Patents by Inventor Malcolm J. MacMartin

Malcolm J. MacMartin 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).

  • Internal impacted screw-locking pellet
    Patent number: 5360302
    Abstract: An elongate fastener having an engaging surface engageable with an engaging surface of a fastener's mate includes a hole extending through a portion of the fastener and having a top opening and a bottom floor, a locking pellet disposed near the bottom floor, a discharge channel communicating between the pellet and through the engaging surface of the fastener and opening out toward the engaging surface of the fastener's mate, and an impact pin in the hole having a top portion protruding through the top opening and a bottom portion near the locking pellet, whereby the pin drives the locking pellet through the discharge channel against the engaging surfaces of the fastener and the fastener's mate whereby to lock the fastener against the fastener's mate.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: November 1, 1994
    Assignee: California Institute of Technology
    Inventor: Malcolm J. MacMartin