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:
May. 03, 2016
Filed:
Jun. 20, 2012
Applicants:
Toshiaki Yabe, Shizuoka, JP;
Natsuki Kawabata, Shizuoka, JP;
Masakatsu Okaya, Shizuoka, JP;
Kohei Sakai, Shizuoka, JP;
Inventors:
Toshiaki Yabe, Shizuoka, JP;
Natsuki Kawabata, Shizuoka, JP;
Masakatsu Okaya, Shizuoka, JP;
Kohei Sakai, Shizuoka, JP;
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C 21/04 (2006.01); F01C 21/06 (2006.01); F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 15/00 (2006.01); F04C 27/02 (2006.01); F04C 29/04 (2006.01); F04C 18/16 (2006.01); F01C 21/00 (2006.01); F04C 29/02 (2006.01);
U.S. Cl.
CPC ...
F04C 18/16 (2013.01); F01C 21/007 (2013.01); F04C 29/02 (2013.01); F04C 29/04 (2013.01);
Abstract
An oil free compressor includes a cooling fan, a low-pressure stage air-cooled heat exchanger, a high-pressure stage air-cooled heat exchanger, and a lubricating oil air-cooled heat exchanger. The cooling fan is provided independently from each of the low-pressure stage air-cooled heat exchanger, the high-pressure stage air-cooled heat exchanger, and the lubricating oil air-cooled heat exchanger.