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US 6,672,548 B1Granted
Cushion
OwnerPaul M. Yatesinventor
Life of this patent
Estimating the term…
Abstract
A cushion includes a formed or stretchable sheet, or cover, and a core. The core includes individual and separate particulates and an oil for enabling lubricated movement of the particulates within the core in response to an outside force applied to the sheet. Particulates may include a combination of polymers and foam materials particularly open celled foam materials that may be partially filled with the oil upon forming of the cushion.
Claims7
A cushion comprising:
- a stretchable sheet;
- and
- a core for supporting said stretchable sheet in a selected contour, the core produced by:
- providing a mold having the selected contour;
- disposing said stretchable sheet over the mold;
- disposing a volume of a mixture comprising compressible open cell foam particles and a liquid into the mold onto an exposed side of said stretchable sheet;
- forcing the volume into the mold and said liquid into the open cell foam particles;
- and
- sealing a backing over a bottom of the cushion to trap the volume between the sheet and the backing.
6 more elements
Dependencies are inferred from the claim text.