Adjusting press platen clearance
CA 2034758 A1 · Owner: Ferguson, Andrew · Inventors: Ferguson, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a press having a lower stationary platen an upper movable, platen, a hydraulic ram that travels with the upper platen light-duty cylindersthat position the upper platen and a gate mechanism that closes above the ram to permit the ram to drive the upper platen during compression phases of operation, method and apparatus for adjusting the clearance between the upper and lower platens. A member of cylindrical spacers can be distributed as, desired, between an upper end of the ram and a spacer retaining mechanism located above the gate mechanism. The spacers are shaped to vertically interlock to form a stable stack atop the ram. The retaining mechanism extends downwardly from an upper …
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 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 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.