A seal structure for sealing the inlet/exit passageway of an elongated object
CA 2493233 A1 · Owner: Jrt Pipe Machinery Ltd. · Inventors: Lehtinen, Reijo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a seal structure for sealing the inlet/exit gate passageway of an elongated object (1) from a process cavity (A B) or into , such a cavity. The seal structure comprises sheet-metal structures which , essentially delineate the passageway and are removably mounted on the frame structure (3) of said process cavity, and a sweeping seal element (13) enclosing the passageway. The sheet~-metal element structures comprise at least two sheet-metal elements (14, 15 15x) that have a shape taperingly , departing from the frame structure (3) of the process cavity so as to be inclined in the nominal travel direction of the object (1) and are kept compressed mutually against …
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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 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2025.
- 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.