Patent ID: 6863832
Filing Date: 2005-03-08
Classification: B81B,B81C,G01C,G01P

Abstract:
1. A method for producing a torsion spring with low torsional compared to transverse stiffness in the lateral and vertical directions as part of a micromechanical torsion spring/mass system, from two wafers or wafer composites, comprising the steps of: a) producing a spring extending over the entire thickness of said wafer or wafer composite, said spring having a V-shaped cross section that is laterally delimited by [111] planes on at least one side edge region of each wafer or wafer composite, by anisotropic wet-chemical etching; then b) rotating said two wafers or wafer composites through 180°; and then c) joining said two wafers or wafer composites to one another oriented in a mirror-image fashion with respect to one another so that an overall X-shaped torsion spring crosssection is formed in the region of the two V-shaped spring cross sections.