Patents by Inventor William H. Krueger

William H. Krueger 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).

  • Compression molding of structures
    Patent number: 5427731
    Abstract: A process for compression molding a fiber reinforced thermoplastic resin article that includes subjecting the fiber reinforced resin material to heat and pressure to form the article, then directionally cooling the mold sequentially from bottom to top to provide a thermal gradient suitable for creating directional solidification of the material.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: June 27, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John C. Chesna, Wayne F. Gentile, Subhotosh Khan, William H. Krueger
  • Fiber reinforced composites comprising uni-directional fiber layers and aramid spunlaced fabric layers
    Patent number: 5085928
    Abstract: A fiber reinforced composite matrix that includes one or more layers of unidirectional fibers alternated with one or more layers of a porous fibrous material, all the fibers being embedded in a thermoplastic resin.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: February 4, 1992
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: William H. Krueger
  • Structural composites of fluoropolymers reinforced with continuous filament fibers
    Patent number: 5069959
    Abstract: A composite comprising a fluoropolymer resin matrix reinforced with continuous filament aligned fibers for use in corrosive high temperature environments.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: December 3, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Wayne F. Gentile, Harvey L. Kliman, William H. Krueger
  • Method for producing fiber reinforced thermoplastic material
    Patent number: 4720366
    Abstract: A fiber reinforced material is made by passing a preheated tensioned filament array over an arcuate extruder head where thermoplastic polymer is flowed through the filament array to expel air from the array while coating the filaments with polymer. The filaments comprise 50 to 75 percent by volume of the material and the polymer has a relative viscosity of at least 50.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: January 19, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edwin K. Binnersley, William H. Krueger
  • Fiber reinforced thermoplastic material
    Patent number: 4640861
    Abstract: A fiber reinforced material is made by passing a preheated tensioned filament array over an arcuate extruder head where thermoplastic polymer is flowed through the filament array to expel air from the array while coating the filaments with polymer. The filaments comprise 50 to 75 percent by volume of the material and the polymer has a relative viscosity of at least 50.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: February 3, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edwin K. Binnersley, William H. Krueger
  • Reactor vessel in-service inspection assembly and ultrasonic centering device
    Patent number: 4302286
    Abstract: A reactor vessel in-service inspection assembly (17) having an improved positioning device (80) for properly and repeatedly locating the inspection transducers (75) of the assembly within a hollow portion of the reactor vessel cavity. An acoustic transducer of the positioning device of this invention is affixed to the positioning arm (40) of the inspection transducers (75). The positioning transducer is operable to generate and simultaneously, radially direct acoustic signals around the circumference of the hollow portion of the vessel cavity and receive the signals reflected off of the cavity walls at a location within the hollow cavity. Means are provided for monitoring the received signals as a function of time. The in-service inspection assembly transducer positioning arm is arranged to automatically move in response to the monitored difference in the time of reception of the received signals to locate the positioning transducer at a preestablished location within the hollow portion of the reactor cavity.
    Type: Grant
    Filed: April 24, 1979
    Date of Patent: November 24, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Bernard J. Lefebvre, William H. Krueger
  • Reactor vessel stud turnout tool
    Patent number: 4223575
    Abstract: Apparatus for removing or inserting studs of a nuclear reactor vessel closure head so that the closure head may be removed for refueling the nuclear reactor. The apparatus comprises a carriage having an engagement mechanism for firmly contacting the studs and a rotation mechanism for rotating the engagement mechanism. A drive mechanism is also attached to the carriage for rotating the rotation mechanism. In addition, a support device is associated with the carriage that is capable of supporting the weight of the carriage during transit and of supporting the weight of the stud while the stud is being manipulated.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: September 23, 1980
    Assignee: Westinghouse Electric Corp.
    Inventor: William H. Krueger