Patents by Inventor Helmut J. W. Meyer

Helmut J. W. Meyer 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).

  • Patent number: 7222713
    Abstract: The invention pertains to an escalator (2) with an endless stair band (6) that is composed of several interconnected steps (4), wherein a step (4) contains a walking surface (16) and a front side (18) and is connected to respective lateral step chains (8) that are driven around a lower and an upper reversing point (22) by means of a drive, and wherein a step (4) contains at least one step roller (34) that is guided by a step roller guide. The invention is characterized by the fact that the point (32) at which a step (4) is fastened to the step chain (8) is arranged in the vicinity of the front side (18) of the step (4).
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: May 29, 2007
    Assignee: Otis Elevator Company
    Inventors: Uwe Hauer, Andreas Stuffel, Helmut J. W. Meyer, Richard N. Fargo
  • Patent number: 7168547
    Abstract: Passenger conveyor (2) including an endless conveyor band (6) connected to a drive chain (8) at each lateral edge thereof and driven by a conveyor band drive (40) including an electric motor (48) and one drive output device (42) at each lateral edge of the conveyor band (6) for driving the respective drive chain (8), characterised in that the conveyor band drive (40) is arranged laterally outside of the conveyor band (6).
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: January 30, 2007
    Assignee: Otis Elevator Company
    Inventors: Dietmar Thaler, Richard Fargo, Helmut J. W. Meyer
  • Publication number: 20040060800
    Abstract: The invention pertains to an escalator (2) with an endless stair band (6) that is composed of several interconnected steps (4), wherein a step (4) contains a walking surface (16) and a front side (18) and is connected to respective lateral step chains (8) that are driven around a lower and an upper reversing point (22) by means of a drive, and wherein a step (4) contains at least one step roller (34) that is guided by a step roller guide. The invention is characterized by the fact that the point (32) at which a step (4) is fastened to the step chain (8) is arranged in the vicinity of the front side (18) of the step (4).
    Type: Application
    Filed: May 23, 2003
    Publication date: April 1, 2004
    Inventors: Uwe Hauer, Andreas Stiffel, Helmut J. W. Meyer, Richard n. Fargo
  • Patent number: 5542521
    Abstract: A step platform for an escalator is provided, comprising a higher step and a lower step. The higher step includes a top surface and a support arm. The lower step has a main body, a raisable middle section, and apparatus for selectively raising the middle section. When the apparatus for selectively raising the middle section engages the support arms, the top surface of the middle section is maintained in the same plane as the top surface of the higher step.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: August 6, 1996
    Assignee: Otis Elevator Company
    Inventors: Helmut J. W. Meyer, Hermann W. Ahls, Klaus Blaseck, Udo Schmitting
  • Patent number: 5381881
    Abstract: A step platform for an escalator having a step chain with a plurality of axles is provided comprising a lower step attached to an axle of the step chain, a higher step, attached to an axle of the step chain, having a middle section, and apparatus for actuating the middle section. The actuating apparatus is operated by the rotation of the step chain axles in the transition zones between the landings and the inclined midsection of the escalator.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: January 17, 1995
    Assignee: Otis Elevator Company
    Inventors: Helmut J. W. Meyer, Hermann W. Ahls, Klaus Blaseck, Udo Schmitting
  • Patent number: 5307920
    Abstract: An escalator handrail drive system includes a powered drive belt which engages the underneath surface of the handrail along the return path of travel of the latter. A series of pressure rollers engage the outer surface of the handrail to press the latter against the drive belt. The pressure rollers are all biased against the handrail by a single spring. The drive belt is pretensioned by an adjustable pretension spring assembly which can apply a fixed pretensioning force to the drive belt which will not substantially change irrespective of whether the handrail is being driven in the "up" direction or in the "down" direction on the escalator.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: May 3, 1994
    Assignee: Otis Elevator Company
    Inventors: Helmut J. W. Meyer, Hermann W. Ahls, Klous Blaseck