Patents by Inventor Matthias Fischer

Matthias Fischer 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: 4903812
    Abstract: The invention relates to a clutch disc including an idling damping device and an under-load damping device, wherein the idling damping device is active between two hub parts coupled with each other by a toothing having play in the circumferential direction. In order to avoid the load-change impact, centrifugal weights are provided between the two parts. The centrifugal weights frictionally couple the two parts by means of a self-intensifying effect.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: February 27, 1990
    Assignee: Fichtel & Sachs AG
    Inventors: Matthias Fischer, Harald Jeppe
  • Patent number: 4881468
    Abstract: Described in a suspension conveyor system suitable for the use of conveyance units having two travelling rollers interconnected by an open yoke. The suspension conveyor system is universally applicable and capable of optimum adaptation to operating and space conditions in a given plant. To this purpose the system comprises changeover means selectively operable to tilt a conveyance unit to a left or right laterally suspended position or a center-suspended position to thereby permit for instance the radii of curved rail sections to be considerably shortened and particularly achieve a less complicated construction of required switches. In a preferred embodiment the switch is formed as an integral shaped member, so that the continuity of the rail circuit has not to be interrupted for guiding a conveyance unit onto selected branch rails.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: November 21, 1989
    Assignee: Veit GmbH & Co.
    Inventors: Josef Hafner, Werner Bergmeier, Rolf Schonenberger, Matthias Fischer
  • Patent number: 4789053
    Abstract: The torsional vibration damper suitable for the clutch disc of a motor vehicle friction clutch comprises an idling damper, the springs of which are retained in recesses of a toothing which couple the hub of the damper with a disc part, with limited play in rotation. The end faces of the spring lie for the one part on stop edges of the disc part and for the other part on stop edges of two retaining discs which annularly enclose the hub. The retaining discs are coupled non-rotatably, by axial bent-out portions, with a hub disc of the hub, and for assembly are pushed axially on to the hub. The retaining discs can be produced simply and fitted without problem. FIG. 1.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: December 6, 1988
    Assignee: Fichtel & Sachs AG
    Inventors: Matthias Fischer, Rainer Ziss
  • Patent number: 4669595
    Abstract: Clutch disc for a motor vehicle friction clutch comprises a hub and a disc part enclosing the hub and coupled with predetermined play in rotation but otherwise non-rotatably with the hub. Side discs on axially opposite sides of the disc part form one unit mounted on the hub rotatably through a limited first angle relative to the disc part. The disc part is coupled rotationally elastically with the hub through at least one spring of an idling vibration damper. Several springs of an under-load vibration damper, arranged in windows of the disc part and of the two side discs, couple the side discs rotationally elastically with the disc part. The under-load vibration damper comprises a friction device having two control discs arranged on axially opposite sides of the disc part between the disc part and one each of the two side discs. The control discs are connected non-rotatably with one another.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: June 2, 1987
    Assignee: Fichtel & Sachs AG
    Inventors: Matthias Fischer, Franz Hartig, Dieter Bernhard, Hilmar Gobel
  • Patent number: 4667801
    Abstract: A cluch disc of a motor vehicle clutch comprises a clutch disc hub and a hub flange integral therewith. The hub flange is provided with a plurality of coherent windows each of which receives both a helical compression spring and an interconnection bolt interconnecting the cover plates of the clutch disc which are angularly movably mounted on the clutch disc hub. The window is closed at its radially outer side by an uninterrupted web.
    Type: Grant
    Filed: November 19, 1985
    Date of Patent: May 26, 1987
    Assignee: Fichtel & Sachs AG
    Inventors: Matthias Fischer, Peter Wiggen, Rainer Ziss
  • Patent number: 4640402
    Abstract: The clutch disc for a motor vehicle friction clutch comprises a hub and a friction lining carrier mounted rotatably on the hub. A torsional vibration spring means is arranged in the torque transmission path between the friction lining carrier and the hub. A torsional vibration damper comprises at least two friction elements lying axially resiliently flat against one another. One of the friction elements is connected non-rotatably with the hub and the other friction element is connected non-rotatably with the friction lining carrier. One of the friction elements is held displaceably in the radial direction, along the friction face of the other friction element, on the hub or the friction lining carrier. By radial adjustment of the friction element the friction torque can be adjusted and construction tolerances of the clutch disc can be compensated.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: February 3, 1987
    Assignee: Fichtel & Sachs AG
    Inventors: Franz Hartig, Matthias Fischer, Dagwin Tomm