Patent ID: 7013547

Claim:
A method for the production of curved spring strip sections comprising the steps of: bending a spring strip formed of spring strip sections disposed sequentially to form one piece between three support points spaced apart in the direction of spring strip travel and impinging alternately in sequence on one of the two sides of the spring strip; reverse bending at a subsequent fourth support point by a comparatively lesser degree of curvature in the opposite direction; controlling a spring strip section subsequently cut from the spring strip; configuring one of the three support points for spring strip bending and the fourth support point for spring strip reverse bending to be adjustable perpendicular to the spring strip in the direction of strip thickness; controlling perpendicular adjustments of the support points relative to the spring strip by predetermined programs, which takes into account at least one of changing material thickness within the spring strip sections in the direction of spring strip travel and changing radii of curvature and radii of reverse curvature in the direction of spring strip travel; and configuring the third support point adjacent the fourth support point to be adjustable perpendicular to the spring strip in the direction of strip thickness.