Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Reexamination Certificate
2006-04-04
2006-04-04
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
C029S592100, C029S603010, C360S324000, C360S324100, C360S324110
Reexamination Certificate
active
07023310
ABSTRACT:
A magnetic sensor includes eight SAF-type GMR elements. Four of the GMR elements detect a magnetic field in the direction of the X-axis and are bridge-connected to thereby constitute an X-axis magnetic sensor. The other four GMR elements detect a magnetic field in the direction of the Y-axis and are bridge-connected to thereby constitute a Y-axis magnetic sensor. The magnetization of a pinned layer of each of the GMR elements is pinned in a fixed direction by means of a magnetic field that a permanent bar magnet inserted into a square portion of a yoke of a magnet array generates in the vicinity of a rectangular portion of the yoke. A magnetic field generated in the vicinity of a certain rectangular portion of the yoke differs in direction by 90 degrees from a magnetic field generated in the vicinity of a rectangular portion adjacent to the former rectangular portion.
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Aiso Kokichi
Oohashi Toshiyuki
Barrera Ramon M.
Dickstein Shapiro Morin & Oshinsky LLP.
Yamaha Corporation
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