Fluoroscopic examination of pipe girth welds
CA 1206278 A · Owner: Kaiser Steel Corporation · Inventors: Stamp, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for radiographically inspecting the girth weld seam on a double jointed pipe including a cart on which the pipe is mounted, for transporting the pipe longitudinally to a location where it surrounds a radiation source mounted on one end of a cantilevered boom. A radiation detection unit that produces a visible image of radiation penetrating through the pipe is disposed on the outside of the pipe in alignment with the radiation source. When the girth weld on the pipe is brought into registry with the radiation source by the cart, rollers on the cart are actuated to rotate the pipe about its longitudinal axis thereby, enabling the entire periphery of the girth weld to be inspected. …
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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
- Granted June 17, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 2003.
- 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.