Patents by Inventor Richard C. Sweet

Richard C. Sweet 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 of mounting permanent magnets without organic adhesives
    Patent number: 5015536
    Abstract: A metal shaft is joined to a permanent magnet by a seal formed of a thin layer of a metal on the magnet which forms a bond with the magnet. A layer of a solorable metal provided on the thin layer and a layer of a low melting point solder contacting the metal shaft and layer of solderable metal.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: May 14, 1991
    Assignee: North American Philips Corporation
    Inventors: Richard C. Sweet, Jose M. I. Azevedo, Robert L. Bronnes
  • Mounting hard magnetic material permanent magnets
    Patent number: 4643347
    Abstract: A permanent magnet of a hard magnetic material, such as rare earth-cobalt intermetallic compounds or AlNiCo, is joined to a mounting surface by way of intermediate layers. These layers avoid heating the magnet above the maximum service temperature of the magnetic material, and thus prevent losing the magnetic properties.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: February 17, 1987
    Assignee: North American Philips Corporation
    Inventors: Robert L. Bronnes, Richard C. Sweet, James K. McKinlay
  • Metallized rare earth garnet and metal seals to same
    Patent number: 4615951
    Abstract: A reliable garnet to metal hermetic seal is obtained by metallizing the garnet with successive sputtered layers of tantalum or titanium, molybdenum or tungsten and nickel, followed by soldering or brazing the metallized garnet to a metal member.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: October 7, 1986
    Assignee: North American Philips Corporation
    Inventors: Robert L. Bronnes, James K. McKinlay, Richard C. Sweet, Walter K. Zwicker
  • Metallized rare earth garnet and metal seal to same
    Patent number: 4559280
    Abstract: A reliable garnet to metal hermetic seal is obtained by metallizing the garnet with successive sputtered layers of tantalum or titanium, molybdenum or tungsten and nickel, followed by soldering or brazing the metallized garnet to a metal member.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: December 17, 1985
    Assignee: North American Philips Corporation
    Inventors: Robert L. Bronnes, James K. McKinlay, Richard C. Sweet, Walter K. Zwicker
  • Metallurgical contacts in hermetically sealed glass encapsulated ceramic capacitors
    Patent number: 4446502
    Abstract: An improved hermetically sealed glass encapsulated monolithic ceramic capacitor in which a metallurgical bond between the capacitor termination and the end cap of its lead is effected by means of brazing.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: May 1, 1984
    Assignee: U.S. Philips Corporation
    Inventors: Otmar H. Boser, Richard C. Sweet
  • Beryllium to metal seals and method of producing the same
    Patent number: 4431709
    Abstract: Beryllium to metal seals are produced by forming on a beryllium surface by cathode sputtering a first metal layer from a group of metals including tantalum, niobium, zirconium, hafnium, titanium or vanadium, an intermediate cathode sputtered layer of a refractory metal and outer layer of a readily brazable metal and soldering the readily brazable layer to another metallic body.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: February 14, 1984
    Assignee: North American Philips Corporation
    Inventors: Robert L. Bronnes, Richard C. Sweet, James D. O'Grady