Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1993-10-22
1995-10-31
Williams, Hezron E.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
310 11, G01P 1508
Patent
active
054619190
ABSTRACT:
Angular motion sensor for sensing angular velocity components at higher frequencies. A first lower case member open at the top thereof supports a magnet therein for establishing a magnetic field oriented parallel to a central axis of the lower case. An insulating surface covers the magnet and a conductive liquid is disposed in a channel defined by the insulating surface and the lower case sidewalls. An upper case having an insulated inner surface including a sidewall structure complementary to the lower case sidewall structure forms a lid for the channel and is insulated from the lower case. The upper case is insulated from the conductive liquid, except at a hole in the insulation lying along a central axis of the lower case and upper case. Relative motion between the liquid mass and upper and lower case structures generates a voltage potential between the upper and lower cases, representing the relative velocity.
REFERENCES:
patent: 3948107 (1976-04-01), Asmar
patent: 4718276 (1988-01-01), Laughlin
patent: 4780589 (1988-10-01), Davies
patent: 5067351 (1991-11-01), Laughlin
Maxtor Corporation
Oda Christine K.
Tracy Emery L.
Williams Hezron E.
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