ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,452, issued on March 24, was assigned to PSS BELGIUM NV (Dendermonde, Belgium).
"Shaker" was invented by Edgard Diaz (Dendermonde, Belgium), Giuseppe Di Carlantonio (Dendermonde, Belgium) and David Corynen (Dendermonde, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shaker for transmitting vibrations to an application has a frame; magnet unit that provides a magnetic field in a gap; coil assembly including a voice coil mounted to a former. The former is attached to the frame at a former attachment surface and configured to position the coil in the gap, when the shaker is at rest. The magnet unit moves relative to the coil along an axis wh...