Patents by Inventor Charles P. Ledergerber

Charles P. Ledergerber 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: 4175551
    Abstract: A massage device which utilizes the combination of electroneurological stimulation and mechanical massage for medical treatment of pain. The apparatus includes a housing having a massage head formed from a plurality of elongate rollers, connected to the electrical output of a pulse-generating circuit. The rollers form a mechanical massaging head, while the electrical pulses stimulate underlying nerves to block or reduce pain. A second or ground electrode is provided by an expansion band which can be easily slipped on an ankle or wrist and is connected to the main electrical circuit by a flexible electrical cord. The pulse-generating circuit includes a pair of switches for selecting a discrete voltage amplitude over a varying predetermined range, and a light-emitting diode to indicate operation of the pulse-generating circuit. Also included in the case or housing is a ball electrode for massaging and treating particular body points known as acupuncture or trigger points.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: November 27, 1979
    Assignee: Electromed Incorporated
    Inventors: Irnee J. D'Haenens, Charles P. Ledergerber
  • Patent number: D254268
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: February 19, 1980
    Assignee: Electromed Incorporated
    Inventors: Irnee J. D'Haenens, Charles P. Ledergerber