Patents by Inventor Tobias Mederer

Tobias Mederer 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: 9080638
    Abstract: An unbalanced shaft for compensating for inertial forces and/or mass moments of inertia of an internal combustion engine (1), having an unbalanced portion (8), the center of mass of which extends eccentric to the axis of rotation (11) of the unbalanced shaft (6) for generating the shaft imbalance (7), a bearing portion (9) adjacent to the unbalanced portion, and a bearing race (10) joined thereto, the outer surface (13) of which serves as a race for the rolling elements of a roller bearing rotationally supporting the unbalanced shaft, and the inner surface (12) of which retracts radially relative to the outer circumscribed circle (14) of the unbalanced portion in a bearing circumference region running in the direction of the imbalance.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: July 14, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Solfrank, Tobias Mederer
  • Publication number: 20140311280
    Abstract: An unbalanced shaft for compensating for inertial forces and/or mass moments of inertia of an internal combustion engine (1), having an unbalanced portion (8), the center of mass of which extends eccentric to the axis of rotation (11) of the unbalanced shaft (6) for generating the shaft imbalance (7), a bearing portion (9) adjacent to the unbalanced portion, and a bearing race (10) joined thereto, the outer surface (13) of which serves as a race for the rolling elements of a roller bearing rotationally supporting the unbalanced shaft, and the inner surface (12) of which retracts radially relative to the outer circumscribed circle (14) of the unbalanced portion in a bearing circumference region running in the direction of the imbalance.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 23, 2014
    Applicant: Schaeffler Technologies AG & CO. KG
    Inventors: Peter Solfrank, Tobias Mederer
  • Patent number: 8757889
    Abstract: A rolling element bearing, in particular a roller/needle bearing, having a cage including at least one inner cage and at least one outer supporting cage, said cages having windows (3) which are adapted to the rolling elements (8) and have lateral end rims (4) connecting a plurality of windows (3) and crossbars and in which the rolling elements (8) are guided and secured from falling out. Either the inner cage and the supporting cage are configured as a split inner cage ring and/or a split supporting cage ring and the rings can be attached to each other at the ends or the inner cage and the supporting cage are configured as inner cage shells and/or supporting cage shells and the shells can be attached to each other at the ends.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: June 24, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jesko Jaekel, Tobias Mederer, Matthias Pitz
  • Patent number: 8555848
    Abstract: A mass balancing mechanism and method of assembly of the same is provided. The mass balancing mechanism compensates mass forces and/or mass moments of inertia of an internal combustion engine and includes two compensation shafts and a traction drive which connects a driven pinion of the crankshaft to drive pinions of the compensation shafts through a traction mechanism. Rotation of the compensation shafts is achieved through a spur gearing with two meshing spur gears arranged between one of the drive pinions and the associated compensation shaft, one of the spur gears being connected to the one drive pinion and the other of the spur gears being connected to the associated compensation shaft. For adjusting the tooth flank lash between the spur gears, an eccentric bearing having a rotationally fixable eccentric raceway is provided by the invention.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: October 15, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Solfrank, Tobias Mederer, Alexander Tasche
  • Publication number: 20130177271
    Abstract: A rolling element bearing, in particular a roller/needle bearing, having a cage including at least one inner cage and at least one outer supporting cage, said cages having windows (3) which are adapted to the rolling elements (8) and have lateral end rims (4) connecting a plurality of windows (3) and crossbars and in which the rolling elements (8) are guided and secured from falling out. Either the inner cage and the supporting cage are configured as a split inner cage ring and/or a split supporting cage ring and the rings can be attached to each other at the ends or the inner cage and the supporting cage are configured as inner cage shells and/or supporting cage shells and the shells can be attached to each other at the ends.
    Type: Application
    Filed: July 7, 2011
    Publication date: July 11, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Jesko Jaekel, Tobias Mederer, Matthias Pitz
  • Publication number: 20130004110
    Abstract: A bearing ring includes a ring element having at least two grooves which extend from one axial side to the other axial side of the ring element and form predetermined breaking lines for cracking the ring element. The ring element is in the form of a sleeve produced by deep-drawing, wherein the grooves are also machined in during the deep-drawing of the sleeve.
    Type: Application
    Filed: February 3, 2011
    Publication date: January 3, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Wolfram Kruhoeffer, Tobias Mederer, Oliver Graf-Goller
  • Patent number: 8312855
    Abstract: A mass balancing device (1a, 1b) for a reciprocating piston internal combustion engine is provided, having a first balancing shaft (2a, 2b) and a second balancing shaft (3a, 3b) disposed in the first balancing shaft coaxially thereto. The first balancing shaft (2a, 2b) has at least one bearing point (6a, 7a, 6b, 7b) for a first rolling bearing (16) and the second balancing shaft (3a, 3b) has at least one bearing point (8a, 9a, 8b, 9b) for a second rolling bearing (17). The rolling bearings radially support the balancing shafts in the reciprocating piston internal combustion engine. At least one of the bearing locations is designed as a hollow cylinder having an outer shell surface serving as the bearing seat for the first rolling bearing and an inner shell surface serving as the bearing seat for the second rolling bearing, such that the first rolling bearing and the second rolling bearing overlap one another axially.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: November 20, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Tobias Mederer
  • Publication number: 20110155089
    Abstract: A mass balancing device (1a, 1b) for a reciprocating piston internal combustion engine is provided, having a first balancing shaft (2a, 2b) and a second balancing shaft (3a, 3b) disposed in the first balancing shaft coaxially thereto. The first balancing shaft (2a, 2b) has at least one bearing point (6a, 7a, 6b, 7b) for a first rolling bearing (16) and the second balancing shaft (3a, 3b) has at least one bearing point (8a, 9a, 8b, 9b) for a second rolling bearing (17). The rolling bearings radially support the balancing shafts in the reciprocating piston internal combustion engine. At least one of the bearing locations is designed as a hollow cylinder having an outer shell surface serving as the bearing seat for the first rolling bearing and an inner shell surface serving as the bearing seat for the second rolling bearing, such that the first rolling bearing and the second rolling bearing overlap one another axially.
    Type: Application
    Filed: July 18, 2008
    Publication date: June 30, 2011
    Applicant: SCHAEFFLER KG
    Inventor: Tobias Mederer
  • Publication number: 20110083632
    Abstract: A mass balancing mechanism and a method of assembly of the same is provided. The mass balancing mechanism serves to compensate mass forces and/or mass moments of inertia of an internal combustion engine and includes two compensation shafts (1, 2) rotating in opposite directions and further includes a traction drive which connects a driven pinion (5) of the crankshaft (3) of the internal combustion engine to drive pinions (6, 7) of the compensation shafts through a chain (4) or a toothed belt. Rotation of the compensation shafts in opposite directions is achieved through a spur gearing (8) with two meshing spur gears (9, 10) arranged between one of the drive pinions and the associated compensation shaft (1), one of the spur gears being connected rotationally fast to the one drive pinion and the other of the spur gears being connected rotationally fast to the associated compensation shaft.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Peter Solfrank, Tobias Mederer, Alexander Tasche