Patents by Inventor Robert Herman Luetzow

Robert Herman Luetzow 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: 6509734
    Abstract: A magnetic rotational position sensor senses each rotational position of a control shaft about a first rotational axis over a definable range of rotation of the control shaft. The magnetic rotational position sensor includes a magnetic circuit, a magnetic flux sensor, a drive circuit, and an output signal amplifier. The magnetic circuit encloses an equally balanced magnetic field, and is adjoined to the control shaft to synchronously rotate the magnetic field about a second rotational axis. The magnetic flux sensor is disposed within the magnetic field to sense each rotational position of the control shaft as the control shaft is rotated about the first rotational axis over the definable range of rotation. The drive circuit is operable to generate a constant current drive signal and a constant voltage drive signal.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: January 21, 2003
    Assignee: Wabash Technologies, Inc.
    Inventor: Robert Herman Luetzow
  • Patent number: 6459261
    Abstract: A magnetic incremental motion detection system for outputting a plurality of voltage and/or current signals in digital form wherein the voltage and/or current signals are a collective representation of any incremental rotational, linear, or pivotal movement of an object. A target of the system is adjoined to an object to synchronously move with the object. A plurality of indications are adjoined to the target, and uniformly and serially disposed along an area of a surface of the target. The system further comprises one or more magnetic sensing devices spatially positioned from the area of the surface to define air gap areas therebetween. Each of the magnetic sensing devices are operable to output a digital signal in response to a synchronous movement of the target with the object. The outputted digital signals have the same duty cycle, and are consistently out of phase with each other by the same degree.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: October 1, 2002
    Assignee: Wabash Technologies, Inc.
    Inventors: Robert Herman Luetzow, Kenneth Brown
  • Patent number: 6356076
    Abstract: A magnetic incremental motion detection system for outputting a plurality of voltage and/or current signals in analog or digital form wherein the voltage and/or current signals are a collective representation of any incremental rotational, linear, or pivotal movement of an object. A target of the system is adjoined to an object to synchronously move with the object. A plurality of indications are adjoined to the target, and uniformly and serially disposed along an area of a surface of the target. The system further comprises one or more magnetic sensors spatially positioned from the area of the surface to define air gap areas therebetween. Each of the magnetic sensors are operable to output at least one analog signal in response to a synchronous movement of the target with the object. The outputted analog signals have the same duty cycle, and are consistently out of phase with each other by the same degree.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: March 12, 2002
    Assignee: Optek Technology, Inc.
    Inventor: Robert Herman Luetzow
  • Patent number: 6137288
    Abstract: A magnetic rotational position sensor senses each rotational position of a control shaft about a first rotational axis over a definable range of rotation of the control shaft. The magnetic rotational position sensor includes a magnetic circuit, a magnetic flux sensor, a drive circuit, and an output signal amplifier. The magnetic circuit encloses an equally balanced magnetic field, and is adjoined to the control shaft to synchronously rotate the magnetic field about a second rotational axis. The magnetic flux sensor is disposed within the magnetic field to sense each rotational position of the control shaft as the control shaft is rotated about the first rotational axis over the definable range of rotation. The drive circuit is operable to generate a constant current drive signal and a constant voltage drive signal.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: October 24, 2000
    Inventor: Robert Herman Luetzow