Shock-absorbing cane

Details Shock-absorbing cane Shock-absorbing cane

2006-11-13

2008-11-04

Dunn, David R (Department: 3636)

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

C135S076000

Reexamination Certificate

active

07445016

ABSTRACT:
A shock absorbing cane, including a shaft and a handle, the shaft having a self propelling and repositioning forward motion when compressed handle is lifted by user. The shaft extends from the handle and the handle is shock-absorbing for absorbing impact when the shaft strikes against an unyielding surface. The handle includes a fixed portion, a movable portion, and a dampening assembly. The fixed portion is affixed to the shaft and the movable portion is movably mounted to the fixed portion. The dampening assembly includes a tension spring disposed in the fixed portion of the handle, with one leg thereof extending into the shaft to preload the tension spring by biasing against the shaft, and with the other leg thereof extending via a rod into and affixed to the movable portion of the handle, thereby allowing the movable portion of the handle to resiliently move relative to the shaft and absorb impact when the shaft strikes against the unyielding surface.

REFERENCES:
patent: 2802479 (1957-08-01), Hickman
patent: 4061347 (1977-12-01), Stern et al.
patent: 4958651 (1990-09-01), Najm
patent: 5699819 (1997-12-01), Simmons
patent: 5720474 (1998-02-01), Sugiyama
patent: 2004/0250845 (2004-12-01), Rudin et al.

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