Patents by Inventor Leland Hanchett

Leland Hanchett 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: 4017107
    Abstract: An Electric Door Strike is disclosed wherein a notch is provided in a strike frame for receiving a latch or a dead bolt. A pivoting shutter is positioned adjacent the notch and is pivotable between an open position to admit the dead bolt when the latter is in its extended position, and a closed position wherein the notch receiving the dead bolt is partially covered. In the closed position the dead bolt may not be withdrawn from the strike frame except by being withdrawn into the door lock mechanism. The shutter is mounted on the shaft of a rotary solenoid which, when energized, pivots the shutter to the open position. A stop pin is secured to the shutter and engages a mating detent in the strike frame when the shutter is closed to prevent the shutter from being forced open from a position externally of the door.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: April 12, 1977
    Inventor: Leland Hanchett