Abstract: In a device for the electric measurement of the level of a liquid in a container, particularly in the gasoline tank of a vehicle, a support developed as protective tube of a conductor foil is fastened for swinging against the force of a spring (14 and 21) to the top of the container. In order to be able to arrange the support even in containers in which the point of attachment of the support is lower than the highest level to be detected, the support is subdivided into three approximately rigid sections, (2, 3, 5) each two sections (3, 5) being articulated in the manner of a toggle joint to each other and being under spring action. In this way the outermost section (3) is swung, substantially independently of the inside height of the container, on the one end towards the bottom (4) and on the other end towards the top (1) of the container.

Abstract: A device for unlocking and locking of doors, particularly of motor vehicle doors, with a pump delivering low pressure and high pressure, the outputs of which are connectable via a two-way valve which is actuatable upon each unlocking and locking operation, respectively, with pneumatic positioning elements which act on the door locking mechanism and with electrical switches for switching the pump respectively on and off via a reversing switch, the electrical switches being actuatable by means of a door key and arranged in the several, lockable doors, the reversing switch being able to be switched-over by means of a delayed-responding actuating means. An additional pneumatic positioning element is provided as the delayed-responding actuating means, which additional positioning element is connected to an output of the two-way valve. The two-way valve and the reversing switch are actuatable by means of the additional positioning element.