Device for holding in position the rod of a pressure cylinder
CA 2270579 A1 · Owner: Andre, Jean-Luc · Inventors: Andre, Jean-Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The holding device consists of an isolating hydraulic assembly (2) mounted on the supply branches of a cylinder (1). This isolating assembly (2) comprises a lock chamber (9) having at each of its two openings a non-return valve of which one primary valve (11) in hydraulic connection with the outlet chamber (6) of the rod (7) of the cylinder (1) mounted in a direction passing through towards this chamber and a safety valve (13) mounted passing through in the same direction the closing of the latter being delayed with respect to that of the primary valve (11). This invention is useful for holding in position the rod of all cylinders in particular under load and is of interest for all …
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 November 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.