Patents by Inventor Lawrence Eugene White

Lawrence Eugene White 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).

  • Automatic recycle control for hydraulic elevators with telescopic cylinders
    Patent number: 4043428
    Abstract: Apparatus for automatically sensing when an insufficient amount of fluid exists in a closed fluid power transmission system of a telescoping piston type hydraulic elevator system and circuitry shown interconnected with the control system of a typical hydraulic control system for automatically initiating a fluid restoration cycle to restore fluid to that closed fluid power transmission system to enable the system to operate in a desired manner.
    Type: Grant
    Filed: December 10, 1975
    Date of Patent: August 23, 1977
    Assignee: Otis Elevator Company
    Inventors: Lawrence Eugene White, Arthur Brantlyn Woolsey