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US 5,916,664 AGranted
Multi-celled cushion and method of its manufacture
AssigneeRobert C. Bogart
InventorMarion Franklin Rudy
Life of this patent
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AssigneeRobert C. Bogart
InventorMarion Franklin Rudy
Estimating the term…
A method for inflating cushioning devices which comprise at least first and second distinct chambers having an interconnecting passage providing fluid communication between the chambers. The method comprises either: (1) limiting the volume of at least one of the chambers, filling the chambers with a fluid at a single inflation pressure from a single inflation point and sealing the interconnecting passage, or (2) filling the chambers with a fluid at a single inflation pressure from a single inflation point compressing at least one of the distinct chambers, and sealing the interconnecting passage. The method is particularly suited to manufacture of a footwear cushion comprised of a body of elastomeric material having a plurality of sealed non-communicating cells having a single inflation point. At least two cells sharing a single sealed inflation passage are at different pressures.
A cushioning device comprised of a body of elastomeric material having a group of fluid filled sealed non-communicating cells, said group of cells having only one inlet port to an external atmosphere, said group of cells having been filled with a fluid at a single pressure, wherein at least two of said cells are at different pressures in an at rest state, and wherein a passage extends between said at least two cells at different pressures, said passage having been sealed at a point between said two cells to maintain the different pressures.
A shock absorbing cushion comprised of a body of elastomeric material having (N) fluid filled, non-communicating cells, a passage extending between said cells, said passage being sealed at a point between said cells, said cells having a single inflation point, and at least two cells having different pressures, wherein fewer than (N-1) sealed passages connect said cells.
A cushioning device constructed by a process comprising the steps of:
A footwear cushion comprised of a body of elastomeric material having at least three fluid filled non-communicating cells,
Dependencies are inferred from the claim text.