Patent ID: 9255436
Filing Date: 2016-02-09
CPC Classification: E05F,E05Y,Y10T

Claim Text:
1. A spindle drive for the motorized adjustment of an adjustment element of a motor vehicle, the spindle drive comprising: a first drive portion on a spindle side and a second drive portion on a spindle nut side of the spindled drive, in which the drive portions are able to be adjusted relative to one another in a linear manner for producing drive movements between a retracted position and an extended position; and a spring arrangement which pretensions the two drive portions in the extended position; wherein a predetermined rupture point is provided in the spindle drive, the predetermined rupture point configured to fracture at a predetermined critical load, wherein the adjustment element is manually adjustable, wherein the critical load is a predetermined critical tensile load acting via the coupling means on the spindle drive in the direction of the extended position, wherein the predetermined critical tensile load is less than a tensile load at which any other of the remaining components of the drive train of the spindle drive fractures, and wherein the predetermined rupture point is located outside of the flux of force of the spring arrangement, such that the flux of force of the pretensioning force produced by the spring arrangement never extends over the predetermined rupture point.