Patent ID: 7009835
Filing Date: 2006-03-07
Classification: G11B

Abstract:
1. An energy dissipative element for use in protecting a hosted device from deleterious effects of mechanical shocks and vibrations, the energy dissipative element comprising: a closed envelope formed of an elastic, resilient wall and enclosing an internal volume; a porous body of elastic material contained within the internal volume of said closed envelope, wherein said body defines a network of cells interconnected through cell orifices suitably configured for passing viscous liquid between cells; and a viscous liquid contained within said envelope and filling at least a portion of said network of interconnected cells, wherein under compression or expansion of the porous body, said viscous liquid flows through said cell orifices and thereby dissipates energy resulting from an external force applied against said elastic wall; and a compressible gas occupying a portion of the internal volume of the envelope.