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:
May. 06, 2003
Filed:
Dec. 21, 2000
Filterwerk Mann & Hummel GmbH, Ludwigsburg, GB;
Abstract
A liquid filter, especially including an oil filter cartridge ( ) which is contained in a pot-shaped or cylindrical housing ( ) with threaded cover ( ), into which a cooler ( ) is preferably installed. An outlet opening ( ) is contained in the oil cooler ( ) which facilitates complete emptying of the cooler when the filter is changed. In this way, a complete replacement of the oil can be performed, so that the replaced oil is not contaminated from the outset by residues of the old oil. Thus, service intervals can be lengthened. To prevent a short circuit of the outlet opening ( ) during operation, the opening is closed by a valve stem ( ) coupled to the threaded cover ( ) and opened by unscrewing the cover.