Hybrid hydrostatic spindle
CA 2317854 A1 · Owner: Moore Tool Company Incorporated · Inventors: Kashchenevsky, Leonid
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a spindle unit which is able two work both in a low speed powerful roughing regime and medium and high speed precision semi-finishing and finishing. The spindle unit includes a body a shaft, placed into the body, journal bearings between the body and the shaft, and at least one journal-thrust ball bearing assembly placed between the body and the shaft. A hydraulic or pneumatic cylinder is used to move the shaft in an axial direction. The spindle unit further has a pad placed on at least one side of the hydraulic or pneumatic cylinder. As a result of this construction the spindle, unit can work as a fully restricted spindle unit with and without additional …
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 September 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2022.
- 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.