Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Walker type
Patent
1985-05-02
1987-02-03
Hafer, Robert A.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Walker type
135 74, 403 85, 403 98, 403325, 403328, A61H 300
Patent
active
046403019
ABSTRACT:
A locking assembly is disclosed which is suitable for releasably locking two articulated pivoting members in a fixed position with respect to each other. The locking assembly comprises a spring biased reciprocating latch, a plunger attached to the latch, and a catch plate adapted to rotate into locking engagement therewith. The plunger and latch are preferably integral with each other, so that the latch contains a minimum number of moving parts. The latch is designed so that simple palm pressure will cause it to disengage from the catch plate, to permit the pivoting members to move with respect to each other. The present locking assembly is of simple design and inexpensive manufacture, and is durable in use. The locking assembly is particularly applicable for use in invalid appliances such as collapsible walkers, where the users have limited manual dexterity. The simple design of the present locking assembly assures a minimum of mechanical breakdown in use, that is particularly important in the instance where the user of the device is infirm or elderly.
The present invention also includes a collapsible walker utilizing the present locking assembly.
REFERENCES:
patent: 1119505 (1914-12-01), Green
patent: 2796916 (1957-06-01), Womble
patent: 2839321 (1958-06-01), Selig
patent: 2926034 (1960-02-01), Weaver
patent: 3691866 (1972-09-01), Berkes
patent: 3945389 (1976-03-01), Smith
patent: 3993088 (1976-11-01), Thomas
patent: 4056115 (1977-11-01), Thomas
patent: 4244237 (1981-01-01), Sprunger
patent: 4298016 (1981-11-01), Garelick
Battiston, Jr. Joseph
Battiston, Sr. Joseph D.
Hafer Robert A.
Jackson David A.
Kramer Arnold W.
Tubular Fabricators Industry, Inc.
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