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| Number | Title | Issue Date |
| 7340788 | Method to improve the firmness of a pillowtop mattress A method for increasing the firmness of a pillowtop or any other soft mattress. The method includes providing a rectangular sheet of cotton fabric material having hook fasteners on one end and loop fasteners on an opposite end to attach the sheet of material around ... | 03/11/2008 |
| 7188379 | Combination air and spring mattress for a sofa sleeper This invention is directed to a mattress assembly for use in a sofa sleeper. The mattress assembly has an outer shell and an inner support received within the outer shell. The shell includes a lower panel, a sidewall, and a cover that fit together to form a cavity t... | 03/13/2007 |
| 7127763 | Crib mattress safety features Safety features for a crib mattress are described. One safety feature is designed to maintain airflow to a fan inlet despite the fan inlet being blocked by a mattress sheet. Another safety feature removes obstructions to airflow within the mattress so that air is di... | 10/31/2006 |
| 6996865 | Mattress structure A mattress comprises a support plate having a plurality of mounting holes, a plurality of independent spring assemblies individually mounted to the support plate, and a cover enclosing the support plate and the plurality of spring assemblies. Each of the spring asse... | 02/14/2006 |
| 5896604 | Support module There is a support module for a posture support device such as a bed mattress. The module comprises upper and lower frames (3A, 3B) connected together by linkages (3C, 3D) which in use of the module within the support device are adapted upon activation by... | 04/27/1999 |
| 5857232 | Mattress for cribs and basinets for sudden infant death prevention The present invention provides a safety device and a method to counter a potential cause of Sudden Infant Death Syndrome. A frame, fit to the dimensions of a crib or bassinet is equipped with an air permeable material that allows for the free flow of fres... | 01/12/1999 |
| 5504952 | Bed having user variable degree of hardness A bed including a base, a mattress overlying the base and apparatus for varying the hardness of the bed to take into account the changing personal circumstances of the user, for example, aging, gaining weight etc. and to compensate for the wear and tear o... | 04/09/1996 |
| 5063625 | Adjustable tensioning of a mattress A mattress construction includes upper and lower structures defining generally parallel planes, and coil springs operatively connected to such structures and located between those lanes, and with at least one of the upper and lower structures including a ... | 11/12/1991 |
| 4677701 | Firmness control device A device for varying the firmness of a body supporting foundation, such as a box spring of a bed assembly or the like, including a vertically movable platform provided with a plurality of spaced resilient cushion members that may be selectively positioned... | 07/07/1987 |
| 4667357 | Sleep unit having adjustable firmness A sleep unit having inner coil springs is adjustable for firmness by movement of an inner plate or frame having portions which extend between selected turns of the springs.... | 05/26/1987 |
| 4222137 | Internal pressure adjustable bed A bed adjustable in hardness distribution of its surface. An elastic member is interposed between a surface side member and a bottom plate of the bed, and the bottom plate is divided in the direction of its plane and each of the bottom plates thus divided... | 09/16/1980 |
