Class 74/460 - Spur

Subclass of Class 74 - Machine element or mechanism
Definition: Devices comprising spur teeth.
No. of patents: 68
Last issue date: 01/24/2012

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Number	Title	Issue Date
8100027	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. The tooth face 2 of the gear is smoothed by ...	01/24/2012
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 holes is formed at the one end surface in an axial direction of the p...	10/21/2008
7284634	Electric power steering apparatus An electric power steering apparatus comprises a rotary shaft member connected to a steering wheel, an elongate member, a rack-and-pinion mechanism, a ball screw mechanism constructed of a screw member, a nut member and a multiplicity of balls interposed between the...	10/23/2007
7280947	Gear-driving-system designing system Featured are a system and method for designing a gear driving system. The designing system includes a characteristic setting section, calculating section and comparing section. The calculating section simulates an oscillation that is caused in the final gear of the ...	10/09/2007
7258037	Gear protected against overloading The invention concerns a gear for precision devices comprising at least two mutually co-operating toothed wheels (10, 14). The teeth (12, 16) of the two wheels have the same thickness (e) and the teeth of one of them (10) are provided with a rad...	08/21/2007
7178420	Ring gear A ring gear includes teeth (10) and tooth gaps (12), in which the teeth (10) can be brought vie tooth flanks (14) into engagement with a corresponding pinion. The tooth flanks (14), after a final engagement point (16) of the...	02/20/2007
7155995	Injection molded resin gear, injection molded resin rotating body, and injection molded article An injection molded resin gear 1 has a rim 6 having teeth 7 on its outer periphery, a hub 4 for receiving therein a shaft, and a web 6 connecting the rim 6 to the hub 4. The thickness (t1) of the bottom 15	01/02/2007
7111523	Rotational power transmitting drive component with improved acoustic and assembly characteristics A structural power transmitting component embodies a shaft and a gear or pulley held threadedly positioned on the shaft by four nuts while interconnected by a torque transmitting wedge and key. The shaft is especially configured to establish structural interrelation...	09/26/2006
7107871	Axially securing gearwheels in crown gear angle drives on one side A crown gear assembly including a crown gear which is rotatably supported around a first axis (A1) and which forms teeth (13) which are provided with flanks (14, 15) whose mantle lines extend substantially radially relative to the axis (A1	09/19/2006
7097580	Sprocket for a silent chain and method of manufacturing the same A sprocket for preventing the partial wear on the teeth of the sprocket. The teeth of the sprocket comprised of a pair of side portions located on opposite sides of a tooth and a central portion located between the pair of sides. The pair of side portions has a hard...	08/29/2006
7077026	Gear tooth profile curvature A gear system which includes a pinion and mating-gear forming a gear pair with a predetermined gear ratio (mG), center distance (C), face-width (Fw), and limiting stresses. The pinion has a pinion tooth number (N1) and a first plural...	07/18/2006
7028572	Pitch transfer gear and transmissions A pitch transfer gear transmission which enables drive to be transmitted from a gear of having one modulus (42) to a gear having another modulus (46) includes at least two gears (12,16) which have a different number of teeth and which are able t...	04/18/2006
7025167	Shaft to transfer torque in a vehicle One preferred embodiment of the invention is a shaft to transfer torque in a vehicle including a first member having internal splines and a second member having external splines engagable with the internal splines to allow telescopic movement between the first membe...	04/11/2006
7021042	Geartrain coupling for a turbofan engine Molybdenum disulfide (MoS2) is used as a journal coating for a gearing system. A particular application is the planetary gear system of a geared turbofan engine. Particularly advantageous coatings are deposited via physical vapor deposition (PVD) techniqu...	04/04/2006
6966115	Pruning scissors Pruning scissors comprise a blade and a counter-blade each integral with a grip and mounted so as to be pivoted around a threaded swivel pin cooperating with an adjusting nut of the blade and counter-blade. The nut is rotationally integral with a toothed wheel meshe...	11/22/2005
6941832	Injection molded resin gear, injection molded resin rotating body, and injection molded article An injection molded resin gear 1 includes a rim 4, a hub 3 and a web 5 which connects the rim 4 to the hub 3. A plurality of ribs 7 for guiding a molten resin, which is injected from pin point gates 8, to the h...	09/13/2005
6935482	Clutch gear having boss part with spline and method for manufacturing the same A clutch gear having a boss part with a spline which is formed on an outer peripheral surface of the boss part formed on an axial end surface of the clutch gear having jaw clutch teeth formed on an outer peripheral surface thereof, in which the boss part, with the s...	08/30/2005
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 Tooth Topological (GTT) modifications to compensate for the errors, ...	07/19/2005
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 connecting the boss and the rim to each other. At least one groove is ...	04/26/2005
