ANTIROTATIONSVORRICHTUNG FÜR BOHRLOCHWERKZEUGE

ANTIROTATIONSVORRICHTUNG FÜR BOHRLOCHWERKZEUGE

In an apparatus (20) for use in a borehole of a type comprising a rotatable shaft (24) and a housing (46) for rotatably supporting the shaft therein, a rotation restraining device (252) is associated with the housing (46) for restraining its rotation. The device (252) includes a plurality of rollers...

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Hauptverfasser: RESTAU, BRYAN JAMES, CARGILL, EDWARD-JAMES
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Sprache:ger
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator RESTAU, BRYAN JAMES
CARGILL, EDWARD-JAMES
description In an apparatus (20) for use in a borehole of a type comprising a rotatable shaft (24) and a housing (46) for rotatably supporting the shaft therein, a rotation restraining device (252) is associated with the housing (46) for restraining its rotation. The device (252) includes a plurality of rollers (254), each having an axis of rotation substantially perpendicular to a longitudinal axis of the housing (46) and being oriented such that it is capable of rolling about its axis of rotation in response to a force exerted thereon substantially in the direction of the longitudinal axis, wherein at least two of the rollers (254) are spaced about a circumference of the housing (46) and axially along the housing (46) so that the rollers (254) are staggered axially along the housing (46). Alternatively, the device (252) includes a plurality of pistons (268), wherein at least two of the pistons (268) are spaced about a circumference of the housing (46) and axially along the housing (46) so that the pistons (268) are staggered axially along the housing (46).
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The device (252) includes a plurality of rollers (254), each having an axis of rotation substantially perpendicular to a longitudinal axis of the housing (46) and being oriented such that it is capable of rolling about its axis of rotation in response to a force exerted thereon substantially in the direction of the longitudinal axis, wherein at least two of the rollers (254) are spaced about a circumference of the housing (46) and axially along the housing (46) so that the rollers (254) are staggered axially along the housing (46). 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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title ANTIROTATIONSVORRICHTUNG FÜR BOHRLOCHWERKZEUGE
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