Rotary Bodies Patents (Class 74/434)
  • Patent number: 6274074
    Abstract: This invention discloses a process for producing a low-noise gear. It consists in producing this gear by the technique of co-injection of a hard matter which will form the outer toothing and the axial portion for engagement on the shaft associated therewith, and of a damping matter which will form the heart of the thermoplastics gear.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: August 14, 2001
    Assignee: Société Mécanique et de Plastiques Industriels
    Inventor: Jean Monié
  • Patent number: 6186710
    Abstract: In order to rotationally drive a gear material (3) when the gear material (3) is gear machined using a hob (not shown), a drive hole (34) having a circular configuration in section and extending on an axis L of the gear material (3) is formed in an end face (3e) of the gear material (3) and a shaft member (4) having a polygonal configuration is employed. The distance from an axis of this shaft body (4) to each angular portion (4a) is larger than the radius of the drive hole (34). The distance from the axis of the shaft member (4) to each side portion (4b) of the shaft member (4) is smaller than the radius of the drive hole (34). The shaft member (4) is fitted, under pressure, in the drive hole (34) and the gear member (3) is rotationally driven through this shaft member (4).
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: February 13, 2001
    Assignee: Zexel Corporation
    Inventors: Jean Michel Saniez, Makoto Nishiji
  • Patent number: 6148685
    Abstract: A unitary powder metal gear or sprocket (10) has a teeth region (16) which extends 2-5 mm below the tooth root diameter and a body region (14) radially inside of the teeth region (16). The teeth region (16) is pressed to a higher density than the body region (14) in a two chamber compaction die. The teeth region (16) is made of a sinter or induction hardening material, and the body region (14) is made of a liquid phase sintered material. Materials for the teeth (16) and body (14) regions are selected for compatibility by compacting them into a bimetallic strip (20, 22) with the teeth material (18) on one side and the body material (19) on the other side, sintering the strip (20,22) and observing the amount it bends.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: November 21, 2000
    Assignee: Zenith Sintered Products, Inc.
    Inventors: Terry M. Cadle, Joel H. Mandel, Carl J. Landgraf, Timothy E. Geiman
  • Patent number: 6095006
    Abstract: At a time of manufacturing a clutch drum formed in a cup shape, having a peripheral wall formed in a tooth profile, and having a circumferential groove for mounting a snap ring in a portion close to an open end of an inside projecting portion, in a stage of forming a peripheral wall of a base material formed in a cup shape into a predetermined tooth profile, after forming in such a manner that a minimum outer diameter of the open end portion of the inside projecting portion is larger than a maximum diameter of the circumferential groove for the snap ring, a cutting process is given to the open end portion of the inside projecting portion 3, so that the circumferential groove is formed. Accordingly, a tooth profile having an uneven amount necessary for transmitting a rotation is secured and no extending portion is produced in the open end portion of the inside projecting portion.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: August 1, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tsukasa Morita, Masanobu Hayasaka
  • Patent number: 6070484
    Abstract: A molded plastic circular gear which has removed its wall portions on the inside of a tooth root of its circumferential gear teeth portion. The gear has a circular rim formed at a distance from and on an inside of the tooth root. The gear is further formed by injection of resin through gates located in the web portion of the inside of the rim. The gear is further characterized in that the thickness in the axial direction of the web portion of the inside of the rim is made larger than that of the web portion on the outside of the rim.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: June 6, 2000
    Assignee: Enplas Corporation
    Inventor: Kazuyuki Sakamaki
  • Patent number: 6012350
