 Ways to Employ Screw Mechanisms; Mechanisms, Linkages and Mechanical Controls, New York, 1965, pp. 182, 183.

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