Back to results
US 5,517,070 AGranted
Drive unit, in particular an electromotive window - lift drive for a motor vehicle
AssigneeSiemens Aktiengesellschaft
InventorKurt Schmidt
Life of this patent
Estimating the term…
Abstract
A drive unit, in which an unattached shaft end of a drive shaft abuts axially against an abutment surface of a housing part. The abutment surface is crown-faced and with respect to the abutting, unsupported and unattached (i.e., free) shaft end and thereby prevents the drive shaft from deflecting eccentrically from radial adjusting forces. Given an eccentric abutment, the abutment surface leads the drive shaft back to its centrical axial position.
Claims9
A drive unit comprising:
- a) a drive shaft having an unattached, overhung-mounted shaft end, said unattached, overhung-mounted shaft end having radial forces acting upon it which bends said drive shaft out of its centrical axial position;
- and
- b) a housing part having a crown-shaped, convex, abutment surface, said abutment surface abutting said unattached, overhung-mounted shaft end of said drive shaft, whereby an abutment of said abutment surface and said unattached, overhung-mounted shaft end results in a force that, given an eccentric abutment, bends said drive shaft back to its centrical axial position.
Dependencies are inferred from the claim text.