Seat weight sensor

  • US 6,286,861 B1
  • Filed: 09/07/1999
  • Issued: 09/11/2001
  • Est. Priority Date: 12/19/1996
  • Status: Expired due to Term
First Claim
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1. A system for measuring the weight upon a seat, comprising:

  • a. a bladder mountable beneath the cushion of a seat and supportable by the base of the seat, wherein said bladder is constructed from a flexible material;

    b. a fluid contained by said bladder, the volume of said fluid in said bladder being less than the capacity of said bladder in the absence of an external load applied to said bladder;

    c. a pressure sensor operatively coupled to said bladder for generating a signal responsive to the pressure of said fluid within said bladder; and

    d. a signal processor for generating a measure of weight from said signal.

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