Centrifugal Feature Patents (Class 384/465)
  • Patent number: 10697586
    Abstract: An example lubrication system for a rotating component has a primary lubrication system providing continuous lubrication during normal operation of the rotating component and secondary lubrication system with a reservoir co-rotating with the component. The reservoir is continuously replenished from the primary lubrication system during normal operation of the rotating system, with the lubricant being forced through a discharge orifice by the centrifugal force generated by the rotation toward, for example, a bearing or a gear. When the primary pressurized lubrication system fails, lubrication will continue to be provided by the lubricant in the supplemental lubricant reservoir while the rotation speed or power supplied to the shaft is controllably decreased in an emergency.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: June 30, 2020
    Inventor: Scott David Poster
  • Patent number: 10641334
    Abstract: Tapered roller bearings are disclosed. The bearing may include an inner ring defining an inner raceway and an outer ring defining an outer raceway. A plurality of tapered rollers may be disposed between the inner and outer rings and a cage may be configured to retain the plurality of tapered rollers. The inner ring may include a rib at a first axial end configured to retain a larger diameter end of the tapered rollers but not have a rib at a second axial end that is proximate a smaller diameter end of the tapered rollers. A gap may be defined between the cage and the inner ring at the second axial end, the gap configured to control a lubricant flow to the plurality of tapered rollers.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: May 5, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Shaun Tate, Alaa Makke
  • Patent number: 10520030
    Abstract: Provided is a structure with a bearing which is capable of suppressing abrasion of a first member and a first annular member of the bearing in contact with the first member even when relative movement occurs between the first member and the first annular member. The structure with a bearing supplies lubricating oil scraped up from an oil reservoir by an output member (12) to a bearing (20) disposed between a ring gear (Rb) and a transmission case (10). The ring gear (Rb) has a communication groove (30) which allows two spaces adjacent to the bearing (20) to communicate with each other in a portion which is in contact with the first annular member (21) located on an inner circumferential side of the bearing (20).
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: December 31, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventor: Isamu Muramatsu
  • Patent number: 10344748
    Abstract: A bearing device includes: a bearing portion that has an inner ring, an outer ring, a plurality of balls interposed between the inner ring and the outer ring, and a cage that holds the balls; and an oil supply unit provided adjacent to the bearing portion in the axial direction. The oil supply unit has a pump that discharges a minute amount of lubricating oil to the bearing portion, and varies the amount of oil supplied to the bearing portion by discharge of lubricating oil from the pump.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: July 9, 2019
    Inventors: Yoshimichi Higashiyama, Tsukasa Sakazaki, Masami Naka
  • Patent number: 10030709
    Abstract: A bearing apparatus includes a bearing portion having an outer ring, an inner ring, a plurality of balls interposed between the outer ring and the inner ring, and a cage that holds the balls, and a lubrication unit provided adjacently to the bearing portion in an axial direction thereof to feed lubricant to a lubrication area that needs to be lubricated. The lubrication unit has a tank that stores the lubricant, and a pump that ejects the lubricant toward the lubrication area. The pump has an ejection port that is open toward the lubrication area and through which the lubricant is ejected at a predetermined initial velocity in the form of a 0.5 to 1,000 picoliter oil droplet.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 24, 2018
    Inventors: Boyko Stoimenov, Kiyoshi Tanimoto
  • Patent number: 10006492
    Abstract: A vacuum pump comprises: a bearing device; and an exhaust function including a rotary body supported by the bearing device and configured to exhaust gas. The bearing device includes a bearing having an outer ring, an inner ring, and a rolling body, a lubricant storage configured to store lubricant, a lubricant supply structure configured to supply, to the bearing, the lubricant stored in the lubricant storage, a holding member configured to hold the bearing, and a porous body disposed outside the outer ring of the bearing and filled with the lubricant supplied from the lubricant supply structure to the bearing.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: June 26, 2018
    Assignee: Shimadzu Corporation
    Inventor: Masashi Manabe
  • Patent number: 9958005
