Patents Assigned to Kievsky Politenkhnichesky Institut
  • Patent number: 4771661
    Abstract: A vibratory pipe wrench includes a hollow handle provided with a fit-on movable jaw and a vibrator, the vibrator being electrically connected to an alternating voltage generator and having a gripping jaw adapted to interact with a pipe being handled, in conjunction with the fit-on movable jaw, the vibrator being movable along the longitudinal axis of the handle, the handle having an additional gripping jaw adapted to interact with the pipe when the vibrator is moved deeper into the hollow interior of the handle, the wrench further including a feedback circuit which electrically interconnects the vibrator and the generator.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: September 20, 1988
    Assignee: Kievsky Politenkhnichesky Institut
    Inventors: Georgy T. Levchenko, Alexandr N. Radzikovsky