Patents by Inventor Ernst Luethi

Ernst Luethi 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: 10087047
    Abstract: A door system for an elevator installation having an elevator car with a car door arranged to travel in an elevator shaft with shaft doors, wherein the car door is spaced from the shaft doors in a closed position of the door system. A primary pivot spindle is coupled to a pivotable door leaf of the shaft door or the car door and a secondary pivot spindle is coupled to a pivotable door leaf of the other of the car door and the shaft door. A drive unit includes a driven, pivotably mounted shaft to which a first entrainer and a second entrainer are fixed. During a pivoting movement of the shaft, the first entrainer engages a first counterpart element on the primary pivot spindle and the second entrainer engages a second counterpart element on the secondary pivot spindle to effect a pivoting movement of the door leaves.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: October 2, 2018
    Assignee: INVENTIO AG
    Inventors: Ralph Kuppelwieser, Ernst Lüthi, Jonas Vonaesch
  • Patent number: 10023437
    Abstract: A door system for an elevator installation having an elevator car, the door system including a pivotable first car door leaf mounted at a car door opening and a pivotable first shaft door leaf mounted at a shaft door opening of the elevator installation. At least a part of the shaft door opening is closed by the first shaft door leaf in a closed position thereof and a shaft door plane is formed along the shaft door leaf. At least a part of the car door opening is closed by the first car door leaf in a closed position thereof and a car door plane is formed along the car door leaf. The car door leaf, in an open position thereof, extends through the shaft door plane, or the shaft door leaf, in an open position thereof, extends through the car door plane.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 17, 2018
    Assignee: INVENTIO AG
    Inventors: Ralph Kuppelwieser, Ernst Lüthi, Jonas Vonaesch
  • Publication number: 20170334680
    Abstract: A door system for an elevator installation having an elevator car, the door system including a pivotable first car door leaf mounted at a car door opening and a pivotable first shaft door leaf mounted at a shaft door opening of the elevator installation. At least a part of the shaft door opening is closed by the first shaft door leaf in a closed position thereof and a shaft door plane is formed along the shaft door leaf. At least a part of the car door opening is closed by the first car door leaf in a closed position thereof and a car door plane is formed along the car door leaf. The car door leaf, in an open position thereof, extends through the shaft door plane, or the shaft door leaf, in an open position thereof, extends through the car door plane.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 23, 2017
    Inventors: Ralph Kuppelwieser, Ernst Lüthi, Jonas Vonaesch
  • Publication number: 20170334681
    Abstract: A door system for an elevator installation having an elevator car with a car door arranged to travel in an elevator shaft with shaft doors, wherein the car door is spaced from the shaft doors in a closed position of the door system. A primary pivot spindle is coupled to a pivotable door leaf of the shaft door or the car door and a secondary pivot spindle is coupled to a pivotable door leaf of the other of the car door and the shaft door. A drive unit includes a driven, pivotably mounted shaft to which a first entrainer and a second entrainer are fixed. During a pivoting movement of the shaft, the first entrainer engages a first counterpart element on the primary pivot spindle and the second entrainer engages a second counterpart element on the secondary pivot spindle to effect a pivoting movement of the door leaves.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 23, 2017
    Inventors: Ralph Kuppelwieser, Ernst Lüthi, Jonas Vonaesch
  • Patent number: 6234231
    Abstract: A device for attaching a supplement to an exposed surface of signatures transported one after another in a transporting direction along a guide arrangement includes a rotating gripping roller for picking up the supplements at the circumference of the rotating gripping roller with a controlled gripping tool. The rotating gripping roller has a rotational axis arranged approximately at a right angle to the transporting direction and at least approximately parallel to the exposed surface of the transported signatures. An adhesive feeder is provided along a transporting path for supplements. A forward feed is operatively arranged with the rotating gripping roller to operate in cycle with the rotating gripping roller for placing the supplements approximately tangentially with respect to the rotating gripping roller so that the supplements are on the circulation path for the controlled gripping tool.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: May 22, 2001
    Assignee: Grapha-Holding AG
    Inventors: Christian Boss, Ernst Luethi
  • Patent number: 5496024
    Abstract: To transport flat printed products lying on a support formed by a driven first belt, and moved forward in a conveying channel by means of the run of a second belt disposed above the first, the entrance region of the channel is configured to be adjustable in height in the cadence of the supplied printed products.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: March 5, 1996
    Assignee: Grapha-Holding AG
    Inventors: Ernst Luethi, Daniel Langenegger