    Abstract: An oil-lubricated bearing device comprises: a rolling bearing including an inner ring, an outer ring, rolling bodies, and a holder; a tapered member; a lubricant storage disposed on a side provided with the tapered member with respect to the inner ring; and a contact portion. The holder includes pockets each formed with outer and inner ring side openings and configured to hold a corresponding one of the rolling bodies, a lubricant scraping portion formed at an inner peripheral surface of each of the pockets and configured to scrape lubricant adhering to a surface of each of the rolling body, and a second inclined surface formed at an outer peripheral surface portion of the holder adjacent to the outer ring side opening and rising with a slope toward the lubricant storage.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: May 1, 2018
    Inventors: Masashi Manabe, Hidefumi Saito
  • Patent number: 9683605
    Abstract: An inner ring has a rib face as a concave surface that is formed on the larger diameter side of an inner ring and that contacts large end faces of tapered rollers. A tapered roller bearing satisfies Ri>R?Rr, where Rr represents a curvature radius of the large end face, Ri represents a curvature radius of the rib face 8 in a longitudinal section of the inner ring 2, R represents a distance from a cone center to a reference point. The distance R is the distance from the cone center to the reference point, where the reference point is the intersection of the rib face and an imaginary line extending from the cone center and along an inner ring raceway surface in the longitudinal section of the inner ring 2. Surface roughness of the rib face is greater than that of the large end face.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 20, 2017
    Inventors: Junji Murata, Shigeo Kamamoto, Yuki Shishihara
  • Patent number: 9599160
    Abstract: A tapered roller bearing includes: an inner ring; an outer ring; a plurality of tapered rollers having a roller large end face that is a convex curved surface; and an annular cage that holds the tapered rollers at intervals along a circumferential direction. The inner ring includes a large rib portion having a rib surface that is a concave curved surface and that contacts the roller large end face. Inequalities represented by R>Ri>Rr are satisfied, where Rr is a curvature radius of the roller large end face, Ri is a curvature radius of the rib surface in a longitudinal cross section of the inner ring, and R is a distance from a cone center to a center of a contact ellipse obtained by contact between the roller large end face and the rib surface.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: March 21, 2017
    Inventors: Junji Murata, Shigeo Kamamoto
  • Patent number: 9033582
    Abstract: A rolling bearing device which may include: a pair of raceway rings including an inner ring and an outer ring, a plurality of rolling elements interposed between respective raceway surfaces of the inner and outer rings, a retainer to retain the rolling elements; an oil supply and discharge mechanism to supply a lubricant oil, which concurrently serves as a bearing cooling medium, into the inside of the bearing device and to discharge the lubricant oil to the outside of the bearing device; and a ring shaped shake-off collar portion disposed in the vicinity of an end portion of an outer diametric surface of the inner ring so as to protrude radially outwardly, wherein the lubricant oil supplied from the oil supply and discharge mechanism and provided for lubrication within the bearing device is, after being received by the shake-off collar portion, shaken-off in a direction radially outwardly by the effect of a centrifugal force developed as a result of an inner ring rotation.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 19, 2015
    Inventors: Yuushi Onda, Mamoru Mizutani
  • Patent number: 8979383
    Abstract: Dynamically-lubricated bearings and methods of dynamically lubricating bearings, including bearings used in gas turbine engines. Such a bearing includes an inner race having an inner race groove, an outer race having an outer race groove that opposes the inner race groove, rolling elements disposed between the inner and outer races and in rolling contact with the inner and outer race grooves, and a cage disposed between the inner and outer races to maintain separation between the rolling elements. A lubricant is introduced into a cavity between the inner and outer races, and rotation of the inner race relative to the outer race causes air to enter pockets of the cage that contain the rolling elements, which in turn causes the lubricant to exit the cavity of the bearing.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: March 17, 2015
    Assignee: General Electric Company
    Inventors: Bruce Alan Carter, Pradeep Hemant Sangli, Santosh Kumar Potnuru, Laxmikant Chourasia
  • Publication number: 20140219596
    Abstract: Radial passages (22) that penetrate from the inner diameter side to the outer diameter side of a retainer (8) are provided between inner wall surface portions (14) of a pocket (10) facing each other in an axial direction of the retainer and a rolling element (6) so that the radial passages (22) serve as a grease reservoir as well as a grease passage for allowing the grease adhering to the rolling element (6) to move onto an outer ring raceway surface (4a). The radial passages (22) are made up of arc-shaped spaces (18) between the rolling element (6) and the inner wall surface portions (14) of the inner wall surface of a pocket (10) and segment shaped spaces (20) between the rolling element (6) and arcuate recesses (16) at the four corners of the pocket (10).
