Thrust generator for boring tools
CA 1181739 A · Owner: Dismukes, Newton B. · Inventors: Dismukes, Newton B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the provision of a system for providing forward thrust for a fluid immersed boring tool. More particularly, the invention provides the necessary thrust, a dynamic force, for the operation of a rotary boring tool in situations, such as the drilling of generally horizontal bore holes, where the force of gravity does not act effectively to provide forward thrust. The invention is especially efficaceous with flexible drill pipe or conduit such as may be used in drilling bore holes having a small radius of curvature. Thus this specification discloses a rotary drilling tool which includes a fluid passage extending through a boring means mounted at the end of a …
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 January 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2002.
- 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.