LOCKING CLUTCH FOR DOWNHOLE MOTOR

Abstract A method to selectively transmit torque from a stator of a downhole drilling motor to a rotor of the downhole drilling motor comprises locating a clutch between the stator and the rotor, rotating at least one locking pawl toward a disengaged position about a first pivot axis through centrif...

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Bibliographische Detailangaben
Hauptverfasser:	BEYLOTTE, JAMES EDMOND, UNDERWOOD, LANCE D
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	Abstract A method to selectively transmit torque from a stator of a downhole drilling motor to a rotor of the downhole drilling motor comprises locating a clutch between the stator and the rotor, rotating at least one locking pawl toward a disengaged position about a first pivot axis through centrifugal force when the speed of the rotor is below a disengagement speed, and rotating the at least one locking pawl from an engaged position to the disengaged position about a second pivot axis through centrifugal force when the speed of the rotor is about equal to or exceeds a disengagement speed. WO 2010/030272 -5/9 PCT/US2008/075850 x q 240 & 224