Temperature Compensation Patents (Class 384/557)
  • Patent number: 11739663
    Abstract: A flow path assembly for a gas turbine engine is provided. The flow path assembly may include an outer casing comprising a metal material having a first coefficient of thermal expansion, a ceramic structure comprising a ceramic material having a second coefficient of thermal expansion, and a mounting component attached on a first end to the outer casing and attached on a second end to the ceramic structure. The mounting component may be constructed from at least two materials transitioning from the first end to the second end such that the coefficient of thermal expansion is different at the first end than the second end.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: August 29, 2023
    Assignee: General Electric Company
    Inventors: Daniel Patrick Kerns, Mark Eugene Noe, Dennis Paul Dry, Brandon ALlanson Reynolds
  • Patent number: 11351557
    Abstract: A housing for a centrifugal separator is disclosed, wherein the centrifugal separator is configured to separate a liquid phase from crankcase gases of an internal combustion engine using a rotor. The housing includes a housing body forming a separation chamber, an opening in the housing body, a bearing retainer arranged at the opening, and a bearing inserted into the bearing retainer. The bearing is configured to receive a rotor shaft extending into the separation chamber. The bearing retainer includes a bearing seat portion provided with a number of plastically deformed zones retaining the bearing in the bearing retainer. A centrifugal separator and a method of retaining a bearing of a rotor shaft in a housing for a centrifugal separator are also disclosed.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 7, 2022
    Assignee: ALFDEX AB
    Inventor: Anders Örtegren
  • Patent number: 11326472
    Abstract: A turbine engine comprises a rotor shaft and a roller bearing supporting the shaft in rotation along an axis. The bearing comprises an inner ring, an outer ring, and rolling elements engaged between the inner and outer rings. The inner ring has a first axial end annular portion that is more exposed to heat during operation than a second axial end annular portion thereof. The turbine engine further comprises an oil injection device configured to supply the rolling elements with oil for lubrication of the latter. In order to homogenise the temperature of the inner ring, the latter comprises through-holes formed in the first axial end annular portion and distributed around the axis in order to allow for a circulation of oil coming from the oil injection device through the first axial end annular portion, thereby providing additional cooling to the first end annular portion.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: May 10, 2022
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Catherine Pikovsky, Thomas Gabriel Elie Gatteau, Aude Simonet
  • Patent number: 11085519
    Abstract: A transmission arrangement for a motor vehicle, having a transmission housing, a first pinion shaft, and a second pinion shaft, which is arranged coaxially to the first pinion shaft, and having a first transmission output shaft and a second transmission output shaft. The first pinion shaft is mounted by a first bearing, and the second pinion shaft is mounted by a second bearing, on the transmission housing, and a first pinion meshing with a first crown gear arranged on the first transmission output shaft is arranged in a rotationally fixed manner on the first pinion shaft, and a second pinion meshing with a second crown gear arranged on the second transmission output shaft is arranged in a rotationally fixed manner on the second pinion shaft.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: August 10, 2021
    Assignee: AUDI AG
    Inventors: Christian Meixner, Carsten Trautmann
  • Patent number: 10415644
    Abstract: A rotary machine includes rotating shaft supported with respect to an end wall of a housing. The rotary machine includes a bearing that is attached to the rotating shaft and rotatably supports the rotating shaft to the housing, a cylindrical holding portion that is provided in the end wall of the housing and extends in an axial direction of the rotating shaft, and a cylindrical bearing sleeve that is fixed to the holding portion and surrounds the bearing. The bearing sleeve includes a surrounding portion that surrounds the bearing and a protruding portion that protrudes from the surrounding portion toward the end wall. The protruding portion and the holding portion overlap each other in a radial direction of the rotating shaft, and the bearing sleeve is fixed to the end wall by fitting the protruding portion into the holding portion.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: September 17, 2019
    Assignee: IHI Corporation
    Inventors: Kuniaki Iizuka, Takashi Yoshida, Tatsumi Inomata, Takuya Ozasa, Kouta Kimachi
  • Patent number: 10364839
