Direct current adjusting device
CA 1285315 C · Owner: Braun Aktiengesellschaft · Inventors: Bauer, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
05295, Abstract of the Disclosure, Direct Current Adjusting Device The invention is directed to a direct current adjusting device for a direct current motor 3 with a free-wheeling diode which is connected in parallel with the armature winding and with a controllable switching element 2 which is connected in series with the armature winding including, a pulse duration modulator configured as a two-step controller and comprising a first comparator with hysteresis 10. A control voltage Ust1 predetermining the desired rotational speed is applied to the one input of the first comparator with hysteresis 10 while its other input is connected to an integrating element 7 9 connected to, a control …
Read the whole patent
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 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 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.