Patent ID: 6719266
Filing Date: 2004-04-13
Classification: F02M,H01L

Abstract:
An apparatus for adjusting a preload of a piezoelectric device having first and second opposed surfaces and a peripheral edge extending therebetween, comprising:a clamping device configured to engage the first and second opposed surfaces of the piezoelectric device proximate the peripheral edge and operable to apply a variable clamping force to the piezoelectric device; and a load device operatively engaging said clamping device and operable to vary the applied clamping force to adjust the reload of the piezoelectric device, wherein the clamping device comprises: a first clamping member operable to engage the first surface of the piezoelectric device; and a second clamping member mounted for movement relative to the first clamping member and operable to engage the second surface of the piezoelectric device, and wherein the first clamping member comprises: a first upstanding wall adapted to surround at least a portion of the peripheral edge of the piezoelectric device; and a first support flange extending from the first upstanding wall and adapted to engage the first surface of the piezoelectric device proximate the peripheral edge.