    Abstract: The internal gear is a bottomed cylindrical component, which has the boss portion fitted over the outer circumferential surface of the shaft, the disk-shaped flange portion extending radially outwardly from the boss portion, and the cylindrical gear body having a tooth portion in its inner circumferential surface and connecting integrally to the outer circumferential part of the flange portion. The flange portion is virtually conical on its outer side surface and tapered from the outer diameter side toward the inner diameter side, i.e., from the gear body toward the boss portion. This construction is thicker at the boss portion side than at the gear body side. Further, the density of the flange portion is almost inversely proportional to the thickness and is lower at the boss portion side than at the gear body side. The cylindrical gear body has a density distribution such that the central part of the gear body is lower in density than the end portions in a tooth trace direction of the teeth portions.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: January 11, 2000
    Assignee: Jatco Corporation
    Inventors: Muneo Mizuta, Yasushi Yabe
  • Patent number: 6000295
    Abstract: According to the invention, when a plurality of radial ribs are formed integrally with the web of a spur gear for the sake of rigidity thereof, the same rigidity as that of heretofore known gears can be assured while increasing the size accuracy of gear in comparison with the usual gears by locating the ribs with outer ends thereof opposed to the base of corresponding teeth.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: December 14, 1999
    Assignee: Enplas Corporation
    Inventor: Genichi Kimizuka
  • Patent number: 5947852
    Abstract: A rotary polymeric torque transfer device such as a vehicle timing chain sprocket wherein the sprocket comprises a polymeric body having homogeneous teeth and torque is transferred to the body by a metal non-insert drive member which includes an inner portion defining a hub, a central portion for receiving fasteners for mounting the sprocket upon shaft support structure, and the drive member outer portion includes torque drive elements cooperating with shoulders defined on the polymeric body radially spaced from the body axis of rotation whereby the transfer of torque between the drive member and the polymeric body occurs adjacent the body periphery radially spaced from the rotation axis to increase the length of the moment arm and reduce the torque forces transmitted between the drive member and the polymeric body to prevent excessive stress and wear between these components.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: September 7, 1999
    Assignee: TMJ Properties, L.L.C.
    Inventor: Ralph D. Moretz
  • Patent number: 5913939
    Abstract: A bevel gear in which the sizing can be easily effected without degrading the quality of the gear. In a sintered or forged gear having a toothed portion (1) formed on an axial end face thereof, a notched groove (4) is formed in and across an outer circumferential surface of the gear in an axial direction. The construction of the notched groove (4) is specified so that its quality is kept.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: June 22, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Jiro Tanaka
  • Patent number: 5909789
    Abstract: A hub body for clutches, especially friction clutches in motor vehicles, with internal toothing for connection to a gear input shaft and with at least one encircling shoulder extending radially outward or with elements spaced in the circumferential direction and extending radially and axially for connection to a take-along disk of the clutch. The hardness curve in the shoulder or in the elements rises in the axial direction, relative to a constant axial plane, from a minimum value to a maximum value and declines again, and the hardness curve declines, relative to a constant radial plane, from a maximum value on the radial inside to a minimum value on the radial outside.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: June 8, 1999
    Assignee: Mannesmann Sachs AG
    Inventors: Frank Ilzig, Ernst Buberl, Achim Link
  • Patent number: 5890395
    Abstract: A cylindrical tubular substrate for an electrophotographic photoconductor is made of a conductive resin. The substrate is smoothly rotatable about its axis of rotation, securely grounded, and easily and inexpensively manufactured. It has a cylindrical tube portion and a flange portion with a gear and a shaft through-hole. These portions can be integrated as a unit of a material containing an electrically conductive resin as the main component. Alternatively, the shaft is integrated unitarily with the substrate by single-step molding. Or further, a flange, made of a resin with high sliding wear resistance and with a gear and a shaft through-hole, or a previously molded flange made of a resin with high sliding wear resistance and with a gear and a shaft insert-molded to the flange, with an electric conductor, is disposed in an assembling molding step at an end of a cylindrical tube made essentially of a conductive resin.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: April 6, 1999
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Noriaki Kawata, Kiyoshi Hikima
  • Patent number: 5884527
