Mounted shock sensor

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S426240, C340S540000, C340S541000, C340S653000, C257S415000, C200S061490, C200S061510, C073S514010, C073S514160

Reexamination Certificate

active

07541939

ABSTRACT:
This application is directed to a shock sensor mounted in an electronic device. The shock sensor includes both active and passive shock detection methods that allow a technician to determine whether the electronic device was subjected to a shock event that exceeded an impact threshold level. The shock sensor may include shock detection contacts that form an electrical circuit that remains open in the absence of a shock event that exceeds an impact threshold level. In response to a significant shock event, a movable component or substance of the shock sensor may move from a first position to a second position, thereby closing the electrical circuit formed by the shock detection contacts. The change in circuit may be detected and used to provide active indication of whether the electronic device has been subjected to a substantial shock event. In addition, the shock sensor may be observed to passively determine whether the electronic device has been subjected to a substantial shock event.

REFERENCES:
patent: 3906802 (1975-09-01), Nonaka et al.
patent: 4683355 (1987-07-01), Bitko
patent: 5801348 (1998-09-01), Asada
patent: 6142007 (2000-11-01), Yuze et al.

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