Rotary Bodies Patents (Class 74/434)
  • Patent number: 7677127
    Abstract: There is provided a rotation transmission assembly that can be produced in large quantities and at low cost and has an anti-rotation function and an anti-release function.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: March 16, 2010
    Assignee: Diamet Corporation
    Inventors: Tsuneo Maruyama, Yuji Aoki, Teruo Shimizu
  • Patent number: 7641850
    Abstract: A technique for net shaping gear teeth of a high performance power transmission gear from a powder metal workpiece includes heating a powder metal workpiece in the form of a near net shaped gear blank having gear teeth surfaces above its critical temperature to obtain an austenitic structure throughout its surfaces, isothermally quenching the workpiece at a rate greater than the critical cooling rate of its surfaces to a uniform metastable austenitic temperature just above the martensitic transformation temperature, rolling the gear teeth surfaces of the workpiece to a desired outer peripheral profiled shape between opposed dies, each die having an outer peripheral profiled surface, while holding the workpiece at the uniform metastable austenitic temperature, the gear teeth surfaces undergoing densification, plastic deformation, and strengthening as a result of the rolling operation, and cooling the workpiece through the martensitic range to thereby harden the surfaces of the gear teeth.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: January 5, 2010
    Assignee: The Penn State Research Foundation
    Inventors: Nagesh Sontti, Maurice F. Amateau, Suren B. Rao
  • Publication number: 20090289408
    Abstract: A sheet transport apparatus is provided with a processing section having a processing position to process a sheet, and a first roller pair and a second roller pair disposed at the front and back of the processing section to transport the sheet to the processing section at a predetermined velocity. Each of driving transmission mechanisms respectively for driving the first roller pair and second roller pair is provided with a rotary shaft for supporting the roller, a rotary member provided with a circular fit hole to fit with the rotary shaft, and a holder member in which a D-shaped press-fit hole is formed to press-fit to the rotary shaft, and to the rotary shaft are attached the rotary member with the circular fit hole formed therein and the holder member with the D-shaped press-fit hole formed therein.
    Type: Application
    Filed: May 19, 2009
    Publication date: November 26, 2009
    Applicant: NISCA CORPORATION
    Inventors: Masataka Hamada, Fumihito Endo, Junya Nakajima, Koji Kanda
  • Publication number: 20090260469
    Abstract: In a flexspline of a wave gear device, an annular flange thereof is constructed from a first annular part bent at a right angle from an outer peripheral edge of a diaphragm, and a second annular part caused to inwardly protrude at a uniform width from a leading end of the first annular part. It is possible for the annular flange to be disposed within the region where the diaphragm is formed, as viewed in the direction of an axis of the device. An outer diameter can be reduced to a greater extent than with a “silk hat”-shaped flexspline; and when a hollow wave gear device is manufactured, a hollow diameter can be more readily increased than in a case where a cup-shaped flexspline is used.
    Type: Application
    Filed: March 20, 2009
    Publication date: October 22, 2009
    Applicant: Harmonic Drive Systems Inc.
    Inventor: Satoru KANAI
  • Publication number: 20090205453
    Abstract: A method of manufacturing a forged article (10) including a surface (18). The method includes defining a negative tooling pattern (52) based on the surface and providing a tooling set (28) having an anvil (30) and top (36) and bottom die (34). An upper surface (40) of the bottom die conforms to the negative tooling pattern. When the tooling is assembled the anvil extends through the bottom die and defines an axis. Additionally, the bottom and top dies cooperate to define a die cavity (76). A hollow blank (38) is preheated and placed on an anvil and into the die. In a single stroke, the hollow blank is pressed between the top and bottom dies in a pressing direction that is parallel to the axis. The preheating temperature Tw is a function of the homologous temperature ratio Tw/Tm is between 0.62 and 0.80, where Tm is the absolute melting temperature of the alloy.
    Type: Application
    Filed: January 31, 2005
    Publication date: August 20, 2009
    Inventor: Bamidele O. Oyekanmi
  • Patent number: 7540212
    Abstract: A method of manufacturing a clutch housing which accommodates therein a plurality of clutch plates adapted to be engaged together so as to transmit a torque, wherein a drum portion and a boss portion can be integrally formed from a plate material so as to form a thick portion having a thickness of not less than approximately 1.3 times as large as that of the plate material and a thin portion having a thickness of not greater than approximately ½ of that of the plate material.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 2, 2009
    Assignee: NSK Warner K.K.
