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Mercury inertial transducer and light-emitting indicator for motor vehicles

  • US 4,920,330 A
  • Filed: 07/18/1988
  • Issued: 04/24/1990
  • Est. Priority Date: 07/16/1987
  • Status: Expired due to Fees
First Claim
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1. A mercury inertial transducer comprising:

  • a casing which defines a substantially L-shaped cavity with a substantially horizontal lower arm and a substantially vertical ascending arm, with reference to its position of use;

    a volume of mercury which, in a rest condition, occupies the lower arm and essentially does not occupy the ascending arm;

    an input electrode which penetrates the lower arm from the outside and is permanently immersed in the mercury, andoutput electrode means which penetrate the ascending arm from the outside and can be reached by the mercury when the mercury rises in the ascending arm due to an inertial force directed along the lower arm and towards the ascending arm,wherein the output electrode means are constituted by a series of separate output electrodes which are spaced along the ascending arm and can be reached in succession by the mercury andwherein said transducer includes a support which can be fixed to a movable object, such as a motor vehicle, and on which the transducer is mounted so as to enable the adjustment of the inclination of its lower arm to the horizontal and of its ascending arm to the vertical.

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