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:
May. 19, 1981
Filed:
Aug. 06, 1979
Applicant:
Inventors:
Carlton W Naab, Williamsville, NY (US);
Roman Jankowiak, Cheektowaga, NY (US);
Assignee:
Conax Corporation, Buffalo, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137 72 ; 137 76 ;
Abstract
A flood valve adapted to close an opening through a barrier wall separating a fluid from a space, the valve having a plastic body with a bore therethrough, a piston slidable in the bore, a heating element carried by the body and having a section extending across the bore to restrain the piston against movement out of the bore, and a spring urging the piston against the restraining section of the heating element, the piston normally sealing the bore and the heating element, when energized, burning through the plastic body material to release the piston for admission of fluid through the bore to the space.