Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Walker type
Patent
1987-02-24
1989-01-31
Hafer, Robert A.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Walker type
297 6, A61H 300
Patent
active
048009105
ABSTRACT:
A walker having a unique leg support system in which the walker's two stationary front legs are interchangeable at the user's discretion with two wheeled front legs, both types of legs being height adjustable relative to the walker's framework. The wheeled front legs are connectable to the walker's frame so the wheels can be oriented on either the outboard or the inboard of the walker's front leg. Each wheeled front leg includes a wheel axle and a pivot axle connected thereto, the pivot axle being pivotably connected to a front leg so the front leg can roll along a support surface, e.g., ground, on the wheel when the wheel is pivoted to a first position and so the front leg's foot can stand stationary on the support surface when the wheel is pivoted to a second position. The wheel is continuously spring loaded toward the first position where the wheel axle abuts the front leg's exterior surface so the walker's wheeled leg is biased into the first position when the walker is not in use, but can be pivoted to the second position in response to a user's downward force on the walker when it is in use.
REFERENCES:
patent: 994194 (1911-06-01), Pratt
patent: 1348531 (1920-08-01), Amadio
patent: 1527239 (1925-02-01), Vaughan et al.
patent: 2176551 (1939-10-01), Solem
patent: 2377649 (1945-06-01), Quinney
patent: 2445942 (1948-07-01), Dusinberre
patent: 2472686 (1949-06-01), Snyder
patent: 2590052 (1952-03-01), Stuits
patent: 2613389 (1952-10-01), Cramer
patent: 2745465 (1960-04-01), Hogan
patent: 2792874 (1957-05-01), Sundberg
patent: 3054623 (1962-09-01), Wimpkins
patent: 3387618 (1968-06-01), Swann
patent: 3743051 (1973-07-01), Cramer
patent: 3826336 (1974-07-01), Cramer
patent: 4109926 (1978-08-01), Lane
patent: 4155423 (1979-05-01), Miller
patent: 4166516 (1979-09-01), Thurmond
patent: 4180086 (1979-12-01), Thomas
patent: 4212493 (1980-07-01), Ledesky
patent: 4251105 (1981-02-01), Barker
patent: 4510956 (1985-04-01), King
patent: 4510957 (1985-04-01), Frank
patent: 4537233 (1985-08-01), Vroonland et al.
Hafer Robert A.
Sam Charles H.
The Kendall Company
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