Patent US4927991A successfully refreshed from Google Patents.
US4345798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction in wear of contacting surfaces
Assignee: Total Compagnie Francaise des Petroles SA
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Filing: 1981-04-28
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Granted: 1982-08-24
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Expires: 2001-04-28
Abstract
Abstract To reduce the wear of surfaces of anti-friction devices or bearings, the surfaces are diamonded, e.g. by being provided with diamonds or by being the surfaces of diamond-containing concretions, and are lapped before use, substantially no further wear occuring after the surfaces have been lapped.
Inventors
- 👤 Abel C. Cortes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:58
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/24; E; E21; E21B; E21B23/00; E21B23/04; E21B23/0419; E21B4/00; E21B4/02; F16C17/00; F16C17/04; F16C33/043; F16C17/10; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/91
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A drilling turbine, comprising; a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped diamonded surface, one of said surfaces being provided on a ring fixed to a rotor of said drilling turbine, the other said surface being fixed to a ring of a stator of said drilling turbine, said diamonded surface of one of said rings engaging said diamonded surface of the other of said rings.
Claim 2
Dependent Claim
76 words
A drilling turbine, comprising; a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped diamonded surface, one of said surfaces being provided on a ring fixed to a rotor of said drilling turbine, the other said surface being fixed to a ring of a stator of said drilling turbine, said diamonded surface of one of said rings engaging said diamonded surface of the other of said rings.
Claim 3
Dependent Claim
22 words
A drilling turbine as claimed in claim 1, wherein said diamonded surface of said stator comprises shoes made of a diamond-containing concretion.
Claim 4
Dependent Claim
24 words
A drilling turbine as claimed in claim 2, wherein said concretion comprises diamonds inset in a sintered mass containing at least one metallic carbide.
Claim 5
Dependent Claim
56 words
An antifriction device for a drilling turbine comprising; a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a concretion of diamonds sunk in a sintered mass consisting of at least one metallic carbide and one metal.
Claim 6
Dependent Claim
56 words
An antifriction device for a drilling turbine comprising; a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a concretion of diamonds sunk in a sintered mass consisting of at least one metallic carbide and one metal.
Claim 7
Dependent Claim
51 words
An anti-friction device comprising: a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a diamond-containing concretion sunk in a sintered mass consisting of at least one metallic carbide and one metal.
Claim 8
Dependent Claim
51 words
An anti-friction device comprising: a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a diamond-containing concretion sunk in a sintered mass consisting of at least one metallic carbide and one metal.
Claim 9
Dependent Claim
64 words
A drilling turbine, comprising; a stator provided with an annular support member, a series of shoes disposed on said support member, a rotor provided with a circular support, and a ring fixed to said support, said shoes and said ring together constituting a bearing member for said turbine, said shoes and said ring each comprising a diamond containing concretion having a lapped, diamonded surface.
Claim 10
Dependent Claim
64 words
A drilling turbine, comprising; a stator provided with an annular support member, a series of shoes disposed on said support member, a rotor provided with a circular support, and a ring fixed to said support, said shoes and said ring together constituting a bearing member for said turbine, said shoes and said ring each comprising a diamond containing concretion having a lapped, diamonded surface.
Claim 11
Dependent Claim
40 words
A drilling turbine as claimed in claim 6, further comprising a further bearing mounted on a radially inner surface of said support member, said further bearing opposing a cylindrical surface of said rotor, said cylindrical surface being a diamonded surface.
Claim 12
Dependent Claim
25 words
A drilling turbine as claimed in claim 6, further comprising cooling fluid circulating between said shoes and said ring, said cooling fluid comprising drilling sludge.
Claim 13
Dependent Claim
46 words
An anti-friction device for use in a drilling turbine, comprising a pair of opposed surfaces arranged in sliding contact with one another, each of said surfaces comprising lapped diamond containing concretions, and a cooling fluid circulating between the opposed surfaces, said cooling fluid comprising drilling mud.
Claim 14
Dependent Claim
46 words
An anti-friction device for use in a drilling turbine, comprising a pair of opposed surfaces arranged in sliding contact with one another, each of said surfaces comprising lapped diamond containing concretions, and a cooling fluid circulating between the opposed surfaces, said cooling fluid comprising drilling mud.
Claim 15
Dependent Claim
49 words
An anti-friction device comprising: a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a diamond-containing concretion, and cooling fluid circulating between said surfaces, said cooling fluid comprising drilling sludge.
Claim 16
Dependent Claim
49 words
An anti-friction device comprising: a pair of surfaces adapted to be in sliding contact with one another, each said surface comprising a lapped, diamonded surface, wherein each of said diamonded surfaces consists of a diamond-containing concretion, and cooling fluid circulating between said surfaces, said cooling fluid comprising drilling sludge.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |