Switching control apparatus for vending machine alternating current device switching
CA 1254635 A · Owner: Mars, Inc. · Inventors: Shuren, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved switching control apparatus for switching a number of alternating current (AC) devices such as AC vend motor, uses a reduced number of AC power switching elements such as relays by dividing the AC devices into two groups and using one switching element to select which of the two groups is to be selected, and using an additional number of AC power switching elements each of which is connected to one of the AC devices in each of the two groups to select which one of the AC devices is to be activated. Preferably, a further AC power switching element is used to control the flow of power to the group determining AC power switching element so that switching transients can be …
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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 May 23, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 23, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.