Class / Patent application number | Description | Number of patent applications / Date published |
074457000 | Teeth | 78 |
20080196530 | POWER TRANSMISSION DEVICE - A power transmission device is provided with: a first gear having a plurality of teeth that share an identical tooth profile; an intermediate gear that is engaged with the first gear; and a second gear that is engaged with the intermediate gear, and has a plurality of teeth that share an identical tooth profile, wherein the first gear and the second gear have an identical number of teeth, an identical reference diameter, and an identical reference pitch; and the tooth profile of the first gear is different from that of the second gear | 08-21-2008 |
20080276741 | GEAR, AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - A gear is made of resin and includes: a support cylindrical portion; a teeth-formed cylindrical portion arranged coaxially with the support cylindrical portion on a radially outer side of the support cylindrical portion and formed with a plurality of teeth in its outer periphery; and a web connecting an outer peripheral surface of the support cylindrical portion and an inner circumferential surface of the teeth-formed cylindrical portion, and an axial thickness of at least a part of the web becomes thinner gradually from the outer peripheral surface of the support cylindrical portion to the inner circumferential surface of the teeth-formed cylindrical portion. | 11-13-2008 |
20080302198 | Resin gear - In a resin gear formed such that a first teeth section formed into a spiral and a second teeth section formed into a spiral having an opposite twist direction from the first teeth section are joined at a tooth width direction center section, reductions in quietness and smoothness caused by a decrease in contact ratio can be suppressed. | 12-11-2008 |
20080307915 | TOOTHED MOBILE PART FOR PLAY TAKE-UP IN A GEAR, PARTICULARLY IN HOROLOGY - A toothed mobile part ( | 12-18-2008 |
20090007711 | Injection-molded resin face gear - An injection-molded resin face gear that can suppress deterioration of gear accuracy caused by shrinkage of resin material after injection molding and allow accurate and smooth rotation transmission is provided. | 01-08-2009 |
20090188337 | Kinetic Energy Generation Apparatus Having Increased Power Output - A kinetic energy generation apparatus having increased power energy comprises a cashing, a fixed gear, and a free gear, disposed on the inner side of the fixed gear and has a gear ratio equal to 3:1. The apparatus also comprises a transmission portion, with a bush disposed between the transmission portion and the cashing, driven to rotate by the free gear and has an axis of output extended. The apparatus also comprises a connecting rod having one end pivoted on a piston of a cylinder. | 07-30-2009 |
20090314115 | Involute gear teeth for fluid metering device - An oval gear set for use in a flow meter comprises first and second gears that are identical to each other and that are configured to engage at a fixed center-to-center distance such that the first and second gears mesh at all angular positions. Each gear of the oval gear set comprises a hub and a plurality of gear teeth. The hub comprises an oval body having a major axis and a minor axis extending through a center of the hub, and a root profile wall circumscribing the major and minor axes. The plurality of gear teeth extend from the root profile wall. Each of the gear teeth has a pair of contact surfaces with circular involute curve profiles. | 12-24-2009 |
20090320632 | MARKING SCHEME FOR A GEAR MESHING ARRANGEMENT TO ENSURE PROPER ASSEMBLY THEREOF - A gear meshing system is disclosed. The gear meshing system includes a pair of gears engaged with each other through a first plurality and a second plurality of teeth thereon. Each gear has a mark which is oriented in a predetermined relationship with a timing slot on the gear. Each gear of the pair of gears is identical to the other. Accordingly, by utilizing a marking scheme in accordance with the present invention the same gear part can be used with multiple shafts and thereby assure accurate meshing/timing upon assembly. Accordingly, the need for additional part numbers will be minimized and excessive part proliferation will be avoided. | 12-31-2009 |
20100000356 | Gear and Gear Drive Unit - Provided are a gear and a gear drive unit which allow oil film formation to a sufficient degree between tooth surfaces of gears rotating at high-speed and which help to prevent generation of pitting, abrasion, and prevent scoring, temperature rise, and wear to thereby achieve an improvement in terms of durability. A tooth surface is provided with a multitude of minute recesses arranged at random, in which an axial surface roughness parameter Ryni of the surface thus provided with the recesses is set to a range: 0.8 μm≦Ryni≦2.3 μm. As a result, the tooth surface is endowed with a high oil film formation performance, and it is possible to attain a long service life even under a low-viscosity/thin-lubrication condition in which the oil film is extremely thin. | 01-07-2010 |
