Energy recovery system for press
CA 1280669 C · Owner: Malashenko, Leon · Inventors: Ballantyne, Ronald; Malashenko, Leon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTION: ENERGY RECOVERY SYSTEM FOR PRESS INVENTORS: LEON MALASHENKO and RONALD BALLANTYNE ABSTRACT OF THE DISCLOSURE, A press having a hydraulic mechanism for repeatedly raising and lowering a press platen and incorporating an energy recovery system is described. A hydraulic cylinder which serves to raise the platen has a vertical chamber a piston, which divides the chamber into upper and lower compartments and a piston rod, which extends upwardly from the upper surface of the piston centrally through the, upper compartment to the platen. The pressure-effective area of the upper surface of the piston is about one-half that of the lower surface of the piston owing to the comparatively …
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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
- Granted February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
- 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.