Idler roller bearing and seal
CA 2043322 C · Owner: Fmc Corporation · Inventors: Hines, William H.; Peach, Samuel O.; Hibbetts, Bryon T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seal and bearing assembly is provided to seal the end of a conveyor roller. The seal is made up of an outer lip seal of a pliable material, a contact seal, a metallic labyrinth element and an interlocking labyrinth pliable materlal seal inboard of the outer lip seal.
Read the whole patent
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 May 27, 1991 and granted June 18, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2013.
- 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.