Apparatus for uncoupling the threaded connection of a pump impeller
CA 1267005 C · Owner: Charest, Joseph Roland Jean-Paul Laurent · Inventors: Charest, Joseph Roland Jean-Paul Laurent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, An apparatus for uncoupling a threaded joint between a pump or turbine shaft and an impeller using the power of a hydraulic cylinder is disclosed. The apparatus has a housing with a V-shaped upper surface for supporting the end of the pump adjacent the impeller, a vertical support for supporting the opposite end of the pump which is adjustable in height and distance from the housing and a, hydraulic cylinder which is pivotally mounted on the side of the housing remote from the support. The rod of the hydraulic cylinder has attached to it a chain and hook for attachment to the impeller blade.
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
- Granted March 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2007.
- 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.