Patents by Inventor Fredrick D. Browne

Fredrick D. Browne 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).

  • Coated abrasive products employing nonabrasive diluent grains
    Patent number: 5011512
    Abstract: A coated abrasive article comprised of a blend of premium abrasive grains and nonabrasive diluent grains adhered to a backing material by a resinous binder. The article has an unexpected abrading efficiency, performing equal to, or superior to, a coated abrasive article containing only premium abrasive grains.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: April 30, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Vernon M. Wald, Richard A. Masson, Fredrick D. Brown, David E. Broberg
  • System for monitoring a liquid entrained in a fluid
    Patent number: 4959965
    Abstract: A monitoring system for detecting contamination of a liquid entrained in a circulating fluid, including a housing having an inlet for receiving the fluid, a reservoir for containing extracted liquid, and an outlet portion disposed in predetermined relationship with the reservoir for venting the fluid from the housing. There is also a separator, which may be formed as part of the housing, for extracting liquid from the fluid and directing the extracted liquid to the reservoir. A probe, disposed in the reservoir, measures an electrical parameter representative of the electrical resistance of the liquid to detect a change in resistivity indicative of contamination of the liquid.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: October 2, 1990
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Fredrick D. Browne, Jacob H. Martin
  • System for monitoring a liquid entrained in a fluid
    Patent number: 4872316
    Abstract: A monitoring system for detecting contamination of a liquid entrained in a circulating fluid, including a housing having an inlet for receiving the fluid, a reservoir for containing extracted liquid, and an outlet portion disposed in predetermined relationship with the reservoir for venting the fluid from the housing. There is also a separator, which may be formed as part of the housing, for extracting liquid from the fluid and directing the extracted liquid to the reservoir. A probe, disposed in the reservoir, measures an electrical parameter representative of the electrical resistance of the liquid to detect a change in resistivity indicative of contamination of the liquid.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: October 10, 1989
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Fredrick D. Browne, Jacob H. Martin