Patent · US Active

Vibrating diaphragm of sound-producing apparatus and sound-producing apparatus

US12143791B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

GOERTEK INC. · CN

Inventors

Weifeng Peng · Suzhou, CN
Fengguang Ling · Shandong, CN
Chun Li · Shandong, CN
Chunfa Liu · Weifang, CN

Key dates

Filing date	Dec 25, 2019
Grant date	Nov 12, 2024
Priority date	—
Expiry date	Dec 25, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2307/029
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Provided is a vibrating diaphragm of a sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made from polysulfide rubber; the polysulfide rubber is any one of type A polysulfide rubber, type FA polysulfide rubber and type ST polysulfide rubber, and a molecular weight of the polysulfide rubber is 1000-500000.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.