Land vehicles – Wheeled – Attachment
Patent
1999-05-12
2000-08-01
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
B60R 2126
Patent
active
060955554
ABSTRACT:
An apparatus (10) for sensing a forward position of a vehicle seat (12)in a vehicle includes a permanent magnet (72) that is located adjacent the forward position and produces a magnetic field. A Hall effect device (70) is disposed in the magnetic field. A first member is mountable to the vehicle seat (12) and is movable with the seat in a path that extends adjacent the magnetic field to a predetermined forward position adjacent the Hall effect device (70) and the magnet (72). The first member is made of a ferromagnetic material. The magnet (72) creates a magnetic field of a first flux density that acts on the Hall effect device (70) to cause the Hall effect device (70) to provide a first output signal when the first member is rearward of the predetermined forward position. The magnet (72) creates a magnetic field of a second flux density that acts on the Hall effect device (70) to cause the Hall effect device (70) to provide a second output signal different than the first output signal when the first member is at or forward of the predetermined forward position.
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Becker David L.
Newman LaVerne R.
Rice Kenneth R.
TRW Inc.
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