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. 30, 1994
Filed:
Jul. 30, 1993
Applicant:
Inventors:
Francis A Friedmann, South St. Paul, MN (US);
Wayne M Wagner, Apple Valley, MN (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210232 ; 210440 ; 210450 ; 210452 ; 210453 ; 210D / ;
Abstract
A spin-on fluid filter cartridge with a replaceable filter element is provided, comprising a housing, an internally threaded annular collar, a replaceable filter element, and an externally threaded mounting head assembly. The annular collar is secured inside the housing at its open upper end. A sealing ring in an annular channel adjacent the external threads of the mounting head seals the cartridge when the mounting head assembly is threaded into the annular collar.