20100031764 | Composite Body - A composite body, such as a gear wheel or torsional vibration damper, including a radially inner hub body provided with outer profiles, a surrounding outer body provided with inner profiles, and an intermediate layer of synthetic resin material which connects the outer profiles of the hub body with the inner profiles of the outer body; the hub body being with an inner contour adapted to mount the composite body on a shaft. | 02-11-2010 |
20100071495 | GEAR AND GEAR DRIVE UNIT - Provided are a gear in which oil film formation between the tooth surfaces of gears rotating at high speed can be effected to a sufficient degree, in which generation of pitting, abrasion, and scoring is prevented, and which helps to prevent an increase in temperature and wear to achieve an improvement in durability, and a gear drive unit. A multitude of minute concave recesses are provided at random on a tooth surface, and an average area of the recesses is set to a range of 160 to 740 μm | 03-25-2010 |
20100132496 | Gear - A gear is provided having a tooth form shape in which stress concentration on a tooth root side including a bottom does not easily occur and strength of the tooth can be enhanced. | 06-03-2010 |
20100269617 | METHOD OF PRODUCING A POLYMER COATING - The invention relates to a method of producing an abradable polymer coating ( | 10-28-2010 |
20100300229 | Gear - The invention aims to improve not only the resistance to abrasion and scoring, but also the fatigue strength against pitting and chipping, without increasing the number of steps of the manufacturing process. | 12-02-2010 |
20110017006 | PEEN FINISHING - The present invention is directed to a method and apparatus for processing a metallic gear comprising providing a gear, directing a first peening media at the metallic gear thereby exposing a plurality of surfaces on the metallic gear to the first peening media whereby the strength and wear properties of the teeth roots of the gear are enhanced, directing a second peening media at the metallic gear thereby exposing a plurality of surfaces on the metallic gear to the second peening media whereby the KSI of the surface of the gear is enhanced, providing a container, placing a fine finishing medium in the container, placing the gear with the fine finishing medium in the container, coupling vibrations to the container to vibrate the fine finishing medium with the wetted gear, removing the gear from the container, washing the gear and rinsing the gear with rust inhibitor. | 01-27-2011 |
20110138951 | WIND TURBINE WITH GEAR INDICATING WEAR - A wind turbine is provided having a tower, a nacelle supported by the tower and a rotor with one or more blades and a hub. A gearbox is connected to the rotor and includes one or more gears having a wear indicating line that facilitates identification of gear wear. The wear indicating lines are located on side surfaces of the one or more gears. | 06-16-2011 |
20110226077 | APPARATUS INCLUDING A GEAR TOOTH SEQUENCE FOR USE IN A VARIABLE TRANSMISSION - Apparatus for use in a variable ratio transmission has gear teeth ( | 09-22-2011 |
20130008278 | SINTERED GEARWHEEL - A sintered gearwheel is described having teeth ( | 01-10-2013 |
20130118283 | ASYMMETRIC TOOTHING - The invention relates to a toothing, in particular between a starting pinion ( | 05-16-2013 |
20140033848 | COMPLEX MICROMECHANICAL PART - The invention relates to a micromechanical part ( | 02-06-2014 |
20140366668 | Gear - A half of a tooth right-angled cross-sectional shape in a tooth bottom side area of a tooth divided at a tooth bottom center as a boundary is defined by a first involute portion extending from the tooth bottom center P | 12-18-2014 |
20150298721 | RACK SHAFT AND METHOD FOR MANUFACTURING RACK SHAFT - A rack shaft used for a dual-pinion electric power steering apparatus includes: a hollow first shaft in which a first rack for transmission of manual steering force is formed; and a solid second shaft in which a second rack for transmission of steering assist force is formed and which is coupled to the first shaft. A method for manufacturing a rack shaft includes: forming a first rack in a hollow first shaft by plastic working; coupling a solid second shaft to the first shaft after the plastic working; and forming a second rack in the second shaft by cutting after the coupling. | 10-22-2015 |
20150323053 | STRUCTURED MATERIAL ALLOY COMPONENT FABRICATION - A novel manufacturing method for functionally graded component includes a cold sprayed additive manufactured core material and a cold sprayed additive manufactured set of teeth around said core made from another material. | 11-12-2015 |
