Patents by Inventor Stefan I. Kulekov

Stefan I. Kulekov 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 the control of self-propelled gamma-flaw detector
    Patent number: 4283628
    Abstract: A self-propelled device movable inside a pipeline for the radiographic detection of flaws in its weld joints comprises a reversible drive motor and a normally deactivated radiation emitter. Logical circuitry aboard the device, including a two-stage memory, enables the selective energization of the drive motor and the activation of the radiation emitter during standstill in response to command pulses of different duration transmitted from an external radiation source through the pipeline wall and intercepted by one of two sensors.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: August 11, 1981
    Assignee: DSO "Montaji"--Kontrolno Zavarachno Upravlenie
    Inventors: Stefan I. Kulekov, Alexander S. Pavlov