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:
Oct. 20, 1987
Filed:
Jun. 11, 1986
Guido Biagini, Cherry Valley, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
An on-board refrigerant charging system for a vapor cycle environmental control system in an aircraft or the like. A pair of accumulation chambers are provided for holding two different refrigerant components, each chamber including an outlet. A selectively operable valve is operatively associated with each chamber outlet. An inlet is provided to the vapor cycle environmental control system. A unitary dual-vaned pump is in fluid communication with the valves and the inlet to the environmental control system. A control senses refrigerant loss and the component mixture in the control system, and actuates the pumps to replace the refrigerant loss and operates the valves according to the desired component mixture charge.