Patents by Inventor Martin Grehn

Martin Grehn 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: 20150316104
    Abstract: A pedestal bearing housing with a housing lower part and a housing upper part and a hole, which is formed by the housing lower part and the housing upper part, for receiving a bearing, with the housing lower part and the housing upper part each forming a circumferential section of the hole, and with a stand surface formed on a bottom side of the housing lower part. According to the invention, it is provided that the bottom side has a recess interrupting the stand surface, wherein the recess is described by an exclusively curved profile in a cross-sectional representation of the pedestal bearing housing perpendicular to a center axis of the hole.
    Type: Application
    Filed: September 6, 2013
    Publication date: November 5, 2015
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Waldemar Schulz, Martin Grehn
  • Patent number: 8956052
    Abstract: A sealed anti-friction bearing (1), including an annular sealing washer (11, 12) which seals a rolling-body chamber (7) in the axial direction, wherein the sealing washer (11, 12) has a fastening section (14) for connecting it fixedly to a bearing ring (2) of the anti-friction bearing (1) so as to rotate with it, and wherein the sealing washer (11, 12) is anchored with its fastening section (14) in a circumferential groove (22) of the bearing ring. According to the invention, it is provided that the fastening section (14) has a first clamping element in the form of a barb (19) and a second clamping element in the form of an annular bead (20), and that the barb (19) and the bead (20) enter into a non-positive connection with oppositely lying surfaces of the groove (22).
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 17, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Felix Hofbauer, Rainer Schroder, Martin Grehn
  • Patent number: 8794841
    Abstract: A toroidal bearing (1) including a multiplicity of barrel-shaped rolling bodies (7) which roll about a bearing axis (8) between an outer ring (2) having a raceway (3) and an inner ring (4) having a raceway (5) is provided. According to the invention, on a circumferential surface (9) facing away from the raceway (3, 5) thereof, the outer ring (2) and/or the inner ring (4) has at least one lubricating groove (10), wherein the lubricating groove (10) is connected to the raceway (3, 5) via at least one lubricating bore (11).
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Rainer Schroder, Martin Grehn, Felix Hofbauer
  • Publication number: 20140086519
    Abstract: An anti-friction bearing, including a bearing ring (2), a bearing cage (5) for receiving at least one rolling body (4), a power supply unit (8) which is configured as a claw pole generator, wherein the claw pole generator (8) includes a first claw ring (10) with a sequence of first claws (11) and a second claw ring (12) which is offset in the circumferential direction of the bearing ring (2) and has a sequence of second claws, wherein the two claw rings (10, 12) surround an induction coil (9) encircling in the circumferential direction of the bearing ring (2), wherein the claws (11) of the two claw rings (10, 12) form, with a sequence of magnetic poles (14) encircling in the circumferential direction, magnetic circuits which surround the induction coil (9).
    Type: Application
    Filed: April 17, 2012
    Publication date: March 27, 2014
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Thomas Rink, Werner Roman, Heinz Theumer, Martin Grehn, Henri van der Knokke, Karl Muller
  • Publication number: 20140079350
    Abstract: A bearing, in particular rolling contact bearing (1), having a first bearing ring (2), a second bearing ring (3) and an energy production unit (8) designed as a claw pole generator, wherein the claw pole generator (8) includes a first claw ring (10) with a sequence of first claws (11) and a second claw ring (12) which is offset in the revolving direction of the axis of rotation (6) and has a sequence of second claws, wherein the two claw rings (10, 12) surround an induction coil (9) encircling the axis of rotation (6), wherein the claws (11) of the two claw rings (10, 12) together with a sequence of magnetic poles (14) encircling the axis of rotation (6) form magnetic circuits surrounding the induction coil (9).
    Type: Application
    Filed: April 17, 2012
    Publication date: March 20, 2014
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Thomas Rink, Werner Roman, Heinz Theumer, Martin Grehn, Henri van der Knokke, Karl Muller
  • Publication number: 20130272639
    Abstract: A toroidal bearing (1) including a multiplicity of barrel-shaped rolling bodies (7) which roll about a bearing axis (8) between an outer ring (2) having a raceway (3) and an inner ring (4) having a raceway (5) is provided. According to the invention, on a circumferential surface (9) facing away from the raceway (3, 5) thereof, the outer ring (2) and/or the inner ring (4) has at least one lubricating groove (10), wherein the lubricating groove (10) is connected to the raceway (3, 5) via at least one lubricating bore (11).