    Type: Application
    Filed: June 18, 2012
    Publication date: August 7, 2014
    Inventors: Yasuhito Fujikake, Tomoya Nakamura, Hiroaki Suzuki
  • Patent number: 8529134
    Abstract: An inner ring contact member is mounted on a rotation shaft to be disposed at a lower side of an inner ring in a vertical direction such that a larger-diameter end of a conical outer peripheral surface abuts against an axial end surface of the inner ring. The conical outer peripheral surface is formed such that the larger-diameter end of the conical outer peripheral surface is disposed radially inwardly of a radially outward edge of the end surface of the inner ring. A cage is disposed between the inner ring and an outer ring in such a manner that a first annular portion of the cage close to the conical outer peripheral surface is disposed so as to overlap with the end surface of the inner ring in the radial direction.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: September 10, 2013
    Assignee: JTEKT Corporation
    Inventors: Hiroshi Sekimoto, Masaaki Ohtsuki
  • Patent number: 8465207
    Abstract: An auxiliary bearing including a bearing mount disposed circumferentially about a shaft. A support wall may extend radially inward from the bearing mount, and the support wall may define a first annular cavity. An outer race may be coupled to a radially inner surface of the support wall. An inner race may be rotatably coupled to the outer race, and a plurality of rolling elements may be disposed between the inner and outer races. A pool of lubricant may be disposed within the first annular cavity, and at least a lowermost one of the plurality of rolling elements may be at least partially disposed in the pool.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 18, 2013
    Assignee: Dresser-Rand Company
    Inventors: William C. Maier, Joseph A. Tecza
  • Patent number: 8439569
    Abstract: A highly reliable combined bearing capable of achieving equal and sufficient lubrication of a plurality of roller bearings with a simple and compact structure is provided. The combined bearing includes a first roller bearing and a second roller bearing which are in contact with each other and arranged on the same axis. A lubricating oil inlet introduces a lubricating oil into an inner space formed between the first roller bearing and the second roller bearing, the lubricating-oil inlet being provided on at least one of an outer ring of the first rolling bearing and an outer ring of the second rolling bearing.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 14, 2013
    Assignee: Ebara Corporation
    Inventors: Kazuma Ito, Kazuyuki Tatsuta, Tetsuro Sugiura
  • Patent number: 8240434
    Abstract: flow control arrangement for controlling the flow of lubricant discharged from a bearing includes a flow control member locatable, in use, adjacent to the bearing. The flow control member defines a generally radially outer edge and is rotatable to direct lubricant discharged onto the flow control member radially outwardly towards the outer edge for ejection therefrom.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: August 14, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Carol Norma Eastwick, Kathryn Anne Simmons, Graham Johnson, Stephen John Pickering, Mark Farrall
  • Patent number: 8202005
    Abstract: A bearing module for supporting a rapidly rotatable shaft of a vacuum pump includes a rolling bearing for supporting rotatably the shaft, a reservoir for a lubricant having an element forming a sliding contact with a delivery structure supported on the shaft for delivery of the lubricant in the rolling bearing under action of centrifugal forces generated during rotation of the shaft, and a radial delivery element provided on a side of the rolling bearing opposite a side of the bearing at which the delivery structure is located, for returning the lubricant to the reservoir.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: June 19, 2012
    Assignee: Pfeiffer Vacuum GmbH
    Inventors: Bernhard Koch, Joerg Stanzel
  • Patent number: 8057184
    Abstract: The invention relates to a propeller blade bearing, for the propeller blades of aircraft propellers that can be adjusted along their longitudinal axis, a plurality of propeller blades being individually fastened on a propeller hub in a corresponding number of blade seats. Every propeller blade, at its blade base, has a primary adjustable bearing and a secondary adjustable bearing and is received so as to be rotatable along its longitudinal axis inside a blade seat. The primary and the secondary adjustable bearing are configured as angular contact ball bearings that have respective upper bearing races and lower bearing races and rolling bodies interposed between said bearing races. A lubricating oil reservoir is arranged in the propeller hub and supplies the primary and the secondary adjustable bearing with lubricating oil when the propeller rotates. Every propeller blade is configured as a completely pre-assembled unit with the primary adjusting bearing and the secondary adjusting bearing.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: November 15, 2011
    Assignee: Schaeffler KG
    Inventor: Wilhelm Sebald
  • Patent number: 7735389
    Abstract: An input system includes an input shaft portion, including a first and second input shafts, bearings, rotatably supporting the input shaft portion; and clutches, for transmitting rotational power to the first or second input shafts. An output system includes a first and second output shafts, and a plurality of driven gearwheels, which mesh with drive gearwheels of the first and second input shafts. Driven gearwheels for low gears disposed on the second output shaft are submerged in lubricating oil in an oil reservoir provided below the second output shaft. Drive gearwheels for low gears are disposed adjacent to the bearings. Tooth width dimensions of the drive gearwheels for the low gears are larger than tooth width dimensions of the driven gearwheels for the low gears. Exposed tooth width portions of the drive gearwheels constitute oil splashing portions which splash lubricating oil splashed by the driven gearwheels on to the bearings.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: June 15, 2010
    Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Jidosha Engineering Kabushiki Kaisha
    Inventor: Katsuhiro Komori
  • Patent number: 7178987
    Abstract: A bearing assembly comprising a centrifugal debris trap for removing contamination debris from lubrication fluid prior to lubrication of the bearing assembly components is provided. The centrifugal debris trap comprises an annular groove on an inner race such that with sufficient centrifugal force, contamination debris in the lubrication oil is forced into the groove and held there. Removal of contamination debris from the lubrication oil prevents damage to bearing balls and races of the bearing assembly, thus reducing bearing fatigue. A method for lubricating bearing assembly components using the bearing assembly of the present invention is also provided.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: February 20, 2007
    Assignee: Honeywell International, Inc.