    Abstract: A bearing assembly is configured to rotatably support a first machine part in a second machine part and includes first and second rolling-element bearings. The rolling-element bearings are installed in the bearing assembly with an axial preload or an axial clearance. The second machine part includes a first conical abutment surface, and the first rolling-element bearing includes a bearing ring having a second conical abutment surface facing the first conical abutment surface of the second machine part. An intermediate ring is disposed between and abuts the first and second conical abutment surfaces. The bearing ring and the second machine part are metal, and the intermediate ring is formed from a material that has a higher coefficient of thermal expansion than that of the bearing ring and second machine part.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 30, 2019
    Assignee: Aktiebolaget SKF
    Inventors: Christian Knoche, Thilo Beck, Andreas Klopf
  • Patent number: 9850949
    Abstract: A temperature compensation ring configured to compensate for changes in a temperature-dependent distance between two components includes a base body made from an elastic material and a first reinforcing body and a second reinforcing body, each of the first and second reinforcing bodies including a harder material than the material of the base body. The first and second reinforcing bodies are disposed at opposite end surfaces of the base body and partially define an outer periphery of the temperature compensation ring.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: December 26, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Rainer Spies
  • Patent number: 9447822
    Abstract: An outer bearing race for use in a generator housing includes a body having a radially inner surface for contacting bearings. The radially inner surface has a right side and a left side with a chamfer attaching to the right side of the radially inner surface for leading the bearings into contact with the radially inner surface. A right surface extends radially outwardly from the chamfer and a left surface extends radially outwardly from the left side. A ledge extends axially from the left surface and parallel and in register with the radially inner surface. A first angled surface extends radially outwardly from the right side surface and axially towards the left surface and a second angled surface extends radially outwardly from the ledge and axially towards the right side surface. A first extension extends radially outwardly from and attaches to the first angled surface and the second angled surface.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: September 20, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Gregory Alan Rittmeyer, Timothy R. Welch
  • Patent number: 8961028
    Abstract: A bearing assembly includes a hub element or housing element which has an accommodating bore for at least one rolling-element bearing, the rolling-element bearing being disposed with its outer ring in a press-fit arrangement in the accommodating bore, and the outer ring having at least one first axial region along at least one raceway of the outer ring and at least one second axial region extending outside the raceway. To ensure a proper fit of the bearing ring in the hub or housing element over a wide range of operating temperatures, the receiving bore and the outer circumference of the outer ring are configured such that at the ambient temperature the radial clamping force between accommodating bore and outer ring in the first region is smaller than in the second region.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Thilo Beck, Rico Dittmar
  • Patent number: 8905643
    Abstract: A thermal compensation element which has an inner ring, an outer ring, and a washer. The washer is arranged within the inner ring and the outer ring is mounted over the inner ring, encapsulating the washer, which can be a split wave spring. The inner ring and the outer ring each have retention features to ensure they are retained relative to each other. The thermal compensation, which is positioned between a housing or a shaft, can account for variations in loading and/or temperature that may occur to a bearing and a shaft system when the shaft and an associated component are made of different materials and have different coefficients of thermal expansion by ensuring a proper axial preload is maintained on the bearing.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: December 9, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Marion Jack Ince, Guihui Zhong, Robert Southam, Charles Schwab, Michael Turner, Brian Lee
  • Publication number: 20140334756
    Abstract: A bearing assembly includes two tapered roller bearings having inner and outer rings and tapered rollers therebetween. The inner rings are mounted to a first machine part, and the outer rings are mounted on an adapter sleeve on a second machine part. The adapter sleeve has a first end axially fixed relative to the second machine part and a second end axially spaced from an axial stop of the second machine part by an axial gap. At a non-operating temperature, such as 20° C., the gap has a width of about 30 ?m to 250 ?m, and at an operating temperature of over 50° C. the gap disappears and the second end contacts the axial stop. The width of the gap at the non-operating temperature is selected to produce a predetermined preload on the bearing assembly at the operating temperature.
