Cushion body and method of forming same

Details Cushion body and method of forming same Cushion body and method of forming same

1991-05-10

1993-08-10

Trettel, Michael F.

Beds

Bedclothing

And means to facilitate changing thereof

5475, 29745226, A47C 2720

Patent

active

052337111

ABSTRACT:
A cushion body including a continuous coil-spring assembly which comprises coil portions and linear connection portions, and a method for forming such cushion body. The continuous coil-spring assembly is pressingly inserted into a jig, and both jig and coil-spring assembly are subject to a low-temperature annealing treatment. Thus-treated coil-spring is then foamed with a urethane base material in a mold, so as to produce such sort of cushion body.

REFERENCES:
patent: 2994890 (1961-08-01), Wagner
patent: 3069701 (1962-12-01), McInerney
patent: 3099844 (1963-08-01), Bolesky
patent: 3454054 (1969-07-01), Docker
patent: 3480703 (1969-11-01), Morita et al.
patent: 3681798 (1972-08-01), Docker
patent: 4958394 (1990-09-01), Urai et al.

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