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.:

US 3953662 B1

Date of Patent:

Apr. 27, 1976

Filed:

Dec. 30, 1974

Sealed container housing a mechanical filter

Applicant:

Inventors:

Toshio Nagashima, Tokyo, JA;

Ichiro Imaguchi, Tokyo, JA;

Shigeo Igarashi, Tokyo, JA;

Assignee:

Kokusai Electric Co., Ltd., Tokyo, JA;

Attorney:

Primary Examiner:

Darrell L Clay

Int. Cl.

CPC ...

H05K / ;

U.S. Cl.

CPC ...

174 1705 ; 174 / ; 310-82 ; 333 71 ;

Abstract

A container for a mechanical filter is provided in which the internal pressure is reduced to prevent propagation in the air of sound waves to thereby prevent deterioration of the filter characteristics. A recess with an aperture therethrough is formed in one of the walls of a metal casing which constitutes the container. Further, an adhesive tape-like member is disposed on the surface of the recess in such a manner as to cover the aperture. After the casing has been evacuated through the aperture, hermetic sealing means is provided on the adhesive tape-like member within the recess.

Find Patent Forward Citations

Nagashima, Toshio. (1976). Sealed container housing a mechanical filter (U.S. Patent No. 3953662). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3953662

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile