Patents by Inventor Antonio M. Colla

Antonio M. Colla 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).

  • Differential firing head and method of operation thereof
    Patent number: 5161616
    Abstract: A differential firing head for a tubing conveyed perforation assembly includes a pressure-balanced firing pin propelled by a separate actuator assembly into a detonator to ignite charges in the gun. The actuator assembly includes a shock absorber which functions to keep fluid pressure momentum forces from being transmitted to the firing pin during movement of the tubing string, but which allows differential fluid pressure forces of a preselected magnitude to be applied to the firing pin for detonation of the gun.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: November 10, 1992
    Assignee: Dresser Industries, Inc.
    Inventor: Antonio M. Colla