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:
Dec. 29, 1992
Filed:
Sep. 27, 1991
Applicant:
Inventor:
Richard G Henry, Mayfield Heights, OH (US);
Assignee:
Advanced Research Technologies, Park Ridge, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210765 ; 210749 ; 210805 ; 62292 ; 62303 ; 134 2211 ; 134 2219 ; 252 67 ;
Abstract
A solvent selected from the terpene hydrocarbon group and terpene alcohol group as a cleaning agent can provide effective cleaning of heating, ventilating and air conditioning systems which use hydrofluorocarbon or hydrochlorofluorocarbon or Freon refrigerants by using a solvent as described. Flushing through the refrigerant system condenser coils and evaporation coils removes any trace of excessive compressor lubricant which will be carried out with the solvent. The flushed materials carried out are biodegradable, thus are desirable from an environmental standpoint.