    Type: Application
    Filed: November 18, 2011
    Publication date: October 17, 2013
    Inventors: Rainer Schroder, Martin Grehn, Felix Hofbauer
  • Publication number: 20130216171
    Abstract: A sealed anti-friction bearing (1), including an annular sealing washer (11, 12) which seals a rolling-body chamber (7) in the axial direction, wherein the sealing washer (11, 12) has a fastening section (14) for connecting it fixedly to a bearing ring (2) of the anti-friction bearing (1) so as to rotate with it, and wherein the sealing washer (11, 12) is anchored with its fastening section (14) in a circumferential groove (22) of the bearing ring. According to the invention, it is provided that the fastening section (14) has a first clamping element in the form of a barb (19) and a second clamping element in the form of an annular bead (20), and that the barb (19) and the bead (20) enter into a non-positive connection with oppositely lying surfaces of the groove (22).
    Type: Application
    Filed: October 28, 2011
    Publication date: August 22, 2013
    Inventors: Felix Hofbauer, Rainer Schroder, Martin Grehn
  • Publication number: 20120008892
    Abstract: An antifriction bearing for mounting a rotor of a wind power plant, which is easy to mount and has satisfactory functional properties. The antifriction bearing has an outer ring, an inner ring and having a plurality of rolling bodies which are arranged between the inner ring and the outer ring. The outer ring has at least two segments in a circulation direction. One of the segments is a high load segment that extends over a region in the circulation direction greater than 180°, preferably greater than 200° and, in particular, greater than 250°, and/or the separating gaps between the segments are arranged in a region in the circulation direction of less than 180°, preferably less than 160° and, in particular, less than 110°.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 12, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventor: Martin GREHN
  • Patent number: 8043008
    Abstract: The invention relates to a rolling-element bearing unit for rotatably bearing two components, nested into each other, which rotate about separate rotational axes that are at an angle to each other, especially the roll core and roll sleeve of a width stretching roll for a paper machine. The rolling-element bearing unit according to the invention comprises an outer rolling-element bearing for rotationally bearing the outer component, a pivoting bearing carrying the outer rolling-element bearing and allowing adjustment of the angle of the outer rolling-element bearing, an angularly adjustable inner rolling-element bearing for rotationally bearing the inner component, and an eccentric which consist of an inner and an outer eccentric ring via which eccentric rings the centers of the two rolling-element bearings can be adjusted in relation to each other.
    Type: Grant
    Filed: August 25, 2007
    Date of Patent: October 25, 2011
    Assignee: Schaeffler KG
    Inventor: Martin Grehn
  • Publication number: 20100008612
    Abstract: The invention relates to a rolling-element bearing unit for rotatably bearing two components, nested into each other, which rotate about separate rotational axes that are at an angle to each other, especially the roll core and roll sleeve of a width stretching roll for a paper machine. The rolling-element bearing unit according to the invention comprises an outer rolling-element bearing for rotationally bearing the outer component, a pivoting bearing carrying the outer rolling-element bearing and allowing adjustment of the angle of the outer rolling-element bearing, an angularly adjustable inner rolling-element bearing for rotationally bearing the inner component, and an eccentric which consist of an inner and an outer eccentric ring via which eccentric rings the centers of the two rolling-element bearings can be adjusted in relation to each other.
    Type: Application
    Filed: August 25, 2007
    Publication date: January 14, 2010
    Applicant: SCHAEFFLER KG
    Inventor: Martin Grehn
  • Patent number: 7427163
    Abstract: The invention relates to a self-aligning antifriction bearing (1) comprising at least one first row (9) of rolling bodies (11) and a second row (10) of rolling bodies (11) adjacent to said first row (9) of rolling bodies (11), whereby every row (9, 10) comprises balls (5) and rollers (6) disposed peripherally about a central axis of the self-aligning antifriction bearing (1). The bearing is characterized in that the balls (5) have a greater outer diameter (28) than the rollers (6).
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: September 23, 2008
    Assignee: Schaeffler KG
    Inventors: Rainer Schöder, Martin Grehn
  • Patent number: 7338213
    Abstract: A barrel-shaped bearing which comprises an external ring and an internal ring, at least one row of barrel-shaped rolling bodies arranged therebetween, the cage in the form of a disk which turns together with the rolling bodies, engages inside a peripheral groove around each rolling body and is provided with recesses corresponding to the number of the rolling bodies of the one row arranged on the external periphery of the cage. The total rolling surface of the internal ring is embodied such that the cross section thereof is concave along the entire axial length of the rolling body. The smallest distance between both sides of the cavity of the disk-shaped cage in the area of the external periphery thereof is less than the diameter of a rolling body in the area of the peripheral groove thereof.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: March 4, 2008
    Assignee: FAG Kugelfischer AG
    Inventors: Rainer Schröder, Martin Grehn
  • Publication number: 20070189652
    Abstract: The invention relates to a pin-cage, for a twin-row self-aligning roller bearing, essentially comprising an inner ring, an outer ring and several rollers, running adjacently between the above, in two rows on the running tracks of the inner ring and the outer ring. A pin cage is arranged between the roller rows embodied with pins on the axial faces thereof at even spaces with a stepped offset. The rollers of both roller rows each comprise an axial through drilling, by means of which the above are rotatably mounted on the pins of the pin-cage. According to the invention, the pin-cage is embodied as a pre-assembled component without a lateral disc and pins feely extending axially from the above, the length of which is less than the length of the through drillings in the rollers, whereby lubrication of the rollers is achieved by centrifugal force from the free front face thereof through the outer opening of the through drilling thereof.
