Transportable chair pad

Details Transportable chair pad Transportable chair pad

1994-07-11

1995-07-04

Ahmad, Nasser

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

5470, 5471, 5472, 5481, 5653, 5654, 5925, 29745226, 29745241, 29745246, 29745248, 29745261, 297DIG1, 428 76, 428137, 428138, 428187, 428192, 4283193, 4283197, 428409, 4284231, 4284242, 4284244, 4284246, A47C 718, A47C 2705, A47C 2715

Patent

active

054298520

ABSTRACT:
A transportable chair pad and method of making the same comprises a top vinyl layer; a relatively thick polyurethane core layer; a bottom, non-clickable ester urethane foam layer; and a reinforcing vinyl layer fixedly attached to the inwardly facing surface of the bottom foam layer. The polyurethane layer is provided with a plurality of holes extending entirely therethrough. The chair pad is assembled with a sandwich type, vacuum and heat sealing machine with the heat seal seams being formed about the periphery of the polyurethane layer as well as within each hole formed through the polyurethane foam layer. The bottom vinyl layer further includes a plurality of holes to provide aeration.

REFERENCES:
patent: 3111689 (1963-11-01), Mulhauser
patent: 3298047 (1967-01-01), Fewerman
patent: 4292703 (1981-10-01), Goguen
patent: 4457032 (1984-07-01), Clarke
patent: 4627660 (1986-12-01), Kon
patent: 5015037 (1991-05-01), Giblin
A Glossary of Industry Urethane Terms, by S. Alan Stewart, The Martin Sweets Company, Inc., 1971.

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