Patents by Inventor Marcel Imfeld

Marcel Imfeld 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).

  • Speed limiter in an elevator system
    Patent number: 8875846
    Abstract: A speed limiter for an elevator system includes: at least one speed limiter wheel having a first radial cam with lobes, and at least a second, phase-shifted radial cam with lobes; a first mass, which is rotatably arranged in a first pivot bearing and which together with a first roller rolls on the first radial cam such that the first mass follows a first oscillating motion when the speed limiter wheel rotates; and a second mass, which is rotatably arranged in a second pivot bearing and which together with a second roller rolls on the second radial cam such that the second mass follows a second oscillating motion when the speed limiter wheel rotates.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: November 4, 2014
    Assignee: Inventio AG
    Inventors: Marcel Imfeld, Karsten Gensicke
  • SPEED LIMITER IN AN ELEVATOR SYSTEM
    Publication number: 20120061189
    Abstract: A speed limiter for an elevator system includes: at least one speed limiter wheel having a first radial cam with lobes, and at least a second, phase-shifted radial cam with lobes; a first mass, which is rotatably arranged in a first pivot bearing and which together with a first roller rolls on the first radial cam such that the first mass follows a first oscillating motion when the speed limiter wheel rotates; and a second mass, which is rotatably arranged in a second pivot bearing and which together with a second roller rolls on the second radial cam such that the second mass follows a second oscillating motion when the speed limiter wheel rotates.
    Type: Application
    Filed: June 1, 2010
    Publication date: March 15, 2012
    Inventors: Marcel Imfeld, Karsten Gensicke