Title:
PRODUCTION OF SPEAKER DIAPHRAGM
Document Type and Number:
Japanese Patent JPS5379524
Kind Code:
A
Abstract:
PURPOSE: To increase internal loss and suppress the production of non-symmetrical vibrations by heating and pressing a thin plate, which comprises pressure-compacting chop form chabon fibers with thermosetting plastics, in a pair of male and female molds thereby molding said plate.
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Inventors:
HANEDA TOSHIO
Application Number:
JP15487676A
Publication Date:
July 14, 1978
Filing Date:
December 24, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H04R7/02; (IPC1-7): H04R31/00