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. 12, 1991
Filed:
Sep. 04, 1990
Kenneth W Manz, Paulding, OH (US);
Kent-Moore Corporation, Warren, MI (US);
Abstract
A refrigerant handling system in accordance with the present invention includes a closed liquid refrigerant storage container and a pump for feeding refrigerant in liquid phase to the container so that any air carried by the circulating refrigerant is captured in the container over the refrigerant. A differential pressure gauge has a first input that receives a fluid pressure signal which varies as a function of saturation pressure of refrigerant in liquid phase fed to the container, and a second input that receives an associated fluid pressure signal as a function of air pressure within the closed container volume. An indicator dial on the gauge displays pressure differential between the refrigerant saturation pressure and the container vapor pressure at the first and second gauge inputs for observation by an operator. A valve is coupled to the container for venting air from the container when such pressure differential exceeds a preselected threshold.