    Type: Application
    Filed: March 22, 2012
    Publication date: November 13, 2014
    Inventors: Udo Krug, Armin Olschewski, Armin Schlereth, Arno Stubenrauch
  • Patent number: 8844711
    Abstract: A chain wheel arrangement for chain drives of mining machines, with a chain wheel shaft, with a chain wheel, with bearing shells receiving bearings for the chain wheel shaft, with a chain wheel-side sliding ring seal and with a bearing-side sliding ring seal. In order to improve the service life of the chain wheel arrangement, at least one of the bearings, preferably that of the movable bearing system, is arranged in a bearing bush which is arranged between the bearing shell and outer bearing ring and received in the bearing shell in an axially displaceable manner. The additional bearing bush allows the necessary gap between the rotating parts and the non-co-rotating, bearing shell-side parts to remain substantially constant and to this extent to become independent of the bearing play of the respective bearings.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: September 30, 2014
    Assignee: Caterpillar Global Mining Europe GmbH
    Inventor: Wolfgang Kruger
  • Patent number: 8690445
    Abstract: A rolling bearing arrangement, which has at least one angular contact rolling bearing arranged within a housing and at least one lash compensation element that is supported axially in one direction on the housing and is capable of being biased against a bearing ring of the angular contact rolling bearing with the bearing ring being axially movable relative to the housing, and a U-shaped ring which has two radially opposing legs directed in an axial direction. The U-shaped ring rendering the lash compensation element radially immovable by positive engagement while being guided on the bearing ring of the angular contact rolling bearing for axial displacement relative to the bearing ring, and the axial section of the bearing ring projecting axially between the legs of the ring profile.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 8, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Florian Doerrfuss, Thorsten Biermann, Fritz Wiesinger
  • Patent number: 8684608
    Abstract: A rolling bearing, which has at least one bearing ring and at least one lash compensation element possessing temperature-dependent extendibility arranged on the bearing ring. The rolling bearing has ring profile, which at least partially surrounds the lash compensation clement. The ring profile has at least one hollow cylindrical section oriented axially parallel to an axis of rotation of the rolling bearing and at least one radially oriented disk section. Also, at least one slit is formed in the ring profile.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: April 1, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Marion Jack Ince, Guihui Zhong
  • Patent number: 8678665
    Abstract: A bearing arrangement to reduce the effects of thermal expansion in a marine transmission includes a pinion gear thrust bearing, a clutch shaft thrust bearing, a shaft roller bearing and a thrust washer. The clutch shaft thrust bearing is retained on one end of a clutch shaft and the shaft roller bearing is retained on the other end of the clutch shaft. A pinion gear is rotatably retained on the clutch shaft. The pinion gear thrust bearing is retained on the pinion gear with a bearing retainer. The thrust washer is retained on the bearing retainer. An end of the clutch shaft thrust bearing rotates relative to the thrust washer and makes contact therewith. The length of thermal expansion in the transmission housing is limited to the distance between the opposing ends of the two thrust bearings.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: March 25, 2014
    Assignee: Twin Disc., Inc.
    Inventor: Andrew Clark
  • Patent number: 8591120
    Abstract: A rolling bearing which has at least one lash compensation element possessing temperature-dependent extendably arranged on one bearing ring of the rolling bearing. The lash compensation element is surrounded at least partially by an angular ring profile. The angular ring profile has at least one leg directed axially parallel to an axis of rotation of the angular contact roller bearing. The ring profile is retained by the leg by positive axial engagement for limited axial movement on the bearing ring such that the lash compensation element is supported by the ring profile by positive engagement so as to be radially immovable on the bearing ring while being guided for axial movement on the bearing ring.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 26, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Marion Jack Ince, Guihui Zhong
  • Patent number: 8529136
    Abstract: A ball bearing having external surfaces coated with ceramic materials is provided. The raceways of the ball bearing may advantageously be formed of metal such as stainless steel. The ceramic coating acts as an insulator increasing the resistance of the ball bearing to heat within the ball bearing environment. The balls within the raceway of the ball bearing may advantageously be coated with a lubricant to decrease friction in the ball bearing because the insulating ceramic coating prevents the environmental heat from causing the degradation of the lubricant.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: September 10, 2013
    Assignee: Wafertech, LLC
    Inventors: Xiao-Jun Liu, Mark Chou
  • Patent number: 8511902
    Abstract: A wheel bearing device for a motor vehicle, having an inner ring arrangement, formed for rotationally fixed reception of a first rotary partner, particularly an axle stump, or a shaft, an outer ring arrangement, which is connected and/or connectable and rotationally fixed with a second rotary partner, a multitude of rolling elements, which roll between the inner ring arrangement and the outer ring arrangement, so that inner ring arrangement and outer ring arrangement and/or the rotary partners are rotatable against each other, and an electric sensor device, which, using mechanical contact, is arranged and/or formed for detecting an operating status of the wheel bearing device. The sensor device has a stationary sensor element and a rotating sensor element, which can work together to form the mechanical contact. One of the sensor elements is connected with the inner ring arrangement without the interposition of the first rotary partner.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: August 20, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jens Heim, Christian Mock, Ralf Hund, Tilman Ulrich
