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Class 475/168 - Gear teeth comprise rolling bodies


Subclass of Class 475 - Planetary gear transmission systems or components
Definition: Subject matter wherein surface contact between said first
No. of patents: 101
Last issue date: 04/24/2012


1      
NumberTitleIssue Date
8162790Rolling ball type two-stage low speed changer device
In a rolling ball type two-stage low speed changer device 1, empirical formulas are obtained as a relationship between number of first, second, third and fourth lobes z1, z2, z3, z4 of a hypo-based groove 6 (8) and an...
04/24/2012
7909722Structure of swing part of industrial robot
Surface abrasion in an eccentric part of a crank pin or breakdown of the crank pin of an eccentric oscillation speed reducer is effectively prevented. A value N obtained by dividing reduction ratio M in an eccentric oscillation speed reducer by a diameter D passing ...
03/22/2011
7901317Reduction gear
The reduction gear includes a plurality of first and second rollers that are disposed so as to directly come into rolling contact with the outer peripheries of first and second eccentric bodies; first and second retainers that maintain gaps between the first and sec...
03/08/2011
7837586Simultaneous multiple rotation interface
A simultaneous multiple rotation interface where a series of discs rotate about an eccentric camshaft. Each disc is engaged with the other by a series bearings embedded within each disc. As the camshaft rotates, each disc alternatively engages an outer shell so as t...
11/23/2010
7621838Transmission ratio varying mechanism
A transmission ratio varying mechanism is configured such that transmission of rotation between a first steering shaft and an eccentric rotary plate is performed via a first rotation transmitting ball group that engages with a third cycloidal groove and a first cycl...
11/24/2009
7614974Transmission for vehicle steering apparatus
A vehicle steering apparatus having a drive (101) which is coupled to a second shaft (2) with the longitudinal axis (8) via a disk cam mechanism, the disk cam mechanism comprising the following elements: at lea...
11/10/2009
7540819Simultaneous multiple rotation interface
A simultaneous multiple rotation interface where a series of discs rotate about an eccentric camshaft. Each disc is engaged with the other by a series bearings embedded within each disc. As the camshaft rotates, each disc alternatively engages an outer shell so as t...
06/02/2009
7410439Reducer
A reducer having an inner gearing planetary gear speed reduction mechanism is provided, which costs low and can be easily installed. A driving device is provided with a planetary gear speed reduction mechanism having an internal gear and an external gear which inter...
08/12/2008
7361119Needle bearing and speed reducer using the needle bearing
A radial inner end of a retainer is spaced radially outwardly from a radial outer end of a sliding-contact region, and with this construction the axial movement of each needle roller is limited not by the retainer but by an inner ring, and a restriction flange. Ther...
04/22/2008
7357746Eccentric gearbox
An eccentric gearbox with selectable large speed ratio, in this gearbox many eccentric gear (8, 12, 16) pairs are assembled in parallel, and are connected to a common input shaft (1) and a common output shaft (2). In every gear pair (8, 12, 1...
04/15/2008
7351177Series of gearboxes
A series of gear systems is disclosed, each of which comprises least one double-shaft, reversible planetary stage including a combination of an open positive gear system having lantern-gear teeth and an output system. “z1” represents the lantern-gear ...
04/01/2008
7326143Rotary actuator
A radial inner portion of a rotor core, where a rotor core and a rotor shaft are connected, has an electromagnetically excessive capacity. A recess is provided at the radial inner portion of the rotor core. The recess is a cylindrical bore retracting in the axial di...
02/05/2008
7303499Displacing device
A device for adjusting two parts (2, 3) relative to one another, other than for a displacing device which is provided displacing a camshaft. The adjusting device is smooth and easy to operate, is self-locking, and ensures a backlash-free, continuous displacem...
12/04/2007
7264567Wedge loading mechanism for traction drives
A wedge loading mechanism for an eccentric planetary traction drive in which a roller having a flexibly mounted shaft is positioned between two raceways forming a convergent wedge. Rotation of either of the two raceways wedges the roller within the convergent wedge ...
09/04/2007
7258642Simultaneous multiple rotation interface
A simultaneous multiple rotation interface where a series of discs rotate about an eccentric camshaft. Each disc is engaged with the other by a series bearings embedded within each disc. As the camshaft rotates, each disc alternatively engages an outer shell so as t...
08/21/2007
7247116Planetary motor
A motor suitable for use in a medical imaging environment has (a) a cylindrical outer gear having a bore with a centerline and an internal surface with circumferentially distributed and radially directed teeth, (b) a means for mounting this outer gear such that it i...
07/24/2007
7216845Valve actuator
A highly efficient apparatus for actuating a valve. An input mechanism drives the apparatus through an input member. Torque is increased as a plurality of driver discs eccentrically rotate about a central shaft member and engage an output member via low-friction, ro...
05/15/2007
7153230Eccentric planetary traction drive transmission with flexible roller for adaptive self-loading mechanism
An eccentric planetary traction drive transmission which includes at least two planetary rollers, sun roller member, and a carrier member. One of the planetary rollers is flexible and is positioned between and in contact with an outer ring member and the sun roller ...
12/26/2006
7147582Power transmission device
It is an object to obtain a power transmission device capable of allowing conflicting needs to coexist rationally and effectively in accordance with a driving situation. As powertransmitting mechanisms of a power transmission device, there are provided a plurality o...
