Including Grooves Or Openings In Cylindrical Belt-engaging Surface (e.g., For Escape Of Air, Etc.) Patents (Class 474/188)
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Patent number: 8579774Abstract: A drive roller for flat belts is provided in various embodiments wherein the roller has improved characteristics for maintaining traction of belts, such as lagging applied to the roller.Type: GrantFiled: July 9, 2009Date of Patent: November 12, 2013Assignee: Deere & CompanyInventor: Daniel Eric Derscheid
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Patent number: 8398512Abstract: The invention describes a belt pulley (1) for a wet belt application, with a pulley body (2) comprising toothing (5) incorporating teeth (6) on an end face (4) for a toothed belt, and a tooth gap (7) with a tooth gap base (12) is disposed between every two teeth (6), and optionally with at least one flange (3), which is disposed—in the axial direction—on the side of the pulley body (2) and extends beyond the toothing (5) in the radial direction. Grooves (9) are provided in the region of the tooth gap base (12) and/or on an inner surface (8) of the flange (3) facing the toothing (5) for feeding away a lubricant.Type: GrantFiled: April 29, 2008Date of Patent: March 19, 2013Assignee: Miba Sinter Austria GmbHInventors: Karl Dickinger, Herbert Schmid, Wolfgang Siessl
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Patent number: 8167750Abstract: A resin pulley includes: an outer cylindrical portion having an outer circumferential surface on which a belt is to be wound; an inner cylindrical portion which is disposed radially inwards of and concentrically with the outer cylindrical portion; and a plurality of ribs connecting an inner circumferential surface of the outer cylindrical portion and an outer circumferential surface of the inner cylindrical portion. The outer cylindrical portion, the inner cylindrical portion and the ribs are formed integrally from a resin material, and the ribs are provided in such a manner as to be inclined towards a circumferential direction relative to a radial imaginary line as viewed in an axial direction.Type: GrantFiled: January 7, 2009Date of Patent: May 1, 2012Assignee: JTEKT CorporationInventors: Kazuki Hamada, Hiroshi Ueno, Kunio Yanai, Masanori Shinohara, Tomoki Uno
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Patent number: 7958635Abstract: A process for producing a pulley for a belt drive CVT, including subjecting tapered surfaces of a preform of at least one of input and output pulleys to surface hardening, subjecting the surface-hardened tapered surfaces of the preform to hard turning to form microgrooves radially spaced from one another thereon, between which microprojections are formed, and reducing a height of the microprojections. Alternatively, a process for producing a pulley for a belt drive CVT, including subjecting tapered surfaces of a preform of at least one of input and output pulleys to surface hardening, subjecting the surface-hardened tapered surfaces of the preform to shot peening, and subjecting the shot-peened tapered surfaces of the preform to finishing to form microgrooves having a substantially equal pitch thereon.Type: GrantFiled: March 23, 2005Date of Patent: June 14, 2011Assignee: JATCO LtdInventors: Makoto Yoshida, Yoshiaki Katou, Yasuo Ito
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Patent number: 7857721Abstract: Abrasion of a V-belt in a belt type continuously variable transmission accommodated in an engine unit of a motorcycle is suppressed. A V-belt wound around and contacting a primary sheave and a secondary sheave 72 is at least partially formed from a resin. A plurality of grooves aligned at a predetermined pitch in a radial direction are formed on sheave surfaces of the primary and secondary sheaves. The average pitch P(mm) of the grooves is P??0.08K×10?3+0.18, where K(Hv) indicates surface hardness of the sheave surfaces.Type: GrantFiled: July 11, 2007Date of Patent: December 28, 2010Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yousuke Ishida, Akifumi Oishi, Takuji Murayama
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Patent number: 7806793Abstract: A continuously variable belt drive transmission, including input and output pulleys each having axially opposed tapered surfaces, and an endless belt including a plurality of metal elements each having opposed side faces contacted with the respective tapered surfaces of the input and output pulleys. Each of the opposed side faces is formed with a plurality of microscopic projections and recesses arranged along a radial direction of the input and output pulleys upon being in contact with the respective tapered surfaces of the input and output pulleys. The tapered surfaces of at least the input pulley are formed with microgrooves that are radially spaced from one another and have a pitch not more than a width of each of the microscopic projections on the side faces of the metal element.Type: GrantFiled: March 23, 2005Date of Patent: October 5, 2010Assignee: Jatco LtdInventors: Makoto Yoshida, Yoshiaki Katou, Yasuo Ito, Nobuo Kino
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Publication number: 20090314230Abstract: The invention relates to a crankcase breathing system (1) for an internal combustion engine, comprising at least one oil separating apparatus with a preliminary separator (3) and a main separator (4) arranged downstream of the same, with the preliminary separator (3) comprising a diffuser (11) between an inlet (7) and an outlet (8) which expands in the direction of flow. In order to achieve high separation rates in the simplest possible way it is provided that the preliminary separator (3) is arranged integrally with the main separator (4), with preferably the preliminary separator (3) and the main separator (4) forming a separator unit (2).Type: ApplicationFiled: February 1, 2007Publication date: December 24, 2009Inventors: Günther Nagenkögl, Robert Roithinger, Robert Pöschl, Helmut Altendorfer, Andreas Schrattbauer, Christof Knollmayr
