Patents by Inventor Tomas Smetana

Tomas Smetana 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).

  • Publication number: 20100126817
    Abstract: Example aspects of the present invention broadly comprise at least two concentric rings with complementary ramped surfaces, at least one of the rings being rotatable relative to another one of the rings so that contact is made at the ramped surfaces. The complementary ramped surfaces form respective circumferences of the rings. At least one of the ramped surfaces may have a sinusoidal profile, or a profile forming at least one of a straight line, concave, or convex. In some example embodiments of the invention, a first one of the rings is a coupling member and a second one of the rings is a tubular slipper with a friction surface radially opposite of the ramped surface. The tubular slipper is arranged to radially expand or contract upon contacting the coupling member.
    Type: Application
    Filed: October 22, 2009
    Publication date: May 27, 2010
    Applicant: Schaeffler KG
    Inventors: TOMAS SMETANA, Brian Lee
  • Publication number: 20100101911
    Abstract: A positively locking overrunning clutch, which has a damping device, comprises a drive input element and a drive output element and also at least one blocking element which blocks a rotation of the drive output element relative to the drive input element in a first rotational direction and enables the rotation in the opposite rotational direction. The blocking element has two clamping rings which are pivotable relative to one another and damped with respect to one another.
    Type: Application
    Filed: October 28, 2009
    Publication date: April 29, 2010
    Applicant: SCHAEFFLER KG
    Inventor: Tomas SMETANA
  • Publication number: 20100040318
    Abstract: A clamping roller freewheel, which has an inner ring, an outer ring and clamping rollers arranged between the inner ring and outer ring. The clamping rollers interact, in each case, with one clamping ramp formed on the outer circumference of the inner ring. The clamping rollers are surrounded by an elastically expandable protective ring which is concentric with respect to the freewheel axis. Retaining lugs prevent the protective ring from being driven in rotation by the outer ring in idle running operation. In this way, the outer ring is prevented from grinding against the clamping rollers, and the clamping rollers are prevented from being driven in rotation, with the resulting wear to the clamping ramps, in idle running operation.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 18, 2010
    Applicant: SCHAEFFLER KG
    Inventor: Tomas SMETANA
  • Patent number: 7624645
    Abstract: The invention relates to a compensation apparatus for compensating for thermally induced relative axial positional changes between two components, having a first compensation part which brings about an axial temperature-compensating movement of one of the compensation parts via a conical sliding face in a corresponding recess of a second compensation part if the radial extent of at least one of the compensation parts changes in a temperature-induced manner. In order to optimize the compensation capability of this apparatus, and to make it as far as possible independent of production tolerances of its installation surroundings with particularly simple means, there is provision for at least one compensation part to have a joint with a joint width which is variable during operation and imparts mechanical radial spring properties to the compensation part.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: December 1, 2009
    Assignee: Schaeffler KG
    Inventor: Tomas Smetana
  • Patent number: 7527584
    Abstract: Subassembly of at least two machine parts, the outer machine part, in particular a tensioning roller with a running disk made of steel being fastened with its internal circumferential surface on an external circumferential surface of the inner machine part a raceway ring of a rolling bearing, by means of compression connection, wherein the overlap of the internal diameter of the outer machine part, in particular the running disk, and of the external diameter of the inner machine part, in particular raceway ring, and the dimensions of the machine parts and their materials are selected such that the outer machine part, in particular the running disk, is deformed into the plastic range of material strain.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: May 5, 2009
    Assignee: Ina-Schaeffler KG
    Inventors: Tomas Smetana, Rainer Schenk
  • Publication number: 20080277238
    Abstract: An overrunning clutch damping body (1) for an overrunning clutch comprises a first contact surface (2) and a second contact surface (3) for contacting respective clamping raceways. The curvature of the contact surfaces (2, 3) deviates from zero in each direction. Each of the contact surfaces (2, 3) is configured symmetrically both to a first plane (E1) extending normal to the axis of rotation of the overrunning clutch and to a second plane (E2) that is perpendicular to the first plane (E1), and the shape of the first contact surface (2) corresponds to the shape of the second contact surface (3).
    Type: Application
    Filed: June 10, 2008
    Publication date: November 13, 2008
    Inventors: Horst Doppling, Swen Dorrie, Tomas Smetana
  • Publication number: 20080257056
    Abstract: The invention relates to a compensation apparatus for compensating for thermally induced relative axial positional changes between two components, having a first compensation part (11) which brings about an axial temperature-compensating movement of one of the compensation parts (10) via a conical sliding face (23) in a corresponding recess (16) of a second compensation part (10) if the radial extent of at least one of the compensation parts (10, 11) changes in a temperature-induced manner. In order to optimize the compensation capability of this apparatus, and to make it as far as possible independent of production tolerances of its installation surroundings with particularly simple means, there is provision for at least one compensation part (10) to have a joint (13) with a joint width (15) which is variable during operation and imparts mechanical radial spring properties to the compensation part (10).
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Applicant: SCHAEFFLER KG
    Inventor: Tomas SMETANA
  • Patent number: 7418939
    Abstract: The invention provides a motorcycle having a frame, an engine coupled to the frame, and a crankshaft assembly. The crankshaft assembly includes a first flywheel half having an aperture, a crank pin including a first end portion, a second end portion opposite the first end portion, and a bearing surface between the first and second end portions. The first end portion is press-fit into the aperture of the first flywheel half. The first end portion, the second end portion, and the bearing surface are coated with a friction enhancer. A bearing is positioned at least partially onto the bearing surface, and a connecting rod has an aperture that at least partially receives the bearing.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: September 2, 2008
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Bernard F. Enright, William K. Davis, Thomas A. Lanser, William Lackas, Jon Janke, Jennifer M. Sampson, Tomas Smetana
  • Publication number: 20080078640
    Abstract: A sprag for a sprag-type freewheel clutch having a profile composed of multiple profile sections, the sprag having at least the profile sections of an inner engagement curve, an outer engagement curve and a first and a second lateral curve, characterized in that the outer and inner engagement curves (7, 8) each form a component of a logarithmic spiral (11).
    Type: Application
    Filed: December 13, 2005
    Publication date: April 3, 2008
    Inventor: Tomas Smetana
  • Publication number: 20080011265
    Abstract: The invention provides a motorcycle having a frame, an engine coupled to the frame, and a crankshaft assembly. The crankshaft assembly includes a first flywheel half having an aperture, a crank pin including a first end portion, a second end portion opposite the first end portion, and a bearing surface between the first and second end portions. The first end portion is press-fit into the aperture of the first flywheel half. The first end portion, the second end portion, and the bearing surface are coated with a fiction enhancer. A bearing is positioned at least partially onto the bearing surface, and a connecting rod has an aperture that at least partially receives the bearing.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 17, 2008
    Inventors: Bernard F. Enright, William K. Davis, Thomas A. Lanser, William Lackas, Jon Janke, Jennifer M. Sampson, Tomas Smetana
  • Publication number: 20040192527
    Abstract: Subassembly of at least two machine parts, the outer machine part, in particular a tensioning roller with a running disk made of steel being fastened with its internal circumferential surface on an external circumferential surface of the inner machine part a raceway ring of a rolling bearing, by means of compression connection, wherein the overlap of the internal diameter of the outer machine part, in particular the running disk, and of the external diameter of the inner machine part, in particular raceway ring, and the dimensions of the machine parts and their materials are selected such that the outer machine part, in particular the running disk, is deformed into the plastic range of material strain.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 30, 2004
    Applicant: INA-SCHAEFFLER KG
    Inventors: Tomas Smetana, Rainer Schenk