12/12/2006
7086304Roller cam assembly
A transmission comprises a pair of drive shafts, one an input shaft and the other an output shaft, wherein one of said shafts is attached to a toothed cam having a trochoidal profile and the other drive shaft is attached to a roller ring having a plurality of cylind...
08/08/2006
7086309Planetary-harmonic motor
A motor suitable for use in a medical imaging environment has (a) a centrally located means for actuating a radial wave, (b) a deformable flexspline having an inner surface and a toothed outer surface with a first specified number of teeth, and (c) a circular spline...
08/08/2006
7081062Standardized rotary actuator
A rotary actuator incorporating a shell, an output plate and a cross-roller bearing retaining the output plate within the shell. A prime mover, disposed within the shell, exerts torque on a gear train within the shell. A pair of gears, disposed on either side of the...
07/25/2006
7070533Internal teeth oscillation type inner gearing planetary gear system
An internal teeth oscillating inner gearing planetary gear system, wherein installation space for piping, wiring, etc. can be easily secured in the central portion of the system according to a particular application. The gear system is configured such that rotation ...
07/04/2006
6968756Multi-speed ratio apparatus to control shaft output
A multi-speed ratio apparatus to control output for use, but not limited to, either as a module connected to a transmission or as a stand alone transmission. The multi-speed ratio apparatus is connected to a driving member (such as, for example, an engine, motor, or...
11/29/2005
6948402Rotary work table with cycloidal drive gear system
A rotary table or turntable includes a work supporting platform with a driven pin carrier attached thereto. The pin carrier includes a circular array of pins engaged with a driven cycloidal gear. The cycloidal gear is driven by a prime mover, such as a servomotor, a...
09/27/2005
6918572Valve drive unit and series thereof
A series of electric valve drive units is provided, which can set up rotational efficiency and anti-counter-rotating function of a valve. In a series of electric valve drive units which can drive a valve body via reduction gears, at least one gear mechanism of the r...
07/19/2005
6902507Roller cam assembly
A two-stage epicyclic roller cam transmission comprising in each stage: a roller ring having a plurality of fixed-position rollers; and a cam gear having pitch-circle-generated, trochoid-shaped teeth and independent pitch, wherein the rollers are spaced to mesh with...
06/07/2005
6428028Wheel transmission for mobility vehicle
A wheel transmission for mobility vehicle includes an input component capable movement at a first rate of motion for selectively driving an output component at either the first rate of motion or a second rate of motion. Operably connected between the inpu...
08/06/2002
6416438Transmitting unit
A transmitting unit which uses bearings and the eccentric principle to reduce or increase the rotational speed. An eccentric portion is integrally formed with an input shaft, and a bearing is assembled along the outer periphery of the eccentric portion. T...
07/09/2002
6314826Nested speed converter bearing apparatus
Robust nested speed converter and bearing apparatus providing speed conversion function and bearing support function in a compact package for a range of applications....
11/13/2001
6176801Locking device of electric tool shaft
A locking and slowing down device includes a central hole and a recess part, which are connected with each other. The central hole is inserted with an output shaft so that the spline shaft at one end of the output shaft extends into the recess part. The l...
01/23/2001
5989144Oscillatory roller transmission
A transmission apparatus comprising a wave actuator having a wave-actuating disk mounted on an eccentric body through a rolling bearing; an oscillatory roller gear having Zh number of oscillatory rollers assembled in Zh radial slots of an oscillatory roll...
11/23/1999
5954609Epicyclic gear system with line contact roller bearings
The invention relates to a gear system, particularly an epicyclic gear system, with a basic member (40) with at least one rotatably mounted output member (50), and with an annular running space (1), formed in the bearing region of the output member (50), ...
09/21/1999
5908372Gear system
The invention relates to a gear system with at least one wheel (40) with an internal toothing (41), with at least one output member (50) mounted to rotate with respect to the wheel (40), and with an input shaft (10) with at least one eccentric portion (17...
06/01/1999
5876298Speed reduction device having overrunning clutch
A speed reduction device including an overrunning clutch has a drive shaft having an eccentric ring and an inner gear plate disposed to be rotatable relative to the eccentric ring. The gear plate has a plurality of teeth and engagement holes. The device f...
03/02/1999
5707310Internal planetary gear device
An internal planetary gear device having an input shaft, an eccentric body rotating with the rotation of the input shaft, an external gear eccentrically rotatably mounted on the eccentric body through a bearing, an internal gear internally meshing with th...
01/13/1998
5695425Outer tooth profile of planetary gear apparatus
A planetary gear apparatus comprising an inner tooth gear having an inner peripheral portion formed with a plurality of inner teeth each in the form of a semi-circular cross-section shape and an outer tooth gear positioned within the inner tooth gear and ...
12/09/1997
5683323Ball-rolling type torque transmission device
In a ball-rolling type torque transmission device, an outer race groove an inner race groove are provided between the eccentric rotation disc and the input shaft, the output shaft or a first stationary member within the housing, the outer race groove bein...
11/04/1997
5643128Harmonic drive using guided, floating cam driven cylinders as power transmitting elements
A device for rotating a first structure relative to a second structure has a rotatable shaft for attachment to the first structure. A first cylinder is coaxially attached to the rotatable shaft, and has a plurality of bearing constraining apertures for ho...
07/01/1997
5609539Transmission means for transmitting a rotary movement
The invention relates to a transmission means for transmitting a rotary movement, having a driven toothed wheel (1) provided with an internal toothing (2), which engages with an external toothing (12) of a driving toothed wheel (11). The internal toothing...
03/11/1997
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