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Pendulous accelerometer and/or inclinometer

  • US 4,926,690 A
  • Filed: 03/07/1988
  • Issued: 05/22/1990
  • Est. Priority Date: 03/07/1988
  • Status: Expired due to Fees
First Claim
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1. A pendulous accelerometer indicating by deflection of an indicator element in an XZ plane a pendulous acceleration undergone by a mass accelerating in a YZ plane that is orthogonal to the XZ plane, the accelerometer comprising:

  • an X axis shaft, parallel to or coincident with an X coordinate axis;

    a first pendulous mass, affixed to the X axis shaft, moving in an arc due to an accelerating force in the YZ plane so as to induce rotation of the X axis shaft;

    a first member, affixed to the X axis shaft, defining at an extension from the X axis shaft and between two elements of the first member that are aligned approximately about radial lines from the X axis shaft a region that is capable of laterally interlocking a second member, the first member undergoing movement in the YZ plane corresponding to arcuate movement of the first pendulous mass;

    a Y axis shaft, parallel to or coincident with a Y coordinate axis;

    an angled helical second member in three dimensions and not in any one plane, affixed at two separated points to the Y axis shaft for an axis of rotation, and extending radially away from the Y axis shaft at these points until, a predetermined distance of separation having been reached, the second member runs along the length of the Y axis shaft at a pitch;

    the X axis shaft being located in an plane that is normal to the Y axis shaft and that intersects the Y axis shaft in the region of the second member;

    the second member laterally interlocked by the two elements of the first member'"'"'s extended region so that movement of the first member and the two elements of its extended region responsive to X axis shaft rotation causes a corresponding rotation of the second member and of the Y axis shaft.

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