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:
Jan. 26, 1982
Filed:
Dec. 26, 1978
Applicant:
Inventor:
Erich Pohlmann, Kulmbach, DE;
Assignee:
ASK August Schneider GmbH & Co. KG, Kulmbach, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
237 / ; 165 62 ; 165 64 ; 623242 ; 622383 ;
Abstract
Bivalent heating system having a directly fired heat pump with an absorber and a burner-heated generator disposed in a refrigerant circulation loop, the refrigerant loop being coupled through heat exchanging means to a heating medium loop for space heating and including control means activatable when a predetermined ambient temperature is reached for increasing fuel supply to the burner of the heat pump and for switching circulation in the refrigerant loop from heat pump operation to pure heat exchanger operation.