Wilhelm Jung, Karl Rau: Apparatus for capacitive filling-level measuring, particularly in a motor vehicle tank. VDO Adolf Schindling, Eric P Schellin, October 27, 1981: US04296630 (29 worldwide citation)

An apparatus for measuring the level of fluid in a container by the use of measuring electrodes forming a measuring condenser, and compensation electrodes forming a compensation condenser by which the effect of various dielectric constants of the medium upon the measuring result can be compensated i ...

Karl Rau, Martin Haub: Liquid-level transmitter with bell jar housing for gasoline tanks. VDO Adolf Schindling, Martin A Farber, July 30, 1985: US04532491 (25 worldwide citation)

In a liquid-level transmitter having a swingable support lever (3) which bears a float (7) and a variable electrical resistor (9) actuated thereby, the variable resistor (9) is surrounded by a bell-shaped structural part (1) which is open towards the bottom but otherwise closed. In this way, as in t ...

Horst Schlick, Karl Rau: Liquid level measuring device. January 22, 1980: US04184370 (18 worldwide citation)

A liquid level measuring device for measuring the liquid level in a container, includes a fastening member for holding the device in a container, and a support with a lower end portion or prop extending into engagement with the container bottom. The support carries a liquid level sensing member and ...

Karl Rau: Liquid level indicating device. VDO Adolf Schindling, Otto John Munz, February 13, 1979: US04139750 (16 worldwide citation)

A liquid level indicating device for indicating a predetermined liquid level in a container includes a mounting member mounted on the container, a float movable with the level of liquid in the container and actuating an electrical switch when the float is at the predetermined liquid level in the con ...

Horst Schlick, Karl Rau, Alfred Wipfler, Joachim Lueg Althoff: Electric door lock for motor vehicles. VDO Adolf Schindling, Otto John Munz, June 9, 1981: US04272112 (14 worldwide citation)

An apparatus is disclosed for electrically locking the doors of motor vehicles, wherein at least one motor is supported in a driver door and the motor is coupled with a lock mechanism by means of a connecting element, with a first switch coupled with the motor to be actuated thereby and a second swi ...

Karl Rau: Suction device. VDO Adolf Schindling, Martin A Farber, April 16, 1985: US04510968 (4 worldwide citation)

A suction device for a fuel feed unit in which the suction device has a rigid suction tube on which a suction head is arranged. The suction head is formed as a conically widening elastic bellows having a large suction opening which faces the bottom with a screen arranged in the opening. As a result ...

Karl Rau, Heinz Kalk, Gerhard Metzger: Apparatus for electrically measuring the level of a liquid in a container, particularly in the gasoline tank of a vehicle. VDO Adolf Schindling, Martin A Farber, January 28, 1986: US04566322 (2 worldwide citation)

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 ...

Helmut Harth, Karl Rau, DE, Helmar R Wagner: Dental preparations containing orotic acid. Blendax Werke R Schneider & Co Mainz Federal Republic, Arthur G Connolly, Rudolf E Hutz, September 5, 1972: US3689638 (2 worldwide citation)

A dental preparation for the care of the mouth which exerts a refreshing and stimulating action on the mucous membranes of the mouth and the gum contains uracil-4-carboxylic acid and/or its inorganic and organic salts, optionally with a solubilizer. 3 Claims, No Drawings