Seat suspension

Details Seat suspension Seat suspension

2007-08-28

2010-11-23

McPartlin, Sarah B (Department: 3636)

Chairs and seats

Bottom or back

Cushioned

C297S452550, C297S452490

Reexamination Certificate

active

07837273

ABSTRACT:
A seat suspension that includes at least one beam spring that extends across a seat pan. In one preferred embodiment, a pair of such springs is carried by the pan. The springs preferably differ in compliance from one another and from a mesh load supporting grid that is connected to each spring. One such arrangement produces a suspension of progressive construction that enables the seat to handle a wide range of shocks, bumps, jolts, and vibration of varying frequencies and magnitudes.

REFERENCES:
patent: 2085475 (1937-06-01), Saives
patent: 2316628 (1943-04-01), Schaffner
patent: 3107944 (1963-10-01), Baermann
patent: 3176323 (1965-04-01), Degen
patent: 3649077 (1972-03-01), Flint
patent: 3819232 (1974-06-01), Wagner
patent: 4222134 (1980-09-01), Degen
patent: 4638517 (1987-01-01), Yang et al.
patent: 4685738 (1987-08-01), Tinus
patent: 5405179 (1995-04-01), Jih
patent: 6361117 (2002-03-01), Tate
patent: 6733084 (2004-05-01), Butler
patent: 7347499 (2008-03-01), Slabaugh et al.

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