Device for manipulating submerged-operating units
CA 2190919 C · Owner: Itt Flygt Ab · Inventors: Liedtke, Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for manipulating submerged-operating units such as submersible motor-driven pumps submersible motor- driven stirrers and the like has a hoist, by means of which the unit can be brought into a submerged working position and a surfaced maintenance position wherein the unit is provided with a lifting strap of a coupling unit whose coupling element, which can be brought into and out of engagement with the lifting strap is provided on a pulling element of the hoist. In order to be able to design the device for manipulating submerged-operating units mechanically more simply and to use it also without a guide device it is provided that the coupling element is formed from a first …
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 21, 1996 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2018.
- 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.