Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft
Patent
1994-12-05
1996-05-28
Schoeppel, Roger J.
Boring or penetrating the earth
With storage means for bit lubricant carried by bit or shaft
175372, 277 92, 384 93, E21B 1024
Patent
active
055202578
ABSTRACT:
A shaft boring bit has a bit body with at least one saddle member secured to the bit body. The saddle receives and supports the ends of a journal member. A cutter is mounted for rotation on the journal member and an anti-friction bearing is disposed between the cutter and the journal and secures the cutter on the journal member. Seal means are provided between the cutter and the journal member to retain lubricant in the anti-friction bearing. A bearing loading passage is formed in the journal member for loading at least a portion of the anti-friction bearing between the cutter and the journal member. A lubricant compensator assembly is removably disposed in a lubricant compensator recess formed at one end of the journal. The lubricant compensator is in fluid communication with the anti-friction bearing and includes a rigid ball plug member, which obstructs the bearing loading passage and abuts the portion of the anti-friction bearing to retain the bearing between the cutter and journal. A resilient diaphragm is secured to an opposite end of the rigid member to enclose a lubricant reservoir partially defined in the ball plug. The diaphragm is in fluid communication with the exterior of the journal bearing and equalizes a pressure differential across the seal means.
REFERENCES:
patent: 2283312 (1942-05-01), Boice
patent: 2297192 (1942-09-01), Reed
patent: 2507776 (1950-05-01), Francis
patent: 2519716 (1950-08-01), Stokes
patent: 2814465 (1957-11-01), Green
patent: 3230020 (1966-01-01), Gilbert et al.
patent: 3251634 (1966-05-01), Dareing
patent: 3307645 (1967-03-01), Hildebrandt
patent: 3419093 (1968-12-01), Lichte et al.
patent: 3675729 (1972-07-01), Neilson
patent: 3762782 (1973-10-01), Rumbarger
patent: 3845994 (1974-11-01), Trey
patent: 3923348 (1975-12-01), Peck
patent: 4167980 (1979-09-01), Saxman
patent: 4190301 (1980-02-01), Lachonius et al.
patent: 4199856 (1980-04-01), Farrow et al.
patent: 4258806 (1981-03-01), Kunkel et al.
patent: 4316515 (1982-02-01), Pessier
patent: 4399879 (1983-08-01), Liljekvist et al.
patent: 4509607 (1985-04-01), Saxman et al.
patent: 4597455 (1986-07-01), Walters et al.
patent: 4727942 (1988-03-01), Galle et al.
patent: 5363930 (1994-11-01), Hern
Baker Hughes Incorporated
Felsman Robert A.
Perdue Mark D.
Schoeppel Roger J.
LandOfFree
Bit with ball plug compensator having pressure relief means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bit with ball plug compensator having pressure relief means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bit with ball plug compensator having pressure relief means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780792