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa
  • Patent number: 7530284
    Abstract: A multiplate clutch outer part is formed by pressing a steel plate. The multiplate clutch outer part includes: an end wall portion; and a cylindrical portion having its one end formed continuously with the outer peripheral end of the end wall portion, and opened at the other end. A bottom face of each of outer grooves is formed to be an inclined face which is getting far away from an axis of the cylindrical portion toward the open end of the cylindrical portion. Arc faces formed at inner corners of each of the outer grooves has an increasing radius of curvature toward the open end of the cylindrical portion. Thus, there is provided a multiplate clutch outer part for which press working capable of minimizing ironing resistance can be performed to reduce defective forming rate.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: May 12, 2009
    Assignee: Kabushiki Kaisha F.C.C.
    Inventors: Hiroshi Sano, Takahiro Ito
  • Publication number: 20090087563
    Abstract: The invention relates to a method for producing a displacer component that is coated with a diamond coating or layer as well as such a structural component (as a tribologically loaded part). In order to convey or dose a chemically aggressive fluid, a basic structural component (2, 3) is accurately produced in a first dimension (m1) from a chemically not sufficiently resistant but mechanically sufficiently stable first material (A) in a material removing manner. At least the surface sections of said first accurately sized basic component (2, 3) which are actively involved in the displacement are then coated with an at least 1 ?m thick layer (10) of synthetic diamond in a coating process such that a second size (m2) of the structural component is obtained that fits the displacer unit (1). The inventive method makes it possible to produce a chemically resistant, friction reduced structural component for displacing the chemically aggressive fluid.
    Type: Application
    Filed: November 2, 2004
    Publication date: April 2, 2009
    Inventors: Gerald Voegele, Thomas Weisener
  • Patent number: 7498683
    Abstract: A device for converting flow energy of a fluid into electrical energy, said device comprising: h) a rotor (1) which can be driven by the fluid and comprises rotor shaft (2), i) an electric generator (16, 17) comprising a generator shaft (6), j) a gear system comprising a gear shaft (4; 4?) for transferring a rotational movement of the rotor shaft (2) to the generator shaft (6), k) a support structure (30), l) a carrier structure (20) which forms a rotor bearing (2a) for the rotor shaft (2), a gear bearing (4a; 60) for the gear shaft (4; 4?) and a generator bearing (6a) for the generator shaft (6); m) and an adjusting bearing (40; 75) which adjustably bears the carrier structure (20) relative to the support structure (30); n) wherein at least one of the gear shaft (4; 4?) and the generator shaft (6) is arranged lower than the adjusting bearing (40; 75).
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: March 3, 2009
    Inventor: Wilhelm Landwehr
  • Patent number: 7490529
    Abstract: A method for manufacturing a gear and a gear for a transmission, in which an outer peripheral gear part formed on an outer peripheral wall surface of a main body of a gear, an annularly-shaped concave portion annularly formed at a radial inner part on at least one axial end surface of the main body of the gear within the outer peripheral gear part thereof, a dog gear part formed on an outside peripheral wall surface at a central part formed on the annularly-shaped concave portion, and a taper part comprising an inner corn for being synchro formed on an inside peripheral wall surface formed on the annularly-shaped concave portion, are formed integrally by forging.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: February 17, 2009
    Assignee: O-Oka Corporation
    Inventors: Tomoyoshi Okada, Mitsushige Ooka, Junichi Ooka
  • Publication number: 20090016920
    Abstract: A screw pump is provided with a pair of screw rotors serving as fluid transfer bodies. With respect to a rotation angle (x) around an axis of each of the screw rotors, a change of a lead angle (?) from a winding start angle (0), which is the rotation angle (x) corresponding to a leading end of a spiral groove, to a winding end angle (E), which is the rotation angle (x) corresponding to a trailing end of the spiral groove, can be expressed by a lead angle change function ?(x). The lead angle change function ?(x) is structured by a combination of a plurality of change functions ?1(x) and ?2(x) having different manners of changing. It is possible to arbitrarily set a manner in which the lead angle (?) changes in accordance with a combination of a plurality of change functions ?1(x) and ?2(x). Therefore, it is possible to arbitrarily set a fluid compression characteristic of the pump in a relation with an axial length (L) of the screw rotor.