20160010739 | TOOTHING OF A GEARWHEEL | 01-14-2016 |
20160040770 | INTEGRATED WHEEL END COUPLER - An integrated wheel end coupler for replacing an OEM coupler is disclosed. Since the current device is a replacement part for the OEM actuator, it has the same overall external dimensions and mounts in the vehicle in the same manner as a replacement OEM actuator. The coupler has a ring gear with splines dimensioned to mesh with splines on the half-shaft and hub. Preferably, the ring gear includes an internal insert positioned between the half-shaft and hub that prevents slippage off of the splines. The ring gear is located so that the splines on both the hub and the half shaft are locked together mechanically and they spin at the same rate of speed. The coupler also includes pins to receive and close off the airlines associated with the OEM actuator being replaced, and a | 02-11-2016 |
074458000 | Worm and helical | 12 |
20080229858 | Resin Double-Helical Gear - In a resin double-helical gear formed by injection-molding, smooth meshing of teeth can be performed for rotation of the resin double-helical gear in both directions, and occurrences of thrust-direction load and noise can be prevented. | 09-25-2008 |
20080276742 | Resin Double Helical Gear and Gear Train Using Same - There are provided a resin double helical gear capable of reducing operation noises and vibrations of an ink jet printer, and a gear train for an ink jet printer using the same. The gear train | 11-13-2008 |
20100083782 | POWDER METAL FORGING AND METHOD AND APPARATUS OF MANUFACTURE - A method of forming a powder metal forging, which includes the steps of providing a preform including a sintered powder metal composition; inserting the preform in at least one part of a die set having a top die and a bottom die, at least one of the top die and the bottom die defining a helical forge form therewithin; closing the die set wherein the top die is contacting the bottom die; and compressing the preform in the forge form using an upper punch including a core rod and a lower punch, the compressing step occurring after the closing step, the compressing step resulting in a formed part having a helical outer surface. The method and apparatus of the present invention is particularly advantageous when forming a powder metal forging helical outer surface and an inner contour such as a cylindrical inside diameter. | 04-08-2010 |
20100307274 | Worm Wheel, Method of Producing Injeciton-Molding Die for Worm Wheel, and Method of Producing Worm Wheel - A worm wheel is provided in which a step is not formed near a tooth face meshing with a worm, and noise does not easily occur during power transmission. | 12-09-2010 |
20110219898 | GEAR STRUCTURE - A gear structure comprising: a reinforcement member fixed onto a side surface of a gear; and a fixation section configured to fix the reinforcement member onto the side surface of the gear, the fixation section being provided on a line of contact action of the gear. | 09-15-2011 |
20110271780 | NON-TRANSMISSION-ERROR AND NON-BACKLASH GEARS - As for the gears, this invention makes the transmission angle error and the backlash very small, and reduces vibration and mechanical sound. If form of the teeth in gears are made into the circle, at the angle which the peak of a tooth top and the peak of a tooth bottom overlap, the backlash of the gears will be made to zero. As for the other mesh angle, the correct degree of transmission angle is included in the range of the backlash. If it sets it as 1 cycle to become mesh of the same condition, as for one half of cycles, it will be in the condition which the tooth top and the tooth bottom replaced, and will become the same mesh. If the slice of the gears of the circle-tooth is made as the helical gear by the detailed lamination, the mesh from which the phase shifted exists in that pitch point, and the action of the gears are limited at a zero-backlash-part. Hence, if it is the helical gear of the phase-width of more-1/2-cycles of the circle-tooth, it will be an exact-transmission-angle in all the rotation-angles, and it will become mesh of the zero-backlash. Moreover, it sets up the margin to the collision direction and has the tooth-form-shaping, as the zero-backlash of the aforesaid gears is maintained. | 11-10-2011 |
20120060634 | RETAINER MADE OF SYNTHETIC RESIN FOR USE IN A DEEP GROOVE BALL BEARING; DEEP GROOVE BALL BEARING; AND GEAR SUPPORT DEVICE - A retainer made of a synthetic resin for use in a deep groove ball bearing is proposed of which the lubricity has been improved. The retainer includes a cylindrical first split retainer member ( | 03-15-2012 |
