Electronic to pneumatic actuator or transducer
CA 1070578 A · Owner: Falconbridge Nickel Mines Limited · Inventors: Gregg, Lauri C.; Lee, Stuart W.; Prediger, Ronald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a electronic to pneumatic actuator or transducer useful in converting a given electrical signal into a proportional pressure signal. A d.c. stepper motor is mounted on a base plate which itself has an air inlet port and a reciprocabable restrictor for regulating the flow of air through the port. Linkage means interconnects the restrictor to the stepper motor so that. the restrictor may be linearly displaced from a given position in a given amount directly proportional to the degree of rotation of the shaft of the stepper motor from a given position. The actuator may be used with the nozzle air supply of any air-loaded self-contained pressure regulator such as a …
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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 January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
- 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.