Invention Grant
- Patent Title: Rock bit with a thermal insulating seal ring positioned in the seal gland
- Patent Title (中): 位于密封盖中的绝热密封环的钻头
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Application No.: US12870471Application Date: 2010-08-27
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Publication No.: US07971660B2Publication Date: 2011-07-05
- Inventor: Thomas Gallifet
- Applicant: Thomas Gallifet
- Applicant Address: US TX Carrollton
- Assignee: Varel International, Ind., L.P.
- Current Assignee: Varel International, Ind., L.P.
- Current Assignee Address: US TX Carrollton
- Agency: Gardere Wynne & Sewell LLP
- Agent Andre M. Szuwalski
- Main IPC: E21B10/00
- IPC: E21B10/00
Abstract:
A rock bit includes a shaft and a cone mounted for rotation about the shaft at a journal bearing. A seal gland for the rock bit is defined at least by the shaft and the cone. A compressible seal ring is positioned within the seal gland. A thermal insulating ring is installed within the seal gland and positioned between the compressible seal ring itself and the journal bearing to insulate the compressible seal ring from heat radiating from the journal bearing.
Public/Granted literature
- US20100320002A1 ROCK BIT WITH A THERMAL INSULATING SEAL RING POSITIONED IN THE SEAL GLAND Public/Granted day:2010-12-23
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