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:
Mar. 19, 2024
Filed:
Sep. 10, 2020
Applicant:
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Inventors:
Shota Tanimoto, Tokyo, JP;
Shigeyuki Yorikane, Tokyo, JP;
Tomohiro Komatsu, Tokyo, JP;
Takeshi Tsuchiya, Tokyo, JP;
Kotaro Chiba, Tokyo, JP;
Assignee:
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 18/16 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01);
U.S. Cl.
CPC ...
F04C 18/16 (2013.01); F04C 29/0007 (2013.01); F04C 29/02 (2013.01); F04C 2250/20 (2013.01);
Abstract
This screw compressor is provided with a screw rotor, a casing accommodating the screw rotor, and a liquid feed mechanism for feeding a liquid into an operating chamber enclosed by the casing, wherein the pitch of the screw rotor changes in the axial direction from a suction end surface toward a discharge end surface.