G - Physics – 11 – C
Patent
G - Physics
11
C
255/11
G11C 11/24 (2006.01) B25D 17/02 (2006.01) E21B 7/18 (2006.01) E21B 10/38 (2006.01) E21B 17/02 (2006.01) E21C 25/60 (2006.01) E21C 27/28 (2006.01)
Patent
CA 1279865
ABSTRACT In a percussive tool in which a very high pressure and preferably cavitating water jet is directed through an opening in the working surface of the tool, the jet is formed by a nozzle positioned in a cavity behind the opening and decoupled from the tool by a bearing layer of water from the jet. A supply pipe extends rearwardly of the nozzle without contacting the tool, and is supported externally of the tool, on a machine which operates the tool, by a support which allows the fluid bearing to centre the nozzle within the cavity whilst restraining movement of the nozzle axially of the tool.
548607
Dorscht John P.
James Bruce
Dorscht John P.
James Bruce
Minister Of Energy Mines And Resources
Ridout & Maybee Llp
Teledyne Canada Limited
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