Thermally welded spring pockets

Details Thermally welded spring pockets Thermally welded spring pockets

1978-10-02

1980-11-25

Nunberg, Casmir A.

Beds

Bedclothing

And means to facilitate changing thereof

5246, 5475, A47C 2704

Patent

active

042349834

ABSTRACT:
Individually pocketed upholstery springs for assembly into so-called Marshall construction, in which the pockets containing the individual springs are formed between the overlaid plies of a two-ply strip of material by lines of separate individual welds which connect the plies together.

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patent: 3869739 (1975-03-01), Klein
patent: 3874963 (1975-01-01), Borger
patent: 3912576 (1975-10-01), Braun

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