Chairs with foldable backs

Details Chairs with foldable backs Chairs with foldable backs

1988-11-22

1989-11-21

Brown, Peter R.

Chairs and seats

Movable back

Tiltable

297378, 403 96, 403102, A47C 740

Patent

active

048817767

ABSTRACT:
A chair structure has a lower chair seat section and an upper chair back section. The chair back section has a U-shaped upper back frame member and two lower back frame members. Each of the lower back frame members is connected to the upper back frame member by an upper connector and a lower connector which are respectively secured to the upper back frame member and the lower back frame member. The upper and lower connectors are rotatably interconnected by a pivot member and releasably interlocked by a lock mechanism. The lock mechanism may be either a spring biased ball unit or a nut and bolt unit. When the lock mechanism is released, the upper back frame member may be folded to rest on the lower back frame members.

REFERENCES:
patent: 121362 (1871-11-01), Hanner
patent: 1732508 (1929-10-01), Farris
patent: 1791765 (1931-02-01), Saunders et al.
patent: 2042886 (1936-06-01), Fergusen
patent: 2400630 (1946-05-01), Cramer et al.
patent: 2636552 (1953-04-01), Long
patent: 3645212 (1972-02-01), Dahlstrom
patent: 4286353 (1981-09-01), Roche

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