Diaphragm for producing sound

Details Diaphragm for producing sound Diaphragm for producing sound

1987-09-14

1988-09-13

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428246, 428251, 428252, 428259, B32B 512

Patent

active

047709189

ABSTRACT:
A diaphragm for producing sound includes a laminated structure having at least one layer of a first fabric and at least two layers of second fabrics. The first fabric is woven from filament yarns including at least partly chemical fiber yarns of a low elongation. Each of the second fabrics is woven from filament yarns made of a chemical fiber of a high elongation. The layer of the first fabric and the layers of the second fabrics are disposed in such a manner that warps of the first fabric and warps of the second fabric cross each other at an angle of 10.degree. to 80.degree., whereby an elongation of the diaphragm in a direction of the warps of the first fabric is generally equal to an elongation of the diaphragm in a direction inclined at an angle of 45.degree. relative to the direction of the warps of the first fabric.

REFERENCES:
patent: 1903960 (1933-04-01), Dreyfus
patent: 2477407 (1949-07-01), Grant
patent: 4282011 (1981-08-01), Terpay

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