  • Patent number: 8408807
    Abstract: A thermal compensation element that generates an optimal bearing pre-load. The thermal compensation element has a bearing housing with a recess, a bearing outer ring arranged at least partially within the recess, a bearing shaft with a bearing inner ring arranged axially inward of the bearing outer ring, a piston with an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring, and a fluid supply port. The port increases or decreases pressure at the piston via a pressurized medium, allowing adjustable axial forces applied to the end of the hearing shaft by the piston to generate optimal bearing pre-load conditions.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: April 2, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Jordan Miles
  • Patent number: 8403566
    Abstract: A rolling bearing includes rolling elements, an inner ring which includes a raceway surface on which the rolling elements roll on an outer circumference thereof, and an outer ring which includes a raceway surface on which the rolling elements roll and which receives a radial load and a load directed to one side of an axial direction from the rolling elements on an inner circumference thereof. A closure member for closing an inner circumferential side opening of the outer ring is formed integrally at an end portion of the outer ring which lies on the one side of the axial direction or the outer ring is fitted in a cylindrical portion of the closure member.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: March 26, 2013
    Assignee: JTEKT Corporation
    Inventors: Kanichi Koda, Tadashi Fukao
  • Patent number: 8356944
    Abstract: A bearing system (A) that supports a shaft (4) in a housing (2) includes two single row tapered roller bearings (6, 8) mounted in opposition. One of the bearings (8) compensates for thermal variations that would otherwise produce excessive preload in the system. It has a conventional cup (48) in the housing and tapered rollers (52) arranged in a single row along the raceway (54) of the cup. It also has a compensating assembly (50, 100, 110, 120, 130) on the shaft, and it includes a ribless cone (60) having a raceway (70) around which the rollers are organized, an axially displaceable rib ring (64) for positioning the rollers, a spring (66) for urging the rib ring against a stop surface (74) on the cone, and a compensating ring (68) formed from a material having a high coefficient of thermal expansion for displacing the rib ring against the force exerted by the spring when the temperature of the compensating assembly exceeds a prescribed set point temperature so as to reduce preload in the bearing system.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: January 22, 2013
    Assignee: The Timken Company
    Inventors: Gerald P. Fox, Bruce C. Burner
  • Publication number: 20120269473
    Abstract: A thermal compensation element that generates an optimal bearing pre-load. The thermal compensation clement has a bearing housing with a recess, a bearing outer ring arranged at least partially within the recess, a bearing shaft with a bearing inner ring arranged axially inward of the bearing outer ring, a piston with an outer sealing ring fixed in the recess axially between the bearing housing and the bearing outer ring, and a fluid supply port. The port increases or decreases pressure at the piston via a pressurized medium, allowing adjustable axial forces applied to the end of the hearing shaft by the piston to generate optimal bearing pre-load conditions.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 25, 2012
    Inventor: Jordan MILES
  • Patent number: 8256966
    Abstract: The invention is directed to a roller bearing arrangement comprising two rings arranged mutually concentrically and at least regionally inside each other, and comprising a gap between these rings, so that they are rotatable in opposite directions about an imaginary axis at the center of the rings and approximately perpendicular to the ring plane, wherein disposed in the region of a gap portion situated between the rings and surrounding the axis of rotation at an approximately constant radius is at least one raceway for at least one row of rollers, each having a rotationally symmetrical shape and rolling displacingly between the rings, each of which rollers, when the rings and the rollers are at the same temperature, has at least one point or region of contact with the raceway portions on each of the two rings, so that the radial and/or axial clearance between the two rings is equal to zero or at least is negligibly small; and comprising a mechanism for compensating for temperature-induced radial changes in th
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: September 4, 2012
    Assignee: IMO Momentenlager GmbH
    Inventor: Georg Hofmann
  • Patent number: 8210753
    Abstract: A gap between a bearing box and a roll portion and so on which are not used for absorbing an expansion of a roll are reduced, and by increasing axial widths of the bearing box and cylindrical roller bearing for that, a loading capacity of the cylindrical roller bearing is enhanced. A first side face 13A of the bearing box 13 located at one side in the axial direction is disposed outwardly with respect to a central line Y2 between two roll portions 22A, 22B than a second side face 13B located at an other side in the axial direction, and a gap a1 between this first side face 13A and the roll portion 22A opposed thereto is made smaller than a gap a2 between the second side face 13B and the roll portion 22B opposed thereto.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: July 3, 2012
    Assignee: JTEKT Corporation
    Inventor: Takeharu Uranishi
  • Publication number: 20120106884
    Abstract: A rolling bearing arrangement, which has at least one angular contact rolling bearing arranged within a housing and at least one lash compensation element that is supported axially in one direction on the housing and is capable of being biased against a bearing ring of the angular contact rolling bearing with the bearing ring being axially movable relative to the housing, and a U-shaped ring which has two radially opposing legs directed in an axial direction. The U-shaped ring rendering the lash compensation element radially immovable by positive engagement while being guided on the bearing ring of the angular contact rolling bearing for axial displacement relative to the bearing ring, and the axial section of the bearing ring projecting axially between the legs of the ring profile.
