Patents by Inventor John T. Price

John T. Price 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: 4957644
    Abstract: This invention discloses a new ferrofluid and the use of ferrofluids in magnetically controllable couplings such as electromagnetic clutches and brakes. The new ferrofluid is comprised of a stable suspension of magnetizable particles having a size of at least one micron, a fluid carrier and a complexing agent. The complexing agent maintains the magnetizable particles in suspension within the carrier fluid.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: September 18, 1990
    Inventors: John T. Price, Jurgen M. Kruse
  • Patent number: 4849120
    Abstract: This invention disclosed a new ferrofluid and the use of ferrofluids in magnetically controllable couplings such as electromagnetic clutches and brakes. The new ferrofluid is comprised of a stable suspension of magnetizable particles having a size of at least one micron, a fluid carrier and a complexing agent. The complexing agent maintains the magnetizable particles in suspension within the carrier fluid.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: July 18, 1989
    Inventors: John T. Price, Jurgen M. Kruse