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:
Apr. 17, 2001
Filed:
Jul. 21, 1999
Masakazu Murase, Kariya, JP;
Yoshinobu Ishigaki, Kariya, JP;
Kazuaki Iwama, Kariya, JP;
Takuya Okuno, Kariya, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
A variable displacement compressor includes a swash plate, which is rotatably supported on a drive shaft in a crank chamber. The crank chamber is connected to a discharge chamber through a pressurizing passage. An electromagnetic control valve is located in the pressurizing passage. When the control valve opens the pressurizing passage, pressure in the crank chamber increases and inclination of the swash plate decreases. When the control valve closes the pressurizing passage, the pressure in the crank chamber decreases and inclination of the swash plate increases. A fixed restrictor is located in the pressurizing passage. When the control valve suddenly opens the pressurizing passage, the fixed restrictor limits the flow rate of gas in the pressurizing passage so that the pressure in the crank chamber gradually increases. Accordingly, the inclination of the swash plate gradually decreases, thus reducing vibration and noise.