Accelerometer or decelerometer for vehicle brake control system
Patent 4849655 Issued on July 18, 1989. Estimated Expiration Date: 
March 3, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 3, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3867844 Method and arrangement for sensing the acceleration of oscillating bodies Deceleration sensor for an electric brake controller Patent #: 4726627 InventorAssigneeApplicationNo. 07/166807 filed on 03/03/1988US Classes:73/514.31, Inductive or magnetic sensor (e.g., Hall effect sensor)303/24.1, INERTIA CONTROL327/511, Utilizing Hall effect73/514.36Pendulum or beamExaminersPrimary: Chapman, Jeanette E.Attorney, Agent or FirmInternational ClassesB60T 7/20 (20060101)B60T 8/17 (20060101) B60T 8/171 (20060101) G01P 15/08 (20060101) G01P 15/105 (20060101) Foreign Application Priority Data1985-07-04 AUAbstractA sensing device which is suitable for use as a decelerometer comprises a magnetic field producing element and a Hall effect sensor element with one of the elements supported for movement relative to the other. The arrangement is such that when the device undergoes acceleration or deceleration the support allows relative movement between the elements so that the sensor element produces an output indicative of the change in field the sensor element detects from the field producing element due to the relative movement between the elements to thereby provide an indication of acceleration or deceleration of the device. The output of the sensor is connected to a differential amplifier, and the output of the amplifier is connected to a transistor in parallel with a capacitor. When the device undergoes deceleration, the output signal of the sensor increases, causing the output voltage of the differential amplifier to decrease, which in turn causes the voltage across the capacitor to discharge. | |
