Torque transmitting device
CA 2092584 A1 · Owner: Plica Werkzeugfabrik Ag · Inventors: Runge, Erich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device provided on machine tools for transmitting torque onto tools, comprising at least two diametrically opposite rotary driving grooves openly issuing at the end of the tool shank and rotary drivers engaging in these and at least one radially movable locking member of the tool seat for engagement of a locking groove in the tool shank closed at both ends in the axial direction, wherein the rotary drivers have a cross section which is tapered towards the rotary axis of the seat to have a stepped shape and respectively, have at least two rotary driving surfaces in each sense of rotation which are mutually offset to have a stepped shape for reducing susceptibility to wear. A tool for …
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 March 26, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2015.
- 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.