Switch apparatus and method for assembly
CA 2034846 C · Owner: Martin, Donald R. · Inventors: Martin, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical switch apparatus comprising at least one set of contacts including a movable contact and a stationary contact at, least one chamber surrounding the contacts a first support for, supporting the chamber a second support for supporting the, stationary contact with respect to the chamber an adhesive for, attaching the first and second supports to the chamber a, non-circular drive shaft, a connection mechanism for coupling the moving contact to the drive shaft, a locating mechanism for securing the connection mechanism along the drive shaft a coupling, mechanism associated with the drive shaft for transmitting rotational energy to the drive shaft, the coupling mechanism having an …
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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 January 24, 1991 and granted October 7, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.