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. 15, 2013
Filed:
Mar. 18, 2011
Applicants:
Hyun-wook Kim, Seoul, KR;
Yong-wook Kim, Hwaseong-si, KR;
Tea-jin Park, Hwaseong-si, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04F 5/20 (2006.01); F04F 5/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum pump ejector may include ejector body and a nozzle. The ejector body may have a passageway through which fluids may flow. The passageway may have an orifice. The nozzle may inject a purging gas to the orifice. The ejector may decrease a pressure between the vacuum pump and the scrubber, so that the vacuum pump may have improved efficiency. Thus, the vacuum pump may be effectively operated.