Patents by Inventor Gerhard Hamma

Gerhard Hamma 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: 6124803
    Abstract: The invention is directed to a monitoring device at textile machines which have at least two stations (1a, 1b . . . 1n) which generate electrical status signals in the event of the occurrence of preselected states. According to the invention, storages (IC.sub.1 . . . IC.sub.n) associated individually with the stations generate status signals which are encoded with an identification code in such a way that an evaluation of the status signals in an interrogating and evaluating unit (8) can determine the station which generated the status signal (FIG. 1).
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 26, 2000
    Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH
    Inventor: Gerhard Hamma
  • Patent number: 4073319
    Abstract: Each shuttle of a multiple-shuttle weaving machine is provided with at least one shuttle magnet. A drive unit acts upon each shuttle magnet to effect positive magnetic transport of the shuttle through the length of the shed, without physically contacting the shuttle. The shuttle monitoring device includes a magnetic-field-dependent resistor for each shuttle to be monitored. The magnetic-field-dependent resistor is moved in parallel to and in synchronism with the drive unit for the shuttle and moves in a region where the resistor is influenced by at least one pole of the shuttle magnet. A machine shut-off device is connected to the resistor and is operative for shutting off the drive units for the shuttles of the weaving machine in response to a resistance change of the magnetic-field-dependent resistor indicative of lack of proper shuttle movement.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: February 14, 1978
    Assignee: Mayer & Cie
    Inventors: Adolf Linka, Gerhard Hamma