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Class Information
Number: 5/697
Name: Beds > Mattress (for whole body) > Having uniform firmness, changeable by user
Description: Mattress including means to change the supporting characteristics of the mattress as a whole from stiffer to less stiffer modes and vice versa.

Patents under this class:

Patent Number Title Of Patent Date Issued
8613119 Adjustable mattress Dec. 24, 2013
8516635 Mattress structure able to adjust elastic support forces Aug. 27, 2013
8499386 Adjustable cover for a massage device Aug. 6, 2013
8499389 Molded product and use thereof Aug. 6, 2013
8375492 Mattress structure Feb. 19, 2013
8328287 Chair structure Dec. 11, 2012
8245340 Chair structure Aug. 21, 2012
7941882 Magnetic cushioning system May. 17, 2011
7934277 Mattress structure May. 3, 2011
7458121 Health bed capable of adjusting the spine curve of a human body Dec. 2, 2008
7340788 Method to improve the firmness of a pillowtop mattress Mar. 11, 2008
7127763 Crib mattress safety features Oct. 31, 2006
5903941 Air control system for an air bed May. 18, 1999
5896604 Support module Apr. 27, 1999
5857232 Mattress for cribs and basinets for sudden infant death prevention Jan. 12, 1999
5504952 Bed having user variable degree of hardness Apr. 9, 1996
5063625 Adjustable tensioning of a mattress Nov. 12, 1991
4677701 Firmness control device Jul. 7, 1987
4667357 Sleep unit having adjustable firmness May. 26, 1987
4222137 Internal pressure adjustable bed Sep. 16, 1980

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