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Vibration amplitude measuring device

  • US 4,325,259 A
  • Filed: 10/07/1980
  • Issued: 04/20/1982
  • Est. Priority Date: 10/07/1980
  • Status: Expired due to Term
First Claim
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1. A device for the measurement of vibration amplitude and frequency comprising:

  • sensor means having a probative surface for monitoring variations in the position of a target surface relative to a point located a predetermined distance from the probative surface and having means for generating an output indicative of the target surface position,means for interpreting and indicating the output of said sensor means,a sensor housing having a front face for contacting the target surface,means for supporting said sensor means within said sensor housing so that the probative surface of said sensor means is positioned said predetermined distance from the front face of said sensor housing, providing a path for communication between the probative surface of said sensor means and the target surface,a base housing having a front face having an opening therein,means for supporting said sensor housing within said base housing so that said sensor housing is permitted to slide along an axis within said base housing, defining a path of travel communicating with the opening in the front face of said base housing,and biasing means within said base housing to bias said sensor housing along the path of travel against the target surface with the front face of said sensor housing protruding from the front face of said base housing so that when the target surface is caused to vibrate, said sensor housing remains substantially stationary at one peak of vibration, tracking thermally induced changes in the position of one peak of vibration, while said sensor means detects variations in the position of the target surface due to vibration.

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