    Type: Application
    Filed: June 14, 2005
    Publication date: January 15, 2009
    Inventors: Shinya Yamamoto, Satoru Kuramoto, Ryosuke Koshizaka, Hideyuki Ito
  • Publication number: 20080295631
    Abstract: A driven component, in particular a printing couple or folding unit, of a printing press, having several rotating elements, in particular cylinders or rollers, wherein at least two rotating elements are assigned to intermeshing drive gears, is disclosed. The drive gear of a first rotating element, which meshes with the drive gear of a second rotating element, is assigned a co-rotating gear, which is connected to the drive gear of the first rotating element via at least one spring element or bending element, which extends in the axial direction of the first rotating element. The co-rotating gear can be rotated with respect to the drive gear in such a way in the circumferential direction that a meshing between the two intermeshing drive gears that is affected in principle by backlash can be kept free of backlash.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 4, 2008
    Applicant: manroland AG
    Inventors: Peter KNAUER, Arthur Meitinger, Josef Singler
  • Publication number: 20080276740
    Abstract: The invention relates to a drive unit comprising an internal combustion engine and a gearbox for motor vehicles, wherein for transmitting a torque to the transmission a crankshaft of the internal combustion engine is connected to a transmission-side element via a carrier plate. According to the invention, the carrier plate is designed in at least two parts with separate plate sections.
    Type: Application
    Filed: December 20, 2007
    Publication date: November 13, 2008
    Applicant: Audi AG
    Inventor: Christian Meixner
  • Publication number: 20080245171
    Abstract: The invention concerns a single direction coupling device, including a first transmission member (10) fitted with a first saw-like contrate toothing (13), mobile in rotation about an axis XX and axially positioned by an elastic member, and a second transmission member (14) fitted with a second saw-like toothing (17), mobile in rotation about an axis YY, meshed with the first transmission member (10), characterized in that the XX axis is perpendicular to the YY axis.
    Type: Application
    Filed: April 4, 2008
    Publication date: October 9, 2008
    Applicant: ETA SA MANUFACTURE HORLOGERE SUISSE
    Inventors: Julien Chaignat, Marco Bettelini
  • Publication number: 20080150229
    Abstract: A transport system for cut sheet media has a first and second cylinder to form a nip, a support subsystem to transport edges of cut sheets having at least one image into and out of the nip, and an array of contact points on each cylinder to make contact with the cut sheets without marking the image. A wheel for a print medium transport system has an outer rim having a series of contact points, an inner hub supporting a means to accommodate a drive shaft, and an internal spring connecting the outer rim to the inner hub. A method of transporting cut sheets in a printing system forms a nip between at least one pair of cylinders, each cylinder having an array of contact points, guides a first edge of a cut sheet into the nip, and uses the arrays of contact points to transport the cut sheets through one of either a fusing or drying process.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: David K. Biegelsen, David G. Duff, Lars E. Swartz, Ashish V. Pattekar
  • Publication number: 20080148893
    Abstract: The invention relates to a collar, made form plastically deformed material, of a hub, said collar holding at least one inner ring of a wheel bearing unit on the hub in an axially fixed mariner, and end-side teeth, for engaging in a mating toothing, being formed in said collar.
    Type: Application
    Filed: March 9, 2006
    Publication date: June 26, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Roland Langer, Ernst Masur, Ralf Heiss, Benno Fueller, Peter Niebling
  • Publication number: 20080141811
    Abstract: A toothed wheel is described for a play-free spur gear set, comprising a hub (1), with a toothed ring (2) supported by the hub (1), which ring is split into two partial rings along a dividing plane normal to an axis, namely into a ring piece (3) fixed to the hub and a ring crown (4) mounted to rotate coaxially relative to the above, and an annular spring (5) enclosing the hub (1) with the circumferentially-opposed ends (6) resting on support webs (7, 8) embodied integrally with both partial rings, overlapping each other in the axial direction and arranged behind each other in the circumferential direction of the toothed ring.
    Type: Application
    Filed: March 21, 2005
    Publication date: June 19, 2008
    Inventor: Christian Sandner
  • Publication number: 20080141812
    Abstract: A gear including a gear shaft, and a gear wheel made of a resin material, the gear wheel being fixed to the gear shaft by molding. The gear having a plurality of concave portions and convex portions that repeat in a circumferential direction. The plurality of concave and convex portions are arranged such that they extend in the axial direction of the gear shaft, and arranged such that the convex portions of one concave and convex group are adjacent to the concave portions of the other concave and convex group. Due to the relative displacement of the concave portions and the convex portions, stepped portions are formed at a boundary between the concave and convex groups in the circumferential direction of the gear shaft.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 19, 2008
    Applicant: MITSUBA CORPORATION
    Inventor: Hiroji Okabe
  • Publication number: 20080134823
    Abstract: A rotation apparatus of a flat display including a standard shaft which is implanted and fixed in the base, a clutch plate which is pivotally supported by the standard shaft so as to be able to freely rotate and is driven to rotate by rotation drive means as needed, a standard gear which is attached and fixed to the standard shaft, an idle gear which is attached to the clutch plate to be able to freely rotate and is engaged with the standard gear to roll around the standard gear, and a rotation output gear which is engaged with the idle gear and attached to the clutch plate to be able to freely rotate and orbit the circumference of the standard gear while rotating itself to support the flat display via the supporting shaft.
