Arc diverter
CA 2077902 C · Owner: Anderson, Glen L. · Inventors: Yotive, David S.; Anderson, Glen L.; Hammond, Peter W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arc diverter (10) detects, an arc between the cathode (11) and the anode (12) of a glow , discharge apparatus and in response triggers a pair of switches (11, 23), to allow a capacitor (16) to discharge toward the cathode (11), along a resonant diverting path (26) and recharge the capacitor (16) for, subsequent discharge in an opposite direction. This discharge current , effectively short circuits the power supply and extinguishes the, arc. The diverter (10) includes two resonant diverting paths (27, 28), and four switches (20 21, 22, 23), configured in an "H" to hold the capacitor (16) in a charged condition. Alternate triggering of diagonally , situated switch pairs (21 23), and …
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 21, 1991 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2013.
- 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.