US Patent No: 7,040,709

Number of patents in Portfolio can not be more than 2000

Back construction for seating unit having inverted U-shaped frame

ALSO PUBLISHED AS: 20050179292

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A back construction includes an inverted U-shaped back frame and a back shell supported on the back frame and having stiff thoracic and pelvic regions connected by a flexible lumbar region in a manner adapted to ergonomically support a seated user. The lumber section includes a plurality of vertically spaced slots to increase its flexibility. The back shell has a complex curved shape that is forwardly concave in horizontal cross section and forwardly convex in vertical cross section. A force-generating mechanism biases the lumber section forwardly for lumbar support to a seated user.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
STEELCASE INC.GRAND RAPIDS, MI553

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dammermann, Arnold B Winona, MN 34 1142
DeKraker, Larry Holland, MI 35 1794
Heidmann, Kurt R Grand Rapids, MI 108 2602
Knoblock, deceased Glenn A Fort Collins, CO 3 118
Knoblock, legal representative Daryl Fort Collins, CO 5 218
Peterson, Gordon J Rockford, MI 58 1649
Roossien, Charles P Wyoming, MI 25 1160
Teppo, David S East Grand Rapids, MI 34 1296

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Chairtech (1)
* 5,718,476 Seat with adjustable lumbar support 71 1996
 
Other [Check patent profile for assignment information] (13)
4,465,317 Mechanism for adjusting a lumbar support of a back of a seat or the like 65 1981
4,621,866 Armchair structure having an adjustable anatomical configuration 21 1985
4,779,925 Height-adjustable swivel chair equipped with gas-pressure spring, especially office chair or office armchair 45 1987
4,848,837 Chair having a pelvis-hip support adjustable relative to a front seat portion 52 1987
4,966,413 Articulated relaxation chair 55 1989
5,062,676 Adjustable chair 36 1990
* 4,993,164 Measuring device 41 1990
5,240,308 Ergonomic adjustable chair and method 44 1991
5,112,108 Seating furniture 22 1991
5,354,120 Reclining chair 76 1992
5,299,851 Adjustable cushion assembly for a chair 57 1993
5,460,427 Seat assembly and method 68 1993
5,474,360 Seatback recliner mechanism 27 1995
 
L&P PROPERTY MANAGEMENT COMPANY (3)
4,948,198 Knee-tilt chair control 18 1988
5,518,294 Variable apex back support 137 1994
5,651,584 Lumbar support structure for automotive vehicle 82 1995
 
Keiper Automobiltechnik GmbH & Co. KG (1)
4,544,204 Back frame for seat, particularly for power vehicle seat 44 1982
 
Herman Miller, Inc. (5)
5,106,157 Chair height and tilt adjustment mechanisms 50 1989
5,192,114 Tilt adjustment control for a chair 40 1991
6,035,901 Woven fabric membrane for a seating surface 170 1995
6,250,715 Chair 46 1999
6,367,876 Chair 42 2001
 
STANT MANUFACTURING INC. (2)
4,913,303 Liquid splash control fuel cap 48 1988
5,529,201 Cam-on filler neck cap 40 1994
 
TRUMOVE DESIGNS INC. (1)
5,660,439 Integrated seat and back and mechanisms for chairs 77 1995
 
STANT USA CORP. (2)
5,110,003 Torque-override cap 56 1990
5,449,086 Delayed actuation fuel cap 55 1993
 
STEELCASE DEVELOPMENT INC., A CORPORATION OF MICHIGAN (19)
4,314,728 Chair control 45 1980
4,390,206 Synchrotilt chair control 78 1980
4,720,142 Variable back stop 66 1986
4,776,633 Integrated chair and control 120 1986
4,951,995 Arm height adjustment mechanism for a chair 60 1989
5,249,839 Split back chair 95 1991
5,320,410 Chair control 54 1992
5,328,242 Chair with back lock 38 1992
5,282,670 Cable actuated variable stop mechanism 34 1992
5,385,388 Split back chair 126 1993
5,540,481 Chair with zero front rise control 36 1994
5,487,591 Back shell with selective stiffening 71 1994
5,577,807 Adjustable chair actuator 103 1994
5,782,536 Modular chair construction and method of assembly 60 1995
5,630,647 Tension adjustment mechanism for chairs 80 1995
5,611,598 Chair having back shell with selective stiffening 56 1996
5,871,258 Chair with novel seat construction 178 1997
5,975,634 Chair including novel back construction 157 1997
6,003,943 Multi-function control for chair 25 1998
 
