Abstract: According to the present invention, underneath a vehicle power window button face a pair of cams are sized such that depression of the face a first distance causes momentary window movement whereas depression of the face a second distance causes express window movement. In the alternative, bumpers for receiving the cams and causing switch actuation can be sized or contoured such that depression of the face a first distance causes momentary window movement whereas depression of the face a second distance causes express window movement.

Abstract: An inductive proximity switch is provided which comprises a coil, means for supplying the coil with periodic transmitting current pulses, and means for processing signals which correspond to voltages induced in said coil after the end of a transmitting current pulse by the decaying current which previously flows in the detected body due to the voltage induced therein by the transmitting current pulse. In order to improve the robustness of the proximity switch so that it is suitable for durable use in an aggressive environment, the coil, the means for supplying the coil with a periodical transmitting current, and the signal processing means are arranged in a cylindrical housing which is closed on the side of the active surface of the proximity switch and consists of a metal which is not ferromagnetic and whose specific electric resistance is relatively high.

Abstract: An inductive proximity switch includes a coil that is supplied with periodic transmitting current pulses. Signals which correspond to voltages induced in the coil after the end of a transmitting current pulse by the decaying current which previously flows in the detected body due to the voltage induced therein by the transmitting current pulse are then processed. The coil is supplied with transmitting current pulses whose direction alternates periodically. The current flow pattern is such that in the first half of a period of the current supplied to the coil, the transmitting current delivered to the coil flows in a first direction and substantially only during a first interval which is shorter than one half of the period of the transmitted pulses. The transmitted current subsequently decays during a time interval and is negligibly small during the remaining time of the first half of the period.