E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/78
E21B 10/24 (2006.01) E21B 10/20 (2006.01) F16J 15/34 (2006.01)
Patent
CA 1292220
ABSTRACT OF THE DISCLOSURE An earth boring bit having a cantilevered bearing shaft and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly, positioned between the cutter and bearing shaft of the bit, moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. The positioning and sizing of resilient energizer rings in relationship to the geometries of the mating grooves between the cutter and shaft and the rigid sealing rings of the face seal assembly minimize axial seal movement relative to cutter and shaft during drilling to enhance seal life. A threaded bearing lug receives an internally threaded bearing sleeve. The journal bearing surface is approximately midway between the shaft seal groove, a portion of which is on its bearing sleeve and another portion on the cutter seal groove.
559193
Burr Bruce H.
Burr Bruce H.
Gowling Lafleur Henderson Llp
Hughes Tool Company
Hughes Tool Company-Usa
LandOfFree
Earth boring bit with two piece bearing and rigid face seal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Earth boring bit with two piece bearing and rigid face seal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth boring bit with two piece bearing and rigid face seal... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1233877