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. 19, 1991
Filed:
Oct. 11, 1990
Applicant:
Inventors:
Steven L Miller, Shelby, KY (US);
Ronald L Wathen, Jefferson, KY (US);
Raymond E Palazzo, Jr, Jefferson, KY (US);
Assignee:
Environmental Water Technology, Inc., Louisville, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137515 ; 1375195 ; 13753311 ;
Abstract
A check valve for a fluid conduit line including a spaced break in a fluid conducting line with a chamber defining sleeve connecting opposed ends of the broken fluid line, the chamber having a float fluid check valve disposed therein of a specific gravity lower that the specific gravity of the fluid in the line with opposed spaced ends of the broken line being contoured to remain open to the chamber when the float valve is urged thereagainst by line pressure.