Dissimilar element mechanical and electrical connection and method (cadlok)
CA 2280315 C · Owner: Kadlowec, Jeff · Inventors: Olle, Ray; Kadlowec, Jeff; Colarusso, Louis J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A connection is provided between two dissimilar elements such as an, aluminum bus and a copper contact. Also provided is a method and apparatus for making the connection. One application is as an anode electrode hanger in an, electric smelting furnace. The connection provides a lower resistance electrical, connection which can be made while the power to the system is on. In a preferred form the contact is inserted and clamped in the bottom of a chamber in, a refractory mold assembly. The chamber opening to the face of the mold assembly is somewhat deeper than the contact. The face of the mold assembly is clamped against the bus, and exothermic weld material is ignited to form a molten …
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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 August 16, 1999 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 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.