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:
Sep. 13, 1994
Filed:
Feb. 01, 1993
Gordon L Mount, West Monroe, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
An external fluid circuit capable of being connected between service valves provided on a closed system containing a refrigerant. The external fluid circuit is provided with a testing tube and testing tube holder. A flow meter and flow regulator are connected in series in the external fluid circuit. The flow meter is provided with a transparent chamber containing a float indicator member to indicate when a desired rate of refrigerant flow through the circuit has been achieved. A three-way toggle valve is provided between the flow meter and testing tube holder allowing the refrigerant to be directed through the testing tube or through a bypass loop. A hand-held compressor downstream of the testing tube holder induces sufficient flow pressure difference where there is insufficient system pressure to cause proper flow through the external fluid circuit.