Well drill pipe support
CA 1087602 A · Owner: Friesen, Wellington · Inventors: Friesen, Wellington
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
WELL DRILL PIPE SUPPORT", ABSTRACT OF THE DISCLOSURE An adjustable vise support is engaged over the upper end of the well casing with the drill pipe string extending freely therethrough and into the well bore. When it is desired to support the drill pipe string for attaching or detaching additional lengths of drill pipe the movable jaw, is adjusted and swung closed whereupon the coupling between adjacent lengths of drill pipe, engages the upper sides of the jaws by the lower end thereof thereby supporting the drill string so that the uppermost pipe length can be attached or detached. The movable jaw is readily swung clear when the uppermost length of the pipe has been attached or detached …
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 October 14, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 1997.
- 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.