Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1994-01-12
1998-03-03
Oda, Christine K.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
280735, G01P 1511
Patent
active
057237891
ABSTRACT:
An impact sensor comprising a non-ferrous housing having a passage therein and an end member provided at each end of the housing for enclosing the passage at opposite end thereof. At least one pair of magnetic members is mounted in spaced relation in the passage with the first of the at least one pair of magnetic members being rigidly secured in the housing. The second of the at least one pair of magnetic members is slidably positioned in the passage. Each member of the at least one pair of magnetic members has opposite magnetic poles and are positioned in the passage with a pair of poles of like polarity facing each other and with only the repelling magnetic force between the poles of like polarity serving to maintain the spaced relation between the magnetic members of the at least one pair of magnetic members. An inductance coil is circumferentially mounted about the housing. The inductance coil is positioned intermediate the magnetic members of the at least one pair of magnetic members and so disposed relative to the path of the slidable magnet so that a voltage is induced in said coil by movement of the magnet on its path responsive to an impact force acting on the housing. Conducting elements extend from the coil to transmit voltage from the coil.
REFERENCES:
patent: 2852243 (1958-09-01), Shepard, Sr.
patent: 3100292 (1963-08-01), Warner, Jr.
patent: 3129347 (1964-04-01), Tognola
patent: 3580176 (1971-05-01), Boswell
patent: 4737774 (1988-04-01), Chapman
patent: 4754644 (1988-07-01), Valenti
Garvin, Jr. John C.
Hilton Harold W.
Oda Christine K.
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