Chairs and seats – Bottom or back – Directly connected bottom and back
Patent
1996-01-26
1997-03-18
Brown, Peter R.
Chairs and seats
Bottom or back
Directly connected bottom and back
2973033, 29745215, A47C 312
Patent
active
056115989
ABSTRACT:
A chair includes a base, a seat, a back pivoted to the base and an inner shell construction connecting a cushion assembly to the back. The shell includes a semi-rigid, flexible sheet having a back portion shaped to support a back area of an adult user. The back portion includes a central area and an upper area. A plurality of ribs are formed integrally with the sheet to stiffen the central area of the back portion for lumbar support yet permit the upper portion of the back portion to flex for improved freedom of movement of the upper back area of the user.
REFERENCES:
patent: Re24964 (1961-04-01), Eames
patent: 2731076 (1956-01-01), Cadman et al.
patent: 2745468 (1956-05-01), Kramer
patent: 2818107 (1957-12-01), Thaden
patent: 3059971 (1962-10-01), Becker
patent: 3206251 (1965-09-01), Stevens
patent: 3233885 (1966-02-01), Propst
patent: 3512835 (1970-05-01), Flototto
patent: 3669496 (1972-06-01), Chisholm
patent: 3669499 (1972-06-01), Semplonius
patent: 3695707 (1972-10-01), Barecki et al.
patent: 3734561 (1973-05-01), Barecki et al.
patent: 3823518 (1974-07-01), Allen
patent: 3824664 (1974-07-01), Seeff
patent: 3851920 (1974-12-01), Harris et al.
patent: 3883176 (1975-05-01), Morton
patent: 3907363 (1975-09-01), Baker et al.
patent: 3995080 (1976-11-01), Cogburn et al.
patent: 4000925 (1977-01-01), Doerr et al.
patent: 4002369 (1977-01-01), Jennings
patent: 4012549 (1977-03-01), Slysh
patent: 4065182 (1977-12-01), Braniff et al.
patent: 4073539 (1978-02-01), Caruso
patent: 4084850 (1978-04-01), Ambasz
patent: 4088367 (1978-05-01), Atkinson et al.
patent: 4123105 (1978-10-01), Frey et al.
patent: 4133579 (1979-01-01), Springfield
patent: 4314728 (1982-02-01), Faiks
patent: 4390206 (1983-06-01), Faiks et al.
patent: 4408800 (1983-10-01), Knapp
patent: 4413579 (1983-11-01), Springfield
patent: 4418958 (1983-12-01), Watkin
patent: 4451085 (1984-05-01), Franck et al.
patent: 4498702 (1985-02-01), Raftery
patent: 4502731 (1985-03-01), Snider
patent: 4509793 (1985-04-01), Wiesmann et al.
patent: 4519651 (1985-05-01), Whitwam
patent: 4529247 (1985-07-01), Stumpf et al.
patent: 4533174 (1985-08-01), Fleishman
patent: 4548441 (1985-10-01), Ogg
patent: 4556254 (1985-12-01), Roberts
patent: 4585272 (1986-04-01), Ballarini
patent: 4632458 (1986-12-01), Brown et al.
patent: 4641885 (1987-02-01), Brauning
patent: 4717202 (1988-01-01), Batchelder, III et al.
patent: 4744603 (1988-05-01), Knoblock
patent: 4776633 (1988-10-01), Knoblock et al.
patent: 5050931 (1991-09-01), Knoblock
patent: 5318346 (1994-06-01), Roossien et al.
patent: 5540481 (1996-07-01), Roossien et al.
Exhibit A is a brochure entitled "Steelcase-ConCentrx Control Center Seating," disclosing a prior art chair.
Exhibit B is a photograph of a back surface of a back shell for the ConCentrx chair of Exhibit A.
Exhibit C is a brochure entitled "Herman Miller" disclosing their prior art Vitra.TM. chair.
Exhibit D is a brochure entitled "Steelcase 451 Series Chairs" disclosing a prior art chair.
Exhibit E is a brochure entitled "454 Comfort Chair" disclosing a prior art Steelcase chair.
Exhibit F is a photograph of a ConCentrx.RTM. chair in prior art.
Exhibit G is a photograph of a Steelcase 424 chair in prior art.
Exhibit H is a photograph of a Steelcase 424 back shell in prior art.
Exhibit I is a photograph of an Equa.TM. chair in prior art.
Exhibit J is a photograph of a Vitra.TM. chair in prior art.
Exhibit K is a photograph of a Vitra.TM. back piece in prior art.
Brown Peter R.
Steelcase Inc.
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