| 摘要 |
<p>The device raises and lowers a vehicle window pane solely by continuous path control without forced guidance. The device has a number of drive units which are operated by a continuous-path control unit with a programmable memory and which drive the vehicle window pane along a theoretical path over a barrel-shaped curved enveloping surface. The curved surface follows the external contours of the vehicle. The drive units used are preferably linear drives, which are controlled in an appropriate manner using trajectories projected onto the co-ordinate planes.</p> |
