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:
Oct. 15, 1991
Filed:
Oct. 30, 1989
Applicant:
Inventor:
Nobuyuki Nakajima, Konan, JP;
Assignee:
Diesel Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417295 ; 417310 ;
Abstract
A variable capacity vane compressor has a control element rotatable in response to the difference between suction pressure and control pressure for varying the compression starting timing and hence the capacity. A communication passage extends between the suction chamber and a high pressure chamber in which the control pressure is created. A spool valve opens and closes the communicating passage. An electromagnetic actuator generates an electromagnetic force to cause the spool valve to open the communication passage when energized. A control unit is arranged outside of the compressor and supplies the actuator with an external control signal for energizing the actuator.