Patents by Inventor René Hoffmann

René Hoffmann 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).

  • Equipment for fine positioning of a car of a multi-stage car
    Patent number: 7261185
    Abstract: A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. The fine positioning adjusting equipment operates on the principle of a double lever and moves a car frame along a path (?z).
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: August 28, 2007
    Assignee: Inventio AG
    Inventors: René Strebel, René Hoffmann, Urs Schaffhauser
  • Equipment for fine positioning of the cars of a multi-stage car for an elevator
    Patent number: 7232011
    Abstract: A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. Adjusting equipment operating on the principle of a differential block and pulley is provided for fine positioning of the cars, the equipment including an endless cable guided over deflecting rollers arranged at the main frame of the multi-stage car and over deflecting rollers arranged at the cars, wherein the cars execute vertical movements of opposite sense.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: June 19, 2007
    Assignee: Inventio AG
    Inventors: René Strebel, René Hoffmann, Urs Schaffhauser