Patent ID: 7246850
Filing Date: 2007-07-24
Classification: B60N,B60R,G01G

Abstract:
1. A seat weight sensor, comprising: a seat rail positioned under a vehicle seat; a lever arm, wherein a first end of the lever arm includes a free finger and one or more stationary fingers, wherein the one or more stationary fingers are mounted to the seat rail such that the end of the stationary fingers cannot move vertically and a second end of the lever arm, rigidly mounted to the seat rail; a sensor, mounted to the seat rail; a plunger, connected to the free finger, wherein the plunger is positioned within a housing so that its movement is restricted to the vertical axis; and one or more magnets positioned inside the plunger, wherein the sensor detects changes in a magnetic field created by the magnets when the plunger is put in motion by the free finger.