    Inventors: Eric B. Bridges, Raymond J. Knorr, Scott J. Marshall, Edward (Edd) M. Brady
  • Patent number: 7086784
    Abstract: A bearing unit comprises a radially outer stationary race (1) and a pair of radially inner rotatable half-races (2a, 2b). Au intermediate annular chamber (8) is defined between the outer race (1) and the inner half-races (2a, 2b) The intermediate chamber communicates with the outside through first air passages (5) formed in the outer race (1) and with the inside of the bearing unit through second radial air passages (6) defined between the inner half-races (2a, 2b). An intermediate annular member (10) is axially interposed between the inner half-races (2a, 2b) and defines the second passages (6).
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: August 8, 2006
    Assignee: SKF Industrie S.p.A.
    Inventors: Andreas Ruetter, Luca Zavaglia, Michele Musso, Marco Brunetti
  • Patent number: 6913438
    Abstract: A circulating lubrication system for a centrifugal pump, or other rotating equipment utilizing an oil sump, is disclosed. The lubrication system includes an external reservoir located distant from the main lubrication chamber, so that lubricating fluid from the main misting chamber is forced out of the main chamber, cooled and cleaned (i.e. filtered) in the external reservoir, and thereafter fed back into the main lubricating chamber. In such a manner, the lubrication system maintains substantially clean, cool, and moisture free lubricating fluid in the main misting chamber and reduces the required downtime of the device. Thus, the life span of the device is lengthened while at the same time production is increased.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: July 5, 2005
    Assignee: Environamics
    Inventor: Robert E. Rockwood
  • Patent number: 6854892
    Abstract: The present invention relates to a spacer arrangement used in a duplex bearing system. The spacer arrangement has a lubricant chamber, a first spacer element within the lubricant chamber having a centrifugal ramp, and a second spacer element within the lubricant chamber having a baffle. The baffle divides the lubricant chamber into first and second chambers with each chamber communicating with one of the bearings in the duplex bearing system. The centrifugal ramp counteracts the effects of gravity and uses centrifugal forces to insure a supply of lubricant to one of the bearings, typically an upper bearing, in the duplex bearing system. The spacer arrangement has particular utility in a swashplate assembly used in helicopters, which swashplate assembly includes a stationary swashplate and a rotating swashplate with the duplex bearing arrangement being located between the two swashplates.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: February 15, 2005
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Kenneth L. Lauck, Andrew David Redman
  • Patent number: 6840678
    Abstract: Deflection adjustment roll and process of operating deflection adjustment roll. Deflection adjustment roll includes a yoke, antifriction bearings, which are lubricated with a liquid, a roll jacket which is pivotably coupled to the yoke via the antifriction bearings, and a sealing arrangement coupled to a coolant supply. A first disposal path is structured and arranged to guide a lubricant stream from the antifriction bearing, and a second disposal path, which is separate from the first disposal path, is structured and arranged for guiding a coolant stream from the sealing arrangement.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: January 11, 2005
    Assignee: Voith Paper Patent GmbH
    Inventors: Reinhard Wenzel, Peter Dornfeld
  • Patent number: 6733181
    Abstract: A bearing unit is provided, wherein the outer peripheral surface of the inner race extends outward in the axial direction beyond the end surface of the outer race, and is formed such that the diameter of the outer peripheral surface of the inner race increases in the direction toward the rolling elements, such that when lubrication oil is ejected together with air on the outer peripheral surface of the inner race, the lubrication oil moves over the outer peripheral surface due to centrifugal force and is supplied to the rolling elements, making it possible to secure the amount of lubrication oil supplied per unit time to the inside of the bearing, and thus making it possible to reduce wind noise.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: May 11, 2004
    Assignee: NSK Ltd.