20120067152 | BEARING ASSEMBLY - A roller bearing comprises at least two rows of rollers disposed between an inner ring and an outer ring. At least two tracks guide the respective rows of roller and are defined in the axial direction of the inner ring or the outer ring. At least one flange abuts axial ends of axially-adjacent rows of rollers and extends radially from a radially outer side or a radially inner side of the inner ring or the outer ring. At least one recess is defined on the side of the inner ring or the outer ring that is opposite of the radially outer side or the radially inner side of the inner ring or the outer ring, from which the at least one flange radially extends. The at least one recess at least partially overlaps the at least one flange in the axial direction. | 03-22-2012 |
20130061704 | ENVELOPING SPIROID GEAR ASSEMBLIES AND METHOD OF MANUFACTURING THE SAME - A gear assembly includes a single piece gear body having a first axis of rotation and including opposing first and second surfaces each having spiroid gear teeth formed therein. The gear teeth radially extend outward from the first axis of rotation. The gear teeth on the first surface also extend from the first surface toward the second surface and the gear teeth on the second surface also extend from the second surface toward the first surface. The gear teeth on the first surface and the gear teeth on the second surface are configured to concurrently engage teeth of a pinion such that rotation of the pinion is translated to rotation of the gear body around the first axis of rotation. | 03-14-2013 |
20130074627 | WORM WHEEL GEAR FOR BLDC MOTOR - A worm wheel gear for a BLDC motor transmits the operation of a shift gear of an armature unit in a BLDC motor. The worm wheel gear may include a worm wheel-threaded portion formed on the outer circumferential surface with one side of a thread groove recessed and open and the other side of the thread groove closed, a worm wheel central shaft formed at the center portion, and internal support members protruding from the worm wheel central shaft and connected to the inner circumferential surface of the worm wheel-threaded portion to support the worm wheel-threaded portion. Therefore, it is possible to improve efficiency of transmitting operation and reduce operational noise by increasing the contact surface between the worm wheel-threaded portion and the shift gear. | 03-28-2013 |
20130091970 | FREE-FORM SURFACE GEAR - A transmission gear has a tooth surface formed of a free-form surface instead of an involute surface and a root area formed of a free-form surface instead of a trochoid surface. With such a transmission gear, the fatigue strength against contact pressure can be increased by reducing the Hertzian stress in the area around the meshing point of the tooth surface. The tooth surface is formed of a free-form surface in which the smallest radius of curvature in an area around a mating pitch point is maximized, and the fatigue strength against bending can be increased by reducing the bending stress at a tooth root portion of the bottom land. In addition, the gear noise can be reduced. The bottom land is formed of a free-form surface in which the smallest radius of curvature in an area around a tooth root is maximized. | 04-18-2013 |
20150082930 | GEAR MECHANISM AND MANUFACTURING METHOD OF GEAR MECHANISM - In a gear mechanism that includes a gear in which a tooth trace is twisted at a predetermined angle with respect to an axial direction, a curvature radius along a line of contact at a meshing position where a line of contact does not intersect a pitch circle is formed larger than a curvature radius along a line of contact at a meshing position where a line of contact intersects a pitch circle, on a plane of action of the gear. | 03-26-2015 |
074459500 | Bevel | 6 |
20080289441 | Gear Wheel with Damping Element - The invention relates to a toothed wheel of a gear drive, particularly for electric hand machine tools, comprising a toothing and a damping element made of an elastic material, the element being disposed in a recess of the toothed wheel. The object of the invention is to improve the effectiveness and the operational safety of the damping element on a toothed wheel with little effort in order to increase the service life of the gear drive. The task is solved by the toothed wheel ( | 11-27-2008 |
20100269618 | POWER TRANSMISSION DEVICE WITH BEVEL GEAR - Provided is a power transmission device with a bevel gear for supporting a bevel gear or a shaft with the bevel gear through a bearing. The bearing solely has a structure in which its rolling elements support without play a thrust load in both directions of the bevel gear or the shaft with the bevel gear. A pitch circle of each of the rolling elements may be located on the outside of an inner end of a tooth of the bevel gear in the radial direction. | 10-28-2010 |
