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Match Document Document Title
7581695 Aircraft with a modified gear, and method of producing the gear  
There is described a helicopter having a transmission for transmitting motion from a driving member to a driven member; the transmission has at least a first gear driven by the driving member, and...
7581463 Gear modification that enables direct off-center engagement  
A gear and a method for combining a first gear with a second gear including the steps of moving the first gear relative to the second gear such that a first tooth of the first gear contacts a...
7526977 Resin-made gearing apparatus  
A resin-made gearing apparatus that includes a configuration in which only one tooth flank side of each tooth in one of a pair of gears is provided with an overhang section that is disposed on at...
7437967 Gear having window holes, and method and apparatus for manufacturing the same  
A gear having window holes, and method and apparatus for mafufacturing the same in which by depressing partially one end surface of a primary formed article, a plurality of concaves for the window...
7407373 Internal gear pump and an inner rotor of such a pump  
An inner motor is structured to increase the discharge rate of an internal gear pump by making it possible to freely adjust the eccentricity e between the inner and outer rotors. Each tooth of the...
7377355 Motor-driven power steering apparatus for a vehicle  
In a motor-driven power steering apparatus for a vehicle in which a worm wheel of a worm gear type speed reduction mechanism is fixed to a pinion shaft of a rack and pinion mechanism, a direction...
7267024 Gear, and method and apparatus for manufacturing the same  
An idler gear having a part worked by cutting is formed such that a chamfer part is formed at least on a portion between a tooth shape and chamfers are formed on the tooth shape by a forging...
7191521 Advanced geometry of skew and straight bevel gears produced by forging  
The present invention provides for bevel gears having a localized and stable bearing contact. The localization of bearing contact is achieved by substitution of flat tooth surfaces with parabolic...
7137312 Gear wheels roll formed from powder metal blanks  
A method is disclosed for the manufacture of gear wheels having two axially adjacent gears ( 4,6 ) thereon. A blank is prepared with the two gears crudely formed thereon by compressing and...
7077026 Gear tooth profile curvature  
A gear system which includes a pinion and mating-gear forming a gear pair with a predetermined gear ratio (m G ), center distance (C), face-width (F w ), and limiting stresses. The pinion has a...
7069805 Driving force transmission device  
A driving force transmission device includes a rim having a toothed outer periphery, with bottom lands being formed between respectively adjacent teeth and top lands being formed at teeth crests....
7024725 Overhead door closer with slide arm assembly  
This invention relates to an overhead door closer with slide arm assembly having a toothed pinion that is eccentrically supported and presents a circular rolling curve, which pinion meshes with a...
6964210 Gear tooth profile  
A gear and method for producing the gear. The gear has a gear tooth profile conjugate to a gear basic-cutter tooth-profile having an addendum with a convex portion having an addendum point proximal...
6918181 Gear tooth topological modification for reducing noise and vibration in transmission systems  
A method for improving acoustic and vibrational properties of gears includes determining the transmission errors of intermeshing gears due to stiffness variations in the gear teeth, performing Gear...
6896501 Single-screw compressor  
Present invention provides a single screw compressor from which only a small amount of gas to be compressed leaks and which can be manufactured at low costs. There are provided a screw rotor 1 ...
6893238 Ring gear machine clearance  
A displacement-type ring gear machine includes a casing including a gear chamber comprising a supply port and a discharge port, an internal gear accommodated in the gear chamber and comprising an...
6890164 Internal gear pump  
A noise-reduced internal gear pump incorporating an inner rotor having an addendum formed by a smooth curve and a dedendum formed by a hypocycloid. The tooth profile of the outer rotor is...
6883397 Gear made of resin, and mold structure  
A gear made of a resin includes a substantially cylindrical rim having a plurality of teeth formed around an outer periphery thereof, a boss formed about a rotational center of the rim, and a web...
6848558 Sintered selector or sliding sleeve  
A sintered selector or sliding sleeve, or gear shift sleeve, has internal claw toothing. The individual teeth are delimited on their ends with secondary surfaces having ends that extend radially...
6837123 Non-involute gears with conformal contact  
Several embodiments of various non-involute gear tooth profiles incorporate relief areas formed across the area of the tooth face generally symmetrically to each side of the pitch circle of the...
6799489 Wave gearing with three-dimensional deviatedly meshed tooth profile  
In a principal section of the flexible external gear of a wave gear drive, a position away from the major axis of an elliptically shaped neutral line of the rim of the flexible external gear is...
6769891 Rotary positive-displacement pump with meshing gear wheels without encapsulation, and gear wheel for such a positive-displacement pump  
A rotary positive-displacement pump comprises two gear wheels which mesh with each other without encapsulation. Each gear wheel has a plurality of teeth with a profile which falls within a band of...
6709250 Gear and a fluid machine with a pair of gears  
A kind of gear is provided with shorter teeth, transition teeth and at least one longer tooth. The cross-section of the longer tooth is of a hawk beak shape, and the profile of the longer tooth is...
6644947 Wave tooth gears using identical non-circular conjugating pitch curves  
This invention is directed to a novel wave tooth gear having a non-circular pitch curve and uniform wave teeth to create a tighter seal between meshing gears. The non-circular wave tooth gear has a...
6571655 Involute gear pair structure  
In an involute tooth profile pair structure, a pinion has a smaller pressure angle at its addendum than at its dedendum, and a pressure angle at an addendum of a gear wheel is equal to the pressure...