    Type: Application
    Filed: September 23, 2011
    Publication date: May 3, 2012
    Inventors: Florian DOERRFUSS, Thorsten BIERMANN, Fritz WIESINGER
  • Publication number: 20120106885
    Abstract: A rolling bearing which has at least one lash compensation element possessing temperature-dependent extendably arranged on one bearing ring of the rolling bearing. The lash compensation element is surrounded at least partially by an angular ring profile. The angular ring profile has at least one leg directed axially parallel to an axis of rotation of the angular contact roller bearing. The ring profile is retained by the leg by positive axial engagement for limited axial movement on the bearing ring such that the lash compensation element is supported by the ring profile by positive engagement so as to be radially immovable on the bearing ring while being guided for axial movement on the bearing ring.
    Type: Application
    Filed: September 23, 2011
    Publication date: May 3, 2012
    Inventors: Marion Jack INCE, Guihui ZHONG
  • Patent number: 8123018
    Abstract: A power transmitting device includes a front housing member, an inner shaft, and a main clutch that selectively permits and shuts off transmission of torque between the front housing member and the inner shaft. The power transmitting device is rotatably supported by a bearing arranged outside the front housing member. An intermediate member having a thermal expansion coefficient lower than the thermal expansion coefficient of the front housing member is arranged between the front housing member and the bearing.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 28, 2012
    Assignee: JTEKT Corporation
    Inventor: Akio Matsumoto
  • Publication number: 20100040320
    Abstract: A bearing arrangement is provided that reduces effects of differences in rates of thermal expansion between transmission housings and shaft assemblies that are made from different materials. The bearing arrangement locates the bearings with respect to other components of a shaft assembly in a manner that establishes a bearing setting stack path along components that are made from materials having common coefficients of thermal expansion, despite the shaft assembly and bearing arrangements being mounted within a housing that is made from a material which has a dissimilar coefficient of thermal expansion.
    Type: Application
    Filed: October 26, 2009
    Publication date: February 18, 2010
    Applicant: Twin Disc, Inc.
    Inventor: Andrew Clark
  • Patent number: 7651276
    Abstract: In a bearing unit for a drive shaft mounted cantilevered in a housing by means of two rolling bearings and having a driving bevel gear wherein the drive shaft is mounted in the drive housing via a bearing bush and the bearing bush is axially supported at one end by a bearing bush support part and the rolling bearings are supported in the bearing bush spaced from the one end thereof so that, during heating, the bearing bush expands inwardly toward the driving bevel gear mounted on the shaft whereas the drive housing expands outwardly away from the driving bevel gear, the gear drive housing and the bearing bush consist of a light metal alloy and the bearing bush support part consists of an iron material.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: January 26, 2010
    Assignee: Daimler AG
    Inventors: Hartmut Nied, Wolfgang Oetken, Ulrich Scholz
  • Publication number: 20090202188
    Abstract: A bearing system (A) that supports a shaft (4) in a housing (2) includes two single row tapered roller bearings (6, 8) mounted in opposition. One of the bearings (8) compensates for thermal variations that would otherwise produce excessive preload in the system. It has a conventional cup (48) in the housing and tapered rollers (52) arranged in a single row along the raceway (54) of the cup. It also has a compensating assembly (50, 100, 110, 120, 130) on the shaft, and it includes a ribless cone (60) having a raceway (70) around which the rollers are organized, an axially displaceable rib ring (64) for positioning the rollers, a spring (66) for urging the rib ring against a stop surface (74) on the cone, and a compensating ring (68) formed from a material having a high coefficient of thermal expansion for displacing the rib ring against the force exerted by the spring when the temperature of the compensating assembly exceeds a prescribed set point temperature so as to reduce preload in the bearing system.
    Type: Application
    Filed: June 28, 2007
    Publication date: August 13, 2009
    Inventors: Gerald P. Fox, Bruce C. Burner
  • Publication number: 20090080824
    Abstract: A roller bearing for use in transmission cases (1) made from aluminum alloy or other lightweight materials where the transmission contains a steel shaft (2) which is supported in the case on two directly mounted tapered roller bearings (8,9) so that the two bearings (8,9) confine the shaft (2) both radially and axially. To compensate for the differences in expansion and contraction between the case and the steel shaft (2) as the transmission or transaxle experiences variations in temperature, a race (20) of at least one of the bearings is fitted with a compensating ring (34) having a coefficient of thermal expansion greater than that of the case (1) or shaft (2). As a consequence, the bearings operate at a generally uniform setting over a wide range of temperature variations.
