Spot welding head
CA 2199667 C · Owner: Premark Packaging Llc · Inventors: Katoh, Kanami
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The spot welding head comprises a spot electrode 6 a spot electrode, supporter 3 holding the electrode 6 on its tip a base member 2 holding the, supporter 3 in such a manner that the supporter can swing on a first pin 4 a, frame 1 holding the base member 2 in such a manner that the member can swing on a pivot pin 14 as a second pin a guide 17 for guiding the base, member 2 relatively to the frame 1 in such a manner that the member can slide longitudinally, a first actuator 5 connected at its one end to the supporter 3 for swinging the supporter relatively to the base member 2 when a steel strap is spot-welded, and a second actuator 9 connected at its one end to the frame 1 and at its other …
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 11, 1997 and granted December 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 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
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.