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Class Information
Number: 5/935
Name: Beds > With adjustable firmness
Description: A collection of documents disclosing the use of body supports, with at least a portion of the user supporting surface of the body support having a variable or adjustable support characteristic, firmness or hardness, with the support characteristic, firmness or hardness changeable from one fixed value to another fixed value.

Patents under this class:

Patent Number Title Of Patent Date Issued
7941882 Magnetic cushioning system May. 17, 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
7251845 Patient bed, and method for reproducibly positioning and supporting a patient therewith Aug. 7, 2007
6955527 Two-way mounting air pump with an inflation mode and a deflation mode Oct. 18, 2005
6907633 Zoning of inflatable bladders Jun. 21, 2005
6793289 Seat back or seat base of an automobile seat Sep. 21, 2004
6686711 Air mattress control system and method Feb. 3, 2004
6483264 Air control system for an air bed Nov. 19, 2002
6378152 Mattress structure Apr. 30, 2002
6253401 Air mattress system Jul. 3, 2001
6243899 Mattress device Jun. 12, 2001
6037723 Air control system for an air bed Mar. 14, 2000
5652484 Air control system for an air bed Jul. 29, 1997
5547253 Sit/stand adjustable, tower chair Aug. 20, 1996
5526543 Method and apparatus for treating or preventing bed sores Jun. 18, 1996
5509154 Air control system for an air bed Apr. 23, 1996
5283735 Feedback system for load bearing surface Feb. 1, 1994
4945591 Cushionlike item with projections attached thereto by strings Aug. 7, 1990
4754511 Support cushions Jul. 5, 1988
4547918 Body supporting network Oct. 22, 1985
4222137 Internal pressure adjustable bed Sep. 16, 1980
4094025 Water mattress Jun. 13, 1978

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