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:
Oct. 26, 1993
Filed:
Oct. 24, 1991
Applicant:
Inventors:
Assignees:
Matsushita Electric Works, Ltd., Osaka, JP;
Nishiwaki Laboratory, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
381 71 ; 381 94 ;
Abstract
An acoustic conductance is formed with oscillatory planes parallel to a duct and disposed on an identical circumference of the duct along a plane intersecting at right angles the duct so that the total area of the oscillatory planes will be substantially more than twice as large as a sectional area of the duct. The acoustic conductance is thereby made less affective on a fluid and provides a pertinent disposition of the acoustic conductance.
Quick Actions:
Takeyama, Hiroaki. (1993). Acoustic conductance and silencer utilizing same (U.S. Patent No. 5257316). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5257316
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile