Control mechanism for a separately excited dc drive motor and method for control of a dc drive motor
CA 1285984 C · Owner: Heidelberger Druckmaschinen Aktiengesellschaft · Inventors: Rodi, Anton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In combination a control mechanism for a, separately excited DC drive motor and a device for, generating an exciter current to be supplied to a field winding of the motor, includes a measuring device for measuring operational values of the motor and a device, connected to the measuring device for adjusting the exciter current, in accordance with measurement results of the measured values, to a determined value at which a preselected operational characteristic exists and the, exciter current is kept constant at the determined value.
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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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- 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.