Two compartment motor and method of manufacturing same
CA 2089298 C · Owner: General Electric Company · Inventors: Marks, Michael Allen; Fisher, Lynn Edwin; Smith, David Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two compartment motor has a frame, a pair of end shields disposed adjacent opposing ends of the frame to define a first compartment, a stator winding supported by the frame within the first compartment an armature, rotatably supported by the end shields and disposed within the first compartment adjacent the stator winding a cover mounted to the motor adjacent one of the end shields to define a second compartment between the cover and the end shield, and a control plate mounted within the second compartment. The control plate serves as a mounting surface for securing a plurality of electrical components used in the control and operation of the motor in position within the second …
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 February 11, 1993 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2015.
- 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.