The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2019
Filed:
Dec. 28, 2017
Aac Technologies Pte. Ltd., Singapore, SG;
Peng Qin, Shenzhen, CN;
AAC TECHNOLOGIES PTE. LTD., Singapore, SG;
Abstract
A speaker box, includes a housing and a speaker unit accommodated in the housing. The speaker unit includes a diaphragm for forming a front sound cavity cooperatively with the housing. The box further includes a sound transmitting channel communicating the front sound cavity and outside, a front cavity of the speaker box formed by the front sound cavity and the sound transmitting channel, a through hole formed in the housing corresponding to the front cavity, and an elastic cover plate disposed on the housing and covering the through hole. A resonance frequency of the elastic cover plate is greater than a working frequency range of the speaker unit.