Patents by Inventor Daniel L. DeMarco

Daniel L. DeMarco 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: 6439078
    Abstract: An overload protection device for a manual hoist lever including a pressure hub, an outer hub, a brake nut, and a dowel pin. The pressure hub includes a radially extending flange and a cantilevered boss having a threaded outer surface with an axial groove. The outer hub includes a central opening, a tapered inner surface, and a flange contact surface which frictionally contacts the radially extending flange of the pressure hub. The brake nut is disposed in the central opening of the outer hub between the outer hub and the boss of the pressure hub, and includes a frusto-conical outer surface that frictionally contacts the tapered inner surface of the outer hub, as well as a threaded inner opening with a corresponding axial groove, the threaded inner opening being sized to threadingly engage the boss. The dowel pin is received within a receiving hole formed upon alignment of the axial groove of the boss and the corresponding axial groove of the brake nut.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: August 27, 2002
    Assignee: FKI Industries Inc.
    Inventors: Richard D. Schlude, Daniel L. DeMarco