Patents by Inventor Levi Ytzhak Halperin

Levi Ytzhak Halperin 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).

  • Load cancelling device for conveyance systems
    Patent number: 4071116
    Abstract: A load-cancelling system for conveyance systems, such as elevators, is especially adapted for cancelling the effect of the load weight on power requirements and includes at least one weighing device adapted to determine the weight of the load in the elevator. The system also includes a brake adapted to dissipate energy from the conveyance system and interface means between the weighing device and the brake for translating the result of the weighing operation to a corresponding braking operation.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: January 31, 1978
    Assignee: Shaare Zedek Hospital
    Inventors: Levi Ytzhak Halperin, Dov Zioni, David Bennet