Back construction for seating unit having spring bias

Details Back construction for seating unit having spring bias Back construction for seating unit having spring bias

2006-01-31

2006-01-31

Nelson, Jr., Milton (Department: 3636)

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

C297S452150, C297S452310, C297S452360

Reexamination Certificate

active

06991291

ABSTRACT:
A back construction includes a back shell having stiff thoracic and pelvic regions connected by a flexible lumbar region in a manner adapted to ergonomically support a seated user. The back shell includes springs that press on a rear surface of the back shell to bias the flexible lumbar region forwardly so as to support a seated user, thus biasing the lumbar region of the back shell forwardly in a manner distributing stress applied to the lumbar region by the seated user.

REFERENCES:
patent: 293833 (1884-02-01), Winchester
patent: 362796 (1887-05-01), Tait
patent: 1590240 (1926-06-01), Gorton
patent: 2087254 (1937-07-01), Herold
patent: 2139028 (1938-12-01), Mensendicck et al.
patent: 2471024 (1949-05-01), Cramer
patent: 2492107 (1949-12-01), Orton et al.
patent: 2497024 (1950-02-01), Cramer
patent: 2627898 (1953-02-01), Jackson
patent: 2712346 (1955-07-01), Sprinkle
patent: 2818911 (1958-01-01), Syak
patent: 2894565 (1959-07-01), Conner
patent: 3106423 (1963-10-01), Schwarz
patent: 3369840 (1968-02-01), Dufton
patent: 3565482 (1971-02-01), Blodee
patent: 3813148 (1974-05-01), Kraus
patent: 3877750 (1975-04-01), Scholpp
patent: 3926286 (1975-12-01), Johnson
patent: 3934932 (1976-01-01), Ekornes
patent: 3948558 (1976-04-01), Obermeier et al.
patent: 3982785 (1976-09-01), Ambasz
patent: 3989297 (1976-11-01), Kerstholt
patent: 4007962 (1977-02-01), Muller-Deisig
patent: 4054318 (1977-10-01), Costin
patent: 4083209 (1978-04-01), Sloan, Jr.
patent: 4084850 (1978-04-01), Ambasz
patent: 4099775 (1978-07-01), Mizelle
patent: 4157203 (1979-06-01), Ambasz
patent: 4309206 (1982-01-01), Michaud et al.
patent: 4314728 (1982-02-01), Faiks
patent: 4316632 (1982-02-01), Brauning
patent: 4333683 (1982-06-01), Ambasz
patent: 4380352 (1983-04-01), Diffrient
patent: 4390206 (1983-06-01), Faiks et al.
patent: 4449752 (1984-05-01), Yasumatsu et al.
patent: 4465317 (1984-08-01), Schwarz
patent: 4502728 (1985-03-01), Sheldon et al.
patent: 4521053 (1985-06-01), de Boer
patent: 4544204 (1985-10-01), Schmale
patent: 4585272 (1986-04-01), Ballarini
patent: 4595237 (1986-06-01), Nelsen
patent: 4621864 (1986-11-01), Hill
patent: 4621866 (1986-11-01), Zani
patent: 4638679 (1987-01-01), Tannenlaufer
patent: 4641884 (1987-02-01), Miyashita et al.
patent: 4685730 (1987-08-01), Linguanotto
patent: 4703974 (1987-11-01), Brauning
patent: 4709963 (1987-12-01), Uecker et al.
patent: 4720142 (1988-01-01), Holdredge et al.
patent: 4763950 (1988-08-01), Tobler
patent: 4776633 (1988-10-01), Knoblock et al.
patent: 4779925 (1988-10-01), Heinzel
patent: 4834453 (1989-05-01), Makiol
patent: 4842333 (1989-06-01), Meiller
patent: 4848837 (1989-07-01), Volkle
patent: 4861108 (1989-08-01), Acton et al.
patent: 4880271 (1989-11-01), Graves
patent: 4889384 (1989-12-01), Sulzer
patent: 4896918 (1990-01-01), Hoshihara
patent: 4906045 (1990-03-01), Hofman
patent: 4913303 (1990-04-01), Harris
patent: 4915449 (1990-04-01), Piretti
patent: 4948198 (1990-08-01), Crossman
patent: 4951995 (1990-08-01), Teppo et al.
patent: 4966413 (1990-10-01), Palarski
patent: 4968093 (1990-11-01), Dal Monte
patent: 4981326 (1991-01-01), Heidmann
