Locking apparatus for earth boring cutter or stabilizer
CA 1050005 A · Owner: Dresser Industries · Inventors: Mitchell, Howard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The rolling cutter or stabilizer member of a rotary drill string unit is effectiyely locked in place by a locking device. The device allows the cutter or stabilizer member to carry radial, tangential and axial loads. A support member includes a surface positioned perpendicular to the resultant of the expected radial load and tangential load. A support shaft includes a slabbed-off surface positioned perpendicular to the resultant of said resultant loads and said axial load. -1a-
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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 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.