Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7100989 | Collapsible seat cushion A collapsible cushion for integration into an automobile seat is provided. The collapsible cushion includes a first cushion plate and a second cushion plate with a plurality of springs interposed between the plates. The first plurality of springs is rotatably attach... | 09/05/2006 |
| 6966085 | Sleep system A sleep system, for providing a bed, includes a frame with cross support members coupled with a first and second panel assembly. A sleep support mechanism operationally engages the first and second panel assemblies with one another and further engages a pad to provi... | 11/22/2005 |
| 6032307 | Collapsible bedding product A bedding product comprising a collapsible spring assembly, a pad covering the spring assembly and a fabric covering encasing the padded spring assembly. The spring assembly comprises a plurality of collapsible spring modules connected to a plurality of s... | 03/07/2000 |
| 5765240 | Spring bedding product collapsible in the transverse direction, and method of making it A bedding product comprising a collapsible spring assembly, a pad covering the spring assembly and a fabric covering encasing the padded spring assembly. The spring assembly comprises a plurality of collapsible spring modules connected to a plurality of s... | 06/16/1998 |
| 5551104 | Collapsible sofa bed mattress A mattress of a sofa bed contains a portion which is collapsible and portions which are conventional and non-collapsible. The collapsible and non-collapsible portions are hinged to fold within a sofa bed frame.... | 09/03/1996 |
| 5426799 | Mattress system The invention relates to a generic mattress system which is easily adjustable to differing and space varying stresses with limiting spring paths. It has a top mattress and a bottom mattress with supporting elements connected to a frame and located in the ... | 06/27/1995 |
| 4782540 | Sleeper sofa mattress A sofa bed mattress is disclosed. The mattress may be extended to provide a sleeping surface, and may be folded about transverse flexure lines for storage within a sofa or other configuration. The sofa bed mattress includes an inner spring unit and an ove... | 11/08/1988 |
| 4662011 | Spring mattress The invention relates to a spring mattress of which the body is formed by spaced apart rows of springs connected by elastically deformable members. The latter enable the body to bend along transverse lines of break located between the rows of springs, wit... | 05/05/1987 |
| 4654905 | Body support for bed or seat A body support such as a mattress, box spring or the like that is foldable between a use position wherein it extends in a generally horizontal plane and a storage position wherein one section overlies the other section. The body support includes a plurali... | 04/07/1987 |
| 4620336 | Body support for bed or seat A box spring is condensed along its depth dimension and then packaged in this depressed state for storage and/or transportation. At its point of use, the box spring is unpackaged and expanded along its depth dimension for use. Within the box spring are a ... | 11/04/1986 |
| 4489450 | Body support for bed or seat A body support for a bed or a seat having a plurality of resilient support members or springs that are movable between a retracted or collapsed, inoperative position and an extended, operative position. The springs are contained in a case of flexible shee... | 12/25/1984 |
