Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2006-06-13
2006-06-13
Patidar, Jay M. (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S207250
Reexamination Certificate
active
07061232
ABSTRACT:
A position transmitter includes at least one magnetoresistive sensor and an associated magnetic multipole wheel having a large number of uniformly arranged pole pairs (2). The at least one sensor comprises first, second third, and fourth magnetoresistive resistors that are electrically connected as a Wheatstone bridge with four half bridges, with a voltage UO being fed in one bridge diagonal and a sinusoidal or cosinusoidal signal being produced on the other diagonal. A distance (d) between the first and second or third and fourth resistors located paral el to one another is selected with reference to a scanning direction of the multipole wheel, such that it is not equal the wavelength of a pole pair. A distance between the first and second resistors and between the third and fourth resistors is the same.
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patent: 5430375 (1995-07-01), Inoue
patent: 5680042 (1997-10-01), Griffen et al.
patent: 5930905 (1999-08-01), Zabler et al.
patent: 6300758 (2001-10-01), Griffen et al.
patent: 195 06 938 (1996-08-01), None
Haas Gunther
Siegle Henrik
Patidar Jay M.
Robert & Bosch GmbH
Striker Michael J.
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