Chairs and seats – Movable back – Tiltable
Patent
1984-05-30
1986-02-18
Lyddane, William E.
Chairs and seats
Movable back
Tiltable
74 8915, B60N 102
Patent
active
045709998
ABSTRACT:
The seat has a cushion portion and a back portion connected thereto by a pivot. The back portion is rotated relative to the cushion portion about the pivot by a flexible threaded tube rotatably attached to the frame of the cushion portion and passing through a threaded member on the back portion. Rotation of the tube by means of a hand wheel, or an electric motor, drives the threaded member. The thread is selected to be self-locking.
REFERENCES:
patent: 2580889 (1952-01-01), Carlson
patent: 2596760 (1952-05-01), Bryant
patent: 2653648 (1953-09-01), Marshall
Chen José V.
I.H.W. Engineering Ltd.
Lyddane William E.
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