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:
Jun. 02, 2009
Filed:
Mar. 21, 2008
Michael J. Kurth, Howards Grove, WI (US);
Paul W. Eserkaln, Sheboygan, WI (US);
Kurt R. Kaiser, Cleveland, WI (US);
Terry P. Zerger, Howards Grove, WI (US);
Michael J. Kurth, Howards Grove, WI (US);
Paul W. Eserkaln, Sheboygan, WI (US);
Kurt R. Kaiser, Cleveland, WI (US);
Terry P. Zerger, Howards Grove, WI (US);
Pentair Filtration, Inc., Sheboygan, WI (US);
Abstract
An assembly method and related subassembly for a water filter element in the housing of a replaceable filter cartridge provides for filter element insertion into the open bottom end of the housing and subsequent attachment of a retaining ring to the upper end of the element such that the element is secured against vertical drop-out until the bottom end of the cartridge can be enclosed with an end cap. The method and subassembly are particularly well adapted to cartridges in which the lower end cap is attached by spin welding. The enclosing end cap may also be provided with end rings to enhance the user's grip in cartridge installation and removal. The end rings may also be color coded for each of cartridge identification and matching to the filter head.