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:
Jun. 27, 1989
Filed:
Apr. 04, 1988
Yasushi Watanabe, Kariya, JP;
Shinichi Suzuki, Kariya, JP;
Masahiro Kawaguchi, Kariya, JP;
Tatsuya Naki, Kariya, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Aichi, JP;
Abstract
A variable displacement vane compressor for an air conditioning system used in an automobile has a cylinder assembly having a bore in which a rotor (7) is received to form at least one crescent chamber (R1, R2) between the rotor (7) and the bore. The cooling capacity is adjusted in accordance with a cooling load of the air conditioning system by displacement of an annular plate member (21) for controlling the amount of refrigerant introduced into a crescent chamber (R1, R2). The annular plate member (7) is driven by a driving units (25, 25a, 26, 27, 28, S1, S2) in which a dynamic pressure balance between a first compartment (S1) to which a refrigerant gas under a discharging pressure is introduced, and of a second compartment (S2) to which an oil under a discharging pressure is introduced. A sealing means (35a, 36) for preventing the leakage of the refrigerant gas from the high pressure region including the first compartment (S1) to the low pressure region is provided between the annular plate member (21) and a front end wall member (4) and an pressurized oil is supplied to the sealing means (35a, 36) to enhance the sealing effect of the sealing means (35a, 36).