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. 07, 1989
Filed:
Oct. 07, 1988
Applicant:
Inventor:
Robert B Stevens, Honolulu, HI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
137218 ; 137107 ; 137800 ; 251 90 ; 251 93 ;
Abstract
A water access preventer for testable water backflow prevention assemblies wherein a means is provided to quickly, inconspicuously, and inexpensively prevent unauthorized access to potable water travelling within these assemblies throughout the differential pressure gradient of these assemblies, comprising, in part: a means for locking the valves which provide access to the potable water, and a means for preventing the shut-off of linepressure throughout the differential pressure gradient of the device.