Control device for the speed control of pneumatic and/or hydraulic working pistons
CA 1065229 A · Owner: Transform Verstarkungsmaschinen Ag · Inventors: Dits, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
She present invention relates to a control device for the speed control of pneumatic or hydraulic power pistons and machine elements driven by such power pistons wherein, the control of the power piston speed is effected over at least part of the path of movement of said machine element by fluid pressure, said control device comprising a first hydraulic or pneumatic circuit containing a transducer coupled to the machine element or power piston so as to convert its motion into flow of fluid in said first circuit a second hydraulic, or pneumatic circuit containing a throttling arrangement adapted to throttle fluid flowing in a third hydraulic or pneumatic circuit, said fluid in said third …
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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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.