Patents by Inventor Hans-Dietrich Riedel

Hans-Dietrich Riedel 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: 5482153
    Abstract: An operation panel for a passenger conveying device having a balustrade is provided comprising a key switch, a key pad, and a processor. The key switch may be actuated into a plurality of switch positions by an independent key and the keypad may be used to input data into the processor. The processor, which processes data from external inputs and the keypad, includes a programmable memory selectively accessible by password. A first level of the processor is accessible without actuating the key switch from a first switch position or entering a password into the keypad. A second level of the processor is accessible by actuating the key switch into a second switch position. A third level of the processor is accessible by actuating the key switch into the second switch position and inputting a password to the processor through the keypad.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: January 9, 1996
    Assignee: Otis Elevator Company
    Inventors: Detlev Abraham, Hans-Dietrich Riedel
  • Patent number: 5366061
    Abstract: The moving handrail of an escalator or moving walkway is guided around the curved newel of the escalator balustrade by a plastic guide system. A metal base member is frictionally fitted onto the outer edge of the glass balustrade. An extruded aluminum profile is mounted in the upper and outer surface of the base. A series of spaced pads formed from a low coefficient of friction plastic are fixed to the profile to form the contact sliding surface for the handrail.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: November 22, 1994
    Assignee: Otis Elevator Company
    Inventors: Michael Kruse, Hans-Dietrich Riedel
  • Patent number: 5072821
    Abstract: An escalator or people mover having steps or pallets which are supported by axles that are driven by a step chain, utilize a split bearing disposed between the axle and the step or pallet. The split bearing allows for rapid replacement of a worn bearing. The split bearing has a shaped outer portion for cooperating with the step or pallet to prevent rotation of the bearing relative to the step.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: December 17, 1991
    Assignee: Otis Elevator Company
    Inventors: Michael Kruse, Hans-Dietrich Riedel