GB939774A - - Google Patents
Info
- Publication number
- GB939774A GB939774A GB3453361A GB3453361A GB939774A GB 939774 A GB939774 A GB 939774A GB 3453361 A GB3453361 A GB 3453361A GB 3453361 A GB3453361 A GB 3453361A GB 939774 A GB939774 A GB 939774A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- lubricant
- plug
- sheath
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000314 lubricant Substances 0.000 abstract 5
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
- E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling And Boring (AREA)
Abstract
939,774. Lubricators &c. HUGHES TOOL CO. Sept. 26, 1961, No. 34533/61. Class 12 (3). [Also in Group XXI] A bearing assembly for earth boring drills of the rolling cutter type wherein lubrication means comprises a.chamber 25 provided in a bit leg 3, counterbored, 30, at its open end to receive plug 31 which may be secured by pin 32 which serves as a breather. The plug 31 is reduced externally at its lower end 34 and a peripheral groove 35 is formed therein. The annular space between the plug 31 and the wall of the counterbore 30 receives the end of a sheath 36 of impervious flexible material, the sheath being held in place by an elastic ring 37 which also forms a seal between chamber 25 and the exterior of bit head 2. The lower end of the chamber 25 communicates with a cut-away portion in pin 16, the pin being further contoured or drilled to provide lubricant passages to selected points in the assembly. When the plug 31 is installed in the chamber 25, the assembly, having been prior filled with lubricant 26, the sheath 36 assumes the configuration shown and forms a flexible barrier between the lubricant and the space in the upper portion of bore 33. This construction permits ebb and flow of lubricant throughout the bearings 8 and 9 and to and from chamber 25 upon any movement of cutter 7 relative to shaft 4, giving rise to a volumetric charge within the bearing. An annular frusto-conical sealring 20 forms a seal between surface 22 at the base of the cutter 7 and shoulder 21 at the base of the shaft 4 to retain the lubricant and prevent extraneous matter from entering the bearing assembly.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3453361A GB939774A (en) | 1961-09-26 | 1961-09-26 | |
DEH43829A DE1192997B (en) | 1961-09-26 | 1961-10-07 | Lubricating device for bearings |
FR876191A FR1310634A (en) | 1961-09-26 | 1961-10-17 | Lubricated Bearing System for Drill Bits |
BE609287A BE609287A (en) | 1961-09-26 | 1961-10-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3453361A GB939774A (en) | 1961-09-26 | 1961-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB939774A true GB939774A (en) | 1963-10-16 |
Family
ID=10366811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3453361A Expired GB939774A (en) | 1961-09-26 | 1961-09-26 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE609287A (en) |
DE (1) | DE1192997B (en) |
FR (1) | FR1310634A (en) |
GB (1) | GB939774A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4199856A (en) * | 1978-07-31 | 1980-04-29 | Dresser Industries, Inc. | Method of providing lubricant volume displacement system for a rotary rock bit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1041890B (en) * | 1957-10-08 | 1958-10-30 | Karl Guenther Bechem | Roller chisel |
GB862104A (en) * | 1958-05-27 | 1961-03-01 | Hughes Tool Co | Lubricant seal |
-
1961
- 1961-09-26 GB GB3453361A patent/GB939774A/en not_active Expired
- 1961-10-07 DE DEH43829A patent/DE1192997B/en active Pending
- 1961-10-17 FR FR876191A patent/FR1310634A/en not_active Expired
- 1961-10-18 BE BE609287A patent/BE609287A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1192997B (en) | 1965-05-20 |
FR1310634A (en) | 1962-11-30 |
BE609287A (en) | 1962-04-18 |
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