Stepping motor using extended drive pulses and method
CA 1074393 A · Owner: Teletype Corporation · Inventors: Von Braun, Leopold
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The present invention relates to a stepping motor and a method of operating same. A unit is provided for selectively energizing each of a plurality of phases in response to a drive pulse, wherein each drive pulse has three successive portions. The energizing unit includes a timer for establishing the delineation between the three portions of the drive pulse so that during a first portion of each drive pulse one other drive pulse for one other phase exists simultaneoulsy, during the second portion of each drive pulse drive pulses for none of the other phases exist, and during the third portion of each drive pulse a second other drive pulse for a second other phase …
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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 March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 1997.
- 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.