Interface device for remote control
CA 1115358 A · Owner: General Electric Company · Inventors: Ferrigno, William L. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interface device for the remote control of pulse activated, mechanically held relays or master switches by control devices which have a continuous output, such as time clocks security, system devices, and thermostats. The presence of a continuous input signal is decoded by the electronic circuitry into a momentary output signal to be applied to the "on" side of a remote control relay. When the input signal is removed the device decodes, this lack of signal and produces a momentary signal to be applied to the "off" coil of the relay. Input terminals are provided with four types of input signals - 120 volts AC, 12 volts DC, a contact closure, and a contact opening. Three output terminals …
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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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 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.