    Abstract: A gear wheel is formed from a pressed and sintered powder metal blank in which the metal powder comprises an admixture of iron powder and at least one alloying addition and the gear wheel is surface hardened by applying densifying pressure only to the tooth root regions or only to the tooth flank regions in order to establish densification in the range of 90 to 100 per cent of full theoretical density to a depth of at least 380 and up to about 1,000 microns.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: March 23, 1999
    Assignee: Formflo Limited
    Inventors: Christopher John Cole, Rohith Shivanath, Peter Jones
  • Patent number: 5759081
    Abstract: A round wafer-shaped gear block is provided with beveled gear teeth along a side wall of the gear block. The gear block has posts on a top surface and has a hub integrally formed on a bottom surface thereof. The hub is rotationally receivable within orifices of a support block. The gear blocks may be attached to an assemblage of support blocks in an interfacing pattern allowing a user to construct representations of both planar gear pairs and beveled gear pairs.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: June 2, 1998
    Inventor: Ronald Lee Lyman
  • Patent number: 5728024
    Abstract: A differential apparatus includes a differential casing, a pair of helical side gears and a pairs of helical pinion gears. The helical pinion gears are accommodated in bores formed in the differential casing, respectively. When it is expected that a helix angle of tooth trace of the helical pinion gear would be decreased by the vehicle's driving, one of the helical pinion gears is formed in advance so that the tooth depths are gradually decreased from axial ends of the helical pinion gear toward the axial intermediate potion. Conversely, when it is expected that a helix angle of tooth trace of the pinion gear would be increased by the vehicle's driving, one of the helical pinion gears is formed in advance so that the tooth depths are gradually increased from the axial ends of the helical pinion gear toward the axial intermediate potion.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: March 17, 1998
    Assignee: Tochigi Fuji Sangyo Kabushiki Kaisha
    Inventors: Makoto Ishizuka, Sakuo Kurihara, Yasuhiko Ishikawa, Masahiko Asahi
  • Patent number: 5711187
    Abstract: A gear wheel is formed from a pressed and sintered powder metal blank in which the metal powder comprises an admixture of iron powder and at least one alloying addition and the gear wheel is surface hardened by densifying at least the tooth root and flank regions to establish densification in the range of 90 to 100 percent of full theoretical density to a depth of at least 380 and up to about 1,000 microns.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 27, 1998
    Assignee: Formflo Ltd.
    Inventors: Christopher John Cole, Rohith Shivanath, Peter Jones
  • Patent number: 5666854
    Abstract: A support for a gear wheel, used in a toothed gear change transmission having a shaft and a gear wheel, where the support provides both sufficient axial fixing and radial play between the gear wheel and the shaft, necessary to compensate for working loads. The support is used with a gear wheel having internal teeth with at least one discontinuity in the internal teeth and a groove extending into the internal teeth. The support has a first disc with external teeth and at least one mating discontinuity in the external teeth, whereby the internal and external teeth and the discontinuities, respectively, can coincide with one another. A locking mechanism locks the position of the first disc relative to the gear wheel. To prevent against axial movement of the first disc against the direction of insertion into the groove, the support also includes a securing device.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: September 16, 1997
    Assignee: ZF Friedrichshafen AG
    Inventors: Gerhard Buri, Josef Bader
  • Patent number: 5529160
    Abstract: A clutch drum made of a metallic plate having on its peripheral wall portion spline teeth for engaging with clutch plates is formed by pressing with a die which has formed tooth grooves on its periphery and tooth-shaped punches which are disposed around the die so as to move radially back and forth. The force of pressurizing the toothed punches against the tooth flank portions of the spline teeth is made smaller at an open end thereof than at an ordinary portion of the clutch drum such that the thickness of the flank portions of the spline teeth becomes thicker at the open end than at the ordinary portion.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: June 25, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Haruo Tanaka, Toshiki Takeda, Yoichi Kojima, Yoshihiro Kodama
  • Patent number: 5419217