Steelcase Strafor (2)
4,981,326 Ergonomic chair 94 1988
5,915,788 Multi-function control for chair 23 1997
 
AISIN SEIKI KABUSHIKI KAISHA (1)
4,896,918 Lumbar support regulating apparatus 28 1988
 
ITOKI CREBIO CORPORATION (1)
5,582,459 Chair having tiltable seat back 68 1994
 
FRITZ HANSEN A/S (1)
* 5,340,197 One-piece seat shell 11 1992
 
HAWORTH, INC. (1)
4,595,237 Actuating control for seat height adjustment mechanism 48 1984
 
SKW TROSTBERG AKTIENGESELLSCHAFT (1)
4,309,206 Process for the production of odorless prilled urea-dicyandiamide fertilizers 12 1980
 
JASON INCORPORATED, A WISCONSIN CORPORATION (2)
4,621,864 Tiltable arm rest assembly and mounting and operating means therefor 48 1984
4,709,963 Adjustable office chair 89 1986
 
FIAT AUTO S.P.A. (1)
4,968,093 Adjustable backrest for the seats of vehicles, particularly cars 76 1989
 
GRAMMER SITZYSYSTEME GMBH, WERNHER-VON-BRAUN-STRASSE 6, 8450 AMBERG-I, F.R.G. (1)
4,842,333 Seat 30 1988
 
Etablissements Linguanotto (1)
4,685,730 Seat, especially work seat, with several positions 69 1985
 
PRO-CORD S.R.L., AN ITALIAN LIMITED COMPANY (1)
4,915,449 Chair with a pivoting seat 33 1989
 
J.G. Furniture Systems, Inc. (1)
5,100,201 Passive ergonomic work chair 59 1990
 
Plastic Industries, Inc. (1)
5,107,720 Device for actuating a remotely positioned latch 31 1991
 
AMERICAN SEATING COMPANY (1)
4,861,108 Auditorium seat 40 1988
 
SHIROKI CORPORATION (1)
5,302,002 Hip supporting apparatus of seat 26 1991
 
SCHUKRA GERATEBAU AG (1)
5,050,930 Lordosis-support backrest for a vehicle seat 109 1990
 
Provenda Marketing AG (1)
4,763,950 Tilting chair, especially office chair 45 1986
 
KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO (1)
5,027,022 Reverse rotation preventing mechanism for synchronous motors 18 1990
 
Duphin Entwicklungs-u. Beteiligungs-GmbH (1)
5,564,783 Chair, in particular office chair 33 1994
 
SICAM, SPA (1)
5,120,109 Motor vehicle seat 52 1989
 
B.V. LINIDO, A CORP. OF THE NETHERLANDS (1)
5,447,356 Chair for disabled persons 46 1992
 
Wilkhahn Wilkening & Hahne GmbH & Co. (1)
5,366,274 Synchronous adjusting device for office chairs or the like 63 1993
 
PROTONED B.V., HERENGRACHT 374/376 NL 1016 CH AMSTERDAM (HOLLAND) (1)
4,703,974 Seat furniture 59 1985
 
MDT CORPORATION (1)
5,405,188 Mechanical chair 32 1993
 
KNOLL, INC. (3)
4,380,352 Reclining chair 73 1980
4,906,045 Chair control for a pedestal chair having a knee-tilt seat 31 1989
5,029,940 Chair tilt and chair height control apparatus 79 1990
 
TACHI-S CO., LTD. (2)
5,044,693 Seat back structure of an automotive seat 50 1989
5,087,098 Lumbar support device 35 1990
 