6481307 Bevel gear pair  
In a bevel gear pair including a first gear having a plurality of first gear teeth, each defined at least in part by a tooth route and concave and convex flank surfaces, the concave and convex...
6467375 Flexible meshing type gear device having deflection meshing involute tooth profile  
A flexible meshing type gear device has a rigid internal gear, a flexible external gear disposed inside the internal gear and a wave generator for flexing the external gear into an elliptical...
6401562 Method for producing gear wheels from blanks obtained by sintering metal powders  
A method for producing gear wheels from blanks obtained by sintering metal powders, comprising the step of coining longitudinal and transverse profiles of the teeth of a sintered blank with a...
6370979 Clutch gearing especially for a manual transmission  
In a coupling tooth formation, in particular in a gear box, either on a gear sleeve or on a gear wheel, the teeth are fitted to the base end of a cylindrical base ( 12 ) in relation to the...
6338693 Pivot-hung door drive  
A pivot-hung door drive system with an electro-mechanical or electro-hydraulic drive device that supplies the opening and closing moment required to open and close a connected pivot-hung door...
6324931 Straight bevel gears with improved tooth root area geometry and method for manufacturing forging die for making thereof  
A method for designing root area geometry of a straight bevel gear providing reduced stress concentration and increased tooth strength. Also, a method for making a forging die for manufacturing...
6289586 Manufacturing of half-crowned gear drives for motion quality improvement  
Manufacturing a drive system with a mating gear set with substantially reduced gear axis misalignment drive motion non-uniformity error with half-crowned gear teeth, crowned on only one side, to...
6276226 Cycloidal gear with small number of teeth  
A cycloidal gear with a small number of teeth includes a tooth of cycloid tooth. In the above construction, the number of teeth is four or five; and the cycloidal gear with a small number of teeth...
6230578 Variable face width gearing  
A form of gearing having teeth with different face widths along the tooth height and a method thereof of designing and manufacturing. Different gear tooth face widths are introduced along the tooth...
6205879 Helical and spur gear drive with double crowned pinion tooth surfaces and conjugated gear tooth surfaces  
Helical or spur gear drive comprising a driven gear and driving gear wherein the driving gear has double crowned teeth defined as (i) an envelope to a family of surfaces generated by a skew or...
6203439 Hydraulic machine  
A hydraulic machine with an orbiting displacement element connected unrotatably with an output shaft via an intermediary shaft, the intermediary shaft having at least at one end an external...
6193232 Drive mechanism for sheet material feed roller  
A gear wheel assembly is provided in a sheet material feed mechanism. The gear wheel assembly includes an annular cylindrical gear wheel having an interior surface defining an interior diameter,...
6178840 Gear form constructions  
A gearing system which includes a pair of conjugate gears. The tooth profile of the first gear lies entirely within the pitch circle of the first gear, and the tooth profile of the mating gear lies...
6167783 Flexible meshing type gearing having three-dimensional, non-interactive wide-area intermeshing tooth profile  
The meshing of the rigid internal gear and the cup-shaped flexible external gear of a flexible meshing type gear device is simulated with racks, similarity transformation is effected on the...
6164943 Internal geared wheel pump without crescent-shaped [sickle] piece  
An internal geared wheel pump that does not have a crescent shaped piece. The pump has an internal geared wheel that meshes with a pinion. The pinion and geared wheel are mounted in a rotatable...
6128969 Hybrid gear drive  
A hybrid gear drive suitable for the transformation of motion and power between an involute worm and a face gear wherein the axis of the face gear and the worm may be crossed or intersected. The...
6112611 Gear with modified tooth surface and gear tooth surface modification method  
A curvature of a locus of contact points at a higher torque value is increased such that the torque-dependent characteristic of the working transmission error assumes a minimum value in the...
6112609 Gear arrangement  
A gear arrangement 10 which comprises a first disc member 12 rotatable about a first axis 14 and carrying rings 16 of teeth 18, the rings 16 being centered on the axis 14 and at respective...
6101892 Gear form constructions  
A gearing system which includes a pair of gears. The tooth profile of the first gear has three portions: a concave portion lying within the dedendum of the first gear, a convex portion lying within...
6093106 Flexible coupling  
The tooth shape at around the pitch circle of the outer tooth gear of the pinion to be connected to the prime mover or driven shaft has a tooth surface which is in axial direction at around the...
6082222 Rigid internal gear of a wave gear drive  
A rigid internal gear of a wave gear drive is comprise by a tooth-formed member having inner teeth and a circular gear body member, these two members being integrally connected with each other. The...
6082001 Method for manufacturing a clockwork wheel  
A clockwork wheel (1) including a plate (3) provided with a first series of peripheral teeth (4) and a second series of teeth (5) arranged at right angles to the plate is manufactured in a strip of...
6080199 Gear designing method, gear manufacturing method, and gear manufactured by the same method  
Amplitude of transmission error of tooth pair of a gear is obtained in relation to actual contact ratio (ε r ) which is an angular range (θ r ) of actual contact of the surfaces of the tooth pair...
6026700 Tooth form parameters for ground teeth of gear spindle coupling and method of making the same  
A gearset for a gear spindle coupling or the like, and method for forming the same, comprising a sleeve gear and a hub gear which may be ground after surface hardening without the introduction of...
6025062 Cogged component for the mechanical transmission of force  
A cogged component, especially a wheel, rack, pinion, spline, or similar structure, intended for the mechanical transmission of force. The body is of a composite reinforced with carbon fibers. The...
Matches 1 - 50 out of 280 1 2 3 4 5 6 >