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:
Jul. 20, 1976
Filed:
Jan. 15, 1975
Applicant:
Inventor:
Edward A Codo, Joliet, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; F16K / ;
U.S. Cl.
CPC ...
210237 ; 1374542 ; 210431 ;
Abstract
A system for filtering hydraulic fluid wherein a high flow rate of uncontaminated fluid is required. A filling facility is provided for initial filling or for the addition of make-up fluid to the system which facility assures that such added fluid must pass through a filtration unit prior to integration with fluid already in the system. A by-pass valve is provided to provide pressure relief in the event that the filtration unit becomes clogged during use. The valve, along with an accompanying coarse filtration unit, are readily manually removable from the system for cleaning or repair.