Patents by Inventor Louis E. Stark

Louis E. Stark 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).

  • Sleeve repair of degraded nuclear steam generator tubes
    Patent number: 4739916
    Abstract: A sealable multimetallic sleeve for a rapid repair of a degraded tube caused by a detrimental chemical attack on the outside surface of the tube within and in a vicinity of a tube sheet in a steam generator, and the method for sealably inserting the sleeve in the degraded tube spanning the region of the degradation. The sleeve includes an inner member with equivalent mechanical properties of the degraded tube and an outer member metallurgically bonded to the inner member and resistive to caustic intergranular chemical attack causing tube degradation. The sleeve has an expanded portion at one end for positioning in the tube within the tube sheet and a multiplicity of grooves in and adjacent to the other end of the sleeve and braze material contained in the grooves.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: April 26, 1988
    Assignee: The Babcock & Wilcox Company
    Inventors: Paul S. Ayres, Louis E. Stark, Joel G. Feldstein, Tzerong Fu
  • Sleeve type repair of degraded nuclear steam generator tubes
    Patent number: 4592577
    Abstract: A sealable multimetallic sleeve for a rapid repair of a degraded tube caused by a detrimental chemical attack on the outside surface of the tube within and in a vicinity of a tube sheet in a steam generator, and the method for sealably inserting the sleeve in the degraded tube spanning the region of the degradation. The sleeve includes an inner member with equivalent mechanical properties of the degraded tube and an outer member metallurgically bonded to the inner member and resistive to caustic intergranular chemical attack causing tube degradation. The sleeve has an expanded portion at one end for positioning in the tube within the tube sheet and a multiplicity of grooves in and adjacent to the other end of the sleeve and braze material contained in the grooves.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 3, 1986
    Assignee: The Babcock & Wilcox Company
    Inventors: Paul S. Ayres, Louis E. Stark, Joel G. Feldstein, Tzerong Fu
  • Explosive welding device
    Patent number: 4583672
    Abstract: An explosive welding device is disclosed for securing sleeves within a tubular fluid conveying conduit. The device comprises a shatterable cup member, explosive material secured within the cup, a means for detonating the explosive material and a means for releasably securing the device in position within the sleeve by remote tooling.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: April 22, 1986
    Assignee: The Babcock & Wilcox Company
    Inventors: Henry Q. Bibb, David E. Merker, Louis E. Stark
  • Electroslag welding
    Patent number: 4156122
    Abstract: A method of electroslag welding using a blanket of fiberized siliceous material on a stationary consumable guide in a narrow gap welding process.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: May 22, 1979
    Assignee: The Babcock & Wilcox Company
    Inventors: Louis E. Stark, Marvin A. Brahler