Patents by Inventor H. Carl Walther

H. Carl Walther 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).

  • Method for lubricating a sootblower
    Patent number: 7544646
    Abstract: A method of lubricating a sootblower comprising use of an oil or grease that is thermally stable at temperatures of at least 160° C. Sootblower components which can be lubricated include lance support bearings, gears, chains, seals, and shaft bearings. The oil or grease can be an ester, silicone, or halogenated oil or grease including perfluoropolyether or perfluoroalkyl ether, a fluorosilicone, a polytrifluorochloroethylene, derivatized perfluoropolyethers, such as fluoroether triazines, and mixtures of two or more thereof.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 9, 2009
    Inventors: Thomas Michael Band, H. Carl Walther, Jon Lee Howell
  • Composition comprising halogenated oil
    Patent number: 6528457
    Abstract: A composition that can be used as lubricant for high electric field including spark plug boots is disclosed. The composition comprises, or is produced by combining, a halogenated oil such as a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations of two or more thereof; a basic thickener; and optionally an additional thickener in which the basic thickener is a metal hydroxide, a metal salt, an ammonium salt, or combinations of two or more thereof. The optional additional thickener is polytetrafluoroethylene, talc, silica, clay, boron nitride, metal soaps, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof. Also provided is a spark plug boot that comprises the composition applied thereto.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 4, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jon L. Howell, H. Carl Walther, Gregory A. Bell
  • Composition comprising halogenated oil
    Publication number: 20030013617
    Abstract: A composition that can be used as lubricant for high electric field including spark plug boots is disclosed. The composition comprises, or is produced by combining, a halogenated oil such as a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations of two or more thereof; a basic thickener; and optionally an additional thickener in which the basic thickener is a metal hydroxide, a metal salt, an ammonium salt, or combinations of two or more thereof. The optional additional thickener is polytetrafluoroethylene, talc, silica, clay, boron nitride, metal soaps, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof. Also provided is a spark plug boot that comprises the composition applied thereto.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 16, 2003
    Inventors: Jon L. Howell, H. Carl Walther, Gregory A. Bell