Vacuum electrical switch
CA 2069688 A1 · Owner: Bolongeat-Mobleu, Roger · Inventors: Bolongeat-Mobleu, Roger; Malkin, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum electrical switch comprises a coil (68) arranged in the metal base plate (42) of the cartridge (38). The metal base plate (42) constitutes a current input to the contact this, input having a radial conducting path and a path forming a spiral (68), electrically connected in parallel. In order to enhance the current flow in the spiral which forms an axial, magnetic blowout coil the base plate (42) has ripples (74) or a slit (76) which lengthen the radial conducting path. Refer to figure 2.
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, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.