    Type: Application
    Filed: March 30, 2007
    Publication date: June 12, 2008
    Applicant: Simotec Inc.
    Inventor: Yasuyuki Uemura
  • Publication number: 20080128531
    Abstract: An oscillating sprinkler head transmission for alternately driving an output shaft and sprinkler head nozzle to oscillate it with spring bias being provided to prevent the transmission from being placed in an inoperative position, where the sprinkler head is not oscillated.
    Type: Application
    Filed: October 29, 2007
    Publication date: June 5, 2008
    Inventor: Carl L.C. Kah
  • Patent number: 7366058
    Abstract: Gear for day of the month display mechanism in a watch movement, including: a driving organ (1), a driven organ (50), characterized in that said driving organ (1) is provided with z1 first teeth (120) and z2 second teeth (121), the height of the second teeth (121) being lower than the height of the first teeth (120), and in that said driven organ (50) is provided with z3 third teeth (501) and z4 fourth teeth (503), the height of the third teeth (501) being greater than the height of the fourth teeth (503), the height of the z1 first teeth (120) allowing the z3 third teeth (501) as well as the z4 fourth teeth (503) to be driven, the height of the z2 second teeth (121) allowing however only the z3 third teeth (501) but not the z4 fourth teeth (503) to be driven.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: April 29, 2008
    Assignee: Ronda AG
    Inventors: Eric Marki, Michiel Groothuis
  • Patent number: 7354212
    Abstract: An image forming apparatus includes a chassis, a motor, a drive transmission gear that receives rotational force from the motor, a feed roller rotatably supported by the chassis, an intermediate gear that has a circular bearing, receives rotational force from the drive transmission gear, and transmits rotational force to the feed roller gear, and a gear support axle that is inserted through the bearing of the intermediate gear for rotatably supporting the intermediate gear. The gear support axle is provided with a bearing engagement part. The bearing engagement part has at least one flat section, at least one circular section, and at least two support portions formed between the flat section and the circular section, such that the gear support axle is supported by the bearing at at least one of the two support portions.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: April 8, 2008
    Assignee: Funai Electric Co., Ltd.
    Inventor: Kunio Sawai
  • Publication number: 20080031749
    Abstract: A first rotor is rotatably supported by a housing. A second rotor rotates integrally with a rotary shaft. A power transmission mechanism is capable of transmitting power from the first rotor to the second rotor. When supplied with a current, an electromagnetic coil is capable of causing the armature plate to adhere to the first rotor. In a state where the armature plate adheres to the first rotor, the spring clutch couples the second rotor to the first rotor. An urging member is accommodated in the second rotor. The urging member is located between the rotary shaft and the armature plate. Therefore, the power transmission mechanism is compact and achieves a high performance.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 7, 2008
    Applicant: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Nobuaki Hoshino, Masaki Ota, Xiaoliang Wang
  • Publication number: 20070284212
    Abstract: A multiplate clutch outer part is formed by pressing a steel plate. The multiplate clutch outer part includes: an end wall portion; and a cylindrical portion having its one end formed continuously with the outer peripheral end of the end wall portion, and opened at the other end. A bottom face of each of outer grooves is formed to be an inclined face which is getting far away from an axis of the cylindrical portion toward the open end of the cylindrical portion. Arc faces formed at inner corners of each of the outer grooves has an increasing radius of curvature toward the open end of the cylindrical portion. Thus, there is provided a multiplate clutch outer part for which press working capable of minimizing ironing resistance can be performed to reduce defective forming rate.
    Type: Application
    Filed: June 8, 2006
    Publication date: December 13, 2007
    Inventors: Hiroshi Sano, Takahiro Ito
  • Publication number: 20070283777
    Abstract: A plastic injection-molded gear that can prevent the occurrence of noise during meshing attributed to molten-liquid-induced creases, suppress deformations on a rim and a web, and suppress displacement of a meshing position is provided. A rim, on which teeth are formed, is supported by a first overhanging section, a second overhanging section, and radial direction ribs. The first overhanging section projects in a cantilevered manner from an outer peripheral edge of a web. The second overhanging section extends in an outward radial direction from a tip side of the first overhanging section. The radial direction ribs are formed straddling the first overhanging section and the second overhanging section. A connecting section between the rim and the second overhanging section is displaced from a meshing position of the teeth in a teeth width direction.
