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:
Mar. 23, 1976
Filed:
Mar. 21, 1975
Applicant:
Inventors:
Arthur Francis Sullivan, Redmond, WA (US);
Frank Howard Brockett, III, Bellevue, WA (US);
Lewis John Harthan, III, Redmond, WA (US);
Assignee:
The International Nickel Company, Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137430 ; 137546 ; 37 59 ; 1374939 ;
Abstract
Dual function valve for controlling flow of liquids or mixtures of liquids and solids has a movable seat for relief of excessive negative pressure and a buoyant gate for emergency discharge under excessive loads of solids.