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US4260202A
Expired / Lapsed
US
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Bearing assembly
Assignee: Halliburton Co
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Filing: 1979-08-20
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Granted: 1981-04-07
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Expires: 1999-08-20
Abstract
Abstract A bearing assembly, for a drive shaft connected to an in-hole motor rotor to drive a bit and a housing connected to the motor stator has sets of oppositely acting thrust bearings having corresponding members of bearings and parts at opposite sides of a thrust member on the shaft. Plural sets of thrust bearings are shown between spaced radial bearings to optimize load distribution.
Inventors
- 👤 Gary M. Crase
- 👤 Kurt M. Trzeciak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/003; F; F16; F16C; F16C19/00; F16C19/54; F16C2352/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
171 words
A bearing assembly for an in-hole motor having a stator and a rotor, said assembly including: a housing adapted for connection to said stator; a shaft in said housing adapted for connection to said rotor; bearing between said shaft and said housing in thrust transmitting relation therewith; said bearing including a member on said shaft having oppositely facing thrust shoulders, said bearing including a first pair of bearing elements one on one side of member said one on the other side of said member and engageable with said shoulders, a connection between said first pair of bearing elements and said shaft for unitary rotation thereof; a second pair of bearing elements, one of said second pair opposing one of said first pair for thrust transmission in opposite directions; a connection between said housing and said second pair of bearing elements for unitary rotation thereof; and opposing thrust members in said housing for transmitting thrust in opposite directions to said first pair of bearing elements through said second pair of bearing elements.
Claim 2
Dependent Claim
171 words
A bearing assembly for an in-hole motor having a stator and a rotor, said assembly including: a housing adapted for connection to said stator; a shaft in said housing adapted for connection to said rotor; bearing between said shaft and said housing in thrust transmitting relation therewith; said bearing including a member on said shaft having oppositely facing thrust shoulders, said bearing including a first pair of bearing elements one on one side of member said one on the other side of said member and engageable with said shoulders, a connection between said first pair of bearing elements and said shaft for unitary rotation thereof; a second pair of bearing elements, one of said second pair opposing one of said first pair for thrust transmission in opposite directions; a connection between said housing and said second pair of bearing elements for unitary rotation thereof; and opposing thrust members in said housing for transmitting thrust in opposite directions to said first pair of bearing elements through said second pair of bearing elements.
Claim 3
Dependent Claim
21 words
A bearing assembly as defined in claim 1; including springs between said thrust members and said second pair of bearing elements.
Claim 4
Dependent Claim
35 words
A bearing assembly as defined in claim 1; said member on said shaft being locked on said shaft for rotation therewith; said first pair of bearing elements being connected to said shaft by said member.
Claim 5
Dependent Claim
43 words
A bearing assembly as defined in claim 1; said member on said shaft being locked on said shaft for rotation therewith; said first pair of bearing elements and said member having interfitting portions connecting said first pair of bearing elements to said shaft.
Claim 6
Dependent Claim
61 words
A bearing assembly as defined in claim 1; said member on said shaft being locked on said shaft for rotation therewith; said first pair of bearing elements and said member having interfitting portions connecting said first pair of bearing elements to said shaft, said first pair of bearing elements being of the same configuration and turned oppositely to engage said member.
Claim 7
Dependent Claim
83 words
A bearing assembly as defined in claim 1; said member on said shaft being locked on said shaft for rotation therewith; said first pair of bearing elements and said member having interfitting portions connecting said first pair of bearing elements to said shaft, said first pair of bearing elements being of the same configuration and turned oppositely to engage said member, said second pair of bearing elements being of the same configuration and turned oppositely to oppose said first pair of bearing elements.
Claim 8
Dependent Claim
167 words
A bearing assembly for an in-hole motor having a stator and a rotor, said assembly comprising: a housing adapted for connection to said stator; a shaft in said housing adapted for connection to said rotor; bearing between said shaft and said housing including a plurality of axially spaced sets of thrust bearings, each set including a member on said shaft having oppositely facing thrust shoulders, a first pair of bearing elements one on each side of said member and engageable with one of said shoulders, a connection between said first pair of bearing elements and said shaft for unitary rotation thereof; a second pair of bearing elements, one of said second pair opposing one of said first pair for thrust transmission in opposite directions; a connection between said housing and said second pair of bearing elements for unitary rotation thereof; and opposing thrust members in said housing for transmitting thrust in opposite directions to said first pair of bearing elements through said second pair of bearing elements.
Claim 9
Dependent Claim
167 words
A bearing assembly for an in-hole motor having a stator and a rotor, said assembly comprising: a housing adapted for connection to said stator; a shaft in said housing adapted for connection to said rotor; bearing between said shaft and said housing including a plurality of axially spaced sets of thrust bearings, each set including a member on said shaft having oppositely facing thrust shoulders, a first pair of bearing elements one on each side of said member and engageable with one of said shoulders, a connection between said first pair of bearing elements and said shaft for unitary rotation thereof; a second pair of bearing elements, one of said second pair opposing one of said first pair for thrust transmission in opposite directions; a connection between said housing and said second pair of bearing elements for unitary rotation thereof; and opposing thrust members in said housing for transmitting thrust in opposite directions to said first pair of bearing elements through said second pair of bearing elements.
Claim 10
Dependent Claim
24 words
A bearing assembly as defined in claim 7; including radial bearings between said shaft and said housing at opposite sides of said thrust bearings.
Claim 11
Dependent Claim
54 words
A bearing assembly as defined in claim 7; said housing having axially spaced, opposed thrust shoulders engaged by said thrust members, one of said thrust members being between adjacent sets of thrust bearings in thrust transfer with one of the second pair of bearing elements of each set to transfer thrust in opposite directions.
Claim 12
Dependent Claim
71 words
A bearing assembly as defined in claim 7; said housing having axially spaced, opposed thrust shoulders engaged by said thrust members, one of said thrust members being between adjacent sets of thrust bearings in thrust transfer with one of the second pair of bearing elements of each set to transfer thrust in opposite directions; and including springs between said thrust members and said second pair of bearing elements of each set.
Claim 13
Dependent Claim
80 words
A bearing assembly as defined in claim 7; said housing having axially spaced, opposed thrust shoulders engaged by said thrust members, one of said thrust members being between adjacent sets of thrust bearings in thrust transfer with one of the second pair of bearing elements of each set to transfer thrust in opposite directions; said thrust members being interconnected with said housing, said second pair of bearing elements of each set being connected with said housing by said thrust members.
Claim 14
Dependent Claim
97 words
A bearing assembly as defined in claim 7; said housing having axially spaced, opposed thrust shoulders engaged by said thrust members, one of said thrust members being between adjacent sets of thrust bearings in thrust transfer with one of the second pair of bearing elements of each set to transfer thrust in opposite directions; and including springs between said thrust members and said second pair of bearing elements of each set, said thrust members being interconnected with said housing, said second pair of bearing elements of each set being connected with said housing by said thrust members.
References Cited (Backward Citations)
US4198104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |