Patents by Inventor Marco Greubel

Marco Greubel 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: 8844699
    Abstract: A clutch assembly, particularly for a friction clutch of a motor vehicle, with at least one clutch housing in which is arranged a diaphragm spring that acts on a pressure plate and is secured to the clutch housing by a holding ring with retaining tabs distributed over a circumference at a distance axially from the holding ring. The retaining tabs define an axial stop. A spring element is arranged between two adjacent structural component parts of the clutch assembly that are arranged between the holding ring and the axial stop of the retaining tabs that exerts an axial spring force on the adjacent structural component parts. The spring element is arranged on at least one retaining tab and has at least two edge-side support regions that extend in direction of the adjacent retaining tabs and at least partially contact one structural component part and at least one axial raised portion arranged between the support regions that at least partially contacts the other structural component part.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: September 30, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Peter Schömig, Marco Greubel
  • Publication number: 20110272235
    Abstract: A clutch assembly, particularly for a friction clutch of a motor vehicle, with at least one clutch housing in which is arranged a diaphragm spring that acts on a pressure plate and is secured to the clutch housing by a holding ring with retaining tabs distributed over a circumference at a distance axially from the holding ring. The retaining tabs define an axial stop. A spring element is arranged between two adjacent structural component parts of the clutch assembly that are arranged between the holding ring and the axial stop of the retaining tabs that exerts an axial spring force on the adjacent structural component parts. The spring element is arranged on at least one retaining tab and has at least two edge-side support regions that extend in direction of the adjacent retaining tabs and at least partially contact one structural component part and at least one axial raised portion arranged between the support regions that at least partially contacts the other structural component part.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 10, 2011
    Applicant: ZF Friedrichshafen AG
    Inventors: Peter SCHÖMIG, Marco GREUBEL
  • Patent number: 6206158
    Abstract: A device for a clutch which is subject to wear brought about by friction, especially for motor vehicles, for signaling that a wear limit has been reached. The clutch has a pressure plate which is connected, via tangential leaf springs, with a clutch housing so as to be fixed with respect to rotation relative to it, but so as to be axially displaceable, and by way of which a clutch disk provided with friction linings can be pressed against a flywheel of an internal combustion engine. The device has two structural component parts which can be clamped against one another, one of which structural component parts is arranged so as to be movable in the radial direction. A clamping of the structural component parts can be canceled when the wear limit is reached, wherein a movable structural component part springs into another radial position and remains there.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: March 27, 2001
    Assignee: Mannesmann Sachs AG
    Inventors: Roland Müller, Marco Greubel, Erwin Ziegler, Frank Hirschmann
  • Patent number: 6116400
    Abstract: An assembly for a motor-vehicle friction clutch, in which a pressure plate and a pressure spring are preassembled in a clutch casing. The pressure plate can move in the axial direction with respect to the clutch casing and is connected to the clutch casing in a rotationally fixed manner by means of leaf springs. A releasable transport securing device prevents the pressure plate from moving in the axial direction toward the open side of the clutch casing. The securing device acts between a stop area, which limits the axial displacement of the pressure plate or is formed by said pressure plate, and a corresponding opposing stop area on the clutch casing. The transport securing device is a locking element which is held between the stop area and the opposing stop area by frictional force or a form fit, and can be disengaged by spring force when the clutch is fitted or when the clutch is first actuated.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: September 12, 2000
    Assignee: Mannesmann Sachs AG
    Inventors: Roland Muller, Marco Greubel, Erwin Ziegler, Winfried Sturmer, Frank Hirschmann