Position detecting device for a linear drive including two magne

Details Position detecting device for a linear drive including two magne Position detecting device for a linear drive including two magne

1994-09-26

1996-05-07

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

32420724, G01B 730, G01B 714

Patent

active

055149618

ABSTRACT:
An ultrasonic position detecting device on a linear drive. The drive element of the linear drive bears a magnet arrangement cooperating with an adjacently placed sensor device which comprises an acoustic wave guide of magnetostrictive material. The magnet arrangement possesses an axially magnetized, annular or disk-like magnet part and, adjacent to the same, a pole part. By selection of the design of the pole part it is possible to affect the course of the magnetic field of the magnet part in order to achieve an optimum state for the sensor device.

REFERENCES:
patent: 4071818 (1978-01-01), Krisst
patent: 4344068 (1982-08-01), Thompson et al.
patent: 5198761 (1993-03-01), Hashimoto et al.
patent: 5264792 (1993-11-01), Luetzow et al.
patent: 5313160 (1994-05-01), Gloden et al.
patent: 5320325 (1994-06-01), Young et al.

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