    Type: Application
    Filed: May 21, 2007
    Publication date: December 13, 2007
    Inventors: Yasuhiro Suzuki, Issei Sato
  • Publication number: 20070283776
    Abstract: A resin gear has a plurality of teeth on an outer periphery thereof. One surface of each tooth has a tooth plane which meshes with another gear. The tooth thickness is substantially uniform from a tooth tip to a tooth root. A reinforcing rib is provided on the surface of each tooth on the opposite side from the tooth plane.
    Type: Application
    Filed: May 2, 2007
    Publication date: December 13, 2007
    Applicant: MURATA KIKAI KABUSHIKI KAISHA
    Inventor: Masahiro FUJIMARU
  • Patent number: 6976921
    Abstract: The invention relates to a rotationally symmetrical coupling comprising an annular hub made of a rigid material, which is surrounded by an outer ring made of a rubber-elastic material. The coupling also comprises an outer contouring, which is located on the outer diameter and which is provided for positively transmitting torques, whereby the outer ring is reinforced by an embedded, annular, rigid solid body. The aim of the invention is to achieve a quieter operation of a coupling of the aforementioned type and to better protect this coupling from becoming damaged. To these ends, the invention provides that the rubber-elastic material is silicone and that the annular, rigid solid body, on the outside, has a shape, which is similar to that of the outer contouring of the outer ring and which maintains, over the circumference, a nearly constant distance from the outer contouring of the outer ring. The rigid solid body is preferably comprised of a curved, metallic strip material having a constant thickness.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 20, 2005
    Assignee: Hackforth GmbH
    Inventors: Andreas Mehlan, Jürgen Walter
  • Patent number: 6905432
    Abstract: A chain drive for pivot chains (7) or round link chains (8) having spur gears (2) and a polygonal chain wheel (10) reduces variations in velocity and acceleration transferred to the chains (7), (8). The driven gear wheel (3a) and the driving gear wheel (4a) consist of noncircular gear wheels having a set gear ratio adjustment so that the driving gear wheel (4a) is put in such a position to the driven gear wheel (3a) so that the slowest angular velocity coincides with the corners (29a) of the polygon of the chain wheel (10) and the fastest angular velocity occurs at the middle of the polygon straight lines (29b) of the chain wheel.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: June 14, 2005
    Inventor: Jorg Oser
  • Patent number: 6868950
    Abstract: A splined annular member has spline teeth formed in its cylindrical wall. The teeth are formed as an arrangement of alternating ridges which protrude inwardly and troughs formed between the ridges. Each ridge has a transverse (circumferential) groove that extends outwardly. The groove is defined by two side walls that face each other and a bottom portion extending between the side walls. The side walls are substantially parallel to each other, and at least one of the junctions between the bottom portion and the side walls is formed by half blanking. The spline grooves increase the overall rigidity of the annular member without increase in weight or size. Thus, the present invention provides a light-weight and small-size splined annular member having high rigidity and an automatic transmission incorporating the splined annular member.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: March 22, 2005
    Assignee: Aisin AW Co., Ltd.
    Inventor: Kenji Masegi
  • Publication number: 20040259675
    Abstract: This invention includes a sprocket assembly for facilitating the derailing of the chain of a bicycle transmission and other prime movers. The first embodiment of the invention relates to a sprocket gear having at least two sprockets axially and concentrically positioned relative to one another. Each sprocket includes a non-circular configuration having at least one long radius and at least one short radius. The sprockets being axially aligned adjacent to one another such that the short radius of one sprocket is axially substantially aligned with and substantially equal in length with said long radius of an adjacent sprocket. The second embodiment of the present invention provides a sprocket assembly having two sprockets with the tooth being displaced by less than one tooth relative to each other. Thus, it is possible to vary the relationship between the teeth of the small sprocket and the chain to engage these teeth without having to vary the phase relationship between the larger and smaller sprockets.
    Type: Application
    Filed: April 16, 2004
    Publication date: December 23, 2004
    Inventor: Jesse R. Chattin
  • Patent number: 6820514
    Abstract: A synchronizer body (1) of a synchronizing device for manual transmissions comprising a base body (2) made out of sheet metal by shaping, an inner toothing (11), and an outer toothing (10) and at least one reception (5) formed in the base body (2) for receiving a spring-loaded detent element (7) forms an assembled unit with the spring-loaded detent element (7).