20110126654 | BEVEL AND HYPOID GEAR AND METHOD OF MANUFACTURE - Bevel and hypoid gears are used in power transmissions including automotive applications. Provided is a net shaped bevel or hypoid gear having a generally annular gear body including a plurality of radially outwardly extending gear teeth formed from a generally annular blank made of powdered metal. Also provided is a method for manufacturing a net shaped bevel or hypoid gear including the steps of providing and optionally heat treating a generally ring-shaped or annular blank made of metal powder, then incrementally deforming the blank by orbitally forming or roll forming to produce a net shaped gear member with a plurality of outwardly extending gear teeth, which may be of a bevel or hypoid type. | 06-02-2011 |
20110185834 | Spinning Apparatus and Method of Assembly - The present invention is directed to a modular spinning apparatus adapted for the centrifugal separation of components in a biological sample. In one embodiment, the modular spinning apparatus comprises several non-lubricated elements which are designed and adapted for manual assembly within a sterile operating room. The elements comprise a lubrication free gearbox with a non-lubricated gear system therein, a rotatable riser shaft engaged with the gear system and a riser head fixedly engaged with the rotatable riser shaft. | 08-04-2011 |
20160040769 | BEVEL GEAR HAVING MODIFIED GEOMETRY - Bevel gear having a main body comprises a heel-side skin surface. The bevel gear has at least one tooth gap, which exits from the main body in the region of the skin surface. The tooth gap has a tooth base, the profile of which is defined by a base cone angle in relation to the workpiece axis of rotation. A concentric circumferential ring structure is provided on the skin surface, which is raised in relation to the skin surface, and which results in a heel-side exit angle between the tooth base and the ring structure, which is in the range between 125° and 160°. | 02-11-2016 |
20160047454 | Straight Bevel Gear with Spherical Involute Configuration - A straight bevel gear having a gear body that includes a first set of gear teeth and at least one web. The set of gear teeth may have a spherical involute configuration. The web may extend between adjacent members of the set of gear teeth such that the web may be completely and continuously curved in multiple directions. | 02-18-2016 |
074460000 | Spur | 35 |
20090293659 | WAVE-GEAR-TYPE LINEAR-ACTUATION MECHANISM - A wave-gear-type linear-actuation mechanism comprises a flat-type wave gear; a lead screw that is a structural component of the wave gear and is formed on an outer peripheral surface of a first circular spline; and a linear-actuation cylinder threaded onto the lead screw, a linear-actuation cylinder | 12-03-2009 |
20110113911 | GEARING OF A GEARWHEEL - The invention relates to the gearing of a gearwheel having a plurality of teeth. The gearwheel has a useful area and a base area of the particular tooth flank form. Viewed in normal section, the tooth base area extends from a base circle up to a useful circle. The tooth flanks of adjacent teeth in normal section are each implemented as symmetrical to one another, the axis of symmetry intersecting the base circle in the base point. According to the invention, the tooth flanks are implemented in the tooth base area as a tangent function from a relevant diameter. The tangent function merges at the relevant diameter in a constant tangent into the tooth flank form of the useful area. The tangent function merges in the tooth base area in a constant tangent into an orbit, which is tangentially applied in the base point to the base circle. Significant increases of the tooth base strength may thus be achieved. | 05-19-2011 |
20120006137 | GEAR DRIVEN ACCESSORY FOR GEARBOX - An accessory gearbox assembly for an aircraft includes one or more intermeshed gears disposed in a gearbox housing and configured to transfer rotational energy from an engine core. An accessory component has a spur gear located at least partially in an accessory housing. The spur gear is meshed with a gear of the one or more gears thereby transferring rotational energy from the gearbox to the accessory component. A method for providing rotational energy to an accessory component at an accessory gearbox includes providing rotational energy to one or more intermeshed gears of an accessory gearbox and locating an accessory component at the accessory gearbox. The accessory component includes a spur gear disposed at least partially in an accessory housing. The spur gear is meshed with a gear of the one or more gears and rotational energy is transferred to the accessory component via the spur gear. | 01-12-2012 |
20150053037 | SINTERED MEMBER, PINION GEAR FOR STARTERS, AND PRODUCTION METHOD THEREFOR - The present invention provides a sintered body and a production method therefor in which effects of pores remaining at a surface of the sintered body can be avoided without removing the pores by machining and plastic working, thereby obtaining strength equivalent to that of ingot materials. The sintered member comprises: a hardness distribution in which hardness contiguously varies from a surface to an inner portion; a Vickers hardness value of 730 or less at the surface; the maximum hardness of which portion exists in a region of 150 to 300 μm from the surface; wherein the maximum hardness is a Vickers hardness value of 600 or more. | 02-26-2015 |
