Abstract: A sensing arrangement for sensing a body part in a vehicle opening is described. The arrangement includes a flexible sealing member with two separate electrically conductive members. The two electrically conductive members are interconnected by an electrical oscillator which generates an electric field in the vehicle opening. The arrangement also includes detecting circuitry for detecting a change in the capacitance of the electric field when the body part is in the vicinity of the opening, and for detecting electrical continuity of the first and second electrically conductive members.

Abstract: A sensing assembly for sensing a body part in a window opening or a boot opening is described. The sensing assembly includes first and second electrically conductive members and electrically oscillating means for applying an electrically oscillating signal to the second electrically conductive member. The electric field generated by the applied signal is concentrated in the opening region, and if a body part is within the opening closing movement of the window or hoot is halted.

Abstract: A window glass in a motor vehicle body is slidable in a vertical direction within a window frame by means of an electric motor controlled by "up" and "down" switches. The window glass slides with reference to a window guide channel. The window guide channel incorporates a metal carrier or other electrical conductor which receives the output from electrical oscillating means. If a human hand, or other part of the human body, is present within the frame of the window, when the window is open, and within a predetermined distance from the window guide channel, the resultant capacitive effect will change the output of the oscillator. This output change is detected by a detecting unit and opens a switch. This switch is connected in series with the "up" switch for the window drive motor and thus either stops the motor, if it is driving the window glass upwards, or prevents the window glass from being so driven.