Patents by Inventor Thaddeus R. Drapala

Thaddeus R. Drapala 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: 5099762
    Abstract: An electro-explosive initiator which may be either a coaxial or floating case type, for example, and which is constructed to be immune from the effects of electrostatic discharges. The initiator includes a bridgewire and contact pins for carrying an electric igniting signal to the bridgewire. The initiator has a discrete capacitor connected across the contact pins to shunt out the energy resulting from an electrostatic discharge pulse, and for preventing such energy from reaching the bridgewire.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: March 31, 1992
    Assignee: Special Devices, Incorporated
    Inventor: Thaddeus R. Drapala
  • Patent number: 4545077
    Abstract: An electrical multiplex data bus is operatively coupled to an optical multiplex data bus by means of a novel electro-optical converter arrangement to form a hybrid data transmission system in which the transition from the optical data bus to the electrical data bus or vice versa is transparent to the individual terminals and controllers connected thereto. The data on the electrical bus is encoded in a biphase Manchester II code. Within the optical portion of the system, the data is represented by three different levels of flux within the optical fiber transmission line. Since flux is a measure of the intensity of the light, it will never be less than zero; accordingly, the three flux levels may be "zero", an intermediate value "L", and a maximum value "H".
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: October 1, 1985
    Assignee: Lockheed Corporation
    Inventors: Thaddeus R. Drapala, Mohammad K. Zaman