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:
Nov. 06, 1990
Filed:
May. 12, 1989
Applicant:
Inventor:
Masafumi Minami, Sakai, JP;
Assignee:
MIC Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; E03B / ;
U.S. Cl.
CPC ...
137 60 ; 137 62 ; 137338 ; 236 / ; 237 80 ;
Abstract
An anti-freezing device for use in water supply conduits, which includes a driving chamber for imparting a drive to a main valve which is moved by the volumetric expansion due to the freezing of water therein so that the main valve is separated from a valve seat thereby to discharge water in the conduit outside therethrough. The flowing movement of water in the conduit prevents it from freezing.