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Patent number: 7618338Abstract: A composite automotive pulley wheel and pump comprises a pulley wheel (2) and a pump (22). The pump comprises an impeller (20) carried on a rotary shaft (6), an inlet region (24) and an outlet region (26). The pulley is mounted on the shaft (6) and comprises a radially outwardly extending support (4) connected to an annular axially extending flange (10, 12), the outer surface of which is adapted to be engaged by a pulley belt. The flange (4) defines a cooling fluid passage (14) within it which extends in the circumferential direction and communicates at two circumferentially spaced positions with an inlet passage (16) and an outlet passage (18), respectively. The inlet and outlet passages (16, 18) extend through the support (4) and the shaft (6) and communicate with the outlet region (26) and the inlet region (24), respectively.Type: GrantFiled: June 11, 2003Date of Patent: November 17, 2009Assignee: Ricardo UK LimitedInventor: David Gareth Greenwood
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Patent number: 6254503Abstract: A pulley for use with an endless metal belt, including pulley halves rotatable about an axis. The pulley halves include truncated conical portions symmetrically opposed to each other and outer surfaces disposed on the truncated conical portions so as to be engageable with the belt. The outer surface of each pulley half has a centerline average roughness (Ra) of 0.1 to 0.5 &mgr;m, a Vickers hardness (Hv) of not less than 850 at a load of 200 g, and a microstructure with random fine irregularities in which a great number of recesses and projections are randomly located. A continuously variable transmission including the pulley is also disclosed.Type: GrantFiled: October 29, 1999Date of Patent: July 3, 2001Assignee: Nissan Motor Co., Ltd.Inventors: Nobutaka Chiba, Makoto Yoshida, Toshikazu Nanbu
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Patent number: 6099427Abstract: A self-cleaning pulley device includes a cylindrical member including a body portion having an outer surface; a series of spaced apart recesses formed from the outer surface into the body portion, each recess of the series of recesses having a root portion, and the series of recesses defining a series of spaced apart ridges projecting above root portions for engaging corresponding recesses of a belt mounted on the body portion for movement over the cylindrical member. Importantly, the self-cleaning pulley device includes a series of dirt apertures formed at least one within each root portion of each recess for collecting any dirt particles and contamination entering into an area between the body portion of the cylindrical member and a belt mounted thereon, thereby self-cleaning the pulley device, eliminating noise and preventing functional inefficiencies in a belt and pulley assembly using the pulley device.Type: GrantFiled: December 9, 1998Date of Patent: August 8, 2000Assignee: Xerox CorporationInventor: George B. Brown
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Patent number: 5490814Abstract: A sheave structure adapted to prevent the build-up of soil and other foreign materials in the v-grooves of sheaves utilized with ground engaging implements such as rotary tillers is provided. The sheave is constructed of mating halves, which when joined form a sheave with a v-groove that includes circumferentially spaced apart openings in the v-groove apex, below the belt contact area of the flanges. The openings are provided adjacent to, but below the belt contact area so that the belt pushes against any materials that collect in the v-groove. In this way, the belt serves to break apart the materials and push them through the openings. With this structure, accumulations of materials in the sheave are minimized, belt contact with the sheave flanges is improved and power transmission is enhanced.Type: GrantFiled: April 26, 1995Date of Patent: February 13, 1996Assignee: Deere & CompanyInventor: Donald R. Whitenight
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Patent number: 5449063Abstract: In one embodiment, the invention comprises at least one and preferably a plurality, of rollers provided with recesses which are mounted on the drive and trailing assemblies of a conveyor system. The recesses of each roller include abutment surfaces angularly disposed relative to the central axes of their respective drive or trailing assemblies and are sized to receive, support and align the belt. Alternative embodiments employing polygonal rollers, rollers with a single wall forming two angled abutment surfaces and rollers with support surfaces disposed to receive multiple belt segments are also provided. The rollers, in addition, may include sets of the recesses distributed in circumferential rows about their periphery, including an odd number of sets of recesses to reduce wear on the roller. A method for estimating the optimum size and configuration of the rollers of the invention for helical woven wire endless belts is also provided.Type: GrantFiled: July 28, 1993Date of Patent: September 12, 1995Assignee: Lindberg CorporationInventor: James A. Thomas, Sr.