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: November 23, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Josef Schwuger, Rudolf Sinner, Hartwig Waldert
  • Publication number: 20040194566
    Abstract: There is provided a resin gear 1 capable of improving the strength of a key receiving portion, which is engageable with a key of a driving shaft, to prevent the key receiving portion from being broken by external force applied during rotation. In the resin gear 1, an outside rim 6 is connected to an inside hub 4 by a web 7 in radial directions. On the side of one end of the hub 4, a key receiving portion 10 for engaging a key of a driving shaft 2 is formed. The key receiving portion 10 has a side wall 1 for preventing relative rotation of the key 8 to the hub 4, and a bottom wall 12 for allowing the key 8 and hub 4 from being positioned in directions parallel to the driving shaft 2.
    Type: Application
    Filed: April 1, 2004
    Publication date: October 7, 2004
    Inventor: Masaru Takayama
  • Patent number: 6776274
    Abstract: An assembly for use in a vehicle driveline comprises a housing with an inner surface and an outer surface for a vehicle driveline component, a retention element disposed in the housing, and at least one deformation formed on the inner surface operatively in contact with the retention element to retain the vehicle driveline component in the housing. This design and method of manufacture eliminates the need for differently sized spacers because the location of the deformations and the retention element can be tailored relative to the actual location of the components to ensure proper distance between components and the retention element. Moreover, because the spacer may be used as the retention element, the need for a snap ring is eliminated.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: August 17, 2004
    Assignee: Koppy Corporation
    Inventor: Ronald E. Prater
  • Patent number: 6729199
    Abstract: The invention concerns an apparatus for torque transmission and axial securing of a first (24) and a second (26) torque conducting component. The apparatus has the form of a ring shaped component (20), which possesses along its circumference projections (22) which are spaced from one another and which are insertable in such a manner in the spaces between projections (28) of the second component (26) which lies on a surface (30) of the first component (24), that the sides of the projections (22) which face the surface (30) of the first component (24) can be affixed to the first component (24).
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: May 4, 2004
    Assignee: ZF Friedrichshafen AG
    Inventors: Josef Haupt, Alfred Skrabs, Andreas Beisswenger
  • Patent number: 6716907
    Abstract: A phenolic molding composition containing 40 to 100 parts by weight of inorganic fiber, 30 to 90 parts by weight of natural silica powder with a mean particle size of from 20 to 150 &mgr;m, and 1 to 15 parts by weight of a rubber component, as main components, in 100 parts by weight of resol-based phenolic resin. Preferably, the inorganic fiber contains 50% or more by weight of glass fiber. Further preferably, the natural silica powder is shaped like pulverized powder. A pulley is molded of a phenolic molding composition defined above.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: April 6, 2004
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Keiji Asai, Hirokazu Arai
  • Publication number: 20040050199
    Abstract: The invention relates to a rotationally symmetrical coupling comprising an annular hub (2) made of a rigid material, which is surrounded by an outer ring (3) made of a rubber-elastic material. The coupling also comprises an outer contouring, which is located on the outer diameter and which is provided for positively transmitting torques, whereby the outer ring (3) is reinforced by an embedded, annular, rigid solid body (7). The aim of the invention is to achieve a quieter operation of a coupling of the aforementioned type and to better protect this coupling from becoming damaged. To these ends, the invention provides that the rubber-elastic material is silicone and that the annular, rigid solid body, on the outside, has a shape, which is similar to that of the outer contouring (5) of the outer ring (3) and which maintains, over the circumference, a nearly constant distance from the outer contouring (5) of the outer ring (3).
    Type: Application
    Filed: May 2, 2003
    Publication date: March 18, 2004
    Inventors: Andreas Mehlan, Jurgen Walter
  • Publication number: 20040045389
    Abstract: A housing and gear assembly comprises a cylindrical rotating housing having an inner cylindrical wall and a center bore for rotatably mounting the housing on an elongated shaft. An internal ring gear has a plurality of internal gear teeth, an external cylindrical wall and a plurality of spaced apart broach teeth projecting radially outwardly from the external wall for cutting engagement with the internal wall of the housing as the ring gear is press fit into the housing to fixedly and rotationally secure the ring gear to the housing.
