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:
Mar. 10, 1992
Filed:
Aug. 24, 1990
Nobuyuki Nakajima, Konan, JP;
Toshio Yamaguchi, Konan, JP;
Zexel Corporation, Tokyo, JP;
Abstract
A variable capacity vane compressor has a first oil sump formed in a bottom of a discharge pressure chamber arranged at one side of a cylinder close to one side block, and a second oil sump formed in a bottom of a suction chamber arranged at another side of the cylinder close to the other side block. An oil passageway communicates between the first oil sump and the second oil sump. A control element is arranged in the other side block for rotation about its own axis in opposite directions to thereby vary the compression starting timing. A pressure chamber acts to apply control pressure created from discharge pressure from the cylinder to the control element for causing rotation of the control element. A seal member is fitted on the control element such that part of the seal member is located in the pressure chamber. A high pressure-introducing passageway is formed in the other side block and communicates with the second oil sump. The discharge pressure from the cylinder is introduced into the pressure chamber through the discharge pressure chamber, the first oil sump, the second oil sump, and the high pressure-introducing passageway.