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).
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Publication number: 20150316104Abstract: 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: ApplicationFiled: September 6, 2013Publication date: November 5, 2015Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventors: Waldemar Schulz, Martin Grehn
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Patent number: 8956052Abstract: 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: GrantFiled: October 28, 2011Date of Patent: February 17, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Felix Hofbauer, Rainer Schroder, Martin Grehn
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Patent number: 8794841Abstract: 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: GrantFiled: November 18, 2011Date of Patent: August 5, 2014Assignee: Schaeffler Technologies GmbH & Co. KGInventors: Rainer Schroder, Martin Grehn, Felix Hofbauer
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Publication number: 20140086519Abstract: 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: ApplicationFiled: April 17, 2012Publication date: March 27, 2014Applicant: Schaeffler Technologies AG & Co. KGInventors: Thomas Rink, Werner Roman, Heinz Theumer, Martin Grehn, Henri van der Knokke, Karl Muller
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Publication number: 20140079350Abstract: 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: ApplicationFiled: April 17, 2012Publication date: March 20, 2014Applicant: Schaeffler Technologies AG & Co. KGInventors: Thomas Rink, Werner Roman, Heinz Theumer, Martin Grehn, Henri van der Knokke, Karl Muller
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Publication number: 20130272639Abstract: 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: ApplicationFiled: November 18, 2011Publication date: October 17, 2013Inventors: Rainer Schroder, Martin Grehn, Felix Hofbauer
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Publication number: 20130216171Abstract: 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: ApplicationFiled: October 28, 2011Publication date: August 22, 2013Inventors: Felix Hofbauer, Rainer Schroder, Martin Grehn
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Publication number: 20120008892Abstract: 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: ApplicationFiled: July 8, 2011Publication date: January 12, 2012Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KGInventor: Martin GREHN
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Patent number: 8043008Abstract: 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: GrantFiled: August 25, 2007Date of Patent: October 25, 2011Assignee: Schaeffler KGInventor: Martin Grehn
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Publication number: 20100008612Abstract: 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: ApplicationFiled: August 25, 2007Publication date: January 14, 2010Applicant: SCHAEFFLER KGInventor: Martin Grehn
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Patent number: 7427163Abstract: 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: GrantFiled: August 17, 2004Date of Patent: September 23, 2008Assignee: Schaeffler KGInventors: Rainer Schöder, Martin Grehn
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Patent number: 7338213Abstract: 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: GrantFiled: November 21, 2003Date of Patent: March 4, 2008Assignee: FAG Kugelfischer AGInventors: Rainer Schröder, Martin Grehn
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Publication number: 20070189652Abstract: 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: ApplicationFiled: March 18, 2005Publication date: August 16, 2007Applicant: SCHAEFFLER KGInventors: Rainer Schroeder, Martin Grehn
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Publication number: 20070053624Abstract: 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: ApplicationFiled: August 17, 2004Publication date: March 8, 2007Inventors: Rainer Schoder, Martin Grehn
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Publication number: 20060165333Abstract: 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: ApplicationFiled: November 21, 2003Publication date: July 27, 2006Inventors: Rainer Schroder, Martin Grehn
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Patent number: 6926446Abstract: 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: GrantFiled: November 13, 2003Date of Patent: August 9, 2005Assignee: FAG Kugelfischer AG & Co. KGInventors: Martin Grehn, Rainer Schroder
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Publication number: 20040096132Abstract: 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: ApplicationFiled: November 13, 2003Publication date: May 20, 2004Applicant: FAG Kugelfischer AG & Co. KGInventors: Martin Grehn, Rainer Schroder
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Patent number: 6400136Abstract: 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: GrantFiled: December 2, 1998Date of Patent: June 4, 2002Inventors: Martin Grehn, Henri van der Knokke
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Patent number: 6296395Abstract: 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: GrantFiled: March 22, 2000Date of Patent: October 2, 2001Assignee: FAG OEM und Handel AGInventors: Armin Brand, Werner Ganss, Martin Grehn, Michael Weigand
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Patent number: 5702187Abstract: 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: GrantFiled: January 23, 1997Date of Patent: December 30, 1997Assignee: FAG OEM und Handel AGInventors: Michael Weigand, Werner Ganss, Martin Grehn