    Type: Application
    Filed: May 5, 2003
    Publication date: March 11, 2004
    Inventor: David Mark Pascoe
  • Patent number: 6688153
    Abstract: A method for producing a unitary toothed part with a shaft and the resulting products. In the process, a blank is formed. The blank includes a shaft part and a flange part. The flange part having a thicker outer diameter and a thinner inner diameter. The outer diameter is formed into a tubular part by drawing. A plurality of teeth and remnants are formed by extruding the tubular part. At least one spline is formed by extruding the shaft part. Through the steps of forming, drawing, and extruding, a blank is made into a unitary part having teeth and a shaft thus increasing precision, rigidity, durability, and reducing forming costs.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: February 10, 2004
    Assignee: Aida Engineering Co., Ltd.
    Inventors: Hisanobu Kanamaru, Nobuyuki Ishinaga, Toshio Suzuki
  • Publication number: 20030131678
    Abstract: An injection molded resin gear 1 includes a rim 4, a hub 3 and a web 5 which connects the rim 4 to the hub 3. A plurality of ribs 7 for guiding a molten resin, which is injected from pin point gates 8, to the hub 3 protrude from the outer periphery of the hub 3 on one side of the web 5 so as to correspond to the pin point gates 8. The ribs 7 are formed so as to be recessed from the side face 10 of the hub 3. In the connecting portions of the ribs 7 to the hub 3, fillet portions 12 are formed for smoothly guiding the flow of the resin from the hub 3 toward the web 5 when the injection molded resin gear 1 is formed.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 17, 2003
    Inventors: Koji Noguchi, Tadashi Noguchi
  • Publication number: 20030104886
    Abstract: A synchronous drive apparatus and method, wherein the apparatus comprises a plurality of rotors comprising at least a first and a second rotor. The first rotor has a plurality of teeth for engaging the engaging sections of an elongate drive structure, and the second rotor has a plurality of teeth for engaging the engaging section of the elongate drive structure. A rotary load assembly is coupled to the second rotor. The elongate drive structure engages about the first and second rotors. The first rotor is arranged to drive the elongate drive structure and the second rotor is arranged to be driven by the elongate drive structure. One of the rotors has a non-circular profile having at least two protruding portions alternating with receding portions.
    Type: Application
    Filed: November 15, 2002
    Publication date: June 5, 2003
    Inventor: Witold Gajewski
  • Publication number: 20030083165
    Abstract: In order to provide an operationally reliable compensation in particular for polygon effects, using simple means, the invention proposes a drive to be used for a chain comprising periodically arranged chain links, the drive train of which is driven by a driving motor and has at least one non-circular wheel located on the input side.
    Type: Application
    Filed: September 3, 2002
    Publication date: May 1, 2003
    Applicant: SCHUMAG AKTIENGESELLSCHAFT
    Inventor: Dirk Hessberger
  • Patent number: 6523663
    Abstract: A clutch drum 15 is configured to reduce the weight of a clutch drum while keeping the mechanical losses of the clutch drum 15 in check. The clutched drum 15 houses several clutch plates 17 and has a cylindrical part 23 and a plurality of the teeth 25 that are arranged circumferentially around the inside of the cylindrical part 23 and extend in the axial direction. The teeth 25 have tooth cusps 29 and tooth flanks 31 on both rotational-direction sides. Bottom lands 35 are formed on the inside surface of the cylindrical part 23 between the teeth 25 in the axial direction. The outside recesses 37 are formed on the portions of the outside surface of the cylindrical part 23 that correspond to the teeth 25 and the inside recesses 27 are formed on the inside surfaces of the teeth 25.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: February 25, 2003
    Assignee: Exedy Corporation
    Inventor: Ikuo Murata
  • Publication number: 20020189387
    Abstract: The invention concerns an apparatus for torque transmission and axial securing of a first (24) and a second (26) torque conducting component. The apparatus has the form of a ring shaped component (20), which possesses along its circumference projections (22) which are spaced from one another and which are insertable in such a manner in the spaces between projections (28) of the second component (26) which lies on a surface (30) of the first component (24), that the sides of the projections (22) which face the surface (30) of the first component (24) can be affixed to the first component (24).
    Type: Application
    Filed: May 23, 2002
    Publication date: December 19, 2002
    Inventors: Josef Haupt, Alfred Skrabs, Andreas Beisswenger
  • Publication number: 20020184960
    Abstract: The invention concerns a driving disc for transmitting the torque from one drive unit to a hydrodynamic converter (2). The driving disc (5) has one leg (51) extending in radial direction and fastened on the output shaft (1) of the drive unit and one leg (52) extending in axial direction and fastened on supporting devices (4) of a housing (3) of the hydrodynamic converter (2). By recesses (10) spaced apart from each other in peripheral direction of the driving disc (5), there are formed in the leg (52) extending in axial direction bracket arrangements which serve to fasten the leg (52) extending in axial direction on supporting device (4) situated in the housing (3). The bracket arrangements are each formed by tongue-shaped brackets (11, 12; 11′, 12′) which seen in peripheral direction extend successively from both sides of the recess (10). The end areas of the brackets (11, 12; 11′, 12′) are each fastened on one supporting device (4).
