Class 29/893.31 - Worm gear

Subclass of Class 29 - Metal working
Definition: Process for the shaping of a gear of the kind having a thread
No. of patents: 19
Last issue date: 05/01/2012

Number	Title	Issue Date
8166656	Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor A method of improving working of grooves of a screw rotor, in particular, working of grooves side in working efficiency, a working apparatus, a working tool, and a method of manufacturing a screw compressor are provided. A method of controlling rotation of a work an...	05/01/2012
7979988	Worm gear unit and method of producing same By finding a range of an allowable error of maximum meshing position of a worm shaft in an axial direction relative to a worm wheel, that is higher than that of a worm shaft of a conventional worm gear unit, a worm gear unit of the present invention is provided....	07/19/2011
7712219	Process for the aligning of tooth spaces of a workpiece with precut teeth In a process for the aligning of the tooth spaces of a workpiece with precut teeth, which is set up on the work spindle of a gear finishing machine, the workpiece (1) is brought into no-backlash double flank mesh with a pilot gear (6). The workpiece (	05/11/2010
7402006	Manufacturing method of gear device This method includes: a supporting process of supporting a worm wheel in a first supporting section of a supporting body; an engaging process of engaging a jig gear which corresponds to a worm with the worm wheel; a measuring process of measuring a distance between ...	07/22/2008
7073249	Method for providing a worm on an armature shaft of an electric motor, and armature produced by the method The invention relates to a method for mounting a worm on an armature shaft of an armature for an electric motor. The invention proposes first mounting armature parts, such as an armature lamination packet with armature windings, a commutator, a bearing seat, and/or ...	07/11/2006
7000495	Actuator device with intermediate rollers Actuator device comprising a support (2); a longitudinal drive rod (8), part of the rear end (9) of which is mounted and rotates inside the support, and of which a front end section (17) has an external screw thread (18) and on its...	02/21/2006
6948245	Gear and method of making the same In order that a worm 1 is rotated, a clearance (a region constituting a clearance portion between bearings and a worm gear) is formed (FIGS. 4(1) to (3)) in an upper surface of a base plate 3. A mold 12 for forming a lower h...	09/27/2005
6247376	Rollable enveloped worm with two curve profile A drive gear engages a driven gear with non-intersecting axes of rotation making an angle of approximately 90° with respect to one another. A shaft has a first portion with a predetermined diameter, and a second portion has an enveloped worm gear with at...	06/19/2001
5522278	Self-locking dual worm gear and the tools needed to produce it A self-locking dual worm gear with parallel axes and linear contact for the worms with involute herringbone gears is characterized by the fact that the cross sections for curvature radii pnm1 and pnm2 and the longitudinal sections fo...	06/04/1996
5465631	Shaft with a worm formed onto it, and milling machine for manufacturing a worm A system performing a conical transition from a shaft to the core diameter of a worm is disclosed. The disclosed system includes inserting a rough milling machine in an axial direction before a disk milling machine used for milling the worm. The rough mil...	11/14/1995
5408897	Worm, onto which a bearing stud is formed, especially for a windshield wiping system A bearing having to be assembled onto a shaft with a worm by passing over the worm where the diameter of the bearing section is larger than the outside diameter of the worm can be produced in a manner which saves material if not only the worm, but also th...	04/25/1995
5279174	Worm speed reducer, and manufacturing method for worm and worm wheel A worm speed reducer consisting of a worm made of a relatively hard material such as cast iron or steel and a worm wheel made of a relatively hard material such as cast iron. A material strength is set so that an amount of wear of the worm becomes larger ...	01/18/1994
5135810	Method of machining and structure of machined pinion gear A method for machining a part with gear teeth onto an unmachined part to form drive pinion gears is disclosed. A center bore is formed at one end of the part and receives a tool center to mount the part for machining. The center bore includes a plurality ...	08/04/1992
4754539	Method and extractor device for separating worm elements of an extruder from a worm shaft An extractor for removing worm elements which are fastened for rotation on the worm shaft of a worm extruder wherein a frame formed of longitudinal and cross members has a locking device in one of the cross members for holding the worm elements and an opp...	07/05/1988
4646554	Process for the manufacture of a rack A process for the manufacture of a rack, specially a rack having variable transmission, wherein the teeth of the rack have in the central area a profile different from that of the outer portions. The rack is formed from a blank in a press having an upper ...	03/03/1987
4641406	Method of forming a rack member A variable ratio rack has a linear array of teeth. The teeth in the linear array are disposed at a plurality of final tooth angles. In order to form the rack, a linear array of teeth is cut in a workpiece. The teeth in the linear array of cut teeth have a...	02/10/1987
4598451	Method of producing a rack from pipe material and a rack thus produced A pipe material is tightly clamped into a first pair of split forming dies to form a first formed tubular body which comprises a cylindrical wall part and a flat wall part, and then the first formed body is clamped tightly into a second pair of split form...	07/08/1986
4425815	Wormwheels A wormwheel (1) has teeth (2) over at least a portion of its periphery. The teeth (2) are shaped such that the pitch diameter (5) is greater at one face (3) of the wormwheel than the other and does not increase along the path of the tooth from said one fa...	01/17/1984
4131031	Anti-backlash nut assembly An anti-backlash nut assembly is disclosed of the type which undergoes translational movement along a screw in response to relative rotational movement between the nut and screw. The assembly includes a nut which is axially-split into first and second por...	12/26/1978

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Class 29/893.31 - Worm gear