    Inventors: Yu Koiwa, Naoki Matsuyama, Tamotsu Misawa
  • Patent number: 6578670
    Abstract: The invention refers to a drive unit (1) for a centrifuge rotor (2) of a centrifugal separator. The drive unit (1) includes a drive shaft (3), which is arranged to support said centrifuge rotor (2) and is rotatably journalled around an axis (z) of rotation, a casing (6), which forms an inner space for the drive shaft (3), and a drive motor shaft (9), which is provided outside the casing (6) and connected to the drive shaft (3) by means of a transferring member (11) which extends through a passage (12) in the casing (6). A shielding member (23) is provided inside the casing (6) in such a way that the part of the transferring member (11), which is located inside the casing (6) is shielded from the inner space, wherein the shielding member (23) forms a channel, which extends through the casing (6) and is shielded from the inner space of the casing.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: June 17, 2003
    Assignee: Alfa Laval AB
    Inventors: Kjell Klintenstedt, Torbjörn Larsen, Jan Setterberg, Stefan Szepessy
  • Patent number: 6443623
    Abstract: A lubrication system for a rolling bearing comprised of, an inner ring fitted on a shaft rotating at high speed inside a housing, on the outer peripheral surface of which an inner ring raceway is formed; an outer ring fitted into the housing, on the inner peripheral surface of which an outer ring raceway is formed; an outer ring spacer fitted into and supported by the housing adjacent to the outer ring and having a lubrication oil path; and a plurality of rolling elements provided between the inner ring race ay and the outes ring raceway; wherein the lubrication oil is supplied through the lubrication oil path in the outer ring spacer into a space where a plurality of the rolling elements are provided between an outer peripheral surface of the inner ring and an inner peripheral surface of the outer ring, wherein any portion where the sloping direction and/or sloping angle suddenly changes does not exist from the smaller diameter end, to the larger diameter end adjacent to the inner ring raceway.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: September 3, 2002
    Assignee: NSK Ltd.
    Inventors: Sumio Sugita, Yu Koiwa, Tamotsu Misawa
  • Patent number: 6443624
    Abstract: An angular contact ball bearing has races formed from a case-carburized or carbonitrided steel, preferably a stainless steel, that withstands high forces and high temperatures. The bearing has relatively low osculation ratios to reduce the generation of heat, yet can withstand applied radial loads and the centrifugal forces generated in high speed operation.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: September 3, 2002
    Assignee: The Timken Company
    Inventors: Richard A. Knepper, Tadao Tsuneyoshi, William E. Harbottle, Neal C. McBain
  • Patent number: 5938347
    Abstract: In a bearing lubrication delivery mechanism, a primary member is supported for rotation about a first axis and defines a bore having a second axis approximately parallel to and radially offset from the first axis. A sleeve is positioned in the bore and at least two anti-friction bearings are slidably mounted on an exterior surface of the sleeve. The bearings support the sleeve in the bore for rotational motion relative to the primary member and in combination define a first and second side. The sleeve also defines a central lubricant reservoir for receiving a charge of lubricant. A fluid conduit leading to the first side of the anti-friction bearings is defined by the sleeve and an interior surface of the bore, and a radial flow path communicating with the central lubricant reservoir and the fluid conduit is defined by an inner end of the sleeve and an end wall of the bore.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: August 17, 1999
    Assignee: Gerber Technology, Inc.
    Inventors: Richard Kuchta, Peter Hasiuk
  • Patent number: 5735676
    Abstract: A method and device for the autolubrication of the rolling bearings of turbomachines. The method and device utilize pressure differences present in the turbomachine for sucking in the lubricating oil. Moreover, a pressure is built up in centrifuges arranged on a shaft, and is used for the direct injection of the lubricating oil into the rolling bearings. For this purpose, an annular element imparting a negative pressure is arranged stationarily on the shaft, and is designed as a negative pressure chamber. The negative pressure chamber is connected via an oil suction conduit to an oil sump holding the lubricating oil and via a first air conduit to a negative pressure region of the turbomachine. The oil sump is connected via a second air conduit to an overpressure region of the turbomachine. A separating point is arranged between the oil suction conduit and the negative pressure region, preferably in the first air conduit.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: April 7, 1998
    Assignee: Asea Brown Boveri AG
    Inventor: Markus Loos
  • Patent number: 5724934
    Abstract: A combustion engine comprising a lubricated bearing mountable on the shaft of the engine, and a race/seal bearing plug engagable therewith and engagable with a housing member of the engine. The race/seal bearing plug comprises lubricant passage therein dispensing lubricant medium to the bearing, with the bearing discharging lubricant to a lubricant slinger which serves to centrifugally direct the lubricant to a peripheral collection channel for recirculation to the lubricant flow passages in the bearing plug.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: March 10, 1998
    Inventors: John A. Faraci, Anthony J. Nino
  • Patent number: 5413209
    Abstract: A motorized conveyor roller is provided which includes a mechanism for rotatably mounting a roller tube in a conveyor frame, the roller tube having a length, an inner diameter and a hollow interior. The roller tube has disposed within the hollow interior, a motor and a gear reducer also mounted inside the roller tube operatively connected to the motor. The gear reducer includes an output and a drive member being driven by the gear reducer output to drive said roller. A lubricant is contained within the hollow interior for lubricating and cooling the motor, the gear reducer, the gear reducer output, and the inner diameter of the roller tube. The roller tube has a device for ensuring that the lubricant is uniformily distributed about the inner diameter and length of the roller tube proximate portions of the inner diameter which do not contain the motor, the gear reducer, or the gear reducer output.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: May 9, 1995
    Assignee: Werner Motor Company Ltd.
