Sealing mechanism for a compressor housing
CA 2074201 C · Owner: Kobayashi, Hideto · Inventors: Kobayashi, Hideto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sealing mechanism for a compressor housing is disclosed which seals mating surfaces of a cylindrical portion and a front end plate portion of the compressor housing. The sealing mechanism includes an annular groove formed at an inner end surface of an outer peripheral region of the front end plate portion. The annular groove faces an opening end surface of the cylindrical portion. An O-ring seal element of an elastic material is disposed within the annular groove. The front end plate portion is fixedly attached to the opening end surface of the cylindrical portion by a plurality of bolts so that the O-ring seal element of elastic material is compressedly disposed within the annular …
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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 July 20, 1992 and granted April 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2014.
- 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.