    Abstract: A machine element has a shaft and at least a fitting member such as a cam or gear mounted on the shaft by pressure-fit. The fitting member has a bore for receiving the shaft. The shaft is formed with protrusions at least an area of the shaft on which the fitting member is fitted. The protrusions preferably extend continuously or discretely, peripherally or helically on the outer surface of the shaft and have a diameter larger than than the remaining areas of the shaft. The bore of the fitting member is formed with at east an inner chordal surface having a perpendicular from the center of the bore smaller than the radius of the protrusions. The fitting member is configured to be forced onto the protrusions of the shaft with at least one inner chordal surface forming a corresponding outer surface on the protrusions in a shaving and/or deforming operation.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: May 30, 1995
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Koji Umezawa, Tamio Sakurai
  • Patent number: 5388474
    Abstract: A clutch drum has a drum main body made of a metallic plate which is formed into a cup shape by drawing. Spline teeth for engaging with clutch plates are formed by pressing on a periphery of the drum main body. Pulsing teeth for detecting a rotational speed are formed by pressing on the periphery of the drum main body. An apparatus for manufacturing the clutch drum has a forming die onto which the drum main body is externally set in position. The forming die has formed thereon first tooth spaces corresponding to the spline teeth and second tooth spaces corresponding to the pulsing teeth. First tooth-shaped punches are provided so as to be movable radially back forth to form by pressing the spline teeth by urging the periphery of the drum main body into the first tooth spaces.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: February 14, 1995
    Assignee: Honda Giken Kogyo Kaisha
    Inventors: Haruo Tanaka, Toshiki Takeda, Yoichi Kojima, Yoshihiro Kodama, Yorinori Kumagai
  • Patent number: 5272930
    Abstract: A mechanical element has a shaft pressure-fitted into at least one composite engaging member. The shaft has at least one engaging region disposed thereon, and at least one swollen portion formed radially outwardly around the engaging portion. The composite engaging member comprises an engaging body made of sintered alloy and having a recess therein, and a ring-shaped steel inner piece having a hardness not greater than the swollen portion. The inner piece is secured to the inside circumference of the recess of the engaging body by a securing method. The inner piece has a shaft hole formed therein, the shaft hole having a plurality of a larger inside diameter portions and a plurality of a smaller inside diameter portions arranged circumferentially, with the smaller inside diameter arranged to be smaller than the outside diameter of the swollen portion of the shaft.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: December 28, 1993
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Yoshikatsu Nakamura, Yasukichi Egami, Shunsuke Takeguchi, Ken Akimoto
  • Patent number: 5213001
    Abstract: A thermoplastic power transmission element having increased torque capacity. A power transmission element, such as a gear, pulley, sheave or sprocket, is formed of a thermoplastic material and includes a central hub arranged to surround and engage a keyed driven shaft. A metallic insert within the central hub engages the key to receive the driving forces transmitted therethrough. The metallic insert includes a plurality of mating surfaces engaging the central hub to distribute the driving forces over an area larger than the area of the keyway. Use of the metallic insert increases the torque capacity of the resulting power transmission element.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: May 25, 1993
    Assignee: UCC Corporation
    Inventors: David R. Gruettner, Robert J. Gladczak
  • Patent number: 5207112
    Abstract: Cast iron gears, such as those used as cam gears on engines and as used for fuel injection gear pumps, which have a hub and a rim that are thick in comparison to the relatively thin web used to interconnect the hub with the rim and a process by which such iron gears can be cast, especially in a vertical orientation. To eliminate porosity problems, single flow channel of substantial thickness is incorporated into the mold cavity which forms a flow rib that runs radially between the hub and rim of the gear being formed. To compensate for both the added weight of the rib that is produced on the web of the resultant gear, as well as to counterbalance the effect caused by the presence of a single rib, at least one opening is formed in the web at each side of the rib.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: May 4, 1993
    Assignee: Cummins Engine Company, Inc.
