Accelerometer

Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element

Reexamination Certificate

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Details

C073S514260, C073S514310, C073S514320

Reexamination Certificate

active

06904805

ABSTRACT:
An accelerometer is limited to a very small displacement range, and within that range, is useful for detecting motion and change of rate of motion by optical, magnetic, or electrical means. A unique spring suspends a planar mass that is very sensitive to motion of an object in which the accelerometer is held. In one embodiment, an optical detector detects the motion of the mass by the intensity of reflected radiation. In another embodiment, a Hall-effect sensor detects the motion of the mass by a current generated by the motion of the mass in an electric field. The accelerometer may be used in a variety of automotive, appliance, and industrial applications.

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Communication Relating to the Results of the Partial International Search for corresponding PCT International Application No. PCT/US2004/016598, dated Aug. 20, 2004.

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