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Tunable apparatus for adjusting effective performance of particle impact damper

  • US 10,041,558 B1
  • Filed: 10/06/2017
  • Issued: 08/07/2018
  • Est. Priority Date: 10/06/2017
  • Status: Active Grant
First Claim
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1. A particle impact damper for use with printed circuit boards, comprising:

  • a housing defining a chamber bounded by a plurality of surfaces;

    a plurality of particles disposed in the chamber and configured to move within the chamber;

    one or more threaded holes defined in one or more walls of the housing; and

    one or more threaded screws configured to be threadably inserted into the one or more threaded holes to seal the threaded holes, the one or more threaded screws being selectively adjustable to vary a distance the one or more threaded screws extend into the chamber, the one or more threaded screws configured to extend from a first position where the one or more threaded screws do not protrude into the chamber while being threadably coupled to the one or more threaded holes and a second position where the one or more threaded screws are fully inserted in the chamber and interposed between the plurality of particles,wherein adjusting the distance the one or more threaded screws extend into the chamber adjusts and tunes a volumetric capacity of the chamber and an effective mass and travel displacement of the plurality of particles in the chamber to thereby vary a damping performance of the particle impact damper.

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