Screw-on pressure medium-actuated working cylinder with closure components for coupling the cylinder tube
CA 2245764 C · Owner: Buter, Josef · Inventors: Buter, Josef
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 screwable pressure medium actuated operating cylinder ha-, ving closure elements for coupling the cylinder tube. It is the object of the invention to develop a screwable pressure medium actuated opera-, ting cylinder, which operates with secure sealing performance in the high pressure ran-, ge, even with an aggressive atmosphere which can be produced economically and which, using mainly non-machining manufacturing technology is simple to , manufactu-, re, and has advantages resulting from these. In accordance with the invention the problems are solved in that the sealing is achieved, by pressing together of conformal elastic guide closure element sealing …
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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 January 4, 1997 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2019.
- 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.