Patents by Inventor Jean Jacques Kray

Jean Jacques Kray 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).

  • Method and apparatus for installing elevator components
    Patent number: 6364067
    Abstract: An elevator system includes a hoistway that extends upwardly from a pit area to an upper hoistway area. A support plate extends across a lateral width of the hoistway and is mounted between a machine base and a guide rail assembly. A hoist tool is mounted within the hoistway near the upper hoistway area for lifting the machine base and rail assembly upwardly through the hoistway from the pit area to the top of the hoistway. The hoist tool supports a first set of pulleys and the support plate supports a second set of pulleys. A cable is threaded through the first and second sets of pulleys and is connected to a hoist machine for lifting the machine base and guide rail assembly to an installation position in the upper hoistway area via the hoist tool and pulley system.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: April 2, 2002
    Assignee: Otis Elevator Company
    Inventors: Thomas Glassey, Jean Jacques Kray, Patrice Letellier, Yves Fougeron