Patents by Inventor Gerd Freydank

Gerd Freydank 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).

  • Patent number: 7964806
    Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19), a bubble level (20), which includes a container (21) that is partially filled with a liquid (22) while forming a gas bubble (23), and circuit component or program routine in the digital signal processing unit (18) for detecting a displacement of the gas bubble (23). An additional circuit component or program routine detects the diameter of the gas bubble (23). The diameter of the gas bubble changes due to vertical vibrations of the scale. The signal from the measuring sensor (1 . . . 16) falsified by vibrations can thus be corrected by the digital signal processing unit (18) by calculation, making use of the diameter signal.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: June 21, 2011
    Assignee: Sartorius AG
    Inventors: Gerd Freydank, Winfried Graf, Christian Oldendorf
  • Patent number: 7906737
    Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19) and an inclinometer (40). The inclinometer derives a signal for the tilt of the scale from the difference of at least two signals. The digital signal processing unit (18) is provided with an additional circuit component or program routine that adds the two signals and, by way of this cumulative signal, corrects the vibration-distorted signal of the measuring sensor (1 . . . 16). A plurality of inclinometers enables the simultaneous detection of momentary gravitational acceleration. For example, in an electric bubble level, the gas bubble moves out of place when tilted and the diameter of the gas bubble changes when the gravitational acceleration changes. The scale thus provides an additional signal for correcting the influence of disturbances with minimum complexity.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: March 15, 2011
    Assignee: Sartorius AG
    Inventors: Gerd Freydank, Winfried Graf, Christian Oldendorf
  • Patent number: 7818891
    Abstract: An inclination sensor is provided having a level that has a liquid and a gas bubble under a covering glass in a housing. A light source is arranged above the covering glass. The inclination sensor can be used to determine a direction and degree of an inclination with high accuracy and which is suitable for automatically aligning an apparatus provided with the inclination sensor. An arrangement is provided that has at least two light receivers arranged above the covering glass such that the light that is emitted from the light source and, in the case of a centered gas bubble, is scattered on the surface of the covering glass coming in contact with the gas bubble can be detected by the at least two light receivers. Different quantities of light can be detected by the light receivers when the gas bubble is not centered, and the light source and the light receivers are arranged on a chip substrate.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: October 26, 2010
    Assignee: Sartorius AG
    Inventors: Dieter Roemhild, Gerd Freydank, Herbert Rink, Olaf Brodersen, Ralf Mueller
  • Publication number: 20090301790
    Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19), a bubble level (20), which includes a container (21) that is partially filled with a liquid (22) while forming a gas bubble (23), and circuit component or program routine in the digital signal processing unit (18) for detecting a displacement of the gas bubble (23). An additional circuit component or program routine detects the diameter of the gas bubble (23). The diameter of the gas bubble changes due to vertical vibrations of the scale. The signal from the measuring sensor (1 . . . 16) falsified by vibrations can thus be corrected by the digital signal processing unit (18) by calculation, making use of the diameter signal.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 10, 2009
    Applicant: Sartorius AG
    Inventors: Gerd FREYDANK, Winfried GRAF, Christian OLDENDORF
  • Publication number: 20090293297
    Abstract: An inclination sensor is provided having a level that has a liquid and a gas bubble under a covering glass in a housing. A light source is arranged above the covering glass. The inclination sensor can be used to determine a direction and degree of an inclination with high accuracy and which is suitable for automatically aligning an apparatus provided with the inclination sensor. An arrangement is provided that has at least two light receivers arranged above the covering glass such that the light that is emitted from the light source and, in the case of a centered gas bubble, is scattered on the surface of the covering glass coming in contact with the gas bubble can be detected by the at least two light receivers. Different quantities of light can be detected by the light receivers when the gas bubble is not centered, and the light source and the light receivers are arranged on a chip substrate.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 3, 2009
    Inventors: Dieter ROEMHILD, Gerd FREYDANK, Herbert RINK, Olaf BRODERSEN, Ralf MUELLER
  • Publication number: 20090242279
    Abstract: An electronic scale having a measuring sensor (1 . . . 16), a digital signal processing unit (18), a digital display (19) and an inclinometer (40). The inclinometer derives a signal for the tilt of the scale from the difference of at least two signals. The digital signal processing unit (18) is provided with an additional circuit component or program routine that adds the two signals and, by way of this cumulative signal, corrects the vibration-distorted signal of the measuring sensor (1 . . . 16). A plurality of inclinometers enables the simultaneous detection of momentary gravitational acceleration. For example, in an electric bubble level, the gas bubble moves out of place when tilted and the diameter of the gas bubble changes when the gravitational acceleration changes. The scale thus provides an additional signal for correcting the influence of disturbances with minimum complexity.
    Type: Application
    Filed: June 12, 2009
    Publication date: October 1, 2009
    Applicant: Sartorius AG
    Inventors: Gerd FREYDANK, Winfried Graf, Christian Oldendorf
  • Patent number: 7526870
    Abstract: An inclination sensor is provided having a level which has a liquid and a gas bubble in a housing under a covering glass, wherein a light source is arranged above the covering glass. The invention is based on the object of providing an inclination sensor which can be used to determine the direction and degree of an inclination with high accuracy and which is suitable for automatic orientation of an apparatus provided with such an inclination sensor. The object is achieved according to the invention by virtue of an inclination sensor in which at least two light receivers are arranged above the covering glass such that light, which is emitted by the light source and undergoes total internal reflection at the gas bubble when the gas bubble is centered, can be detected by means of these at least two light receivers, wherein different quantities of light can be detected by means of these light receivers when the gas bubble is not centered, and the light receivers are arranged on a chip substrate.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: May 5, 2009
    Assignee: Sartorious AG
    Inventors: Franz Klapper, Herbert Rink, Gerd Freydank
  • Publication number: 20080235966
    Abstract: An inclination sensor is provided having a level which has a liquid and a gas bubble in a housing under a covering glass, wherein a light source is arranged above the covering glass. The invention is based on the object of providing an inclination sensor which can be used to determine the direction and degree of an inclination with high accuracy and which is suitable for automatic orientation of an apparatus provided with such an inclination sensor. The object is achieved according to the invention by virtue of an inclination sensor in which at least two light receivers are arranged above the covering glass such that light, which is emitted by the light source and undergoes total internal reflection at the gas bubble when the gas bubble is centered, can be detected by means of these at least two light receivers, wherein different quantities of light can be detected by means of these light receivers when the gas bubble is not centered, and the light receivers are arranged on a chip substrate.
    Type: Application
    Filed: May 15, 2008
    Publication date: October 2, 2008
    Inventors: Franz Klapper, Herbert Rink, Gerd Freydank