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| Number | Title | Issue Date |
| 7181796 | Mattress structure with an improved lumbar zone A mattress spring structure (10) is provided with a strengthened central area (C) thereon to provide greater support for a user's body lumbar region when received thereon. The support is provided with a strengthening structure (30) having a continuous ... | 02/27/2007 |
| 7063309 | Mattress spring structure The invention concerns a mattress spring structure that includes multiple spring assemblies. Each spring assembly comprises an array of open-ended spring coils. The spring assemblies are arranged in superimposed relationship with the individual spring coils of the r... | 06/20/2006 |
| 6371458 | Spring mattress The invention relates to a spring mattress comprising a plurality of interconnected coil spring elements, whereby the mattress includes at least two layers extending in parallel with the plane on the mattress and each exhibiting different properties of re... | 04/16/2002 |
| 6272700 | Dual layer bedding or seating product A bedding or seating product comprising a base having a pair of end rails, a pair of side rails and a plurality of intermediate rails. A plurality of intermediate wooden slats are spaced above the intermediate rails of the base by a plurality of spacers w... | 08/14/2001 |
| 6101651 | Pillow core A novel pillow core is made of plastic springs. A plurality of springs are connected together by a plastic link frame to form an actual pillow shape. The pillow core made of the plastic springs has strong supporting capacity, good elasticity and ventilati... | 08/15/2000 |
| 5713088 | Innerspring construction with springs having free terminal convolutions An innerspring assembly, such as for use in a mattress, comprises a plurality of coil springs defining upper and lower terminal convolutions and body portions therebetween. Adjacent coil springs are attached together at the body portions thereof with the ... | 02/03/1998 |
| 5401007 | Wire spring assemblies made of nestably stackable half units Wire spring assemblies for use in furniture items such as mattresses and seat cushions are made of two half units. The half units include spring elements extending from a generally planar deck with the spring elements containing complementary connecting s... | 03/28/1995 |
| 4918773 | Posturized spring bedding product A spring interior comprising a plurality of longitudinally extending bands of springs disposed side by side and connected together by helical lacing wires in the top and bottom faces of the bands. Each band of springs comprises a single length of wire for... | 04/24/1990 |
