Patents by Inventor Wolfram Lutke
Wolfram Lutke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7120391Abstract: A field transmitter F, a control device B is in the form of a separately portable unit linked to a field transmitter S1 by radio over short ranges. This eliminates the need to make a direct visit to an inaccessible field transmitter S1 for control purposes. In addition, one control device B can be used to control a plurality of field transmitters S1, S2, S3, A1, A2 by radio. In situ control, which is normally permanently integrated into the field transmitters S1, S2, S3, A1, A2, can be dispensed with.Type: GrantFiled: July 6, 2001Date of Patent: October 10, 2006Assignee: Endress + Hauser GmbH + Co.Inventors: Florian Stengele, Michael Krause, Wolfram Lütke, Vincent de Groot
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Patent number: 7068213Abstract: The invention relates to a microwave-operated level meter with a small blind zone, comprising an antenna for transmitting or for transmitting and receiving microwaves, a microwave generator directly located on said antenna, and a transmitter or transmitter and receiver element pointing into the antenna and directly linked with the microwave generator, said transmitter or said transmitter and receiver element being an extension of the connection.Type: GrantFiled: May 8, 2001Date of Patent: June 27, 2006Assignee: Endress + Hauser GmbH + Co. KGInventors: Roland Müller, Winfried Maier, Igor Getman, Wolfram Lütke
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Publication number: 20040056667Abstract: Level measuring instrument The invention specifies a level measuring instrument operating with microwaves which transmits highly focussed microwaves in the transmission direction during operation and has an antenna (9) with a low space requirement, having a microwave generator (13) for producing microwaves at frequencies of greater than 40 GHz, an antenna (9, 9a) which is powered by the microwave generator (13) and is used to transmit the microwaves in the direction of the filled product, an antenna (9, 9b) which is used to receive microwaves reflected at a filled product surface, and a reception and evaluation circuit (15) which ascertains a transit time for the microwaves and uses this to determine the present level.Type: ApplicationFiled: August 31, 2001Publication date: March 25, 2004Inventors: Wolfram Lutke, Alexander Hardell, Roland Muller
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Patent number: 6691570Abstract: A level measurement device for measuring the level of material inside of a vessel which includes a conductive element, a signal generating unit, and a receiving unit. The conductive element does not come into direct contact with the material being measured. The signal generating unit generates measurement signals which are transmitted along the conductive element. Each of the measurement signals produces an electromagnetic field which travels along the conductive element and is reflected when it reaches the surface of material in the vessel. The reflected electromagnetic field produces an echo signal which travels along said conductive element to the receiving unit. The receiving unit receives the echo signal and determines the level of material in the vessel. The conductive element can be located outside of the vessel.Type: GrantFiled: October 28, 1999Date of Patent: February 17, 2004Assignee: Endress & Hauser GmbH + Co.Inventors: Joachim Neuhaus, Werner Thoren, Wolfram Lütke, Ralf Reimelt
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Patent number: 6640628Abstract: This invention relates to a level-measuring device in which a signal generating device, a sampling device and a transmitting and/or receiving device are optimally connected to one another for various applications and signal shapes. The signal generating device generates both a radio-frequency transmit signal and a sampling control signal for sampling the radio-frequency signal. The sampling device, the signal generating device and the transmitting and/or receiving device being connected by a coupling device which comprises one of: a transformer; at least one line node; a &lgr;/4 coupler and a circulator.Type: GrantFiled: February 7, 2002Date of Patent: November 4, 2003Assignee: Endress + Hauser GmbH + Co. KGInventors: Wolfram Lütke, Bernhard Michalski
