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:
Jul. 14, 1987
Filed:
Sep. 05, 1985
Applicant:
Inventors:
Yuji Yoshida, Itami, JP;
Shigeo Suzuki, Hirakata, JP;
Kazuo Nakatani, Moriguchi, JP;
Yuji Mukai, Kadoma, JP;
Akira Nakazawa, Kusatsu, JP;
Takumi Imoto, Kusatsu, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
62114 ; 623246 ;
Abstract
A heat pump apparatus is provided with a multiple-constituent refrigerant mixture which includes a major constituent refrigerant which is above 50% by weight of total refrigerant enclosed in the refrigerating circuit provided with a variable frequency compressor, and a minor constituent refrigerant which has lower critical pressure than that of the major constituent refrigerant.