Tool holder with hydraulic coupling means
CA 2514722 C · Owner: Oilquick Ab · Inventors: Sonerud, Ake
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 tool holder for cranes. The tool holder comprises hydraulic cylinder means (16a, 16b) arranged to detachably be able to lock a tool to the tool holder. Furthermore, hydraulic coupling means (17a 17b) is , comprised arranged to be connected with hydraulic coupling means (20a 20b) on , the tool and hydraulic line means (24a 24b). The object of the invention is, among other things to reduce the number of requisite lines in the hydraulic line meansr. According to the invention the tool holder comprises furthermore valve means (9) provided with switching means (1Oa 1Ob) arranged to connect , the hydraulic line means (24a 24b) either to the hydraulic cylinder means …
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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 29, 2004 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2026.
- 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.