Patents by Inventor Jan Francis Herbst

Jan Francis Herbst 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).

  • Magnetostrictive composites
    Patent number: 5993565
    Abstract: Composite bodies of magnetostrictive materials of the type RE-Fe.sub.2, where RE is one or more of the rare earth elements, preferably samarium or terbium, can be suitably hot pressed with a matrix metal selected from the group consisting of aluminum, copper, iron, magnesium or nickel to form durable and machinable magnetostrictive composites still displaying appreciable magnetostrictive strains.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: November 30, 1999
    Assignee: General Motors Corporation
    Inventors: Frederick Eugene Pinkerton, Jan Francis Herbst, Tenneille Weston Capehart, Charles Bernard Murphy, Earl George Brewer
  • Magnetostrictive composites
    Patent number: 5985049
    Abstract: Composite bodies of magnetostrictive materials of the type RE-Fe.sub.2, where RE is one or more of the rare earth elements, preferably samarium or terbium, can be suitably hot pressed with a matrix metal selected from the group consisting of aluminum, copper, iron, magnesium or nickel to form durable and machinable magnetostrictive composites still displaying appreciable magnetostrictive strains.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: November 16, 1999
    Assignee: General Motors Corporation
    Inventors: Frederick Eugene Pinkerton, Jan Francis Herbst, Tenneille Weston Capehart, Charles Bernard Murphy, Earl George Brewer
  • Magnetostrictive torque sensor utilizing RFe.sub.2 -based composite materials
    Patent number: 5907105
    Abstract: This invention provides an improvement to magnetostrictive torque sensors giving an output signal indicative of the torque applied about the axis of a shaft where the shaft includes a magnetostrictive ring, attached to or formed as a part of the shaft so that the torque applied to the shaft is applied proportionally to the ring, and the ring consists essentially of novel composites consisting of magnetically hard and highly magnetostrictive rare earth (iron).sub.2 binary compound particles embedded in Cu, Fe, or other suitable metals.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: May 25, 1999
    Assignee: General Motors Corporation
    Inventors: Frederick Eugene Pinkerton, Jan Francis Herbst, Tenneille Weston Capehart, Thomas Arthur Perry, Martin Stephen Meyer