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. 22, 2014
Filed:
May. 30, 2008
Kiminori Iwano, Yokohama, JP;
Yuji Komai, Tokyo, JP;
Susumu Sakamoto, Kawasaki, JP;
Aya Mizukoshi, Yokohama, JP;
Kiminori Iwano, Yokohama, JP;
Yuji Komai, Tokyo, JP;
Susumu Sakamoto, Kawasaki, JP;
Aya Mizukoshi, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electromagnetic valve, which is provided between an intake port of a compressor body and a pneumatic line at an intermediate position of an intake pipe, is opened/closed by a control unit. Communication between the intake port of the compressor body and the pneumatic line is permitted when the valve is open, and is blocked when the valve is closed. In a start-up control of the compressor body, the electromagnetic valve is opened, permitting communication of the pneumatic line in the plant with the intake port of the compressor body for power supply to an electric motor to drive an orbiting scroll. Rattling of the orbiting scroll by an amount equal to the axial gap (play) is suppressed before starting a compression operation.