Locking mechanism for armrest

Details Locking mechanism for armrest Locking mechanism for armrest

1988-08-11

1989-07-18

Zugel, Francis K.

Chairs and seats

Armrest

Attachable to diverse chairs or seats; i.e., portable

297335, A47C 754

Patent

active

048488402

ABSTRACT:
A locking mechanism for armrest which comprises an arcuate slot, a pair of upper and lower catching means each being formed at the upper and lower ends of the slot, respectively, stopper pin slidably inserted through the arcuate slot, and an elastic means mounted on the stopper pin. With the vertical rotation of the armrest, the stopper pin is displaced along the arcuate slot and securely caught in either of said upper and lower catching means, by virtue of the resilient force of the elastic means, which brings the armrest into a locked state in either of a use position and a non-use position.

REFERENCES:
patent: 984474 (1911-02-01), Dann
patent: 1262596 (1918-04-01), Bishop
patent: 2824599 (1958-02-01), Quinlan
patent: 3909063 (1975-09-01), Bonisch et al.
patent: 4219235 (1980-08-01), Heling
patent: 4435011 (1984-03-01), Hakamata
patent: 4558901 (1985-12-01), Yokoyama
patent: 4668010 (1987-05-01), Fujiwara

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