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. 09, 1990
Filed:
May. 20, 1988
Applicant:
Inventors:
Tatsuhisa Taguchi, Katano, JP;
Yoshikazu Abe, Neyagawa, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417295 ; 417310 ;
Abstract
In a pressure control valve (28) of a variable capacity compressor, a pressure detecting part (48) which compares suction pressure of the compressor with atmospheric pressure, a valve (52) urged to close by a spring (53), a rod driven by the pressure detecting part and an electromagnetic coil (55) for attracting and opening the valve are provided, thereby to change capacity of the compressor continuously.