20160114544 | GEAR AND MANUFACTURING METHOD THEREOF - A reinforcing fiber sheet and a first thermoplastic resin sheet are stacked into a cylindrical shape to form a sleeve portion, and a second thermoplastic resin sheet is stacked around an outer periphery of the sleeve portion to form a tooth formation portion. Thereafter, the sleeve portion and the tooth formation portion are heated and pressed, and teeth are then formed in an outer periphery of the tooth formation portion to form a tooth portion. A gear is manufactured by this process. | 04-28-2016 |
074461000 | Yieldable | 10 |
20090044651 | Flexible Meshing-Type Gear Device and Steering Device for Vehicle - Meshing surfaces are formed on the tooth surfaces of the teeth of a fixed side internally toothed gear, and positions of the meshing surfaces match with a track formed by addendum edges of teeth of a flexible externally toothed gear that moves with rotation of a wave generator. In the same manner, meshing surfaces are formed on the tooth surfaces of the teeth of a movable side internally toothed gear, and the positions of the meshing surfaces match the track formed by the addendum edges of the teeth of the flexible externally toothed gear that move with the rotation of the wave generator. | 02-19-2009 |
20090139357 | Method For Setting Nonpositive Deflection, Maximum Meshable Tooth Profile In Flat Wave Gear Device - In a flat wave gear device, there is determined a rack-approximated movement locus Lc | 06-04-2009 |
20090139358 | Method For Setting Gear Tooth Profile In Flat Wave Gear Device On Side Where Gears Have Same Number Of teeth - In a flat wave gear device in which a flexible externally toothed gear and the rigid internally toothed gear have the same number of teeth, an arcuate tooth profile is imparted to a flexible externally toothed gear, a contact point C between tooth profiles of a flexible externally toothed gear and a D-side rigid internally toothed gear is determined from an arc center A of the arcuate tooth profile of the flexible externally toothed gear and from a momentary center S of relative movement between the gears, and a main part of a tooth profile to be formed in the D-side rigid internally toothed gear is calculated based on the contact point. The tooth profile of the D-side rigid internally toothed gear can be accurately designed; therefore, meshing between the gears can occur with zero backlash, ratcheting torque can be increased, and continuous meshing can occur across a wide range of the movement locus of the tooth profiles of both gears. The load capability of the flat wave gear device can accordingly be increased. | 06-04-2009 |
20090260470 | BACKLASH-COMPENSATING GEAR TRAIN FOR HOROLOGICAL MECHANISM - At least some of the uniformly distributed teeth of one of the antibacklash partner toothed wheel units, of this backlash-compensating gear train for a horological mechanism, have elastic parts (D | 10-22-2009 |
20100031765 | Injection-molded resin face gear - An injection-molded resin face gear is provided that can suppress deterioration of gear accuracy caused by shrinkage of resin material after injection-molding, and allow accurate and smooth rotation transmission. | 02-11-2010 |
20100077882 | COAXIAL GEAR SET - A coaxial gear set, in particular a hollow shaft gear set for industrial drive technology, having high power density, comprising a drive element ( | 04-01-2010 |
20100212446 | WAVE GEAR DEVICE - In a cup-type or “silk hat”-type wave gear device ( | 08-26-2010 |
20110138952 | Method for setting non-positive deflection, maximum meshable tooth profile in flat wave gear device - In a flat wave gear device, there is determined a rack-approximated movement locus Lc1 of a flexible externally toothed gear with respect to an S-side rigid internally toothed gear accompanying rotation of a wave generator. (ρ | 06-16-2011 |
20110154928 | WAVE GEAR DEVICE HAVING COMPOUND TOOTH PROFILE OF POSITIVE DEFLECTION MESHING - In a wave gear device ( | 06-30-2011 |
20120285283 | WAVE GEAR DEVICE HAVING THREE-DIMENSIONAL CONTINUOUS CONTACT TOOTH PROFILE - In a wave gear device, similarity curve tooth profiles for defining the tooth-face tooth profile of each of a flexible externally toothed gear and a rigid internally toothed gear is determined from the movement trajectory, relative to a tooth of the rigid internally toothed gear, of a tooth of the flexible externally toothed gear at a main cross-section at which the deflection factor is κ=1. Tooth profile curves, which have been subjected to profile shifting corresponding to the difference between the deflection factor κ | 11-15-2012 |
