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:
Feb. 09, 1988
Filed:
Oct. 07, 1985
Applicant:
Inventor:
Richard E Schaupp, Modesto, CA (US);
Assignee:
Parker Hannifin Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210163 ; 210472 ;
Abstract
A drain assembly uses a valve body with a drain passage and a vent passage in order to provide self-venting drainage of a collection bowl mounted to a filter unit. The valve body cooperates with a seal such that the drain passage is opened before the vent passage, thereby insuring proper operation of the passages. Additionally, the valve body draws air into a cavity within the seal, thereby inherently clearing an upper vent port of fluid prior to opening of a vent port disposed at the upper end of the vent passage.