    Type: Application
    Filed: July 26, 2005
    Publication date: March 26, 2009
    Applicant: THE TIMKEN COMPANY
    Inventors: Mark A. Joki, Mircea Gradu, Russell F. Folger, David D. Crichton, IV
  • Patent number: 7318759
    Abstract: A preload system for bearings in a waterjet propulsion apparatus, the apparatus including a water intake section and a pumping unit including a bearing cartridge. The bearing cartridge is designed such that during operation a preload system provides tailoring between radial and axial thermal growths of a plurality of bearing components that comprise the bearing cartridge and such that an initial ambient temperature preload condition can be maintained or reduced during normal water mode operation conditions. The preload system includes a plurality of spacers that when positioned relative to the bearing components of the bearing cartridge prevent relative motion between the bearing components during land mode operation and maintain or reduce the initial ambient room temperature preload condition during normal water mode operation.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: January 15, 2008
    Assignee: Honeywell International, Inc.
    Inventors: Brent L. Bristol, William B. Harper, Arun Kumar, Albert G. Selder, Jeffrey J. Aitchison, Richard H. Dennis
  • Patent number: 7282006
    Abstract: A power transmission device includes a housing, a differential assembly having a case and a bearing assembly rotatably supporting the case within the housing. A preload is applied to the bearing assembly along a load path. A shim is positioned in the load path with the bearing assembly. The shim is constructed at least in part from a material having a predetermined coefficient of thermal expansion such that the shim is operable to compensate for different rates of thermal expansion in the components within the load path to maintain a desired bearing preload or a range of operating temperatures.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: October 16, 2007
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Paul H. Petruska, Benjamin J. Walker
  • Patent number: 7175350
    Abstract: A shaft rotates in a housing on two single row tapered roller bearings mounted in opposition such that the raceways of the one bearing taper downwardly toward the raceways of the other bearing. The metal from which the housing is formed has a higher coefficient of thermal expansion than the metal from which the shaft and bearings are formed. The bearings are set to preload to stabilize the axis of rotation. To prevent the cups (outer races) of the bearings from becoming loose as a consequence of differential thermal expansion between the housing and shaft, the cups are provided with beveled back faces which abut beveled shoulders at the ends of bearing seats in the housing. As the housing expands radially and perhaps eliminates radial interference fits between the cups and housing, the housing also expands axially and maintains the beveled shoulders of the bearing seats firmly abutted against the beveled back faces of the cups, so that the cups do not displace either axially or radially.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: February 13, 2007
    Assignee: The Timken Company
    Inventors: Mircea Gradu, John Feltman, Sharon E. Ross, Tim Schlernitzauer
  • Patent number: 7175560
    Abstract: A power transmission device includes a housing, a differential assembly having a case and a bearing assembly rotatably supporting the case within the housing. A preload is applied to the bearing assembly along a load path. A shim is positioned in the load path with the bearing assembly. The shim is constructed at least in part from a material having a predetermined coefficient of thermal expansion such that the shim is operable to compensate for different rates of thermal expansion in the components within the load path to maintain a desired bearing preload or a range of operating temperatures.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: February 13, 2007
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Paul H. Petruska, Benjamin J. Walker
  • Patent number: 7155826
    Abstract: A motor spindle includes a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and a loose bearing. The received tool enters into contact with the machined workpiece in a tool interface when the spindle shaft is driven and the tool interface is displaced in an axial direction of the spindle shaft when a workpiece is machined. A displacement sensor is provided on the spindle bearing in order to determine the axial displacement of the tool interface. There is also a motor spindle including a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and in a loose bearing with an axially displaceable bearing bushing. The tool enters into contact with the machined workpiece at the tool interface when the spindle shaft is driven, and an adjusting element which is used to adjust the axial displacement of the bearing bushing of the motor spindle is also provided.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: January 2, 2007
    Assignee: Paul Müller GmbH & Co. KG Unternehmensbeteiligungen
    Inventor: Heinz Wehrfritz
  • Patent number: 6817774
    Abstract: Method and apparatus for automatically dynamically adjusting prestressed bearings of shaft are provided. The apparatus comprises a sleeve assembly having outer and inner sleeves sandwiched between the bearings. An inner diameter of outer sleeve is smaller than an outer diameter of inner sleeve. Hence, outer and inner sleeves are fitted together after cooling. Further, inner sleeve is compressed by the outer sleeve to extend axially. During rotation of shaft, the axial extension of inner sleeve is reduced because the radial expansion of outer sleeve is larger than that of inner sleeve due to an thermal expansion coefficient of outer sleeve larger than that of inner sleeve. This can reduce prestress of bearings without degrading a rigidity thereof.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: November 16, 2004
    Assignee: Industrial Technology Research Institute
    Inventors: Jinn-Fa Wu, Tsann-Huei Chang, Kuan-Wen Chen
  • Patent number: 6416228
    Abstract: A rolling-contact bearing for a shaft journal wherein the outside diameter of the shaft journal is thermally insulated relative to the shaft through which a heat transfer medium flows. The bore of the inner race on the shaft journal is provided with a ceramic layer predominantly of zirconium oxide and a smaller among of yttrium oxide to reduce the heat transfer from the shaft journal to the rolling-contact bearing. The inner race also has lateral surfaces toward the elements securing the bearing on the shaft journal. Those lateral surfaces may be provided with a ceramic layer as well.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: July 9, 2002
    Assignee: FAG OEM und Handel AG
    Inventors: Karl Müller, Gudrun Martin
  • Publication number: 20010046340
    Abstract: A roller bearing device having two roller bearings positioned in an axially spaced relation, in which even when in high speed rotation, a fixed pilot pressure of bearings is maintained by differentiating the thermal expansibility of a distance piece between tracks of the roller bearings and the thermal expansibility of a collar interposed between the track race and a mating member.
