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| Number | Title | Issue Date |
| 7168315 | Level meter The invention relates to a level meter (1) with an outer oscillating body (3) and an inner oscillating body (4), which bodies are coaxially positioned relative to a longitudinal axis (X), with a drive and reception device (7) for exciting... | 01/30/2007 |
| 7146848 | Testing device for seal bodies A device for measuring the permeability of fluids and/or vapors through elastomeric seal bodies comprising a container incorporating a recess for holding a test medium, the recess being covered and closed off by a lid by way of screws fastening the lid to said conta... | 12/12/2006 |
| 7102528 | Device for determining and/or monitoring a predetermined filling level in a container A device for establishing and/or monitoring a predetermined fill level in a container is provided, to indicate the fill level in a container and exhibiting a best possible, optimum fit for an application, which device includes: a mechanical oscillatory structure pla... | 09/05/2006 |
| 7043981 | Device for determining and/or monitoring a predetermined level in a container Disclosed is a device for determining and/or monitoring a predetermined level. The multipurpose inventive device comprises the following: a mechanical oscillating structure which is placed at the same height as the predetermined level, a pot-shaped housing which is ... | 05/16/2006 |
| 6153995 | Water drop detection sensor A water drop detection sensor for detecting water drops W adhering to or present upon a windshield by detecting changes in an amount of reflection light and also for detecting the ambient brightness outside of a car or other vehicle, comprising: a windshi... | 11/28/2000 |
| 5408168 | Device for determining and/or monitoring a predetermined filling level in a container The device comprises at least two oscillation rods that are mounted at a distance from each other on a membrane, the edge of which are connected with a screw insert. A clamping screw is connected with the membrane on the side opposing the oscillation rods... | 04/18/1995 |
| 5243860 | Liquid level measurement The invention relates to apparatus (1) for monitoring the level of a liquid within a vessel (3). The apparatus comprises a surface following sensing head (5) adapted to follow the surface (7) of the liquid. A gauging head (9) is mounted outside the vessel... | 09/14/1993 |
| 5166589 | Level probe for a shaft furnace A probe includes a probe foot which is suspended on a cable or a chain attached to a winding drum mounted in a sealed casing above the furnace and which communicates with the interior of the latter via a vertical sleeve passing through the upper wall of t... | 11/24/1992 |
| 4942351 | System for monitoring a level of material, device therefor and methods of making the same A system for monitoring a level of material held in a confining means, a device therefor and methods of making the same are provided, the system comprising a rotatable reel, an electrically operated motor operatively interconnected to the reel for causing... | 07/17/1990 |
| 4728875 | Method and apparatus for monitoring a liquid level A method and apparatus are provided for monitoring the surface level of a liquid, such as molten metal, by moving first and second sensing electrodes vertically with respect to the surface level of the liquid, positioning the lower portion of the second e... | 03/01/1988 |
| 4527107 | Liquid level measuring apparatus In liquid measuring apparatus, a cable supporting a sensing plate is attached to a drum that is connected via a magnetic clutch with the drive shaft of a servomotor. The servomotor is supported in a pivot mount which is flexibly rotatively connected to th... | 07/02/1985 |
| 4442389 | Apparatus for measuring a metal surface position In an apparatus having a magnetic sensing type metal sensor arranged in spaced relation to a surface of metal under measurement and reciprocable in a predetermined direction, a tracing unit for driving the sensor in accordance with a change in the output ... | 04/10/1984 |
| 4274039 | Servo-amplifier circuit A circuit for a servo-amplifier saves power when the position servo has reached balance. The servo input is a high frequency differential transformer having its armature positioned by mechanical means driven by a servo motor controlled through amplifier c... | 06/16/1981 |
| 4027233 | Contactless inductance pickup for detecting the interface of two media A contactless inductance interface pickup, having within an external housing an auxiliary housing installed, and formed as a pot, with at least the bottom thereof being constructed from a non-magnetic material, and a clearance between the external housing... | 05/31/1977 |
