Patents by Inventor Manfred Dennhoven

Manfred Dennhoven 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: 4980548
    Abstract: A position sensor for supplying digital signals corresponding to the position of a movable part in non-contacting, reliable fashion. A number of individual electrodes are applied on a substrate with a layer of a-Si:H applied thereon. A common, large-area collector electrode is applied over the a-Si:H layer. A light beam is moved over the collector electrode to activate a predetermined combination of photosensitive pixels which may be photodiodes or photoresistors. These pixels are situated between the individual electrodes and the common collector electrode. The output signals of the photodiodes are in the form of a digital code that characterizes the location of the light beam.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: December 25, 1990
    Assignee: Heimann GmbH
    Inventors: Manfred Dennhoven, Frank Fichtner, Mario Gauer, Enno Holzenkaempfer, Ulrich Traupe
  • Patent number: 4775894
    Abstract: An image sensor line for reading optical information is constructed of a number of identical modules disposed side-by-side. Each module includes a row of sensors, such as optoelectrical transducers, and a signal processing circuit. The sensors and signal processing circuit in combination form an integrated circuit module. Sensor lines of arbitrary length can be constructed from such modules.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: October 4, 1988
    Assignee: Heimann Wiesbaden
    Inventors: Ulrich Traupe, Manfred Dennhoven
  • Patent number: 4775895
    Abstract: An image sensor module for reading optical information on an original and converting the information into electrical signals, has a row of opto-electrical sensors, each sensor having associated processing circuitry integrated therewith in the module. The drive module functions as the substrate for the sensors as well, which are separated from the substrate by an insulator layer, having openings therein for making electrical connection between the substrate and the sensor.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: October 4, 1988
    Assignee: Heimann GmbH
    Inventors: Ulrich Traupe, Manfred Dennhoven, Bernd Heimann
  • Patent number: 4216499
    Abstract: A baggage inspection system utilizing fluoroscopy of baggage pieces and the like, employing an X-Ray flash unit, a television pick-up unit for scanning the X-Ray image, storage of the television image and subsequent image reproduction by a television monitor, in which, in accordance with the invention, the memory is a digital solid state memory for the digital storage of a half frame, of an interlaced video frame of the television pick-up unit, with a capacity of 6 to 8 bits per image-point of the image signal to be stored.
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: August 5, 1980
    Assignee: Heimann GmbH
    Inventors: Claus Kunze, Manfred Dennhoven
  • Patent number: 4210811
    Abstract: An apparatus for inspecting or screening articles, such as closed luggage and parcels, having a moveable shield to enclose selectively a monitoring duct area in which the articles are placed for screening by X-ray or similar radiation. The shield moves in a fixed housing (which may in turn be mobile) on wheels. A linear drive motor has a stator fixed in the bottom of the housing. The shield carries a rail electromagnetically reactable directly with the stator. Proximity switches in the housing activated by a magnet on the shield control the travel of the shield. A switch located between the end of travel switches may be employed to vary the speed of the linear motor to provide quick, safe cycling of the apparatus.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: July 1, 1980
    Assignee: Heimann GmbH
    Inventors: Manfred Dennhoven, Claus Kunze
  • Patent number: 4139771
    Abstract: A luggage inspection apparatus utilizing fluoroscopic examination in conjunction with an X-ray generator, with the fluoroscopic picture being received by a TV camera, the video signals of which are supplied to an intermediate store for ultimate supply to a TV monitor, the camera containing an AC line-coupled pulse generator for synchronizing the camera and the X-ray flash generator, which pulse generator is electrically interconnected with a synchronizing unit which, upon the initiating of a starting pulse, thus likewise synchronously triggers the X-ray flash generator with respect to the AC supply line.
    Type: Grant
    Filed: January 16, 1976
    Date of Patent: February 13, 1979
    Assignee: Heimann GmbH
    Inventors: Manfred Dennhoven, Claus Kunze, Rainhard Kuehn
  • Patent number: 4047035
    Abstract: A baggage inspection apparatus utilizing an X-ray generator for fluoroscopic examination of luggage and the like in which an X-ray detector is disposed in the beam path of the X-ray generator, operative to control switch means for switching off the high voltage of the X-ray beam generator in the event the intensity and/or duration of the X-ray radiation exceeds a predetermined value.
    Type: Grant
    Filed: January 6, 1976
    Date of Patent: September 6, 1977
    Assignee: Heimann GmbH
    Inventors: Manfred Dennhoven, Claus Kunze, Rainhard Kuehn