Chairs and seats – Movable back – Tiltable
Patent
1993-03-08
1994-08-30
Cranmer, Laurie K.
Chairs and seats
Movable back
Tiltable
29742326, B60N 202
Patent
active
053421124
ABSTRACT:
Assembly for a chair with adjustable seat back and leg-rest, which comprises a seat frame (14) secured at its two ends by hinges (12) to a seat back frame (13) and to a leg-rest frame (15) , these three frames (13-14-15) including in their lower portions connecting struts (16-25a-25b) positioned between one side and the other of the frames (13-14-15), the seat frame (14) comprising in its lower portion at least two reinforcing cross members (11) having the functions of resting on and being fastened to a basic characterizing structure (17) , the connecting strut (16) of the seat frame (14) bearing one single actuation means (18) that includes an actuation lever (21) which has a first inactive position and second (21a) and third (21b) positions to alter inclination, the second and third positions (21a-21b) to alter inclination cooperating with respective valves (23) which act on positioner jacks (20a-20b) located between the respective connecting struts (16-25a-25b).
REFERENCES:
patent: 3858938 (1975-01-01), Kristensson et al.
patent: 4819987 (1989-04-01), Stringer
patent: 4945582 (1990-08-01), Hayton et al.
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