Variable speed latching motor control
CA 2113440 C · Owner: Motzko, Andrew R. · Inventors: Motzko, Andrew R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid-state motor power control (40) for portable paint pumps having a MOSFET power control device (50) operated from a solid-state electronic control circuit wherein the control circuit utilizes an operational amplifier (62 68) to selectively, operate as a switch driver in a first state and as a linear gain amplifier (62) in a second state. The solid-state control circuit has compensation means for compensating the MOSFET (50) for motor load variations in a pump motor (44) connected to the output of the solid state motor power control (40).
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
- Filed July 8, 1992 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2014.
- 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.