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:
Jan. 02, 1979
Filed:
Apr. 29, 1977
Applicant:
Inventor:
Earl A Clark, Norfolk, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137172 ; 137192 ; 137433 ;
Abstract
A mechanical valve used to stop unwanted discharge of liquids less dense than water, principally oil, which may be present in waste water flows. The valve is closed by sinking of a float less dense than water but more dense than the liquid whose discharge is to be stopped. The float is surrounded by a housing. Variations in the location of holes in the housing determine the depth of liquid which is required before the valve will close. Simple glass or other containers may be converted to serve as grease traps by installing the valve which has its discharge outlet above the valve orifice.