6732606	Polished gear surfaces An optimally finished gear has a surface roughness between approximately 5 micro-inches Ra to 10 micro-inches Ra. The reduced surface roughness, when located at the gear teeth, can reduce the maximum contact stress by more than fifty percent. Similarly, the subsurfa...	05/11/2004
6684729	Toothed gear A toothed gear includes an outer toothed rim 1, a hub 3 and a profiled bridge area 2 connecting the toothed rim 1 and the hub 3 as one piece. The bridge area 2 is connected to the toothed rim and the hub in different planes. The bridge area consists of un...	02/03/2004
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 angle at the dedendum of the pinion, and a pressure angle...	06/03/2003
6487922	Steam turbine inlet sleeve inspection apparatus and method An inspection apparatus (40) for remote inspection of the trepan radius area (34) of the inlet sleeve (24) of a steam turbine (10). The apparatus (40) provides a sealed volume (50) between a pair of inflatable bladders (46,48) for the introduction of a li...	12/03/2002
6418810	Coplanar reverted gear train loop A gear assembly includes a first gear including first set of teeth and a first addendum circle, and a second gear having a second set of teeth meshing with the first set of teeth, The shape of the addendum flank of each first tooth and the shape of the ad...	07/16/2002
6349607	Transfer ring for continuously variable transmission A transfer ring (10) for a continously variable transmission. The transfer ring (10) includes an inner ring (12), an outer ring (18) and a spacer ring (24). The inner, outer and spacer rings are substantially coaxial with a transfer ring (10) axis. The sp...	02/26/2002
6212967	Variable gear assembly and method A variable gear assembly has a cam gear with a plurality of teeth of varying size and configuration, and a rotatably mounted roller gear has a plurality of rollers for meshing engagement with the teeth. The distance of each roller from the rotation axis a...	04/10/2001
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 composite curve consisting of the envelope obtained by axially pr...	01/02/2001
6142033	Shaft-hub unit A shaft/hub unit having a toothing assembly for transmitting torque, comprising a shaft (1) with shaft toothing (5) and a hub (2) with hub toothing (7), which sets of toothing engage one another, with torque being introduced by a shaft shank (4) at whose ...	11/07/2000
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 tooth-formed member is made of ferrous or copper material...	07/04/2000
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 steel suitable for stamping and by means of a progressive...	07/04/2000
6065362	Sealed-type wave gear device A sealed-type wave gear device 1 has a sealed space 13 formed by a device housing 2, first and second end plates 3 and 4 placed in openings at both the ends thereof, a hollow Input shaft 5, and first to fourth seals (8, 9, 11, 12) for sealing these member...	05/23/2000
6055880	Transfer ring and gear arrangement for non-slip continuously variable transmission A continuously variable transmission (10) having input (12) and output (14) gearsets each having a pair of bevelled gears (16) rotatable about generally coplanar respective axes of rotation (22) and with the two bevelled faces (24) in a spaced-apart paral...	05/02/2000
5953956	Pinion of starter motor for internal combustion engine A pinion (7A) of a starter motor for an internal combustion engine, which pinion has an outer peripheral surface formed with gear teeth (7G) and an inner peripheral surface snugly fit with a bearing (8) so that the pinion can slideably move along an outpu...	09/21/1999
5946975	Interference preventing gear in communication equipment and electric apparatus A high addendum tooth for a spur gear that prevents interference upon engagement with other high addendum gear teeth when the engaging gears are not perfectly aligned. The gear tooth design is divided into two portions along the face width of the tooth. T...	09/07/1999
5934157	Flexible meshing type gear device having a high wear-resisting rigid internal gear A flexible meshing type gear device 1 has an internal gear 2 having internal teeth 21, a flexible external gear 3 having external teeth 31, and a wave generator 4. Only the internal teeth 21 of the internal gear 2 are formed thereon with a metal plated co...	08/10/1999
5913939	Face gear having a notched positioning groove on the circumference 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 circumf...	06/22/1999
5884527	Gear wheels rolled from powder metal blanks 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 too...	03/23/1999
5809649	Method for the manufacture of a machine part having external toothing A method for the manufacture of a machine part with external toothing from a circular sheet metal blank. According to this method the blank is fixed between a tool and a tail stock. Subsequently the circumferential edge of the circular sheet metal blank i...	09/22/1998
5711187	Gear wheels rolled from powder metal blanks and method of manufacture 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...	01/27/1998
5404640	Method of forming toothed wheels A method is provided for forming a one-piece sheet metal toothed wheel including a central sheet metal wall of predetermined thickness and a series of integral teeth on the periphery of the central wall. The method comprises a combination of steps the initial ...	04/11/1995

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Class 74/460 - Spur