Pipe cage end forming machine and method
CA 1053124 A · Owner: U.S. Automation Company · Inventors: Borodin, Daniel J.; Tolliver, Wilbur E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification discloses a method of forming the end on a closed loop member such as a pipe reinforcing cage or the like. The method includes the steps of engaging the closed loop member at least at one end thereof at two spaced points and applying a force between the two points on the engaged portions. A heat source is applied to localized zone along the engaged portion between the two points sufficient to lower the yield point of the engaged portion material to allow a change in the cross section of the engaged portion at the force level generated between the two points.
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 April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
- 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.