patent: 4984846 (1991-01-01), Ekornes
patent: 4993164 (1991-02-01), Jacobsen
patent: 5009466 (1991-04-01), Perry
patent: 5027022 (1991-06-01), Tanaka et al.
patent: 5029940 (1991-07-01), Golynsky et al.
patent: 5039163 (1991-08-01), Tolleson
patent: 5044693 (1991-09-01), Yokota
patent: 5050930 (1991-09-01), Schuster et al.
patent: 5056862 (1991-10-01), May et al.
patent: 5062676 (1991-11-01), Mars
patent: 5087098 (1992-02-01), Ishizuka
patent: 5100201 (1992-03-01), Becker, III et al.
patent: 5102196 (1992-04-01), Kaneda et al.
patent: 5106157 (1992-04-01), Nagelkirk et al.
patent: 5107720 (1992-04-01), Hatfield
patent: 5110003 (1992-05-01), MacWilliams
patent: 5112108 (1992-05-01), Zapf
patent: 5120109 (1992-06-01), Rangoni
patent: 5192114 (1993-03-01), Hollington et al.
patent: 5217278 (1993-06-01), Harrison et al.
patent: 5240308 (1993-08-01), Goldstein et al.
patent: 5249839 (1993-10-01), Faiks et al.
patent: 5277475 (1994-01-01), Brandes
patent: 5282670 (1994-02-01), Karsten et al.
patent: 5299851 (1994-04-01), Lin
patent: 5302002 (1994-04-01), Nagasaka
patent: 5320410 (1994-06-01), Faiks et al.
patent: 5328242 (1994-07-01), Steffens et al.
patent: 5338094 (1994-08-01), Perry
patent: 5354120 (1994-10-01), Volkle
patent: 5364162 (1994-11-01), Bar et al.
patent: 5366274 (1994-11-01), Roericht et al.
patent: 5385388 (1995-01-01), Faiks et al.
patent: 5405188 (1995-04-01), Hanson
patent: 5447356 (1995-09-01), Snijders
patent: 5449086 (1995-09-01), Harris
patent: 5460427 (1995-10-01), Serber
patent: 5472261 (1995-12-01), Oplenskdal et al.
patent: 5474360 (1995-12-01), Chang
patent: 5487591 (1996-01-01), Knoblock
patent: 5505520 (1996-04-01), Frusti et al.
patent: 5518294 (1996-05-01), Ligon, Sr. et al.
patent: 5529201 (1996-06-01), Tallent et al.
patent: 5540481 (1996-07-01), Roossien et al.
patent: 5564783 (1996-10-01), Elzenbeck et al.
patent: 5573302 (1996-11-01), Harrison et al.
patent: 5577807 (1996-11-01), Hodge
patent: 5582459 (1996-12-01), Hama et al.
patent: 5590932 (1997-01-01), Olivieri
patent: 5597203 (1997-01-01), Hubbard
patent: 5611598 (1997-03-01), Knoblock
patent: 5630647 (1997-05-01), Heidmann et al.
patent: 5651584 (1997-07-01), Chenot et al.
patent: 5660439 (1997-08-01), Unwalla
patent: 5718476 (1998-02-01), De Pascal et al.
patent: 5782536 (1998-07-01), Heidmann
patent: 5871258 (1999-02-01), Battey
patent: 5915788 (1999-06-01), Schneider
patent: 5975634 (1999-11-01), Knoblock et al.
patent: 6003943 (1999-12-01), Schneider
patent: 6035901 (2000-03-01), Stumpf
patent: 6250715 (2001-06-01), Caruso
patent: 6367876 (2002-04-01), Caruso
patent: 1044354 (1958-11-01), None
patent: 948544 (1962-09-01), None
patent: 91099595 (1991-10-01), None
patent: 0043242 (1982-01-01), None
patent: 516341 (1992-12-01), None
patent: 680713 (1995-08-01), None
patent: 708283 (1931-07-01), None
patent: 761805 (1956-11-01), None
patent: 794138 (1958-06-01), None
patent: 1278501 (1972-06-01), None
patent: S5226229 (1977-03-01), None
patent: S5283812 (1977-07-01), None
patent: S5284714 (1977-07-01), None
patent: WO 8700738 (1987-02-01), None
patent: WO 9325121 (1993-12-01), None

Affiliated with

Also associated with

Rating

Back construction for seating unit having spring bias does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Back construction for seating unit having spring bias, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back construction for seating unit having spring bias will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3548979