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Class Information
Number: 297/452.1
Name: Chairs and seats > Bottom or back
Description: Device including a seating device having structure configured to support or engage a back or buttocks of a seated occupant.










Sub-classes under this class:

Class Number Class Name Patents
297/452.39 Cantilevered bottom or back 39
297/452.29 Contoured back 54
297/452.21 Contoured bottom 105
297/452.48 Cushioned 95
297/452.11 Directly connected bottom and back 38
297/452.18 Framework 349
297/452.4 Having a laterally adjustable dimension 41
297/452.38 Having a trim panel 89
297/452.41 Having fluent material 247
297/452.42 Including a ventilating means 59
297/452.63 Made of individual elongated members extending across a support frame (e.g., webs, straps, slats, stringed beads, etc.) 126
297/452.65 Rigid or semirigid hollow shell 76


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8691370 Multi-layered support structure Apr. 8, 2014
8657382 Structural part, vehicle seat comprising a back rest, and method for producing a structural part or a back rest Feb. 25, 2014
8573704 Anti-ballistic chairs Nov. 5, 2013
8505186 Method of fabricating a chair Aug. 13, 2013
8328287 Chair structure Dec. 11, 2012
8249947 Vehicle seat component selection system Aug. 21, 2012
8131513 Method and system of computer assisted vehicle seat design Mar. 6, 2012
8087730 Combined backrest for a chair Jan. 3, 2012
7931340 Tetraframe component of furniture Apr. 26, 2011
7905550 Structural element for vehicle seat Mar. 15, 2011
7461442 Assembly apparatus and process for a chair back Dec. 9, 2008
7395590 Method for assembling a frame assembly for a chair Jul. 8, 2008
7250091 Method of forming a seating system Jul. 31, 2007
6824211 Head restraint and method of making and using same Nov. 30, 2004
6578911 Seat provided with air bag module Jun. 17, 2003
6375261 Chair Apr. 23, 2002
6254190 Chair having a seat with differential front and rear support portions Jul. 3, 2001
6250718 Support member for a chair back Jun. 26, 2001
6168239 Seat back with shaped internal ribs Jan. 2, 2001
6109696 Chair with chair back attachment Aug. 29, 2000
5997096 Chair with a seat-supporting unit capable of resisting left and right tilting of a seat supported thereon Dec. 7, 1999
5976664 Curved molding, in particular for furniture Nov. 2, 1999
5904407 Aircraft seat pan assembly May. 18, 1999
5816659 Temporary seat for vehicles Oct. 6, 1998
5690389 Pneumatic, ball-shaped chair Nov. 25, 1997
5681091 Aircraft seat pan assembly Oct. 28, 1997
5542743 Task chair Aug. 6, 1996
5538325 Drop-in seat and spring clip usable therewith Jul. 23, 1996
5416936 Rolling-massaging mattress or cushion May. 23, 1995
5405178 Fire resistant vehicle seat Apr. 11, 1995
5352021 Seat assembly for chairlift Oct. 4, 1994
5348378 Pressure balanced torsion system for a backrest and the like Sep. 20, 1994
5346285 Structurally reinforced furniture frames Sep. 13, 1994
5338097 Furniture construction Aug. 16, 1994
5338100 High strength automotive seat frame and method Aug. 16, 1994
5338260 Children's swing Aug. 16, 1994
5335975 Body support system Aug. 9, 1994
5333933 Seat with a trim cover assembly having plural stitches thereon Aug. 2, 1994
5295732 Back of vehicle seats Mar. 22, 1994
5284381 Structure of seat cushion frame in automotive seat Feb. 8, 1994
5253924 Blow molded seat back with integral reinforcing member Oct. 19, 1993
5251962 Seat back structure in vehicle seat Oct. 12, 1993
5248186 Bumper edge guard for upholstered seating furniture having a core member Sep. 28, 1993
5236247 Insert molded composite plastic seat cushion frame Aug. 17, 1993
5219205 Enveloping covering for a seat, and its application to vehicle seats Jun. 15, 1993
5131718 Adjustable chair Jul. 21, 1992
5096760 Covered soft foam article Mar. 17, 1992
5085487 Seat with foamed plastic padding and process for its manufacture Feb. 4, 1992
5054845 Passenger seat having yielding band structure Oct. 8, 1991
5052647 Quick release coupler Oct. 1, 1991

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