Class / Patent application number | Description | Number of patent applications / Date published |
475180000 | Particular gear tooth | 10 |
20100004087 | POWER TRANSMISSION DEVICE AND METHOD OF PRODUCING THE SAME - The power transmission device has an internally meshing planetary gear mechanism that has an input shaft, an eccentric body provided on the input shaft, an externally toothed gear eccentrically oscillating via the eccentric body, and an internally toothed gear with which the externally toothed gear internally meshes. The externally toothed gear is assembled to the internally toothed gear in an interference fit. | 01-07-2010 |
20100113206 | ECCENTRIC OSCILLATING TYPE SPEED REDUCER AND APPARATUS FOR ROTATING STABILIZER SHAFT USING THE ECCENTRIC OSCILLATING TYPE SPEED REDUCER - The present invention reduces the manufacturing cost of an eccentric oscillating type speed reducer | 05-06-2010 |
20110237382 | WAVE GEAR DEVICE HAVING THREE-DIMENSIONALLY CONTACTABLE SHIFTED TOOTH PROFILE - Disclosed is a wave gear device ( | 09-29-2011 |
20120108381 | ECCENTRIC OSCILLATING GEAR DEVICE AND ASSEMBLING METHOD FOR CRANKSHAFT IN ECCENTRIC OSCILLATING GEAR DEVICE - An eccentric oscillating gear device comprises a crankshaft having an eccentric portion, an externally toothed gear having external teeth and a through-hole in which the eccentric portion is inserted, an outer cylinder, and a carrier. The carrier rotatably supports the crankshaft. The outer cylinder has internal teeth meshed with the external teeth of the externally toothed gear. The eccentric oscillating gear device is provided with rotational phase adjusting section for setting an orientation of the crankshaft about an axis thereof, on the basis of orientations of the outer cylinder and the carrier about an axis thereof. | 05-03-2012 |
20130059693 | High Efficient and High Power Plane Centric Gear Unit - A plane centric gear unit has a circumferentially floating ring gear | 03-07-2013 |
20130316868 | WAVE GENERATOR OF WAVE GEAR DEVICE - An externally toothed portion of a cup-shaped flexible externally toothed gear of a wave gear device is flexed into an ellipsoidal shape by a six-roller-type wave generator. A region of an inner peripheral surface of the ellipsoidally flexed externally toothed portion that is positioned on a major axis of the ellipsoidal shape is maximally inclined. First rollers of the wave generator are arranged so that the incline is identical to the incline of the region of the inner peripheral surface. A circular outer peripheral surface of the first rollers can be brought into contact with the region of the inner peripheral surface in an external-tooth tooth-trace direction without deflection; therefore, the angular transmission precision of the wave gear device can be improved. | 11-28-2013 |
20150354667 | MODIFIED PARALLEL ECCENTRIC ROTARY ACTUATOR - A rotary actuator is provided which includes a crankshaft, a first eccentric gear disposed on a first end of the crankshaft, a second eccentric gear disposed on a second end of the crankshaft, first and second end plates, a first crosslink disposed between the first eccentric gear and the first end plate, and a second crosslink disposed between the second eccentric gear and the second end plate. The first crosslink has a first set of surface features on a surface thereof which engage a second set of surface features on the first eccentric gear, and at least one of the first and second eccentric gears is equipped with circular arc gear teeth. | 12-10-2015 |
20160076623 | WOBBLE REMOVAL SHAFT COUPLING AND HYPOCYCLOID REDUCTION GEAR DEVICE USING SAME - In a wobble removal shaft coupling device including a wobble removal gear having an internal gear with a first central axial line and an external gear meshing with the wobble removal gear and having a second central axial line. The first and second central axial lines are in parallel with and offset from each other, and the external gear teeth are identical in number to the internal gear teeth of the wobble removal gear. At least one of the two sets of the gear teeth are resiliently deformable in a circumferential and/or radial direction so as to allow the two gears to be meshing with each other while permitting an eccentric wobbling movement of the external gear relative to the internal gear without requiring a play or a sliding engagement. The wobble removal shaft coupling device can be incorporated in a hypocycloid reduction gear device. | 03-17-2016 |
20160084348 | PLANETARY GEAR TRAIN OF INTERNAL ENGAGEMENT TYPE - Each of gear teeth of an external gear has a tooth-bottom portion, a tooth-middle portion and a tooth-front portion. The tooth-middle portion is operatively engaged with an internal gear. A cross-sectional shape of the tooth-bottom portion is formed by a hypocycloid curved line. A cross-sectional shape of the tooth-middle portion is formed by an epicycloid curved line. A cross-sectional shape of the tooth-front portion is formed by a first predetermined curved line, which is located at a position closer to a first pitch circle of the external gear in a radial-inward direction from a reference epicycloid curved line. The reference epicycloid curved line is continuously connected to each of the curved lines of the tooth-middle portion at both circumferential sides of each gear tooth. As a result, the tooth-front portion is so formed that a part of the tooth-front portion is escaped in the radial-inward direction from the reference epicycloid curved line. | 03-24-2016 |
20220136588 | GEAR MECHANISM AND GEAR - A gear mechanism includes a gear including external teeth, the external teeth including a plurality of tooth parts defined by a cycloid curve, a plurality of contacting members disposed on an outer side and in a circumferential direction of the external teeth, the external teeth being brought into pressure contact with the plurality of contacting members, and a mechanism configured to eccentrically move the gear. A plurality of through holes penetrating the gear in a thickness direction of the gear are formed in the gear in the circumferential direction of the gear, the cycloid curve extends outward from an ideal cycloid curve without the external teeth interfering with the plurality of contacting members, the plurality of contacting members being in contact with the ideal cycloid curve. | 05-05-2022 |