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Tubular sensor with an inner projection

  • US RE45,883 E1
  • Filed: 06/16/2014
  • Issued: 02/09/2016
  • Est. Priority Date: 10/09/2008
  • Status: Expired due to Fees
First Claim
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1. A weight sensor comprising:

  • a deformable body includinga tubular portion having a tubular shape extending along a center axis and surrounding the center axis, the tubular portion having an outer side surface and an inner surface, the outer side surface facing in a direction away from the center axis, the inner surface facing the center axis, anda projection projecting from the inner surface of the tubular portion;

    a first strain resistor provided on the outer side surface of the deformable body; and

    a pressing member moving that moves along the center axis so as to apply and applies a load to the deformable body so as to apply a moment to the tubular portion of the deformable body, wherein;

    the pressing member presses the deformable body to urge the projection and the tubular portion of the deformable body relatively in directions which are opposite to each other and which are parallel with the center axis, andthe moment displaces an upper end and a lower end of the tubular portion in directions relatively opposite to each other in a radial direction about the center axis.

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