Reduction in wear of contacting surfaces
AssigneeCompagnie Francaise des Petroles
InventorAbel C. Cortes
Life of this patent
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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.
Claims10
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.
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.
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.
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.
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.
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.
Dependencies are inferred from the claim text.