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Patent number: 5282532Abstract: In one embodiment, the invention comprises at least one, and preferably a plurality, of rollers provided with recesses in their peripheral surfaces and mounted on the drive and trailing assemblies of a conveyor system. At least one side wall of each recess is angularly disposed relative to the central axes of the respective drive or trailing assemblies and the recesses are sized to receive therein a portion of the belt contacting the rollers. The bottom and side walls of the recesses act against the engaged portion of the belt to propel the belt through the system, support the belt and maintain the belt in proper tracking alignment. Alternative embodiments employing polygonal rollers, alternately slotted rollers and rollers with "single sided" recesses are also provided.Type: GrantFiled: June 19, 1991Date of Patent: February 1, 1994Assignee: Lindberg CorporationInventor: James A. Thomas, Sr.
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Patent number: 5256113Abstract: An arm assembly for an automotive engine accessory drive belt tensioner has a wound spring which is permanently captured upon the arm by a retainer which is effective not only prior to installation of the arm upon an engine, but also after the installation and removal of the arm from an engine.Type: GrantFiled: April 29, 1992Date of Patent: October 26, 1993Assignee: Ford Motor CompanyInventors: Thomas S. Bushman, Thomas R. Lahvic, Richard J. Meckstroth, Robert G. Rebandt, II, Timothy T. Vaughn
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Patent number: 5178221Abstract: An apparatus which gathers earthen cores dug out by a boring machine operates with a main conveyor belt and auxiliary conveyor belt which are partially forced in contact with each other so as to sandwich earthen cores inbetween and transfer the cords to a collecting box. The main conveyor belt is driven by a single drive roller that has axially inclined projecting strips on the end portions so as to prevent the main conveyor belt from shifting in position.Type: GrantFiled: April 11, 1991Date of Patent: January 12, 1993Assignees: Seirei Kogyo Inc., Kawahara Yanmar Inc.Inventors: Yoshinobu Hamawaki, Hirofumi Kawahara
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Patent number: 5160020Abstract: In one embodiment, the invention comprises at least one roller with a plurality of recesses in its peripheral surface, mounted on the drive and trailing assemblies of a conveyor system. The recesses of each roller are angularly disposed relative to the central axes of their respective drive or trailing assemblies and are sized to receive a portion of an endless conveyor belt contacting the rollers. The bottom and size walls of the recesses act against the engaged portion of the belt to propel the belt through the system, support the belt and maintain the belt in proper tracking alignment. The recesses are preferably distributed in circumferential rows about the periphery of the roller and, in multi-row rollers, in a parallel relation across the width of the roller. A method for estimating the optimum size and configuration of the rollers of the invention for helical woven wire endless belts is also provided.Type: GrantFiled: November 9, 1990Date of Patent: November 3, 1992Assignee: Lindberg CorporationInventor: James A. Thomas, Sr.
