US 12,000,449 B2
Tri-adaptive apparatus for shock and vibration protection
Noemi Bonessio, Berkeley, CA (US)
Assigned to METAseismic, Inc., Berkeley, CA (US)
Filed by METAseismic, Inc., Berkeley, CA (US)
Filed on Jun. 7, 2023, as Appl. No. 18/206,758.
Claims priority of provisional application 63/349,868, filed on Jun. 7, 2022.
Prior Publication US 2023/0392668 A1, Dec. 7, 2023
Int. Cl. F16F 13/04 (2006.01)
CPC F16F 13/04 (2013.01) [F16F 2228/066 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A tri-adaptive apparatus configured for functioning as a dynamic force isolation and dampening metamaterial that reduces the transmission of dynamic forces between a dynamic force source and an at least one object, the apparatus comprising:
an at least one unit cell comprising:
a pair of opposing first and second cell plates;
an outer surface of the first cell plate positioned in direct or indirect abutting contact with the dynamic force source;
an outer surface of the second cell plate positioned in direct or indirect abutting contact with the at least one object;
an at least one nonlinear spring extending between an inner surface of each of the first and second cell plates along a substantially nonlinear path and configured for biasing the unit cell into a neutral state;
an at least one flexible restrainer engaged with the inner surface of one of the first or second cell plates and extending a distance perpendicularly therefrom, such that the at least one restrainer is positioned proximal to, but spaced apart from, each of the at least one spring and the inner surface of the other of the first or second cell plates when the unit cell is in the neutral state; and
the at least one spring configured for expanding and contracting laterally in the direction of the at least one restrainer upon being subjected to dynamic forces from the dynamic force source, thereby bringing the at least one spring into frictional sliding contact with the at least one restrainer and forming an at least one energy dissipative dashpot therebetween;
whereby, the at least one spring, restrainer and dashpot are able to transfer dynamic force energy mutually between one another while deforming mechanically in response to the dynamic forces transmitted by the dynamic force source.