Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Walker type
Patent
1978-08-31
1979-12-25
Machado, Reinaldo P.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Walker type
135 74, F16M 1308
Patent
active
041800869
ABSTRACT:
An invalid walker includes a means for locking at least one of the side frames in a hyperextended position. The walker includes a pair of U-shaped side frames whose front legs are connected by a cross brace member. Each of the rear legs of the side frames is connected to the cross brace member by a telescoping tubular device in which a first tube telescopes into and is received by a second tube. A pushbutton mechanism is housed inside the first tube and positioned within a first aperture in the first tube. The second tube includes a pair of locking apertures, one for locking the side frame in a first normal open position and the second for locking the side frame in a hyperextended position. The apparatus further includes a foot adjustment means for levelling the rubber foot of the hyperextended rear leg of the hyperextended side frame with the feet of the other three legs of the apparatus.
REFERENCES:
patent: 598405 (1898-02-01), Williams
patent: 2796916 (1957-06-01), Womble
patent: 3516425 (1970-06-01), Rigal
patent: 3658079 (1972-04-01), Block
patent: 3993088 (1976-11-01), Thomas
patent: 4056115 (1977-11-01), Thomas
Machado Reinaldo P.
Temco Products, Inc.
Woodbridge Richard C.
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