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, 1992
Filed:
Mar. 27, 1991
Nobuyuki Nakajima, Konan, JP;
Zexel Corporation, Tokyo, JP;
Abstract
A variable capacity vane compressor has a control element for determining timing of start of compression of a refrigerant gas. In a high-pressure chamber there prevails control pressure which acts on the control element for urging same toward a maximum capacity position thereof. The control pressure is created by introducing the refrigerant gas from a discharging space within which discharge pressure prevails into the high-pressure chamber via a high pressure-introducing passageway. The high pressure-introducing passageway has a restriction hole for restricting flow of the refrigerant gas. An electromagnetic value opens and closes the restriction hole in response to an external control signal. The refrigerant gas is allowed to constantly leak from the high-pressure chamber into a suction chamber via a leak passage, the leak passage having a cross-sectional area smaller than that of the restriction hole.