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:
Jul. 18, 1978
Filed:
Apr. 28, 1977
Applicant:
Inventor:
James Ranck Harnish, York, PA (US);
Assignee:
Borg-Warner Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13753311 ; 13753319 ;
Abstract
An improvement in ball-type check valves of the type used in heat pump systems. The valve is designed so that the pressure differential across the ball is significantly higher than in prior art devices. This assures that the ball is held away from the seat in the full flow mode, even when the valve is installed in a vertical position.