Digital control device for an inverse rectifier
CA 1205517 A · Owner: Danfoss A/S · Inventors: Kuckelhahn, Kjeld
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a digital control device for an inverse rectifier, particularly for driving an A.C. motor operable at a variable frequency, comprising a pulse generator producing timing pulses at a multiple of the inverse rectifier frequency a location counter controlled, by the timing pulses a control store having at least two storage zones occupied by different controlling tables of which the data characterise the periodically changing signal pattern for the ignition and extinction signals of the controlled switching elements of the inverse rectifier and a table selecting apparatus which, depending on setting and operating parameters, delivers a preparatory selecting signal for …
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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 June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
- 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.