074462000 | Form | 20 |
20080236320 | Resin gear - Noise can be effectively reduced without rotative power transmission accuracy being compromised. | 10-02-2008 |
20080282827 | Kind of Gear Pair for Power Transmission in Speed Increaser or Reducer and Its Forming Method - This invention relates to a kind of gear pair for power transmission in speed increaser or reducer and its tooth profile forming method, the tooth profiles of driving gear ( | 11-20-2008 |
20090049942 | Cornu's Spiral Tooth Gear - A Cornu's spiral is applied to a tooth profile of a gear. In accordance with the application of the gear, the Cornu's spiral may be modified two-dimensionally by some constant proportion. Since Cornu's spirals have similarity are similar, when a pressure angle is determined, the tooth profile can be standardized by a module, so that it is highly versatile. | 02-26-2009 |
20090064812 | TOOTHING SYSTEM OF A GEARWHEEL HAVING INVOLUTE ROLLER TOOTHING - In the toothing system ( | 03-12-2009 |
20090107275 | Gear Having Improved Surface Finish - There is a gear set. The gear set has a) a first gear having a first surface and b) an intermeshing second gear having a second surface. The first and second surfaces each, independently, have an isotropic arithmetic mean roughness, Ra, of about 3 microinches or less and are lubricated. There is also a method for increasing the contact surface-fatigue life of a gear set. | 04-30-2009 |
20090120227 | Method of Designing Gear Using CAD System, and Gear - The invention is a method of designing a gear, the method including: a first modeling step of modeling one tooth flank ( | 05-14-2009 |
20090151494 | Methods and Systems to Enhance Efficiency of Power-Transmission Systems Containing Higher Viscosity Lubricants - A power transmission system and a method for enhancing the efficiency of such systems are provided. The system and method includes a lubricant having a viscosity from about 0.01 centistokes to about 400.00 centistokes, power transmission components with a contact surface finish of less than about 16 microinches, and coating the power transmission components with the lubricant during operation of the system. | 06-18-2009 |
20090158876 | MODULAR GEAR TEETH AND GEARS EMPLOYING SAME - A group of networked elements for controlling the equipment of a building, when the elements are in a learning mode, can be assembled by a pair of actions. The first action exerted by an installer on one of the elements should be interpreted as an interrogation concerning the state of membership in the group (for example, as included or excluded) of one of the elements of the group. The first action triggers the emission of an information signal regarding the identified element's state. The following, or second, action exerted on the chosen element is interpretable as an order for modifying the state of membership in the group of the chosen element. | 06-25-2009 |
20090165585 | Zhuravlev Gear Drive - The inventive gear drive comprises toothed wheels with teeth of toothed crowns interacting with single- or multi-flow elements. Working profiles of the interacting teeth comprise piecewise and/or pointwise conjugate, convex at a tooth point and concave at a tooth root arc-shaped sections continuously connectable to each other or to involute sections. The interacting toothed crowns are so embodied that a phase gap of the face tooth intermating at a discrete angle from a point, where the interaction of profiles ends at a point, where the interaction of the face profiles of the next tooth pair starts. The drive is so embodied that the face tooth overlap ratio thereof is less than 1. The so improved teeth provide for high level of the contact tightness and absence of axial forces at engagement, increase the structural flexibility of the gear drive teeth in order to improve their qualities. | 07-02-2009 |
20090255359 | ROTATIONAL DRIVE TRANSMISSION MECHANISM AND IMAGE FORMING APPARATUS USING THE SAME - A rotational drive transmission mechanism used in an image forming apparatus for transmitting rotational drive force using an internal gear and an external gear having involute tooth profiles, includes photoreceptor drum drive couplings for transmitting rotational drive force to photoreceptor drums and a transfer drive coupling for transmitting rotational drive force to an intermediate transfer belt drive roller. The internal gears provided for these are so formed that all the drive vectors of the rotational drive force transmitted to the teeth of either the internal gear or the external gear in mesh with the internal gear, are made uniform so as to be oriented either outwards from the center of the rotational axis or inwards toward the center of the rotational axis, equivalently relative to the center of the rotational axis. | 10-15-2009 |
