Class 74/459.5 - Bevel

Subclass of Class 74 - Machine element or mechanism
Definition: Devices comprising bevel teeth.
No. of patents: 39
Last issue date: 11/01/2011

Number	Title	Issue Date
8047092	Spiral bevel gear and gear device In a spiral bevel gear, a contact area between tooth flanks that mesh with each other is increased, thereby reducing teeth knocking noise and strengthening tooth sections. A shape of a tooth form on a normal plane T of a tooth section 15 of a spiral be...	11/01/2011
7827879	Webbed spiral bevel gear A webbed spiral bevel gear formed by cold forging includes: gear teeth formed at a peripheral surface of the gear basis to be integral therewith. Each gear tooth includes a tooth top land and a tooth bottom land both in a slanting and curved manner relative to a cen...	11/09/2010
7374013	Electric power steering apparatus An electric power steering apparatus comprises a steering assisting electric motor having an output shaft and a speed reduction mechanism. The speed reduction mechanism includes conical first and second gears to be engaged with each other. The first and second gears...	05/20/2008
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 process on an outer peripheral surface and an end part thereof in an axial ...	09/11/2007
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 tooth surfaces. This is accomplished by either modifying line-contact ...	03/20/2007
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
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
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
7069817	Power tongs Damage to pipe resulting from non-uniform application of gripping forces is minimized by modified power tongs employing pivoting jaws which automatically adjust to the circumference of the pipe. The pivoting jaws pivot about mounting pins which pass through an elong...	07/04/2006
7029415	Differential apparatus A differential apparatus having a limited slip differential mechanism which comprises a differential case, a pair of side gears housed in the differential case and connected to driving shafts, and pinion gears meshing with the pair of side gears. One of the tooth su...	04/18/2006
7021873	Radius end mill and manufacturing method of bevel gear forging die A technique having superior efficiency for manufacturing a bevel gear forging die is presented. In the present invention, raw material is machined by means of a radius end mill, manufacturing a bevel gear forging die 10. In recent years, it has become possibl...	04/04/2006
6928894	Compensated actuator with optimized power An actuator combining mechanical and hydraulic forces includes a cylindrical body and a piston that can slide relative to the cylindrical body. The piston and the cylindrical body are connected by a mechanical system for transmitting mechanical power that constitute...	08/16/2005
6732605	Bevel gear A bevel gear 1 has a radius of curvature R of a fillet curve provided between a tooth flank A and a bottom land B gradually increasing from a small-diameter end D1 to a large-diameter end D2. ...	05/11/2004
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
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 flank surfaces each define a first surface structure formed by...	11/19/2002
6446524	Ring gear supporting idler gear A power tong gear train which includes a ring gear having a series of teeth and a roller surface. The gear train further includes an idler gear assembly having a series of teeth and a roller element fixed thereto. The idler gear assembly is positioned suc...	09/10/2002
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 gears having improved tooth root geometry. The method include...	12/04/2001
6282972	Ball screw mechanism When balls 3 are discharged from a nut 102 in accordance with relative axial movement of the nut 102 and a screw shaft 1, in order to prevent the balls 3 from contacting with thread grooves 102a and 1a of the nut 102 and the screw shaft 1 at three points,...	09/04/2001
5941124	Face gearing with conical involute pinion The present invention is directed to a unique gear set including a conical involute pinion and a mating face gear. The mating face gear has an axis whose location and orientation is usually configured, as intersecting with or slightly offset from the pini...	08/24/1999
5662544	Side gear retention of pinion mates A gear mesh configuration which eliminates independent means for retaining a gear in rotational contact with another. As illustrated by the mesh formed between the cooperating teeth of a side gear and pinion mate in a vehicle differential assembly, the me...	09/02/1997
5528952	Webbed bevel gear A webbed bevel gear in which webs are formed of a minimal size so that the gear can be downsized, while also improving the mechanical strength of the gear. The webbed bevel gear is made so as to be capable of avoiding losses from the webs and so that the ...	06/25/1996
5288556	Gears and gear assemblies Improvements in gears and gear teeth structures for use in driving assemblies, such as machines, vehicles and the like, wherein the teeth portions of the gears and, in certain instances, other portions thereof, are coated with a hard synthetic diamond mat...	02/22/1994
