Patents by Inventor David B. Allen

David B. Allen 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).

  • Publication number: 20030170489
    Abstract: A fusion weldable superalloy containing 0.005-0.5 wt. % scandium. In one embodiment, the superalloy may have a composition similar to IN-939 alloy, but having added scandium and having only 0.005-0.040 wt. % zirconium. A gas turbine component may be formed by an investment casting of such a scandium-containing superalloy, and may include a fusion weld repaired area. A scandium-containing nickel-based superalloy coated with an MCrAlY bond coat will have improved cyclic oxidation resistance due to the sulfur-gettering effect of the scandium.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 11, 2003
    Applicant: Siemens Westinghouse Power Corporation
    Inventors: David B. Allen, Gregg P. Wagner, Brij B. Seth
  • Publication number: 20020172837
    Abstract: A device operable in a temperature environment in excess of about 1000° C. is provided. The device comprises a substrate and a ceramic thermal barrier layer deposited on at least a portion of the substrate. The layer is formed with a ternary or pseudoternary oxide having a pyrochlore or perovskite structure and a fugative material and having pores or other voluminous defects. The thermal barrier layer advantageously is abradable.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 21, 2002
    Inventors: David B. Allen, Ramesh Subramanian, Wolfram Beele
  • Patent number: 6365222
    Abstract: A cold spray process (20) for applying an abradable coating (16) to a substrate material (12). A bond coat layer (14) and/or an abradable coating material layer (16) are applied to a substrate (12) by directing particles of the material toward the substrate surface at a velocity sufficiently high to cause the particles to deform and to adhere to the surface. Particles of the bond coat material may first be directed toward the substrate surface at a velocity sufficiently high to clean the surface (24) but not sufficiently high to cause the particles to deform and to adhere to the surface.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: April 2, 2002
    Assignee: Siemens Westinghouse Power Corporation
    Inventors: Gregg P. Wagner, David B. Allen, Brij B. Seth
  • Patent number: 5636888
    Abstract: A remote-controlled latch assembly having a latch plate assembly with a latch plate attached to a shank of a hoist hook. A latch is attached to the latch plate and is disposed across a throat of the hook. A latch operating assembly is also attached to the latch plate assembly and includes a drive motor for causing the latch to rotate to an open position. An electronics package, including a radio receiver, is disposed adjacent the drive motor and in electronic communication therewith. The operating assembly further includes an electrical power source for supplying electrical power to the electronics package and the drive motor.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: June 10, 1997
    Assignee: Drafto Corporation
    Inventors: David G. Kiser, David B. Allen