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Class Information
Number: 297/284.4
Name: Chairs and seats > Bottom or back with means to alter contour > Providing support for lower back (i.e., lumbar) region
Description: Device wherein the adjustable contour is provided in the area adapted to contact the lower back region of a seated occupant.










Sub-classes under this class:

Class Number Class Name Patents
297/284.6 Having a fluent material within flexible container 186
297/284.5 Portable with seat attacher 85
297/284.8 Rectilinear horizontal adjustment 87
297/284.7 Rectilinear vertical adjustment 166


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8690242 Back support Apr. 8, 2014
8684460 Backrest structure for a seat with lumbar support and curving element comprising a pre-tensioning connecting element Apr. 1, 2014
8678495 Vehicle seat with cushion plate Mar. 25, 2014
8668266 Integrated lumbar for thin seat Mar. 11, 2014
8662483 Shock absorber for vehicle seat Mar. 4, 2014
8651574 Office chair Feb. 18, 2014
8651575 Seat back structure with lumbar support for vehicle Feb. 18, 2014
8632126 Vehicle seat Jan. 21, 2014
8632129 Adjustable backrest Jan. 21, 2014
8622474 Mobile ergonomic rotating adjustable chair with lumbar support Jan. 7, 2014
8622468 Seat back device Jan. 7, 2014
8608243 Vehicle seat Dec. 17, 2013
8596724 Cushion-less aircraft seat Dec. 3, 2013
8590979 Seatback device Nov. 26, 2013
8567863 Back support, orientation mechanism and method Oct. 29, 2013
8562073 Vehicle seat Oct. 22, 2013
8544953 Lumbar support assembly and corresponding seat structure Oct. 1, 2013
8544954 Adjusting device for a lumbar support and method of adjusting a lumbar support Oct. 1, 2013
8528980 Seat back unit Sep. 10, 2013
8517469 Three-axis adjustable back support assembly and method Aug. 27, 2013
8485603 Loose fill cushions having internal support member Jul. 16, 2013
8480171 Office chair Jul. 9, 2013
8474909 Power lift lumbar support system Jul. 2, 2013
8474908 Seat element and seating system Jul. 2, 2013
8454090 Pelvic and lumbar support system Jun. 4, 2013
8449037 Seating structure with a contoured flexible backrest May. 28, 2013
8444219 Vehicle seat with cushion plate May. 21, 2013
8439441 Adjustable lumbar assembly for vehicle seats May. 14, 2013
8408639 Vehicle seat Apr. 2, 2013
8398170 Active response seating system Mar. 19, 2013
8382204 Modular contour support apparatus Feb. 26, 2013
8360522 Vehicle seat Jan. 29, 2013
8360523 Adjusting device for a lumbar support and method of adjusting a lumbar support Jan. 29, 2013
8356531 Actuating element for a device moved by a traction rope and a lordosis supporting element Jan. 22, 2013
8333431 Lumbar supporting device for vehicle Dec. 18, 2012
8313140 Vehicle seat and method of assembling vehicle seat Nov. 20, 2012
8313143 Chair back with lumbar and pelvic supports Nov. 20, 2012
8308241 Mobile ergonomic rotating adjustable chair with lumbar support Nov. 13, 2012
8308240 Adjustable lumbar support assembly for a chair Nov. 13, 2012
8272691 Resilient lower-back supporting device capable of vertical adjustment along with backrest of chair Sep. 25, 2012
8240763 Lumbar support mechanism for vehicle Aug. 14, 2012
8235467 Vehicle seat Aug. 7, 2012
8226165 Vehicle seat Jul. 24, 2012
8210612 Tension fabric lumbar support system Jul. 3, 2012
8201886 Lumbar support Jun. 19, 2012
8162398 Zone lumbar massage system Apr. 24, 2012
8162399 Lumbar support for a vehicle backrest Apr. 24, 2012
8157325 Chair back rest with improved resilience and support Apr. 17, 2012
8136882 Multi-way adjustment device for a seat component and/or a cable Mar. 20, 2012
8132858 Vehicle seat with cushion plate Mar. 13, 2012

1 2 3 4 5 6 7 8 9 10










 
 
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