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Patent number: 5011461Abstract: Transmission provided with a driving belt and V-shaped pulleys. The side faces of the transverse elements or the contacting surfaces of pulleys in a variable transmission are provided with enlarged straight or oblique grooves between ridges in order to improve the efficiency and to reduce the wear of the transmission.Type: GrantFiled: January 9, 1990Date of Patent: April 30, 1991Assignee: Van Doorne's Transmissie B.V.Inventor: Theodorus M. J. Brouwers
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Patent number: 4986795Abstract: A flat belt drive is trained around spaced apart drive and idler rollers. The belt has an outer load bearing surface and an inner surface wetted to reduce friction on the inner surface where the load is applied. Drainage channels or grooves in the exterior surface of the drive and idler rollers function to remove liquid from between the rollers and the inner surface of the belt in order to maintain a high frictional coefficient therebetween. Alternatively, drainage openings are provided in the roller to convey the liquid away from the roller surface to the hollow interior thereof.Type: GrantFiled: May 31, 1990Date of Patent: January 22, 1991Assignee: Carl Schenck AGInventor: Karlheinz Storck
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Patent number: 4947533Abstract: A method for manufacturing a disk for a belt-driven continuously-variable-speed drive of the type which includes a metal belt disposed in engagement between mutually facing sheave surfaces which form a V-groove, including the steps of machining each sheave surface with a numerical control lathe to form therein a spiral groove that is centered about the center of the pulley and has a surface roughness within the range of 0.8-0.4 microns, and thereafter super finishing the sheave surfaces to produce residual stress therein.Type: GrantFiled: May 12, 1989Date of Patent: August 14, 1990Assignee: Suzuki Jidosha Kogyo Kabushiki KaishaInventors: Katuhiko Taniguchi, Akiharu Nakajima, Osamu Kondo
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Patent number: 4944714Abstract: A flat belt drive is trained around spaced apart drive and idler rollers. The belt has an outer load bearing surface and an inner surface wetted to reduce friction on the inner surface where the load is applied. Drainage channels or grooves in the exterior surface of the drive and idler rollers function to remove liquid from between the rollers and the inner surface of the belt in order to maintain a high frictional coefficient therebetween. Alternatively, drainage openings are provided in the roller to convey the liquid away from the roller surface to the hollow interior thereof.Type: GrantFiled: March 29, 1989Date of Patent: July 31, 1990Assignee: Carl Schenck AGInventor: Karlheinz Storck
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Patent number: 4821871Abstract: A flexible rubber strip or sheet is described which is useful as surfacing material on an idler pulley or the like. The rubber strip includes a row of openings along each end. A pair of spaced-apart metal strips is secured to each end of the rubber strip. A portion of each metal strip is exposed in the openings to enable it to be welded to the surface of a pulley to secure the rubber strip to the pulley to thereby provide a wear surface.Type: GrantFiled: January 13, 1988Date of Patent: April 18, 1989Inventor: Harold L. Herren
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Patent number: 4629444Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The pulley has a plurality of vanes extending outwardly from at least one of the opposed sides thereof, the vanes comprising a plurality of spaced apart curved vanes of substantially the same size and shape and disposed in a plurality of circular arrays that are generally concentrically disposed relative to each other about the axis and on the one side of the pulley for acting on fluid adjacent the pulley to tend to cool the pulley with the fluid. The curved vanes in each circular array are each disposed substantially evenly between an adjacent pair of curved vanes in the circular array adjacent thereto whereby the number of the curved vanes in each circular array is the same, each curved vane having a convex side and a concave side.Type: GrantFiled: September 20, 1985Date of Patent: December 16, 1986Assignee: Dayco CorporationInventor: Joseph P. Miranti, Jr.
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Patent number: 4618334Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The pulley has at least one passage provided with an inlet adjacent the hub and an outlet adjacent the peripheral groove whereby fluid passing through the passage from the inlet to the outlet thereof will tend to cool the pulley and/or the belt as the pulley rotates about the axis of the hub. A rotatably operable fluid flow forcing unit is carried by the pulley so as to be rotated and thereby operated in unison with the pulley and is disposed upstream from the inlet for forcing fluid into the inlet and thus through the passage as the pulley and the fluid flow forcing unit rotate about the axis of the hub.Type: GrantFiled: July 22, 1985Date of Patent: October 21, 1986Assignee: Dayco CorporationInventor: Joseph P. Miranti, Jr.
