Patents by Inventor David Harvey Wolf

David Harvey Wolf 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).

  • Elevator safety arrangement
    Patent number: 4114731
    Abstract: An elevator safety arrangement for preventing further automatic movement of an elevator car upon the car exceeding a predetermined velocity when it is located within a predetermined distance of a landing at which a stop is to be made.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: September 19, 1978
    Assignee: Otis Elevator Company
    Inventors: John Joseph Faup, David Harvey Wolf