    Inventors: Roger D. Sweetland, Kevin R. Beutler
  • Patent number: 5064040
    Abstract: An oil passage connection between a shaft and a clutch drum is sealed by intentionally providing an imbalance in the forces acting on splines mounting the clutch drum to the shaft. The sides of at least some of the splines are angled, so that at least some part of any torque applied between the clutch drum and shaft is resolved into radial components. By providing a differing number of splines, or an asymmetrical positioning of the splines, the net force can be designed to force the sides of the shaft and the clutch drum adjacent to the oil passage tightly together. This is most easily accomplished by simply omitting one or more splines from the clutch drum on either side of the oil passage. With such a structure, the same splines on the shaft can be used to mount gears and the like, which normally require symmetrical distribution of forces.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: November 12, 1991
    Assignee: Deere & Company
    Inventor: Douglas R. Johnson
  • Patent number: 5012691
    Abstract: This cluster of moulded gears with the helical teeth, comprising a group of coaxial pinions of which the teeth have the same helical sense and the same pitch, is characterized in that, Mrn and Mri designating the real moduli of any pinions respectively of rank n and of rank i of the group, Zn and Zi designating the numbers of teeth of the said pinions, and .beta.n and .beta.i designating their helical angles, the following relationship exists between these different parameters:sin .beta.n=sin .beta.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: May 7, 1991
    Assignee: ECIA - Equipements Et Composants Pour L'Industrie Automobile
    Inventor: Maurice M. Bertot
  • Patent number: 4991993
    Abstract: Gears with a soft metal hub and a hexagonal coaxial hole in the hub, often need repair. Accordingly the old hub is removed and a new solid plug is pressed in place and welded. A radial face on the plug and the gear are flush. A lock plate is placed on this radial face and wleded along an arc. Then the assembly has an axial circular hole bored therethrough and then a hexagonal hole is broached therein. The lock plate has two ears opposite the weld which receive a bolt.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: February 12, 1991
    Assignees: Larry D. Watlington, Nathan T. Haynes
    Inventors: Larry D. Watlington, Nathan T. Haynes
  • Patent number: 4961353
    Abstract: Disclosed herein is a gear structure which comprises a sectoral base member of metal plate; and an arcuate flange portion integrally formed on an arcuate flange portion integrally formed on an arcuate peripheral portion of the sectoral base member. The arcuate flange portion is formed on an outer surface of thereof with forged teeth.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: October 9, 1990
    Assignee: Ikeda Bussan Co., Ltd.
    Inventors: Masahiro Okada, Hiroki Matsumoto
  • Patent number: 4895038
    Abstract: The planet wheel has either toothings having different diameters but a same tooth module or toothings of a same diameter but different tooth modules. The toothings are produced by die stamping of a disc down to a certain depth which provides, in the median plane of the disc, a central cheek against which bear the toothings thereby stiffening each tooth for preventing it from being crushed and deformed.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: January 23, 1990
    Assignee: A. & M. Cousin Etablissements Cousin Freres
    Inventors: Yves Pipon, Georges Droulon
  • Patent number: 4785434
    Abstract: Synthetic resin shaft and gear portions are molded to be capable of slipping each other. During a normal timepiece operation, the shaft and gear portions are integrally rotated. During a hand setting operation, the shaft portion is rotated with slip on the gear portion. In this slip structure of a timepiece, at least one of the shaft and gear portions is formed of an oil-containing resin material.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: November 15, 1988
    Assignee: Casio Computer Co., Ltd.
    Inventors: Masaru Shoji, Wataru Yamada, Masayoshi Tanazawa, Mitsunobu Yatabe, Kenichi Nakamura, Satoshi Fujio, Masaki Yokohama, Takashi Watanabe, Kanenori Ochiai
  • Patent number: 4779476
    Abstract: A power transmission member (42), as well as apparatus (10,110,210) and method for forming the power transmission member (42) from a thin-walled blank. The apparatus (10,110,210) comprises a pair of opposed toothed dies (26,30;112,114;138,140). A toothed mandrel (40) is rotatably supported between the dies and received within the sleeve portion (46), flatly engaging an annular end wall (44) of the member. The dies (26,30;112,114;138,140) and mandrel (40) have chamfered surfaces (68,70), respectively, for forming a chamfered flange (66) on the power transmission member (42) as the toothed surfaces of the dies are relatively moved during the splining operation. A loading notch (122) is formed intermediately along the toothed work surfaces of each die member (112,114;138,140) for receiving a blank to be splined when the notches (122) are vertically aligned with one another in a neutral or loading position on opposite sides of the mandrel.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: October 25, 1988
    Assignee: Anderson-Cook, Inc.
