Patents by Inventor Michael Vorobyov

Michael Vorobyov 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).

  • Device for the removal or installation of fluorescent tubes of the single-pin type
    Patent number: 4919019
    Abstract: A device for removing and installing single-pin type fluorescent tubes has a cradle in which a fluorescent tube is frictionally held, and a pusher mechanism that can be extended by rotation of a pole on which the cradle is supported.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: April 24, 1990
    Assignee: Unger Licencing Ltd.
    Inventors: Henry M. Unger, Michael Vorobyov
  • Device for installing or removing fluorescent tubes from lighting fixtures
    Patent number: 4791835
    Abstract: A device for installing or removing fluorescent tubes from a lighting fixture has a cradle with drive rollers and has spring biased arms which move the drive rollers into frictional engagement with a fluorescent tube, subsequent to which the drive rollers can be rotated to rotate the fluorescent tube by rotating a pole carrying the device.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: December 20, 1988
    Assignee: Unger Licencing Ltd.
    Inventors: Henry M. Unger, Michael Vorobyov
  • Locking mechanism for telescoped poles
    Patent number: 4464078
    Abstract: A locking mechanism for telescoped poles includes an eccentric cam and a roller which becomes trapped behind axially extending ribs formed on the interior of the outermost pole or on the exterior of the eccentric cam to enhance the resistance of the locking mechanism to unintended unlocking movement.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: August 7, 1984
    Assignee: Unger Enterprises, Inc.
    Inventor: Michael Vorobyov