Unidirectional particle damper for printed circuit boards and planar surfaces

An electronic device, comprising:

• a particle impact damper comprising:
• a housing defining a plurality of separate storage chambers therein;
• and
• a plurality of elongate particles, each elongate particle disposed and configured to move unconstrained unidirectionally without significant movement in any other direction within one of the plurality of storage chambers;
• and
• a printed circuit board;
• wherein:
• an effective diameter of each of the storage chambers is greater than an effective diameter of the elongate particle disposed in the storage chamber to thereby provide a damping performance of the particle impact damper on the printed circuit board;
• and
• the particle impact damper is coupled with the printed circuit board.

A particle impact damper and a printed circuit board, comprising:

• a housing coupled with the printed circuit board having a plurality of separate elongate shaped chambers, each elongate shaped chamber having a first end surface, a second end surface opposite the first end surface, and an open cavity extending between the first and second end surfaces;
• and
• a plurality of particles, each of the a plurality of particles disposed in only one of the a plurality of elongate shaped chambers, the elongate shaped chamber having an effective diameter that is greater than an effective diameter of the particle and having a length that is longer than a length of the particle;
• wherein each of the a plurality of particles are configured to move unconstrained within the one or more elongate shaped chambers substantially only unidirectionally between the first end surface and the second end surface, to dampen a vibration force applied to the particle impact damper or a component attached to the particle impact damper as each of the plurality of particles strikes the first end surface or the second end surface.