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:
Oct. 27, 1992
Filed:
Feb. 19, 1991
Applicant:
Inventors:
Norihide Saho, Ibaraki, JP;
Takeo Nemoto, Ibaraki, JP;
Shintaro Sado, Shimizu, JP;
Sachihiro Yoshimatsu, Kudamatsu, JP;
Tadashi Takada, Kudamatsu, JP;
Susumu Harada, Kudamatsu, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55338 ; 55350 ; 55437 ;
Abstract
A compressor unit in which the oil separated by a plurality of oil separators to a gas suction side pipe of the previous stage oil separator which contains gas whose oil concentration is higher than that of the gas from which oil has been separated, with the separated oil being returned to a compressor. The plurality of separators enables a simplification of the arrangement of the oil returning pipe, a prevention in a reduction in the discharge flow rate of the compressor, and reduction in space required for the separators.