Patents by Inventor Christian-Andre Keun

Christian-Andre Keun 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 for continuously joining a handrail for an escalator or moving walkway
    Patent number: 7200915
    Abstract: Two opposite ends of a handrail stock member are joined to form a handrail having a closed-loop configuration for an escalator or the like. A slot is cut into each end, parallel to a longitudinal reinforcement layer of the handrail stock member. A joint reinforcement insert including longitudinally-oriented high-strength high-stiffness fibers is inserted into the two slots and the two ends are butted together. A thermoplastic matrix material of the handrail stock member in the joint area is heated to a softening or melting temperature and is press-molded to penetrate into the reinforcement insert and bond the insert to portions of the reinforcement layer overlapped by the insert. The matrix material is fused across the junction plane. A pressing mold maintains the defined outer contour of the handrail.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: April 10, 2007
    Assignee: New-York Hamburger Gunni-Waaren Compagnie AG
    Inventor: Christian-André Keun
  • Method and apparatus for continuously joining a handrail for an escalator or moving walkway
    Publication number: 20050066500
    Abstract: Two opposite ends of a handrail stock member are joined to form a handrail having a closed-loop configuration for an escalator or the like. A slot is cut into each end, parallel to a longitudinal reinforcement layer of the handrail stock member. A joint reinforcement insert including longitudinally-oriented high-strength high-stiffness fibers is inserted into the two slots and the two ends are butted together. A thermoplastic matrix material of the handrail stock member in the joint area is heated to a softening or melting temperature and is press-molded to penetrate into the reinforcement insert and bond the insert to portions of the reinforcement layer overlapped by the insert. The matrix material is fused across the junction plane. A pressing mold maintains the defined outer contour of the handrail.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 31, 2005
    Inventor: Christian-Andre Keun
  • People mover, such as a moving walkway or escalator, with a handrail, and a handrail for a people mover, such as a moving walkway or escalator
    Patent number: 6497318
    Abstract: This invention relates to a handrail for a people mover, such as an escalator or moving walkway, with a grip for people to grasp and a one-piece structure comprising several layers with structural inserts, with the layers being joined together to form the one-piece structure.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: December 24, 2002
    Assignee: New-York Hamburger Gummi-Waaren Compagnie Aktiengesellschaft
    Inventors: Karl Schulte, Christian-André Keun
  • People mover, such as a moving walkway or escalator, with a handrail, and a handrail for a people mover, such as a moving walkway or escalator
    Publication number: 20020084169
    Abstract: This invention relates to a handrail for a people mover, such as an escalator or moving walkway, with a grip for people to grasp and a one-piece structure comprising several layers with structural inserts, with the layers being joined together to form the one-piece structure.
    Type: Application
    Filed: June 5, 2001
    Publication date: July 4, 2002
    Inventors: Karl Schulte, Christian-Andre Keun