20100000357 | Gear Pair Consisting Of A Crown Gear And Of A Pinion Gear - The invention relates to a gear pair consisting of a crown gear ( | 01-07-2010 |
20100011895 | GEARS AND GEARING APPARATUS - In a gear (G | 01-21-2010 |
20110083523 | GEAR AND METHOD FOR FORMING TOOTH PROFILE THEREOF - The present invention discloses a gear and a method for forming a tooth profile thereof. In the method of the present invention, a cubic curve is used to modify a basic tooth shape of a standard rack to obtain an amended basic tooth shape, wherein the cubic curve contacts tangentially with the basic tooth shape at the midpoint of a dedendum, a midpoint of a lateral and a midpoint of an addendum of the basic tooth shape. The amended basic tooth shape is reproduced to obtain an amended rack, and the amended rack is further used to generate a tooth profile of a desired gear. | 04-14-2011 |
20120036955 | Involute gear - A gear for driving a linear member comprising a tooth tip, a tooth base, a contact face disposed between the tooth tip and the tooth base, the contact face having the shape, X=L sin(α−Θ) and Y=L cos(α−Θ), where tan(α)=(B/2+2πΘ/360) /R, L=(R{circumflex over (0)}2+(B/2+2πΘ/360/R){circumflex over (0)}2){circumflex over (0)}0.5, B=width of tooth base, R=pitch radius, Θ=relative angle of gear tooth to contacting member, a linear member comprising a plurality of holes, and the contact face engagable with the linear member through a hole. | 02-16-2012 |
20120118093 | GEARING PROFILE WITH CONSTANT TORQUE - A functional portion of an edge of each tooth of the toothed wheel has a profile which complies with the parametric double formula (in Cartesian coordinates): | 05-17-2012 |
20130112028 | PUMP ROTOR - A pump rotor is an inner rotor of an internal gear pump, the inner rotor having a tooth profile, wherein a half-tooth portion of the tooth profile is formed of three tooth-profile formation circles that are elliptical or true-circular. Two of the tooth-profile formation circles are a combination of a small tooth-profile formation circle and a large tooth-profile formation circle in which the small tooth-profile formation circle is inscribed and is entirely included. A portion of the small tooth-profile formation circle forms an addendum portion of the half-tooth portion. A portion of the large tooth-profile formation circle in which the small tooth-profile formation circle is inscribed and is entirely included forms an engagement portion of the half-tooth portion. A portion of another tooth-profile formation circle that circumscribes the large tooth-profile formation circle forms a dedendum portion of the half-tooth portion. | 05-09-2013 |
20130186225 | Gear - A gear having a tooth form shape including, on a tooth root side of a tooth, a first curved surface connected to a tooth face of an involute tooth form and convex in a direction opposite to the tooth face, a flat surface connected to the first curved surface, and a second curved surface connected to the flat surface and convex in the same direction as the first curved surface. In a normal plane, the shape of the flat surface is a tangent in contact with a tip side end of a trajectory of motion of a tooth of a meshing partner gear and intersecting with a tooth form center line at a 30° angle, the shape of the first curved surface is circular arcs in contact with the tangent, and, the shape of the second curved surface is circular arcs in contact with the tooth face and the tangent. | 07-25-2013 |
20150337942 | GEAR DEVICE - A gear of a gear device includes a plurality of teeth having tooth surfaces. The tooth surfaces are shaped such that contact length ratios of three or more of the teeth are outside a predetermined range centered on an average value of the contact length ratios of all of the teeth, where the contact length ratio is obtained by dividing a contact length of a tooth contact face by a diagonal length of a plane of action. | 11-26-2015 |
074464000 | Antifriction | 1 |
074465000 | Roller | 1 |
20130031996 | Pin Roller Type Pinion Device - In a pin roller type pinion device, a first bearing has first pin needles rollably arranged around pin rollers between an inner surface of first circular holes and one end portion of the pin rollers. A second bearing has second pin needles rollably arranged around the pin rollers between an inner surface of second circular holes and the other end portion of the pin rollers. This prevents an external pressure from developing on the inner surface of the circular holes when inserting the pin needles between the inner surface of the circular holes and the end portions of the pin rollers. | 02-07-2013 |
074466000 | Twisted | 1 |
20090301247 | GEARS AND COUPLING APPARATUS USING THE GEARS - Tooth shapes of gears are formed such that a meshing line given by meshing of an inner gear and an outer gear provided in a state of meshing with each other for enabling transmission of a power is configured as a spiral mesh line | 12-10-2009 |