Universal electric motor with variable air gap
CA 2335151 A1 · Owner: Patarchi, Alberto · Inventors: Patarchi, Alberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a universal electric motor with variable air gap. It has a rotor (1) with one or more attraction steps and a stator (2) provided with an excitation system. The excitation system comprises mounted , consecutively distanced on a stator support (20) facing the rotor (1) at , least an electromagnet (21), provided with an armature (24) and with a winding (25), a control circuit (22), provided with a position detector (26) for supply power to the electromagnet, and a permanent magnet (23). The electromagnet (21) and the permanent magnet (23) are fastened onto the stator support (20) to excite the rotor alternatively and in adjustable positions to , change …
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 May 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2021.
- 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.