    Inventors: Carl E. Anderson, James T. Killop
  • Patent number: 4760752
    Abstract: A part, providing its own plastic deformation method and an exemplary embodiment, a polycarbonate spur gear, is disclosed. In a part having at least one region adapted to be deformed due to press-fit forces acting upon said region deformation is decoupled from proximate critical surfaces by providing at least one aperture in said part in a second region which is spaced from said first region in the general direction of the resultant vector of said forces such that said deformation is relieved by said aperture.In its basic aspects, an exemplary embodiment of the present invention, a plastic spur gear which remains rotationally concentric by embodying the inventive concept is described.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: August 2, 1988
    Assignee: Hewlett-Packard Company
    Inventors: Paul J. Wield, Curt N. Torgerson
  • Patent number: 4715243
    Abstract: A planetary reduction gear has an internally-toothed ring gear which is made of a molded synthetic resin. The ring gear has a rim formed in its outer periphery in which is formed a plurality of seats comprising through seats and non-piercing holes, the seats being provided at equal intervals around the periphery of the rim. The non-piercing seats extend only part way through the thickness of the rim. The provision of seats over the entire periphery of the rim causes sink marks which develop at the time of molding of the ring gear to act uniformly and deformation of the ring gear is prevented.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: December 29, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Morishita, Kyoithi Okamoto, Toshihiko Gotoh, Yukio Kako, Takemi Arima
  • Patent number: 4696200
    Abstract: A composite gearwheel structure for reciprocating the gripper-carrying straps in weaving looms, comprises a gearwheel body of synthetic plastic material. Its teeth are partially covered with sheet metal associated with the body and forming an integral part thereof.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: September 29, 1987
    Assignee: Vamatex S.p.A.
    Inventor: Luigi Pezzoli
  • Patent number: 4686863
    Abstract: A rotary actuator comprising a first rotor rotatable around a first axis and an axial end surface with a plurality of circumferentially spaced and axially projecting first projections, attending therefrom a second rotor rotatable around a second axis which is not coincident with the first axis, the second rotor having an axial end surface with a plurality of circumferentially spaced and axially projecting second projections extending therefrom, and a rotating mechanism being connected to the second rotor to rotate it around the second axis. The second projections project in a direction opposite to that of the first projections to cooperate therewith such that either one of the second projections engages with either one of the first projections to rotate the first rotor through a predetermined angle.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: August 18, 1987
    Assignees: Tokico Ltd., Jidosha Denki Kogyo Kabushiki Kaisha
    Inventors: Masaru Inoue, Masao Ida, Takao Kohara
  • Patent number: 4635501
    Abstract: Gear made of magnetic material is attached with permanent magnet on the web thereof for damping vibration and noise caused when gears are in operation.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: January 13, 1987
    Assignee: Bridgestone Corporation
    Inventors: Keiichiro Mizuno, Kazuyoshi Iida, Kazutomo Murakami
  • Patent number: 4603597
    Abstract: A drive system in which a driven member is mounted on a shaft member to rotate in unison therewith. The driven member has a protrusion extending outwardly from one surface thereof. A retaining ring having an open end is mounted on the shaft member. The open end of the retaining ring meshes with the protrusion extending outwardly from the driven member so as to rotate in unison therewith.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: August 5, 1986
    Assignee: Xerox Corporation
    Inventor: Frank V. Onorati
  • Patent number: 4589860
    Abstract: Gear for chain drives comprising a gear body of cast material having a hub section, a gear rim section with spur teeth, and a web section joining said hub and gear rim sections, and a ring plate of metal embedded in the web section, the outer edge of said plate being near the bottom of the areas between the spur teeth and having axial openings filled with casting material around its periphery, said ring plate having at its outer radial edge, radially outwardly directed projections, which are located in each case in a tooth, and which are embedded in the casting material of the gear body, said projections extending beyond the bottom of the spaces between adjacent spur teeth, and an axial opening formed in the ring plate adjacent each projection and radially below it.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: May 20, 1986
    Assignee: SKF Kugellagerfabriken GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Gerhard Herrmann, Herbert Dobhan, Rudiger Hans
  • Patent number: 4522080
    Abstract: A wheel assembly includes a cam and a cam gear mounted on a camshaft of an internal combustion engine. The cam gear is constructed of a laminated stack of flat plate members which are disposed in abutting relationship to one another to form a plurality of axially spaced and radially extending interfaces. The cam gear is press fit onto the camshaft and the frictional forces between the gear and the camshaft provide the substantially sole force for maintaining the interfaces between the plate members in abutting relationship at their radially outer ends to form integral tooth members. The cam is also constructed of a laminated stack of flat plate members and press fit onto the camshaft in substantially the same manner as the gear to form an integral cam surface. The plates which form the cam are stamped from the plates that form the gear. A method of forming the wheel assembly is also disclosed.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: June 11, 1985
    Assignee: Briggs & Stratton Corp.
