Acceleration detector having highly accurate gaps in magnetic ci

Details Acceleration detector having highly accurate gaps in magnetic ci Acceleration detector having highly accurate gaps in magnetic ci

1992-03-13

1994-11-01

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

336 30, G01P 1511

Patent

active

053598946

ABSTRACT:
An acceleration detector includes a magnetic body movable under acceleration, and a differential transformer having primary coils and secondary coils and arranged so that an output differential is produced between the secondary coils when the movable magnetic body is displaced. The movable magnetic body extends through the primary coils and the secondary coils and has opposite ends protruding from the coils. Leaf springs are provided to support the protruding ends of the movable magnetic body. The case comprises a cylindrical body surrounding the outer periphery of the differential transformer and lids closing openings of the body at both ends thereof. Between the lids and both ends of the movable body predetermined gaps are provided through which a magnetic flux can flow. The leaf springs are secured in position between end faces of the body and the lids.

REFERENCES:
patent: 2332994 (1943-10-01), Draper
patent: 2570672 (1951-10-01), Hathaway
patent: 2870422 (1959-01-01), Gindes
patent: 3440459 (1969-04-01), Pitt
patent: 3540291 (1970-11-01), Ivers
patent: 4922753 (1990-05-01), Idogaki
patent: 5220834 (1993-06-01), Saito

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