    Type: Application
    Filed: October 5, 1998
    Publication date: November 29, 2001
    Inventor: TOSHIAKI SHIMOMURA
  • Patent number: 6293704
    Abstract: A shaft rotates within a housing on a double row tapered roller bearing and remains extremely stable at all temperatures, even though the housing is formed from a light weight metal having a significantly greater coefficient of thermal expansion than the metal of the bearing. To this end, the housing contains a bore defined by a cylindrical surface and a conical surface which flares away from the cylindrical surface and opens out of one face of the housing. The bearing has two cones which surround the shaft, a unitary or double cup which fits into the bore of the housing, and tapered rollers arranged in two rows between the cones and cup. The double cup on its exterior has a cylindrical surface which fits into the cylindrical surface of the housing bore and a flange provided with a beveled face which is against the conical surface of the housing bore.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 25, 2001
    Assignee: The Timken Company
    Inventor: Mircea Gradu
  • Patent number: 6273614
    Abstract: A rolling-contact bearing having a termal compensation insert. The bearing includes a first ring with a first ball race, a second ring with the second ball race, and a row of rolling bodies which obliquely contact the ball races. A compensating insert is in stop contact on one of the rings. One of the sheet metal rings has a supporting surface which is extended by a radial stop extension for blocking the insert axially and radially.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: August 14, 2001
    Assignee: SNR Roulements
    Inventor: Christophe Nicot
  • Patent number: 6250815
    Abstract: A vehicle transmission is provided having a housing that includes a support with an opening. The transmission also has a shaft with an axis of rotation and an end portion disposed within the support opening. A floating bearing assembly is arranged between the housing and the end portion so that the bearing assembly supports the end portion within the support opening thereby permitting the shaft to rotate about it axis within the support opening. The bearing assembly is movable along the axis of rotation relative to the housing to permit the shaft to move along the axis of rotation. An expansion member is arranged between the end portion and the housing to expand and contract with changing temperatures and maintain a desired end play tolerance between the end portion and the housing.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: June 26, 2001
    Assignee: ZF Meritor, LLC
    Inventors: Kenneth T. Picone, Teisuolis C. Mikulskis, Peggy M. Garrett
  • Patent number: 6210043
    Abstract: A support assembly comprising an elongated shaft, a bearing assembly at opposite terminal ends of said shaft paralleled in a pillow block, support means for each of said pillow blocks and means mounting one of said bearing assemblies for adjustable axial movement relative to said pillow block thereby to compensate for any changes in the support structure in an axial direction and a method for supporting a load bearing member on spaced support structures comprising the steps of mounting the lower half of a pillow block on each of the spaced support structures, positioning a shaft having bearings journaled at opposite ends so that the bearings engage in the lower half of the pillow block, assembling the cap section of each pillow block, fixing the bearing in one of the pillow blocks against displacement in an axial directions relative to the pillow block, and displacing the bearing in the other pillow block axially to position it generally centrally in the pillow block with a predetermined clearance between the
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: April 3, 2001
    Assignee: SKF USA, Inc.
