Crossflow rotary cone rock bit with extended nozzles
CA 1323025 C · Owner: Smith, Richard D. · Inventors: Oliver, Michael S.; Crouse, Richard D.; Chia, Weng-Kwen R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three cone rock bit is disclosed having at least a pair of mini-extended nozzles extending from a dome portion of the bit. Two 120° leg segments contain extended nozzles, a third 120° segment is nozzleless. The miniextended nozzles convert hydraulic pressure to kinetic fluid flow energy with a minimum of flow disturbance thereby delivering a concentrated flow of fluid against the floor of the formation and across the cutting face of the bit, sweeping detritus past the nozzleless 120° leg segment and up the borehole. A centerjet mini-extended nozzle may additionally be positioned in the rock bit dome to further enhance borehole penetration.
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 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
- 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.