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. 11, 2002
Filed:
Sep. 19, 2000
Kent J. Kallsen, Oregon, WI (US);
Nels A. Nordstrom, McFarland, WI (US);
Mark V. Holzmann, Stoughton, WI (US);
Jeffrey S. Morgan, Stoughton, WI (US);
Jeffrey S. Rech, Verona, WI (US);
Thomas M. Anderson-Brown, Madison, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
An air filter housing ( ) includes twist and lock structure ( ) having a first position (FIGS. ) permitting axial movement ( ) of a cover ( ) and base ( ) relative to each other, and being rotatable in a first rotational direction ( ) from the first position to a second position (FIGS. ), and in the second position preventing axial movement of the base and cover relative to each other, and being rotatable in a second opposite rotational direction ( ) from the second position to the first position. Anti-rotation lock structure ( ) provides a rotational retention force holding the twist and lock structure in the second position. The anti-rotation lock structure includes an arm ( ) flexibly bendable about a bend line extending parallel to the axis ( ) of the housing.