Patents by Inventor Ralph Kricker

Ralph Kricker 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).

  • Axially coupled flat magnetic pump
    Patent number: 5332374
    Abstract: An axially coupled magnetic pump having a housing of minimum motor length, including an eddy-free seal sheet interposed between the rotor and stator, and sealing the pump housing outwardly of the rotor. A rotor magnet configuration in conjunction with specific sensor positioning to effect close driving control over the pump.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: July 26, 1994
    Inventors: Ralph Kricker, Sheldon Childs
  • System for indicating the direction and net distance travelled by a medium containing a periodic asymmetrical flux pattern
    Patent number: 4480224
    Abstract: In a system for displaying the net distance travelled by a magnetic recording tape, the tape includes a recorded track having a periodic flux pattern. During each period, the flux pattern includes an asymmetrical pulse characterized by a flux increase during a first length of tape and a flux decrease of the same magnitude during a second and different length of tape. A single flux responsive head detects the pulses when the tape is moved and a differentiating circuit provides a pulse signal whose sense is related to the directions of travel of the tape. The pulse signal is coupled to an up-down counter which drives a display. The display indicates the net distance travelled by the tape.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: October 30, 1984
    Inventor: Ralph Kricker