    Inventor: Hans Werner
  • Patent number: 5382099
    Abstract: A bearing unit consists of a radial bearing 1 and an axial bearing 2, the outer ring 3 of the radial bearing 1 being extended at one end in the axial direction to hold the axial bearing 2.So that the bearing unit is able to absorb large radial and axial forces and is reliably sealed off against contamination from the outside, the outer ring 3 of the radial bearing 1 consists of a solid piece of material, and the extension 3.sup.a of the outer ring 3 is provided, starting from the end surface 4, with a bore 4.sup.a to hold the axial bearing 2, this bore being sealed by a bearing housing cover 6, which rests against the end surface 2.sup.a of the axial bearing 2 and is connected to the outer ring 3.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: January 17, 1995
    Assignee: SKF GmbH
    Inventors: Bernhard Bauer, Rut Heemskerk, Knut Mirring, Armin Olschewski, Martin Schepp, Klaus Kispert, Jurgen Scholl, Rainer Stanzel, Robert Stolz
  • Patent number: 5207291
    Abstract: A barrier system for the lubricating oil for the bearings of a centrifugal compressor with labyrinth seals installed in a confined environment, consisting of a disc concentrically rigid with the rotating compressor shaft in the chamber facing the bearing situated on the compressor suction side, in a position between said bearing and the relative suction side labyrinth seal, the disc having an inverted U-shaped rim housing a stator ring rigid with the wall of said chamber and arranged concentric with said shaft, which with said rotating disc forms a small passage continuously fed, and kept filled by the centrifugal effect of said rotating disc, with barrier oil bled from the lubricating oil feed, said stator ring being provided, on that side facing the disc, with a wedge which is inserted into a corresponding cavity in the disc, and with an annular deflector tooth projecting beyond the outer edge of said disc cavity.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: May 4, 1993
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Vasco Mezzedimi, Giampietro F. Aggradi
  • Patent number: 5199798
    Abstract: A bearing assembly having coaxial inner and outer bearing races, a plurality of rolling elements which ride in respective raceways in the inner and outer races, and annular sealing discs interposed between the inner and outer races for defining annular lubricant containing chambers on opposed axial sides of the rolling elements. For facilitating circulation of lubricant between moving parts during use of the bearing, the outer bearing race is formed with lands which extend axially outwardly of the raceway with a slight radially inwardly directed taper of about 10.degree. to the bearing axis.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: April 6, 1993
    Assignee: McGill Manufacturing Company, Inc.
