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:
Dec. 13, 2016
Filed:
Sep. 28, 2012
Applicant:
Satoshi Nakagawa, Tokyo, JP;
Inventor:
Satoshi Nakagawa, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 18/344 (2006.01); F04C 2/344 (2006.01); F01C 21/08 (2006.01); F01C 21/10 (2006.01); F04C 15/00 (2006.01); F04C 27/00 (2006.01); F04C 29/00 (2006.01);
U.S. Cl.
CPC ...
F04C 18/3441 (2013.01); F01C 21/0809 (2013.01); F01C 21/108 (2013.01); F04C 2/344 (2013.01); F04C 2/3441 (2013.01); F04C 15/0076 (2013.01); F04C 18/344 (2013.01); F04C 27/005 (2013.01); F04C 29/0078 (2013.01); F04C 2240/20 (2013.01); F04C 2240/60 (2013.01);
Abstract
A shaft is fitted in a shaft fitting concave part to provide a structure such that no shaft penetrates through a rotor, so that an inner space (shaft fitting concave part, and hollow parts) and an outer space (pump chamber) of the rotor are made independent. The inner space of the rotor is communicated with outside to be at a low pressure, and the outer space is at a high pressure due to gas compression, and an upper surface of the rotor slides on an inner wall surface of a rotor housing part with pressed against this inner wall surface by a pressure difference.