Cam ram
CA 2195352 C · Owner: Hmc-Brauer Limited · Inventors: Fraser, Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clamp for clamping a workpiece comprises a base member (101), a clamping member (103) mounted on the base member for linear movement relative thereto and a drive member (102) mounted on the base member for rotary movement relative thereto. First and second cam elements (114 138), comprising a face cam are provided on the drive member and the base member, at least one of said cam elements including at least two portions of different pitch. The arrangement is such that rotation of the drive member (102) relative to the base member (101) causes linear movement of the clamping member (103) relative to the base member.
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 January 17, 1997 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2019.
- 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.