Hydraulic puller
CA 2068245 A1 · Owner: Young, Arnold · Inventors: Young, Arnold
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device is described for freeing press fit parts from shafts. A hydraulically acting piston is provided in a main cylinder body, one end of which is provided with an inlet for hydraulic fluid under pressure and the other end of which is provided with an aperture through which said piston may extend under pressure from hydraulic fluid. At least two puller arms are arranged around the main cylinder body and extend forwardly thereof a distance sufficient to grip a said part on a shaft that is aligned with the piston that extends from the main body. At least two relatively smaller hydraulic cylinders extending radially outwardly from the main hydraulic cylinder and are in fluid, communication …
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 May 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2014.
- 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.