Reciprocating lift mechanism
CA 2099652 C · Owner: Utica Enterprises, Inc. · Inventors: Mason, Arthur C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention teaches method and apparatus for a single stroke kinematic system, having a required mid stroke dwell, which permits positioning of the mid strike dwell with respect to both space and time. A four bar linkage mechanism is disclosed having a bottom stroke and a top stroke toggle thereby kinematically providing the acceleration ramps into and out of the bottom stroke and top stroke dwells. A cycloidal drive mechanism is provided to drive the four bar linkage and providing time/phase shifting of the cycloidal drive's mid cycle dwell.
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 June 24, 1993 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 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.