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. 19, 1982
Filed:
Apr. 13, 1981
Applicant:
Inventors:
Aldo Allori, Brookfield, IL (US);
John A Wilger, Chicago, IL (US);
Thomas F Reiff, Bridgeview, IL (US);
Assignee:
International Harvester Co., Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01P / ;
U.S. Cl.
CPC ...
210136 ; 210167 ; 137535 ;
Abstract
A check valve assembly regulating the fluid flow between the fluid reservoir and filter cartridge chamber is actuated by a valve actuating member movable through and controllable exteriorly of a filter system housing without compromising the housing leak integrity. The actuating member may perform another function of a drain plug for the filter chamber, so that upon removal of the member the check valve assembly will be closed and the chamber fluid drained through a drain plug opening without loss of the reservoir fluid.