Controlling activation of devices

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6433991
SERIAL NO

09496448

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An actuator assembly includes an operating actuator and a holding actuator that are engageable with an operator member of a device. The operating actuation is cycled between on and off states to move the operator member in incremental steps, and the holding actuator is maintained in an active state to maintain or latch the current position of the operator member. Each of the operating and holding actuators may include one of the following: a solenoid actuator; and an actuator including one or more expandable elements, such as a piezoelectric element, a magnetostrictive element, and a heat-expandable element.

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Patent Owner(s)

Patent OwnerAddress
SCHLUMBERGER TECHNOLOGY CORPORATION300 SCHLUMBERGER DRIVE SUGAR LAND TX 77478

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Deaton, Thomas M Houston, TX 28 814
Leismer, Dwayne D Pearland, TX 22 719
Read, Dennis M Manvel, TX 6 209

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