Bidirectional motor drive circuit
CA 1284348 C · Owner: Juzswik, David L. · Inventors: Juzswik, David L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bidirectional Motor Drive Circuit A drive circuit is provided for a bidirectional DC inductive motor, as may be used for automotive window wipers and the like. Four power MOSFETS are connected in an H-bridge configuration with the motor and a DC source. A pair of input terminals receives respective direction-controlling logic signals. Respective intermediate switching circuits are connected between each input terminal and the high-side and low-side power MOSFETS connected to the same motor terminal for controlling those two power MOSFETS in a complementary manner. A braking signal may also be applied to the input terminals. A third terminal receives a pulse-width modulated control signal …
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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 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.