Patents by Inventor Gopalakrishna Rajagopalan

Gopalakrishna Rajagopalan 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).

  • Modular handrail construction for a passenger conveyor handrail
    Patent number: 8721949
    Abstract: A method of making a passenger conveyor handrail includes forming a drive member having a plurality of longitudinally spaced drive surfaces. The drive member has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. The drive member is inserted into a molding device. A gripping surface portion of the handrail is formed using the molding device such that the gripping surface portion and the drive member are secured together. Another method includes forming a belt drive member having a plurality of teeth that establish a plurality of longitudinally spaced drive surfaces. The belt has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. Each of the teeth extends across an entire width of the belt. The belt is secured to a gripping surface portion of the handrail.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: May 13, 2014
    Assignee: Otis Elevator Company
    Inventors: John P. Wesson, John M. Milton-Benoit, Changsheng Guo, James R. Irish, Gopalakrishna Rajagopalan, Xiaomei Yu, Jun Ma, Foster P. Lamm, Justin R. Hawkes
  • MODULAR HANDRAIL CONSTRUCTION FOR A PASSENGER CONVEYOR HANDRAIL
    Publication number: 20100117263
    Abstract: A method of making a passenger conveyor handrail includes forming a drive member having a plurality of longitudinally spaced drive surfaces. The drive member has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. The drive member is inserted into a molding device. A gripping surface portion of the handrail is formed using the molding device such that the gripping surface portion and the drive member are secured together. Another method includes forming a belt drive member having a plurality of teeth that establish a plurality of longitudinally spaced drive surfaces. The belt has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. Each of the teeth extends across an entire width of the belt. The belt is secured to a gripping surface portion of the handrail.
    Type: Application
    Filed: May 9, 2007
    Publication date: May 13, 2010
    Inventors: John P. Wesson, John M. Milton-Benoit, Changsheng Guo, James R. Irish, Gopalakrishna Rajagopalan, Xiaomei Yu, Jun Ma, Foster P. Lamm, Justin R. Hawkes