Patents by Inventor by Patricia Miller, executor

by Patricia Miller, executor 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).

  • Apparatus for dispensing low viscosity semi-fluid material under pressure
    Patent number: 4994065
    Abstract: An injection gun especially useful for injecting low volume, high pressure shots of bone cement. The gun includes a cylindrical housing with a plunger including a plunger rod extending axially through the housing. The plunger rod includes a segment which is provided with an axial series of notches. A ratchet block is slidable axially within the cylindrical housing and is concentric with the plunger rod. The ratchet cylinder mounts at least a ratchet pawl urged against the plunger rod and adapted to engage and lock into the series of notches for forward movement. A pistol grip extends from the cylindrical housing, and a lever is pivoted thereto with an extension of the lever engaging the ratchet cylinder for advancing the plunger. A second ratchet pawl is mounted on a fixed member of the cylindrical housing for retaining the plunger against rearward movement when the pawl in the ratchet cylinder is disengaged from the rod.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: February 19, 1991
    Assignee: Zimmer, Inc.
    Inventors: Rebecca Gibbs, Jan J. Krygier, Joseph E. Miller, deceased, by L. A. Desrochers, executor, by Bryan O'Donnell, executor, by Patricia Miller, executor