Overcurrent protection equipment
CA 1104638 A · Owner: Stoger, Helmut · Inventors: Stoger, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrical on-off switching system particularly for process, control, having a bimodal operation with a first operational low current, mode response and second emergency high current, mode, comprising, multiple sets of switch contacts and separate linkage for the first and second modes arranged such that the spreading of switch contacts for electrical circuit interruption is less in the first mode than in the second and further comprising a snap action in both modes of operation and non-interference between the linkages providing the two modes of operation.
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
- Granted July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
- 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.