    Inventor: John D. Santi
  • Patent number: 4508495
    Abstract: A rotary shaft for compressor includes a cylindrical shaft body and a cylindrical eccentric member. The shaft body is rotatably arranged in an outer box of the compressor and is connected to an electric motor at one end portion thereof. The eccentric member has a through hole extending along the axis thereof and formed eccentric thereto, and also has a groove extending from the upper end face to the lower end face thereof to form a passage for lubrication oil. The groove is provided with a bottom face adjacent to the shaft body. The shaft body is inserted into the through hole. The eccentric member is secured to the other end portion of the shaft body by laser-welding the bottom of the groove to the shaft body. An annular eccentric roller is rotatably fitted onto the eccentric member.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: April 2, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tsuneo Monden, Masao Ozu, Satoshi Ikegami
  • Patent number: 4472164
    Abstract: A sprocket wheel for a tracked vehicle, the sprocket wheel being in the form of an annular body having teeth integrally moulded of elastomeric material, the teeth including metal inserts moulded therein and providing track engaging surfaces in the inter-tooth valleys about the sprocket wheel.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: September 18, 1984
    Assignee: Canadian Foremost, Ltd.
    Inventors: Allen A. Pusch, Russ J. Ewert
  • Patent number: 4357695
    Abstract: A pinion of a reduction gear intended for use in electronic timepieces having a stepping motor, particularly wrist watches, takes the form of a cylindrical body having an axial blind hole and two teeth milled at one end of the body. The flancs of the teeth are plane parallel surfaces. The distance between the axis of rotation of the pinion and the axis of rotation of a toothed wheel of the reduction gear is slightly less than the radius of the tip-circle of the wheel, so that the two teeth of the pinion block the wheel during the resting period of the motor. If a wheel with 60 teeth is used, it may constitute the fourth wheel in an electronic watch having hands.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: November 2, 1982
    Assignee: Ebauches Bettlach, S.A.
    Inventor: Peter Bachmann
  • Patent number: 4327597
    Abstract: Multiple slotted drive disks are secured in parallel relationship to a drive shaft. The slots are radially arranged and the slots of each disk are aligned. Movable rods are received in the slots. A slotted driven disk is secured to a driven shaft, which driven shaft is parallel to the drive shaft. The drive and driven disks are arranged in parallel intersecting relationship such that the rods will be received in the slots of the driven disk through a portion of the revolution. Relative movement is effected between the shafts via the rods. The relationship of angular velocity between the shafts is kept constant and an infinite torque converter is provided.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: May 4, 1982
    Inventor: Jose M. Soto
  • Patent number: 4181846
    Abstract: A rotary heating apparatus utilizing induction heating can be constructed so as to utilize a rotary drum at least the periphery of which is formed of material capable of being heated by magnetic induction. An induction heating coil is located sufficiently close to at least part of the periphery of the drum so as to cause heating of at least part of the periphery of the drum as the apparatus is operated. The drum is rotatably mounted and a motor is provided for rotating the drum. During the operation of the apparatus heat will be distributed within the interior of the drum as a result of radiation and conduction from the drum and also as the result of the movement of the contents including air and any other material present within the interior of the drum as a result of rotation of the drum.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: January 1, 1980
    Inventor: Ronald J. Cunningham
  • Patent number: 4171649
