Electrical control circuit for controlling a d.c. solenoid
CA 1107814 A · Owner: Almo Manifold And Tool Company · Inventors: Six, Rudolph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A D.C. SOLENOID ABSTRACT OF THE DISCLOSURE, Improvement in an electrical control circuit for controlling a D.C. solenoid having a plunger and a manual control potentiometer a feedback potentiometer and a comparator for comparing the signal voltages from the two potentiometers so that the movement of the plunger of the solenoid is proportional to the movement of the wiper of the manual potentiometer, the feedback potentiometer being controlled by the movement of the plunger of the solenoid the, improvement comprising an arrangement for feeding the output signal from the feedback potentiometer to the comparator a digital computer, control circuit capable of receiving binary digital input …
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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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- 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.