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:
Aug. 13, 1985
Filed:
Apr. 30, 1984
Applicant:
Inventors:
Robert C Wedemeyer, San Francisco, CA (US);
Robert H Giebeler, Jr, Cupertino, CA (US);
Assignee:
Beckman Instruments, Inc., Fullerton, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210168 ; 55185 ; 417312 ;
Abstract
An apparatus for removing liquid contaminants from the oil sump of a vacuum pump. A liquid separator mounted on the housing of the pump connects the interior of the pump housing to the atmosphere through a liquid trap. An inlet passage through the separator connects a source of purging air to the interior of the pump housing, causing the air therein to flow through the liquid trap to the atmosphere. Because outflowing purged air is cooled by inflowing purging air, oil is selectively retained within the pump housing.