Patent ID: 7484257

Claim:
Electromechanically adjustable support system for the cushions of a piece of furniture of the type including a minimum of two mutually adjustable support sections, the adjustable support system, comprising: a) an electromechanical furniture drive mechanism configured for adjusting the support sections relative to one another; b) the furniture drive mechanism including a drive unit configured and disposed for being axially moved along a linear axis of travel for tilting a swivel unit, which is functionally connected to an adjustable section of the piece of furniture and can be rotated around a swivel axis; c) the drive unit to remain engaged in the swivel unit at a substantially fixed point along the linear axis of travel throughout the adjustment movement; d) a device being provided and configured for causing the drive unit to remain engaged in the swivel unit at the substantially fixed point along the linear axis of travel during the adjustment movement, the device including a cam for the drive unit, and the cam engaging in the drive unit; e) the cam including a circumference, and the circumference of the cam tangentially engaging the linearly moving drive unit at the substantially fixed point along the linear axis of travel throughout the adjustment movement; and f) the swivel axis and the substantially fixed point define an effective length, and the effective length being substantially the same throughout the adjustment movement.