    Type: Application
    Filed: May 23, 2002
    Publication date: December 12, 2002
    Inventors: Silvius Drees, Peter Ziemer
  • Patent number: 6449845
    Abstract: The invention relates to a method for the manufacture of a gear part with a transversely directed profile, particularly a timing belt pulley, wherein a substantially rotationally symmetrical workpiece is fixed in a flow-forming device and rotated and wherein at least one profiled flow-forming tool is infed to a circumferential area of the workpiece such that a transversely directed profile is formed. According to the invention, prior to the forming of the transversely directed profile, the circumferential area of the workpiece is provided with at least one circumferentially directed groove and the transversely directed profile is formed axially on either side of the at least one groove. The invention also relates to a gear part, particularly a timing belt pulley, which has a substantially rotationally symmetrical construction and a circumferential area and which is provided with a transversely directed profile.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: September 17, 2002
    Assignee: Leico GmbH & Co. Werkzeugmaschinenenbau
    Inventors: Gerold Specht, Silke Steinke
  • Publication number: 20020043124
    Abstract: A plastic gear is provided which includes a main body portion and a toothed portion. The main body portion is made of a synthetic resin containing reinforcement fibers. The toothed portion is made of a synthetic resin which is the same as the synthetic resin of which the main body portion is made except that it does not contain any reinforcement fibers. A method of producing such a plastic gear is also provided.
    Type: Application
    Filed: April 13, 2001
    Publication date: April 18, 2002
    Applicant: UNISIA JECS CORPORATION
    Inventors: Hirotaka Shiga, Atsushi Tsuboi, Yuzuru Morioka
  • Publication number: 20020017153
    Abstract: A gear 1 made of a resin includes webs 5 (5a and 5b) formed so that the rigidity of the web is increased by a first circumferential rib 8, a second circumferential rib 10, first diametrical ribs 11 and second diametrical ribs 12, and the circumferential sectional shape of the outermost web 5c is a corrugated shape, whereby the rigidity of the outermost web 5c is increased. As a result, it is possible to increase the rigidity of the outermost web 5c without increasing of the thickness of the outermost web 5c; to form a toothed portion 6 with a high accuracy; to reduce the deformation (for example, the amount of displacement of the toothed portion 6 and a shaft-supporting portion 4 in a rotating direction) due to an external force; and to enhance the rotation-transmitting accuracy. In this gear 1, a vibration and a noise due to the vibration can be reduced by increasing the rigidity of the web.
    Type: Application
    Filed: May 30, 2001
    Publication date: February 14, 2002
    Inventor: Kazuyuki Sakamaki
  • Patent number: 6334369
    Abstract: The invention relates to a toothed wheel unit (12) with external toothing, preferably for heavy machinery gears and/or rapidly moving gears like turbomachinery gears, comprising a toothing carrier (22) with an external toothing (20a,20b) provided on a circumferential surface and a bearing journal (32a,32b) or connection portion in at least one axial end region (24a,24b) of the toothing carrier (22), joined with the toothing carrier. The toothing carrier (22) is either provided with a toothing carrier casing (22) whose inner diameter (d1) is larger than the diameter (d2) of the bearing journal (32a,32b) or the connection portion or/and with a plurality of toothing carrier plates (248a,248b) following each other in axial direction and joined with each other.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: January 1, 2002
    Assignee: BHS Cincinnati Getriebetechnik GmbH
    Inventor: Hans-Georg Sandig
  • Patent number: 6330836
    Abstract: A steel for a gear which is formed on a drive plate gear includes; C: 0.32 to 0.38%, Si: 0.1% or less, Mn: 0.60 to 0.90%, P: 0.03% or less, and S: 0.035% or less.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: December 18, 2001
    Assignee: Fujikiko Kabushiki Kaisha
    Inventors: Hiroshi Watanabe, Masakiyo Ohya, Masato Shibata
  • Publication number: 20010045140
    Abstract: A transmission input shaft (116) is provided with spline teeth (144) of an involute cross-section and a relatively small circular thickness (146).
    Type: Application
    Filed: September 21, 1999
    Publication date: November 29, 2001
    Applicant: Kevin M. Hinman
    Inventors: ROGER A KAMMINGA, AHMAD SERESHTEH