Patents by Inventor Caroline Bednarczyk

Caroline Bednarczyk 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).

  • Performance of vibration welded thermoplastic joints
    Patent number: 5874146
    Abstract: The invention provides an improved method of vibration welding of thermoplastic joints. Such welding is conducted by vibrating two fiber reinforced thermoplastic parts under pressure along their common interface to generate frictional heat to melt and fuse their surfaces together. Fibers from at least one surface penetrate both into the weld and into the other surface. As a result, the welded, fiber reinforced thermoplastic surfaces have increased tensile strength than heretofore achievable. Vibration welds of reinforced thermoplastic surfaces according to this invention achieve a maximum tensile strength as high as about 120% of a weld formed by the unreinforced surfaces of corresponding thermoplastic materials.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: February 23, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Valeriy Kagan, Caroline Bednarczyk, Siu-Ching Lui, Gregory R. Smith