Bearings – Rotary bearing – Roller drill bit
Reexamination Certificate
2011-03-08
2011-03-08
Bagnell, David J (Department: 3672)
Bearings
Rotary bearing
Roller drill bit
C384S095000, C384S284000, C384S285000, C175S403000, C175S432000
Reexamination Certificate
active
07901137
ABSTRACT:
Embodiments of present invention relate to a bearing assembly, and a bearing apparatus and motor assembly that employs such a bearing assembly. In one embodiment of the present invention, a bearing assembly comprises a support ring including a plurality of recesses and at least one opening. The bearing assembly further includes a plurality of bearing elements, each of which is positioned generally within a corresponding one of the recesses. At least one of the bearing elements includes at least one groove. At least one retention element may be positioned generally within the at least one opening and adjacent to the at least one groove. Further embodiments of the present invention are directed to a thrust-bearing apparatus, a radial bearing apparatus, and a downhole motor that may utilize any of the disclosed thrust-bearing assemblies and radial bearing assemblies.
REFERENCES:
patent: 2506387 (1950-05-01), Ross
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4462638 (1984-07-01), DenBesten et al.
patent: 5092687 (1992-03-01), Hall
patent: 5480233 (1996-01-01), Cunningham
patent: 7703982 (2010-04-01), Cooley
Andrish Sean
Bagnell David J
US Synthetic Corporation
Workman Nydegger
LandOfFree
Bearing assembly, and bearing apparatus and motor assembly... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bearing assembly, and bearing apparatus and motor assembly..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bearing assembly, and bearing apparatus and motor assembly... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2629149