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.

Date of Patent:
Mar. 17, 2015

Filed:

Sep. 30, 2010
Applicants:

Norio Matsumoto, Osaka, JP;

Hiromichi Ueno, Osaka, JP;

Shigeharu Shikano, Osaka, JP;

Inventors:

Norio Matsumoto, Osaka, JP;

Hiromichi Ueno, Osaka, JP;

Shigeharu Shikano, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 17/00 (2006.01); F04B 49/00 (2006.01); F04B 39/00 (2006.01); F04B 23/00 (2006.01); F04B 7/00 (2006.01); F04C 18/52 (2006.01); F04C 18/08 (2006.01); F04C 28/26 (2006.01); F04C 28/28 (2006.01); F04C 29/04 (2006.01);
U.S. Cl.
CPC ...
F04C 18/52 (2013.01); F04C 18/086 (2013.01); F04C 28/26 (2013.01); F04C 28/28 (2013.01); F04C 29/04 (2013.01); F04C 2270/86 (2013.01);
Abstract

A screw compressor includes a casing and a compression mechanism accommodated in the casing. The compression mechanism has a screw rotor, a gate rotor and a communication mechanism. The gate rotor has a flat plate shape. A rotational axis of gate rotor is orthogonal to a rotational axis of the screw rotor. The communication mechanism is arranged to communicate a high pressure space and a low pressure space in the casing.


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