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Patent number: 4601685Abstract: An endless conveyer or drive belt reaches with a portion of its cross-sectional configuration facing toward respective guide or drive rollers, into corresponding ring grooves in the rollers. The projecting portion includes an endless helical spring partially embedded in the drive belt. The ends of the helical spring are connected to each other. The spring keeps the belt trained on the rollers.Type: GrantFiled: June 19, 1985Date of Patent: July 22, 1986Assignee: Rubber- en Kunststoffabriek ENBI B. V.Inventor: Johannes C. Delhaes
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Patent number: 4592463Abstract: A conveyor belt roller having a pair of opposed double tracks or threads formed on the surface thereof. Each pair of tracks spirals around the roller a plurality of times to provide a respective double helix pattern track running left and right from the midpoint of said roller. Each respective double helix pattern track commences upon the roller surface at starting points positioned 180.degree. apart about the circumference of the roller, and extends to the respective ends of the roller. The roller also is provided with interchangeable bearing and shaft housings for mounting at the respective ends of the roller to maintain the same in desired disposition during operation of the conveyor belt associated with the roller.Type: GrantFiled: July 5, 1984Date of Patent: June 3, 1986Inventor: Halil Puskar
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Patent number: 4555239Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The pulley has a plurality of vanes extending outwardly from at least one of the opposed sides thereof, the vanes comprising a plurality of spaced apart curved vanes of substantially the same size and shape and disposed in a plurality of circular arrays that are generally concentrically disposed relative to each other about the axis and on the one side of the pulley for acting on fluid adjacent the pulley to tend to cool the pulley with the fluid. The curved vanes in each circular array are each disposed substantially evenly between an adjacent pair of curved vanes in the circular array adjacent thereto whereby the number of the curved vanes in each circular array is the same, each curved vane having a convex side and a concave side.Type: GrantFiled: June 1, 1982Date of Patent: November 26, 1985Assignee: Dayco CorporationInventor: Joseph P. Miranti, Jr.
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Patent number: 4545778Abstract: A cog-belt-driven power transmission device comprising a belt pulley having a cogging on the outer periphery and a belt having a corresponding cogging on the inner surface. In order to suppress the noise produced during rotation of the belt pulley one or more discharge channels for air entrapped between the coggings are made in the cogging of the belt pulley and/or the belt, said discharge channels connecting the cog gaps to the atmosphere.Type: GrantFiled: February 17, 1983Date of Patent: October 8, 1985Assignee: Oy Tampella ABInventor: Jorma Koivula
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Patent number: 4530680Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The pulley has at least one passage provided with an inlet adjacent the hub and an outlet adjacent the peripheral groove whereby fluid passing through the passage from the inlet to the outlet thereof will tend to cool the pulley and/or the belt as the pulley rotates about the axis of the hub. A rotatably operable fluid flow forcing unit is carried by the pulley so as to be rotated and thereby operated in unison with the pulley and is disposed upstream from the inlet for forcing fluid into the inlet and thus through the passage as the pulley and the fluid flow forcing unit rotate about the axis of the hub.Type: GrantFiled: June 1, 1982Date of Patent: July 23, 1985Assignee: Dayco CorporationInventor: Joseph P. Miranti, Jr.
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Patent number: 4509933Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The groove of the pulley defines an annular bottom surface of the groove and a pair of spaced apart angled inside surfaces of the groove that join with the bottom surface and diverge away from each other as the angled surfaces extend away from the bottom surface. The angled surfaces are adapted to be engaged by opposed angled sides of the belt in such a manner that a bottom of the belt will be spaced from the bottom surface. The pulley has opposed outer sides.Type: GrantFiled: June 1, 1982Date of Patent: April 9, 1985Assignee: Dayco CorporationInventors: Joseph P. Miranti, Jr., James K. Brew
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Patent number: 4284409Abstract: Replaceable pulley lagging--for an initially smooth-faced, endless conveyor or elevator belt drive pulley--comprising a multiplicity of relatively narrow, transversely extending traction pads pre-formed to mate with the arcuate pulley face, and applied edge to edge in a circumferential array and number to substantially fully embrace the face of the pulley; the traction pads being secured to the face of the pulley in detachable relation whereby to permit removal and replacement of said pads when worn or damaged.Type: GrantFiled: August 27, 1979Date of Patent: August 18, 1981Assignee: RandtronInventor: David A. Van Teslaar
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Patent number: D299211Type: GrantFiled: October 22, 1985Date of Patent: January 3, 1989Assignee: Prismavision ABInventor: Stig B. Ahlgren