Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Reexamination Certificate
2006-05-16
2006-05-16
Trieu, Van T. (Department: 2636)
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
C340S426270, C340S561000, C340S562000
Reexamination Certificate
active
07046129
ABSTRACT:
A device for detecting an obstacle in the opening range of a movable closure element (13), more particularly an electrically powered window pane (13) or sunroof of a motor vehicle (10), comprises a sensor electrode (20), a base electrode (21) spaced away from the sensor electrode (20), and a control unit (40) connected to the sensor electrode (20) and the base electrode (21). The sensor electrode (20) and the base electrode (21) generate an electric field (F) in the opening range of the closure element (13) and are spaced away at a constant distance from each other in a first operational mode. The control unit (40) detects in the first operational mode a change in capacitance caused by the presence of an obstacle in the electric field (F) and providing at least one control signal (Is, Ip) for a drive (50) powering the closure element (13). The device is characterized by high reliability in operation and availability. The reason for this is that the control unit (40) provides in a second operational mode a control signal (Is) for the drive (50) powering the closure element (13) when the sensor electrode (20) comes into electrical contact with the base electrode (21).
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English language abstract of DE 4320548.
English language abstract of DE 19906562.
English language abstract of DE 19913105.
English language abstract of EP 0638701.
English language abstract of EP 0648628.
English language abstract of EP 1154110.
Kopp Gunther
Regnet Helmut
Harter Secrest & Emery LLP
Metzler Automotive Profile Systems GmbH
Salai Esq. Stephen B.
Shaw Esq. Brian B.
Trieu Van T.
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