    Inventor: William H. Detweiler
  • Patent number: 5857782
    Abstract: A two-piece annular bearing ring seat with an annular concave spherical inside surface is adapted to slidably receive a spherical outer surface of a bearing ring. An annular strap having a coefficient of thermal expansion higher than the coefficient of thermal expansion of a bearing housing holds the bearing ring seat and annular strap together as a subassembly. The subassembly can be press fit into the housing to provide a housed self-aligning bearing.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: January 12, 1999
    Assignee: The Torrington Company
    Inventor: Walter P. Waskiewicz
  • Patent number: 5843282
    Abstract: The invention is directed to an apparatus to produce layers of material, such as paper, carton or cardboard, under use of at least one roll that can be heated in a controlled manner, in particular a dryer cylinder, with tubing attached to the end of the roll that supplies the energy necessary to heat up the roll. Bearings at both ends of the roll are mounted to a seating structure. One of the bearings is a freely carrying bearing and the steam supply is rigidly attached to the seating structure.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: December 1, 1998
    Assignee: Voith Sulzer Papiermaschinen GmbH
    Inventors: Anton Schmitt, Thomas Mack
  • Patent number: 5833371
    Abstract: Device for transmitting a temperature signal by mechanical means, which consists in the use of a thermostatic element (1) made from expandable material which, when the inner bearing heats up, pushes against a rod (2) secured to a disc-carrying piece (3) and, simultaneously, to a disc (4), which, if the temperature is sufficiently high, is displaced until it comes into contact with the outer cover (5) of the bearing mounted on the other side of the wheel, that is to say on the outside, and the higher the temperature reached by the inner bearing, the greater will be the pressure exerted by the disc (4) on the cover (5) and the more rapidly the threshold detection temperature will rise, which temperature will be picked up by the pick-up device located on the track. (FIG.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: November 10, 1998
    Assignee: Investigacion Y Asesoramiento Tecnico, S.A. Invastesa
    Inventors: Jose Luis Lopez Gomez, Luis Archilla Aldeanueva
  • Patent number: 5667046
    Abstract: A one piece, molded plastic roller clutch cage has the heavy, rigid cross bars of adjacent pockets joined together by circumferentially flexible connecting members. The connecting members are located entirely within the space between pockets, and have no effect of the shape or structure of either the side rails or the cross bars of the pockets. When the cage expands or contracts with rising or falling temperatures, the curved connecting members can open or close, allowing the adjacent cross bars of adjacent pockets to move together or apart, thereby avoiding excess compression or tension in the cage.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: September 16, 1997
    Assignee: General Motors Corporation
    Inventors: Ellen Christine Stanton, Albert David Johnston
  • Patent number: 5598747
    Abstract: An improved structure supports a bearing in a bore provided in a portion of a transmission case and prevents relative rotation therebetween. In a preferred embodiment, the clutch housing portion of a transmission case is made from aluminum and includes an interior wall having a bore formed therein. A circumferential groove is formed in the side wall of the bore, and a compressible or elastomeric O-ring is disposed in the groove. A bearing is made from steel and includes an inner race, an outer race, and a plurality of rollers disposed between the races. As the bearing is pressed into the bore, the O-ring is compressed completely within the groove. So long as both the aluminum clutch housing and the steel outer race of the bearing remain in a relatively cold condition, the outer race will frictionally engage the inner surface of the bore, thus preventing any relative rotational movement therebetween.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: February 4, 1997
    Assignee: Dana Corporation
    Inventors: George F. Schetter, Steven N. Tucker, Jr.
  • Patent number: 5585682
    Abstract: A thermally compensated assembly for a generator for controlling the stress on a stator within a housing subject to temperature changes. The thermally compensated assembly includes a stator, a housing enclosing the stator, first and second thermal compensation members provided on each end of the stator and means for securing the first and second thermal compensation members with respect to the housing. The thermal compensation members are provided with angled portions disposed with respect to each other. The angle of the angled portions may be chosen equal or slightly different than a predetermined angle to provide a constant or variable axial load on said stator when said thermally compensated assembly is subject to changes in temperature.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 17, 1996
    Assignee: Sundstrand Corporation
    Inventors: Timothy S. Konicek, Tyrone A. Johnsen
  • Patent number: 5395172
    Abstract: Bearing assembly (11) for mounting a bearing journal (2) of a rotatable roll (1). The bearing journal (2) is supported by a spherical bearing element (2a) in a bearing housing (5). The bearing journal (2) is fixed in the direction of the longitudinal axis (L) of the bearing assembly (11) in the bearing housing (5). The bearing housing (5) is connected with the aid of axial guide elements to a base (10), which is fastened on a framework (15) or foundation (or on a swivel lever). The axial guide elements are guide rods (12a, 12b) which are parallel to the longitudinal axis (L) and which engage in the bearing housing (5) and in the base (10). The one guide rod (12b) is displaceable transversely to its axis, so that the bearing housing (5) can expand transversely to the longitudinal axis (L) relative to the base (10).
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: March 7, 1995
    Assignee: J.M. Voith GmbH
    Inventor: Joachim Grabscheid