Electromagnetic joint forming method and apparatus and improved mobile unit frames
CA 2282290 A1 · Owner: Techmatics, Inc. · Inventors: Spacht, Glenn L.; Benoit, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for coupling tubular elements (12 14, 16, 18, 20 and , 22) of a frame (10) without welding or adhesive bonding. Connection elements (24, 26 and 28) are used with which mechanical connections may be accomplished by relatively deforming one of the connection elements and its respective tubular element. Preferably, the connection element (24 26 and 28) is shaped , to be inserted within a hollow end of a tubular element and includes radially inwardly directed recesses (46). The tubular element is deformed with respect to the recesses, preferably by electromagnetic pulse forming to thereby lock , the tubular element and connection element (24 26 and 28) against …
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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 July 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2019.
- 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
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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.