End stop for stepper of step-type transformer
CA 2038717 C · Owner: Kloth, Gunter · Inventors: Dohnal, Dieter; Kloth, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stepper drive for a step-type transformer has an upper geneva wheel rotatable about a wheel axis a lower geneva wheel spaced, below the upper wheel and also rotatable about the axis and a driver, rotatable about a driver axis adjacent the wheels and having an upper abutment engageable with the upper wheel and a lower abutment engageable with the lower wheel and offset by about 180° relative to the driver axis from the upper abutment. A selector abutment is provided on the upper wheel offset from the axis thereof. A selector lever pivotal about a selector axis offset from the wheel axis is engageable with the selector abutment in end positions of the upper wheel. A blocking plate …
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 20, 1991 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2013.
- 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.