    Abstract: A variable speed and direction power transmission attachment for driving the cutting tool carriage of a lathe or the like, the attachment having sets of intermeshing male and female cog gears. Certain of such sets each comprises a face gear having a plurality of concentric rows of tooth socket elements formed therein. A male cog gear is selectively settable to mesh with any of such rows to change the gear ratio. By changing the combined setting of different sets of gears, a wide variation in overall gear ratio may be obtained to provide many different feeding speeds of the carriage, suitable for general cutting and for screw thread cutting. A reversing mechanism, also constructed of intermeshing cog gears, enables the direction of drive to be reversed or the drive to be disconnected to permit manual drive of the carriage.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: October 23, 1979
    Inventor: Carlester Lindsay
  • Patent number: 4134308
    Abstract: A driven mechanism for a rotatory heat regenerator, in which a shock absorbing member is fitted around the outer peripheral surface of a discoidal rotatory regenerator having a honeycomb structure. A metal ring having teeth is set around the outer periphery of the shock absorbing member and held in position thereby. The ring is driven by at least one driving gear connected with a prime mover and transfers torque to the rotatory regenerator. Torque fluctuations on the driving gear are moderated by the elastic deformation of the ring and the shock absorbing member. Any difference in the amount of thermal expansion between the ring and the regenerator is compensated by the shock absorbing member.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: January 16, 1979
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Okano, Wataru Akai
  • Patent number: 4078445
    Abstract: An improved chain drive sprocket or the like in the form of a sprocket member. The composite sprocket member includes a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of the hub portion, and a toothed ring formed of synthetic resin material having an aperture formed therein with T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for close sliding coaxial engagement with the corresponding lands and grooves of the hub portion. The hub portion is preferably formed of sintered steel powder impregnated with cupreous alloy. The toothed ring portion is preferably formed of nylon. The drive sprocket may be employed in combination with the power output shaft from a motorcycle power transmission. The composite member may be slightly modified to form a composite spur gear or the like.
    Type: Grant
    Filed: January 5, 1977
    Date of Patent: March 14, 1978
    Inventor: Cecil M. Kiser, Jr.
  • Patent number: 4059024
    Abstract: A gear train includes a plurality of gears mounted for cooperation. Two of the gears are provided with at least one projection from the side of the gear in a direction generally parallel to the axis thereof. In operation the projections on the gears interfere at a predetermined angular position to limit movement of the gear train.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: November 22, 1977
    Assignee: North American Philips Corporation
    Inventors: Elmer W. Madsen, George B. Soden
  • Patent number: 4030377
    Abstract: A rotary drive assembly wherein a shaft is retained within a pinion against axial displacement therefrom by a projection on the shaft received in an annular recess in the pinion. The projection is forcibly urged axially from one end of the pinion bore therethrough into alignment with the recess whereupon the enlargement effectively locks the shaft to the pinion. Bearing portions may be provided on the shaft to be disposed outwardly of the opposite sides of the pinion for journaling the assembled shaft and pinion in suitable bearings. One bearing portion may be larger than the pinion bore so as to limit the relative movement therebetween. The bearing adapted to journal the larger bearing portion of the shaft is arranged to pass the shaft enlargement freely therethrough during assembly of the shaft to the pinion.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: June 21, 1977
    Assignee: Caterpillar Tractor Co.
    Inventor: Frank E. Keske
  • Patent number: 3977267
    Abstract: A powdered metal gear is disclosed for use in an accommodating screw jack. The gear has a planar face, and teeth of generally truncated tetrahedronal shape are disposed around the circumference. A conical gear undersurface acts, with intertooth recesses, to form a first gear portion of substantially uniform material thickness. Scallop indentations in the undersurface mate with the gear teeth themselves to form a second gear portion of substantially uniform material thickness.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: August 31, 1976
    Assignee: Auto Specialties Manufacturing Company
    Inventor: Richard S. Graafsma