    Type: Application
    Filed: March 18, 2005
    Publication date: August 16, 2007
    Applicant: SCHAEFFLER KG
    Inventors: Rainer Schroeder, Martin Grehn
  • Publication number: 20070053624
    Abstract: The invention relates to a self-aligning antifriction bearing (1) comprising at least one first row (9) of rolling bodies (11) and a second row (10) of rolling bodies (11) adjacent to said first row (9) of rolling bodies (11), whereby every row (9, 10) comprises balls (5) and rollers (6) disposed peripherally about a central axis of the self-aligning antifriction bearing (1).
    Type: Application
    Filed: August 17, 2004
    Publication date: March 8, 2007
    Inventors: Rainer Schoder, Martin Grehn
  • Publication number: 20060165333
    Abstract: A barrel-shaped bearing which comprises an external ring and an internal ring, at least one row of barrel-shaped rolling bodies arranged therebetween, the cage in the form of a disk which turns together with the rolling bodies, engages inside a peripheral groove around each rolling body and is provided with recesses corresponding to the number of the rolling bodies of the one row arranged on the external periphery of the cage. The total rolling surface of the internal ring is embodied such that the cross section thereof is concave along the entire axial length of the rolling body. The smallest distance between both sides of the cavity of the disk-shaped cage in the area of the external periphery thereof is less than the diameter of a rolling body in the area of the peripheral groove thereof.
    Type: Application
    Filed: November 21, 2003
    Publication date: July 27, 2006
    Inventors: Rainer Schroder, Martin Grehn
  • Patent number: 6926446
    Abstract: Radial self-aligning rolling bearing including an outer ring, an inner ring, and balls which are arranged to roll in the raceways of the rings, and also spherical rollers together as rolling elements, which are all guided in a cage. The balls are larger in diameter than the spherical rollers, so that the balls exclusively take up the entire bearing load when the bearing load is small and both the balls and the rollers take up a larger bearing load.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: August 9, 2005
    Assignee: FAG Kugelfischer AG & Co. KG
    Inventors: Martin Grehn, Rainer Schroder
  • Publication number: 20040096132
    Abstract: Radial self-aligning rolling bearing including an outer ring, an inner ring, and balls which are arranged to roll in the raceways of the rings, and also spherical rollers together as rolling elements, which are all guided in a cage. The balls are larger in diameter than the spherical rollers, so that the balls exclusively take up the entire bearing load when the bearing load is small and both the balls and the rollers take up a larger bearing load.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 20, 2004
    Applicant: FAG Kugelfischer AG & Co. KG
    Inventors: Martin Grehn, Rainer Schroder
  • Patent number: 6400136
    Abstract: A device for measuring rotation speed or rotation direction of a rolling-contact bearing which is attached to the bearing. The bearing has an inner and an outer bearing ring with a row of bearing rolling elements between them. A respective sensor unit is at each axial end of the bearing rings. Each sensor unit includes a pulse transmitter ring on one of the inner and outer bearing rings and a sensor on the other of the bearing rings, and the sensor units operate independently. Each sensor unit is force-fit or positively connected to one of the bearing rings, with the pulse transmitter ring connected to one of the bearing rings and the sensor to the other bearing ring.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: June 4, 2002
    Inventors: Martin Grehn, Henri van der Knokke
  • Patent number: 6296395
    Abstract: A self-aligning roller bearing includes an external ring with one curved external track, an internal ring with two curved internal tracks, two rows of rollers disposed between the external and internal rings, and a guide ring. The guide ring is located between the rows of rollers and is preferably configured as an circular annular disk. The guide ring has a rectangular cross section with the center line of the cross section running parallel to the bearing axis. The guide ring may also be dimensioned in such a way that the rollers are axially prestressed. The front faces of the rollers which face the guide ring are configured in a manner that the front faces only touch the guide ring at one point.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: October 2, 2001
    Assignee: FAG OEM und Handel AG
    Inventors: Armin Brand, Werner Ganss, Martin Grehn, Michael Weigand
  • Patent number: 5702187
    Abstract: An antifriction bearing having one or two rows of rolling bodies has at least one guide ring guided on the outside ring race for guidance of the rollers and/or of the separator. The guide ring comprises two partial circumference ring segments which are arranged loosely between or adjacent one or each of the rows of rolling bodies and are held in form-locked manner in the spherical surface of the outer ring due to resilience of the ring segments.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: December 30, 1997
    Assignee: FAG OEM und Handel AG
    Inventors: Michael Weigand, Werner Ganss, Martin Grehn