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Class Information
Number: 5/936
Name: Beds > With adjustable firmness comprising springs
Description: A collection of documents comprising spring devices that have variable or adjustable support characteristics, with the support characteristics of the spring changeable from one fixed value to another fixed value.

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
8407833 Deformable supporting element and reclining system Apr. 2, 2013
8375492 Mattress structure Feb. 19, 2013
8328287 Chair structure Dec. 11, 2012
8256043 Support element for a cushion cover for seating and lying areas Sep. 4, 2012
8245340 Chair structure Aug. 21, 2012
7934277 Mattress structure May. 3, 2011
7748066 Mattress center ridge compensator Jul. 6, 2010
7458121 Health bed capable of adjusting the spine curve of a human body Dec. 2, 2008
5625914 Automatic mattress surface contour and support changing apparatus with wave sensors May. 6, 1997
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
4547918 Body supporting network Oct. 22, 1985
4222137 Internal pressure adjustable bed Sep. 16, 1980
3995337 Mattress construction Dec. 7, 1976

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