An improved pneumatic pressure to hydraulic pressure intensifier mechanism
CA 2187001 C · Owner: Engle, Thomas H. · Inventors: Engle, Thomas H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic/hydraulic pressure intensifier has an end cap secured to open end of housing. A first chamber in open end receives air pressure. A first fluid communication system formed in end cap communicates air pressure to first chamber. A wall member is disposed in such housing. A second chamber in communication with such first chamber contains hydraulic fluid and unpressurized air. A second end cap is secured to other end of housing. A third chamber in intensifier contains hydraulic fluid. A second fluid communication system formed in second end cap connects the third chamber to a fluid communication line. An aperture formed in wall of second chamber evacuates air from portion of first …
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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
- Filed October 2, 1996 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2018.
- 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.