Drive device

Machine element or mechanism – Gearing – Directly cooperating gears

Reexamination Certificate

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Details

C074S089230

Reexamination Certificate

active

07992460

ABSTRACT:
A drive device for a hatch of a motor vehicle, wherein a spindle drive is provided with a threaded spindle and a spindle nut mounted on the threaded spindle, by which drive the first fastening element and the housing tube can be driven axially relative to each other. The spindle drive can be rotatably driven by an electric motor. The threaded spindle has a thread with a lead that changes over the length of the threaded spindle.

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