    Inventor: James S. Porter
  • Patent number: 5150975
    Abstract: The bearing lubricating system comprises a casing having a bore which defines a reservoir and a well sized to receive a sufficient volume of a suitable liquid lubricant. A return passage in the casing allows fluid flow from the well to the reservoir. A shaft extends through the reservoir and through the well. At least one bearing is situated in the bore between the reservoir and the well. A pumper element is mounted on the shaft for rotation therewith within the well. A pair of end seals seal off the opposite ends of the bore from the ambient.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: September 29, 1992
    Assignees: Hy-Tech Hydraulics, Inc., Michael P. Breston
    Inventors: Kenneth E. Major, John L. Baker, David K. Braunagel
  • Patent number: 5116145
    Abstract: Roller bearing for a shaft or similar, containing an inner race and outer race between which one or more rows of rollers are mounted and whereby lubricant can be applied between the rollers and races, characterized by the fact that the roller bearing (3) contains a pump (9) or part thereof with which the lubricant can be sucked form a tank and delivered.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: May 26, 1992
    Assignee: SKF Industrial Trading and Developement Company BV
    Inventor: Alexander Jan de Vries
  • Patent number: 5102240
    Abstract: A rotatable member (3) has on its outside surface a contoured surface portion (15) which widens conically upwards in diameter, is contiguous with a lubricant storage chamber (14) and extends axially to near a bearing (11) by which the rotatable member (3) is rotatably mounted in a housing (4). Lubricant discharging downwardly by gravity from the bearing (11) returns upwardly along the surface part (15) and reaches a zone which is below the bearing (11) and from which the same takes up lubricant. The bearing (11) is therefore supplied with lubricant during the rotation of the rotatable member (3) so that uniform lubrication in a thin layer is ensured. The mounting is used more particularly in a cap of a cap spinning machine or cap twisting machine.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: April 7, 1992
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Oehy, Rainer Busch
  • Patent number: 5074408
    Abstract: A bearing assembly for rotatably supporting a conveyor roller tube for a belt conveyor about a fixed shaft which includes a housing to which a roller tube is attached, an end cover positioned on the fixed shaft adjacent one side of the housing, and a bearing interposed between the housing and end cover permitting rotation of the housing relative to the end cover. The end cover completely covers the end of the shaft about which it is positioned and cooperates with the housing for effectively protecting the bearing from exposure to contaminants. During conveyor operation, the end cover prevents migration of contaminants along the shaft from the end thereof and the housing centrifugally expels contaminants which may enter the space between the housing and the end cover. In addition, the housing, bearing end cover, and shaft cooperate to limit axial shifting of the assembly components relative to one another.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: December 24, 1991
    Assignee: Wyko, Inc.
    Inventors: Ian Smith, Carmin C. Simerly, Jim E. Hilty, Mark S. Byerley
  • Patent number: 5051007
    Abstract: Lubrication system for a centrifugal pump having a bearing mounted around a rotatable vertical shaft. The lubrication system includes a reservoir for holding a quantity of lubricant, structure for withdrawing lubricant from the reservoir, a stator, and a passageway for communicating lubricant from the reservoir to the bearing. The withdrawing structure includes a rotor connected to the vertical shaft. The stator encircles the rotor with the rotor and stator extending axially into the reservoir. The stator minimizes vortexing and churning of the lubricant in the reservoir during rotation of the rotor. Dynamic seals are not necessary with the lubrication system. Accordingly, concern of heat generation and wear associated with dynamic seals has been eliminated.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: September 24, 1991
    Assignee: National-Oilwell
    Inventors: George J. Maddox, Leon K. Stanmore, Terry M. Wold
  • Patent number: 4942944
    Abstract: Apparatus to lubricate generator bearings with an oil-air mist is disclosed. A screw pump, preferably an assembly of components comprising a ring, a teflon seal, a pump rotor and a hub is secured onto a rotor shaft of a generator for rotation therewith. The rotor shaft has at least one passageway extending radially from an axial bore therein through which oil is transferred. The screw pump has a first orifice coincident with the rotor shaft passageway, a second orifice, a passageway extending from the first orifice to the second orifice through which the oil is directed into a cavity in the generator housing where it mixes with air to form a mist to lubricate the bearing, a circumferential surface fitting within an opening in the generator housing, and a helical groove in the circumferential surface through which the oil-air mist is evacuated during rotation of the generator rotor shaft.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: July 24, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Gary A. Frey, James D. Lengel
  • Patent number: 4940341
    Abstract: A shaft (3) having a central channel (8) supplies shaft bearings (5, 6, 7) with oil. The central channel leads to an oil exit opening (9) situated in the region of a shaft bearing (2). In order to be able to supply the shaft bearing (2) with oil in metered fashion, a covering (14) is provided on the shaft bearing (5, 6, 7), with the covering (14) comprising a cylindrical section (11) that surrounds the shaft (3) in non-contacting fashion and covers the annular gap between the stationary bearing ring (7) and the rotating bearing ring (5). The cylindrical section (11) has an increased height (h) over a part of its circumference, and the oil exit opening is situated between the lower part (12') and the upper part (12") of the inwardly directed edge of the covering.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: July 10, 1990
    Assignee: Leybold Aktiengesellschaft
    Inventors: Guenter Schuetz, Joerg Schwartz
  • Patent number: 4915515
