Abstract: An accelerometer comprises a housing including a mass-supporting frame and a mass supported on the frame by a pair of outer spring member aligned along a first axis. The mass may comprise an outer mass connected to the pair of outer spring members and an inner mass connected to the outer mass by a number of inner spring members, the inner spring members aligned along one or more axes, which form a plane which the axis of the outer spring members also may be aligned. Also provided is means for detecting rotation of the mass and translation of the inner mass.

Abstract: An accelerometer comprises a housing including a mass-supporting frame and a mass supported on the frame by a pair of outer spring member aligned along a first axis. The mass may comprise an outer mass connected to the pair of outer spring members and an inner mass connected to the outer mass by a number of inner spring members, the inner spring members aligned along one or more axes, which form a plane which the axis of the outer spring members also may be aligned. Also provided is means for detecting rotation of the mass and translation of the inner mass.

Abstract: A micromechanical acceleration switch of silicon or similar materials, comprising a resilient electrode element, a proof mass, a housing and a spring element connecting the electrode element and the proof mass to the housing. The electrode element is mechanically connected adjacent to the proof mass. The proof mass has its centre of gravity located at a given distance from the axis through the spring element, so that when the proof mass is pivoting about the axis of the spring element in response to an externally applied acceleration, with a component in a direction parallel with the first axis. The electrode element also pivots about this axis. The pivot angle being essentially proportional to the magnitude of this component of the acceleration.