Quadrant driver for microwave switches
CA 2013098 C · Owner: Cappelli, Guido Giuseppe · Inventors: Cappelli, Guido Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quadrant driver is disclosed for use to drive the rotor, of a microwave switch at 90° from one given input-output configuration to another given input-output configuration and vice verse. The driver comprises a magnet and bearing holder rotatably mounted inside a housing. The holder supports, on one side, a thin, high magnetic density magnet and, on the other side, a bearing operatively connected to the rotor of the microwave switch to rotate this rotor when the holder is itself rotated, the holder and magnet being rotated between two rest positions, each of the rest positions corresponding to one of the two configurations of the microwave switch. A pair of coils are mounted concentric to …
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 March 27, 1990 and granted January 19, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2012.
- 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.