    Abstract: The horizontally mounted rotational bearing arrangement for high speeds of rotation is mounted in a casing in two radial rolling bearings. Each radial rolling bearing comprises rolling members guided by an associated cage, and further comprises a groove provided at the shaft and operative as an inner race, as well as an outer race. A respective slinger ring is disposed between each radial rolling bearing and associated cover plate. An impingement surface extends around the associated slinger ring and is in alignment with an operative edge of such slinger ring. This impingement surface is effective for returning lubricant to the rolling members of the associated radial rolling bearing. The cage of each radial rolling bearing is constructed such that by virtue of its movement in operation, the lubricant is conveyed to the rolling members of the associated radial rolling bearing.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: April 10, 1990
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Reinhard Rohrer, Henri Burki, Jurg Bischofberger, Raymond Frey
  • Patent number: 4905794
    Abstract: A lubricating device of a turret type change-over device wherein a plurality of rotating bodies are mounted on a rotatable turret table, comprising: a plurality of bearings adapted to rotate the rotating bodies with respect to the rotatable turret table; a lubricating oil chamber provided in the vicinity of the bearings; and a lubricating oil tank provided within the lubricating oil chamber, the oil tank being rotated in accordance with the rotation of the turret table to retain a lubricating oil therein and supply the same to the bearings.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: March 6, 1990
    Assignee: Teijin Seiki Company Limited
    Inventors: Takami Sugioka, Toshihiro Yudate
  • Patent number: 4874069
    Abstract: Lubrication for a roller clutch cage of the type that is installed to a cam race that is in turn secured tightly to a mounting drum is improved by providing an internal oil passage in the cage that is open on one side. When the cam race is secured to the drum, the open passage is closed off against a face of the drum, providing a secondary closed oil path that connects to the primary oil path already formed between the cam race and the drum face. Therefore, pressurized oil can be provided all the way though the cage, directly to the bearing surface of the cage.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: October 17, 1989
    Assignee: General Motors Corporation
    Inventor: Frederick E. Lederman
  • Patent number: 4869641
    Abstract: A compressor driven by a motor delivers air under pressure to a plurality of paint spray guns. An air circulation fan is incorporated with the motor to cool the apparatus during operation. The compressor shaft includes bearings on each end and the bearing on the lower end is physically separated from the lower end of the compressor to prevent oil contamination of the air being discharged. A pump is associated with the separated bearing which delivers oil to lubricate the bearing when the compressor is in operation.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: September 26, 1989
    Assignee: AccuSpray, Inc.
    Inventor: John W. Hufgard
  • Patent number: 4858427
    Abstract: A secondary oil system for a flight propulsion gas turbine engine includes an oil reservoir rotatable as a unit with a rotor shaft of the engine, means conducting a portion of the primary oil flow of the engine to the rotating reservoir, a discharge orifice on the reservoir limiting centrifugal force induced oil discharge from the reservoir to a secondary oil flow rate substantially less than the primary oil flow rate to a bearing supporting the rotor on a case of the engine, and means for conducting the secondary oil flow to the bearing. The secondary oil flow persists for on the order of ten minutes after primary oil flow stops.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: August 22, 1989
    Assignee: General Motors Corporation
    Inventor: Nicholas J. Provenzano
  • Patent number: 4755103
    Abstract: A flow machine, especially a gas turbine equipped with means for separating an oil/air mixture and for returning centrifuged oil droplets to a circulation having oil consuming devices such as bearing places and with a vent line leading from the center toward the outside; the separating means includes a porous air-permeable element built into the hollow main shaft between two oil-impermeable walls whereby radially outer feed openings for the oil/air mixture are arranged in the upstream wall which correspond to openings in the main shaft while an air discharge opening is arranged in the downstream wall in its center which is in communication with the vent line.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: July 5, 1988
    Assignee: MTU Motoren- und Turbinen-Union Munchen GmbH
    Inventor: Helmut Streifinger
  • Patent number: 4715303
    Abstract: A lubricating device for a revolving lock stitch shuttle of machines such as sewing and embroidering machines comprises a shuttle body which has a hub portion which surrounds its associated shuttle arbor and which lies adjacent a bearing mounting for the arbor. The hub portion is hollow and defines a lubricating oil chamber between it and the associated bearing and a gap between the shuttle hub portion and the associated bearing is bridged by a fixed ring member which is carried on a bracket which is secured to the bearing. The ring member has an opening therethrough providing an access for a nozzle tube for feeding oil from an external reservoir to the hub recess from when the oil is advanced by the centrifugal force of the rotation of the shuttle to the periphery of the shuttle.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: December 29, 1987
    Assignee: Pfaff Industriemaschinen GmbH
    Inventors: Edgar Busch, Lothar Schilling, Klaus Ziegler
  • Patent number: 4704039
    Abstract: A roller bearing lubricating device including a roller bearing for supporting a rotary shaft, a bearing housing for supporting the bearing, an oil tank provided in the housing for storing oil lubricating oil, a weir for forming an oil reservoir for dipping part of the bearing, and an oil supply passage for communicating between the tank and the reservoir with a part thereof having a predetermined minimum cross-sectional area.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: November 3, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Nobuhiro Ide