Filter element comprising a seal arrangement and method for making the same
CA 2872093 C · Owner: Donaldson Company, Inc. · Inventors: Mork, Donald Raymond; Schrage, Kevin J.; Murphy, Troy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter element arrangement is provided which includes a media pack(2) comprising Z-filter media a preform(35) and an overmold(48,51,54) sealing a portion of the interface between the preform and the media pack and also forming an air cleaner seal for the filter element. The overmold preferably comprises molded foamed, polyurethane. A variety of media pack shapes can be used.A method of forming the filter element includes positioning the media pack in a mold together with the preform and allowing uncured foaming urethane to rise and cure to cover an interface between the media pack and the preform. An air cleaner comprising the filter element is also provided.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 21, 2004 and granted May 7, 2019. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.