CESA - COMPAGNIE EUROPEENNE DE SIEGES POUR AUTOMOBILES (1)
* 5,567,017 Framework element for a seat, component making use thereof, and its use especially for vehicle seat 18 1995
 
LEGGETT & PLATT, INCORPORATED (1)
4,889,384 Knee-action chair control 50 1988
 
Shelby Williams Industries, Inc. (1)
5,039,163 Reinforced flexible backrest assembly for a chair 61 1989
 
Special Health Systems Ltd. (1)
5,573,302 Lower back support 36 1994
 
KIMBALL INTERNATIONAL, INC. (1)
* 5,308,145 Reclining chair 45 1992
 
Nepsco, Inc. (1)
4,502,728 Portable seat and back rest 60 1982
 
LANE FURNITURE INDUSTRIES, INC. (1)
5,056,862 Recessed lever actuator for recliner mechanism 27 1990
 
DEPERRY, SHIELA H. (2)
5,009,466 Reclining chair 51 1989
5,338,094 Flexible reclining chair 33 1993
 
Castelli S.p.A. (1)
4,585,272 Chair having a back comprising a plurality of articulated segments 116 1983
 
FORD MOTOR COMPANY (1)
4,638,679 Adjusting mechanism for a Bowden cable 17 1984
 
Girsberger Holding AG (1)
4,834,453 Swivel chair 40 1987
 
Roho, Inc. (1)
* 5,364,162 Backrest assembly for a wheelchair 55 1991
 
TAKANO CO., LTD. (1)
5,102,196 Chair provided with a backrest 114 1990
 
Engineered Components, Inc. (1)
5,277,475 One piece back support for a chair 32 1992
 
FISHER DYNAMICS CORPORATION (1)
5,590,932 Anti-chuck seat recliner 43 1994
 
Tachikawa Spring Co., Ltd. (1)
4,641,884 Seat for vehicles 44 1986
 
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY (1)
5,597,203 Seat with biomechanical articulation 66 1994
 
FINDLAY INDUSTRIES, INC. (1)
5,217,278 Mechanism for providing adjustable lumbar support in a seat 164 1991
 
J. E. Ekornes A/S (2)
4,984,846 Arrangement in an adjustable chair 41 1989
5,472,261 Arrangement in a recline chair 45 1993
 
GISPEN + STAALMEUBEL B.V. (1)
4,521,053 Chair 66 1982
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
5,505,520 Passenger seat with adjustable lumbar support 67 1994
 
L&P/YOUNG SPRING ACQUISITION COMPANY, INC., A CORP. OF DE (1)
4,880,271 Adjustable lumbar support 81 1988
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
D545089 Chair frame 0 2005
 
HAWORTH, INC. (1)
8,272,693 Tension mechanism for a weight-responsive chair 0 2010
 
ITOKI CORPORATION (1)
* 7,896,439 Chair 9 2006
 
OKAMURA CORPORATION (1)
* 2013/0207,427 CHAIR WITH ARMREST 0 2011
 
FAURECIA AUTOMOTIVE SEATING, LLC (1)
8,857,908 Controllable comfort shell for vehicle seat 0 2010
 
Herman Miller, Inc. (1)
8,449,037 Seating structure with a contoured flexible backrest 2 2011
 
Steelcasel Inc. (1)
* 9,027,997 Chair assembly 0 2013
 
ALLSTEEL INC. (1)
D731833 Chair 0 2014
 
STEELCASE INC. (9)
7,841,665 Height adjustable armrest 37 2007
* 9,027,998 Chair assembly 0 2013
* 9,027,999 Control assembly for chair 0 2013
* 9,022,476 Control assembly for chair 0 2013
* 9,010,859 Chair assembly 0 2013
* 2014/0077,555 Chair Assembly 0 2013
* 2014/0077,556 Control Assembly for Chair 0 2013
* 2014/0077,557 Control Assembly for Chair 0 2013
* 2014/0077,549 Chair Assembly 0 2013
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 9, 2017
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00