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:
Sep. 17, 1991
Filed:
May. 25, 1988
Toshiaki Hitosugi, Numazu, JP;
Izumi Onoda, Fuji, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A rotary compressor includes first and second compressor sections, and a motor for driving the compressor sections. The first and second compressor sections have first and second cylinders, respectively, and each cylinders has a suction port. First and second suction pipes are connected to the suction ports, and first and second change over valves are provided at the first and second pipes, respectively. The first cylinder has a release port for releasing a port of the gas being compressed in the first cylinder. A release pipe provided with a third changed over valve is connected to the release port. The operaations of the first to third valves are controlled by a control circuit so that the capacity of the compressor varies in the plurality of steps in accordance with the loads applied thereto.