Balloon assembly

Details Balloon assembly Balloon assembly

1987-05-19

1989-04-25

Fuller, B. R.

Acoustics

Diaphragm and enclosure

181141, 181150, 181161, 181172, 181173, 381152, 381153, 381202, 381205, H04R 700, H05K 500

Patent

active

048239070

ABSTRACT:
A speaker system includes a thin plate type vibrating element mounted in, and brought into contact with, a balloon formed of a synthetic rubber or resin film. The balloon comprises a balloon member formed of a flexible film such as a vinyl chloride resin or synthetic rubber film and having therein a pocket, in which an inner film forming the pocket has an area somewhat larger than that surrounded with a laminating line on an outer film forming the pocket, whereby the inner film is brought in pressure contact or engagement with the outer film, when the balloon assembly is inflated.

REFERENCES:
patent: 1730532 (1929-10-01), Robbins
patent: 2755796 (1956-07-01), Boucke
patent: 3315662 (1967-04-01), Buffington
patent: 3812301 (1974-05-01), Lahti
patent: 4010821 (1977-03-01), Quillmann
patent: 4033337 (1977-07-01), Raczkowski

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