Micro-switches for downhole use

Electricity: electrical systems and devices – Igniting systems – For explosive devices

Reexamination Certificate

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Details

C361S250000, C361S247000, C361S249000, C361S251000, C361S253000, C361S254000, C361S255000, C361S160000, C361S261000, C361S112000, C361S120000, C361S152000, C313S112000, C313S602000

Reexamination Certificate

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07116542

ABSTRACT:
A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provide a conductive path in response to receipt of electrical energy; and an element moveable in response to application of an electrical energy. The micro-switch may be formed of microelectromechanical system (MEMS) technology or microelectronics technology.

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patent: 520407 (1992-12-01), None
patent: 00/22279 (2000-04-01), None
patent: WO 2002/020820 (2000-04-01), None
patent: 01/43450 (2001-06-01), None
patent: WO 2002/001584 (2002-01-01), None

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