Back height adjustment mechanism for a chair

Details Back height adjustment mechanism for a chair Back height adjustment mechanism for a chair

1996-05-15

1998-01-27

Cuomo, Peter M.

Chairs and seats

Movable back

29741136, B60N 222

Patent

active

057115761

ABSTRACT:
A low cost task chair comprises a blow molded seat support member having a central planar portion for attachment of a control bracket. A recess in the planar portion beneath the control bracket receives a cross brace. A pair of arm support frames are secured to the ends of the cross brace and to the control bracket. The arms are, therefore, easily assembled to the chair with the cross brace concealed from view. A pedestal is secured to the control bracket and contains a gas cylinder for raising and lowering the seat assembly. Another recess is formed in the seat support member for receiving a flush mounted cylinder actuating lever. A seat back adjustment mechanism for adjusting the outward position of the back relative to the seat comprises a pair of parallel spaced tubular members telescopingly received by the control bracket. A blow molded back support is provided with wedge-shaped channels for receiving a pair of tubular members of a back support frame, thereby providing for a back height adjustment feature.

REFERENCES:
patent: 2577050 (1951-12-01), Van Buren
patent: 2599301 (1952-06-01), Van Buren
patent: 2784769 (1957-03-01), Fisher

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