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Publication number: 20030168674Abstract: The invention relates to at microwave-operated level meter with a small blind zone, comprising an antenna (15, 35) for transmitting or for transmitting and receiving microwaves, a microwave generator (23, 45, 59, 61, 91) directly located on said antenna (15, 35), and a transmitter or transmitter and receiver element (25, 47, 60, 85, 93) pointing into the antenna (15, 35) and directly linked with the microwave generator (23, 45, 91), said transmitter or said transmitter and receiver element (25, 47, 60, 85, 93) being an extension of the connection.Type: ApplicationFiled: April 7, 2003Publication date: September 11, 2003Inventors: Roland Muller, Winfried Maier, Igor Getman, Wolfram Lutke
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Patent number: 6606904Abstract: A filling level gage operating with microwaves, for measuring a filling level of a filling material (5) in a container (1), is provided which functions with a single antenna (7) constructed as simply as possible, and in which a minimum distance required for measurement between the filling material (5) and the antenna (7) is as small as possible, having a microwave generator (9), and an antenna (7) with planar antenna structure, which is used to transmit the microwaves in the direction of the filling material (5) and to receive microwaves reflected from a filling material surface, in which the planar antenna structure has at least two transmission and/or reception elements (11, 13, 33, 35, 37, S, E).Type: GrantFiled: August 8, 2001Date of Patent: August 19, 2003Assignee: Endress + Hauser Gmbh + Co.Inventors: Roland Müller, Wolfram Lütke
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Publication number: 20020095987Abstract: The invention proposes a level-measuring device in which a signal generator device, a sampling device and a transmitting and/or receiving device are optimally connected to one another for various applications and signal shapes.Type: ApplicationFiled: February 7, 2002Publication date: July 25, 2002Applicant: EndressGmbH+Co.KGInventors: Wolfram Lutke, Bernhard Michalski
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Publication number: 20020040596Abstract: A filling level gage operating with microwaves, for measuring a filling level of a filling material (5) in a container (1), is provided which functions with a single antenna (7) constructed as simply as possible, and in which a minimum distance required for measurement between the filling material (5) and the antenna (7) is as small as possible, having a microwave generator (39), and an antenna (7) with planar antenna structure, which is used to transmit the microwaves in the direction of the filling material (5) and to receive microwaves reflected from a filling material surface, in which the planar antenna structure has at least two transmission and/or reception elements (11, 13, 33, 35, 37, S, E).Type: ApplicationFiled: August 8, 2001Publication date: April 11, 2002Applicant: Endress + Hauser GmbH + Co.Inventors: Roland Muller, Wolfram Lutke
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Publication number: 20020004370Abstract: For a field transmitter F, the control device B is in the form of a separately portable unit linked to the field transmitter S1 by radio over short ranges. This eliminates the need to make a direct visit to an inaccessible field transmitter S1 for control purposes. In addition, one control device B can be used to control a plurality of field transmitters S1, S2, S3, A1, A2 by radio. In situ control, which is normally permanently integrated into the field transmitters S1, S2, S3, A1, A2, can be dispensed with.Type: ApplicationFiled: July 6, 2001Publication date: January 10, 2002Inventors: Florian Stengele, Michael Krause, Wolfram Lutke, Vincent de Groot
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Patent number: 6229476Abstract: A liquid level meter is provided for measuring a level of a liquid (1) in a container (3), which meter measures acceptably in the case of liquids with low dielectric constants, and the installation and maintenance of which are simple and cost effective. This meter comprises an electronic circuit (13), which generates electromagnetic signals in operation, a conductor (7), which projects into the container (3), along which a float (11, 11a, 11b, 11c, 11d, 11e) moves along with the level, which has at least one segment reflecting electromagnetic signals, an injector (9), which transmits the signals from the circuit (13) to the conductor (7), which conductor (7) leads the signals into the container (3) and leads out a signal reflected at the float (11) and a receiving and evaluating circuit (15), which receives the reflected signals, which determines a travel time of the signals and which ascertains the level from the travel time.Type: GrantFiled: November 22, 1999Date of Patent: May 8, 2001Assignee: Endress+ Hauser GmbH+ Co.Inventors: Wolfram Lütke, Joachim Neuhaus, Ralf Reimelt, Werner Thoren