5245851	Differential pinion, metal mold for plastic working the same, and method for plastic working with the metal mold The present invention relates to a differential pinion for automobiles or the like, a metal mold for plastic working the differential pinion, and a method for plastic working with the above metal mold. And particularly the differential pinion of the prese...	09/21/1993
5214971	Angular adjustment mechanism An angular adjusting mechanism for a headlamp assembly having a rigid two piece press fit molded gear housing assembly. The housing accepts a pair of angularly disposed bevel gears including a drive shaft and drive gear with the drive shaft journaled in a...	06/01/1993
5058449	Tip-relieved spiral bevel gear Prior art non-generated, tip-relieved spiral bevel gears had tip-relieved surfaces that were nonuniform from the toe to the heel thereof. The subject tip-relieved spiral bevel gear is adapted to be manufactured by a gear generating machine, and includes a...	10/22/1991
4966573	Differential speed reduction apparatus and double-toothed gear for use therein The production of differential speed reduction apparatus, which uses a double-toothed gear including face cams having tooth profiles uniquely generated to secure efficient speed reduction. The speed reduction apparatus includes an input shaft carrying the...	10/30/1990
4939953	Limited slip differential A limited slip differential includes four pinions formed of straight bevel gears and a pair of side gears formed of straight bevel gears. A pressure angle of a first surface of each of a plurality of teeth provided on each pinion is formed larger than tha...	07/10/1990
4754661	Limited slip differential In order to provide pulsating thrust on vehicle half-shafts during excess differential actions such as occur on spin-outs or skids on ice, the side gear teeth are modified to exhibit two different e.g. involutes on the single tooth engagement zone (P...	07/05/1988
4747322	Controlled torque transfer differential for a motor vehicle A differential which includes a housing (1a, 1b) through which axially extend two shafts (4, 5) for driving the driving wheels of the vehicle, sun gears (7, 8) mounted in the housing (1a, 1b) in coaxial relation to the shafts (4, 5) and connected to rotat...	05/31/1988
4702126	Axial gear train having syncline face cycloid gearing An axial gear train having syncline face cycloid gearing which includes an opposed, spaced apart first pair of face gears each of which is rotatably carried on respective shafts having a common axis, an inclined shaft fixed to the end of one of the two sh...	10/27/1987
4651587	Ring gear/pinion gear design A design for a series of ring gear and pinion gear right angle gear-sets (100) utilizing a single common ring gear (114) and a plurality of pinion gears (112A-D), each having different numbers of teeth, is provided....	03/24/1987
4607538	Angular torque transmission mechanism An angular transmission mechanism having two axles angularly disposed for torque transmission therebetween by two bevel gears which are embraced by an elastic toothed belt having a surface area which, in the untensioned condition of said belt, has the sha...	08/26/1986
4518287	Method of face mill generation of spiral bevel gears with integral central structure and resulting product A gear blank is integrally formed with a shaft or other central structure protruding axially from what is to be the toothed face of the gear. A spiral bevel gear is then cut by the face mill generation method, but with the cutter distance exceeding the ou...	05/21/1985
4308760	Heavy load capability gear wheel A gear is disclosed with a heavy loading capacity which has teeth roots between adjacent gear teeth and contact area patterns on the face of each gear tooth. Each tooth root includes a concave fillet running substantially in a direction of the rolling ele...	01/05/1982
4307797	Curved tooth gear coupling A gear coupling in which the two halves have curved teeth and tooth patterns which mirror each other. Both the pressure angle and the spiral angle for any contact point on either the concave or convex side of the tooth on the first coupling half, is equal...	12/29/1981
4244243	Variable leverage gearing A bevel gear set for particular use in providing a variable leverage torque proportioning effect in a differential. The bevel gear set includes a gear with bevel teeth and a pinion with bevel teeth which mesh and which meshing teeth have lines of contact....	01/13/1981
4226136	Gear drive assembly A compact drive assembly has a skew axis input gear set and a parallel axis output gear set. The input gear set includes a pinion having at least one helical thread thereon which drivingly engages a face gear. The face gear of the input gear set and the s...	10/07/1980
4003349	Rotary piston engine A rotary piston engine has a pair of lobed rotors affixed to parallel axes for rotation in respective connected cylinders defined by a housing. Pressure compensating channels are provided in the walls of the housing at the intersections of the connected c...	01/18/1977
3977267	Powdered metal gear for screw jack 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, ...	08/31/1976

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Class 74/459.5 - Bevel