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:
Jul. 22, 1997
Filed:
Oct. 31, 1996
Applicant:
Inventors:
Yasuo Matsushita, Mie-ken, JP;
Tatsuya Sumida, Mie-ken, JP;
Assignee:
Sumitomo Wiring Systems, Ltd., Yokkaichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
174 / ; 174 / ; 174 50 ;
Abstract
This invention aims to provide a waterproof casing which can keep its waterproof function under a great change of temperature. In the waterproof casing, a lid (20) which covers an opening in a body (10) is provided with a pipe (24) which intercommunicates an interior and an exterior of the casing. A porous waterproof filter (25) closes a port (24a) in the pipe (24). Air in the body (10) is expanded and contracted under changes in temperature. However, only air can pass through the filter (25) into and out of the body (10) with water being precluded, thereby waterproofing the interior of the casing.