Patents by Inventor Hien D. Do

Hien D. Do 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).

  • Patent number: 5240543
    Abstract: A fastener insert attached to a mounting fixture is inserted into a hole drilled in a honeycomb panel. The mounting fixture has a rod with a disc at an end depending from a base and a chimney ascending from the base. Two bores are located in the base and are enclosed by the chimney. The mounting fixture base overlaps the head of the fastener insert which has two bores in the head. The bores in the fastener insert head are aligned with bores in the base of the mounting fixture. Epoxy is inserted into one of the bores in the base of the mounting fixture continuously until it returns out the second bore. The epoxy is allowed to cure and thereafter the mounting fixture is removed by a turning motion.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: August 31, 1993
    Assignee: ATR International, Inc.
    Inventors: Donald C. Fetterhoff, Hien D. Do
  • Patent number: 5093957
    Abstract: A top and bottom disk with central bores axially aligned for receipt of a through bolt fastener. The disks have descending and ascending integral cylindrical tubes respectively. The descending top disk tube has a side wall vertical channel leading to an eccentric hole in the top disk at one end. The inner diameter of the top disk cylindrical tube is slightly larger than the outer diameter of the bottom disk cylindrical tube and receives the bottom disk tube in axial alignment within a through hole in a two-sided honeycomb panel. Ridges on a surface of each disk, in contact with a honeycomb panel side, seal the disk in place after epoxy is inserted into the eccentric hole in the top disk.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: March 10, 1992
    Assignee: ATR International, Inc.
    Inventor: Hien D. Do