Wave gear device
Granted: November 6, 2012
Patent Number:
8302507
A bending state known as “coning,” in which the amount of bending of the flexspline gradually decreases in accordance with the distance from the open end of the spline, occurs in cup-type or “silk hat”-type wave gear devices. A tooth profile in which the tooth depth is kept constant and in which the bottom lands and top lands are parallel to each other along the tooth trace direction is used as the basic tooth profile for the circular spline and the flexspline of the wave gear…
Method for compensating for angular transmission error of wave gear device
Granted: October 23, 2012
Patent Number:
8296089
A positioning system (1) provided with an actuator (2) having a wave gear device (4) is driven and controlled by a semi-closed loop control for controlling the load position of a load device (5) based on the motor position of a motor shaft (31) of a motor (3). In a method for compensating for an angular transmission error by compensating for a motor shaft synchronous component ?Sync that occurs in synchrony with the motor position and is a relative rotation-synchronous component that…
Robot hand and method for handling planar article
Granted: October 16, 2012
Patent Number:
8287017
When dishes are held by means of a robot hand (10), its fixed side engaging plate (13) and movable side engaging finger (14) are moved under horizontal state toward a dish (20) to be handled, and the outer circumferential edge side portion of the dish (20) is inserted between them. The distal end portion (14b) of the movable side engaging finger (14) is then bent by a predetermined amount to the side of the dish (20) and the robot hand (10) is raised. Consequently, the dish (20) is…
Wave gear device
Granted: October 9, 2012
Patent Number:
8281688
A wave gear device is proposed having an anti-ratcheting mechanism having a simple configuration, wherein a center through-hole is formed in a cylinder hub of a wave generator, a small-diameter shaft end portion of a rotating input shaft is concentrically inserted in the center through-hole, and the two members are fastened by a fastening bolt, and a friction ring is concentrically sandwiched between the small-diameter shaft end portion and the cylinder hub and pressed in the radial…
Crossed roller bearing retainer and crossed roller bearing
Granted: October 9, 2012
Patent Number:
8282286
A retainer of a crossed roller bearing has a retainer body plate of rectangular profile corresponding to a rectangular cross-section of a race. Rectangular side surfaces on either side of the retainer body plate are inclined planes that slant in a direction of approaching one another from one corner to another corner along a diagonal line of the surfaces, and extend towards a bearing center in a state of having been installed in the race. Recesses for accumulating grease are formed in…
Robot hand and finger mechanism
Granted: October 2, 2012
Patent Number:
8276957
A robot hand converts the longitudinal extending and retracting motion of an actuating rod of a linear actuator into opening and closing motion of left and right first links via a link mechanism. The link mechanism includes left and right middle links composed of coil springs. When the left and right first links come in contact with an object to be gripped, the middle links elastically deform and expand, and the force gripping the object gradually increases due to the elastic deformation…
Transcoding for a distributed file system
Granted: September 11, 2012
Patent Number:
8266182
A method for transcoding a file on a distributed file system is described. The distributed file system stores portions of the file across a plurality of distinct physical storage locations. A request to transcode the file is received. The file is transcoded from a first format to a second format using a processing unit of at least one of the physical storage locations.
One-pot synthesis of chalcopyrite-based semi-conductor nanoparticles
Granted: July 31, 2012
Patent Number:
8231848
Ternary and quaternary Chalcopyrite CuInxGa1-xSySe2-y (CIGS, where 0?x and y?1) nanoparticles were synthesized from molecular single source precursors (SSPs) by a one-pot reaction in a high boiling solvent using salt(s) (i.e. NaCl as by-product) as heat transfer agent via conventional convective heating method. The nanoparticles sizes were 1.8 nm to 5.2 nm as reaction temperatures were varied from 150° C. to 190° C. with very high-yield. Tunable nanoparticle size is achieved through…
Rotational position detecting method for AC servomotor and simple encoder
Granted: July 31, 2012
Patent Number:
8232757
A motor rotational position detecting method detects the magnetic pole position of each phase of a three-phase AC servomotor, generates a three-phase square wave signal having a phase difference of 120 degrees, allocates data on the rotational position of a motor shaft to the edge of each square wave signal, calculates the rotational speed of the motor on the basis of the elapsed time from the previous edge detection point to this time edge detection point, and estimates the rotational…
System and method for adaptive video compression motion compensation
Granted: July 24, 2012
Patent Number:
8228991
Methods and systems for video coding are provided. A method includes receiving a digital video stream. The digital video stream includes multiple sequential independent frames. The method further includes storing a first frame of the digital video stream. The method also includes encoding a second frame of the digital video stream using motion compensation with the stored first frame as a reference.
Wave gear device
Granted: July 10, 2012
Patent Number:
8215205
In a cup-type or “silk hat”-type wave gear device (1), the rim thickness t of the flexible externally toothed gear (3) thereof satisfies the relations (0.5237Ln(R)?1.32)d?t?(0.8728Ln(R)?2.2)d if the reduction ratio R of the wave gear device is less than 80, and (1.5499Ln(R)?5.8099)d?t?(2.5832Ln(R)?9.6832)d if the reduction ratio R is equal to or greater than 80, where d is the radial deflection, measured at the position of the major axis of the neutral circle of the rim, in a state…
Wave-gear-type linear-actuation mechanism
Granted: June 5, 2012
Patent Number:
8191439
A wave-gear-type linear-actuation mechanism comprises a flat-type wave gear; a lead screw that is a structural component of the wave gear and is formed on an outer peripheral surface of a first circular spline; and a linear-actuation cylinder threaded onto the lead screw, a linear-actuation cylinder 4 having a screw groove that is formed in an inner peripheral surface thereof. It is possible to obtain a linear-actuation mechanism whose holding force during reverse input mode (speed…
Robot hand and finger mechanism
Granted: May 1, 2012
Patent Number:
8167345
A robot hand converts the longitudinal extending and retracting motion of an actuating rod of a linear actuator into opening and closing motion of left and right first links via a link mechanism. The link mechanism includes left and right middle links composed of coil springs. When the left and right first links come in contact with an object to be gripped, the middle links elastically deform and expand, and the force gripping the object gradually increases due to the elastic deformation…
H.264/AVC based approach to scalable video compression
Granted: May 1, 2012
Patent Number:
8170121
A scalable video compression method and apparatus for encoding an input frame sequence having temporally sequential frames includes partitioning each of the frames of the input frame sequence into a top field and a bottom field to form a base layer sequence of fields and an enhancement layer sequence of fields. The base layer sequence and the enhancement layer sequence each comprise temporally alternating top and bottom fields of the partitioned frames of the input frame sequence. The…
Apparatus for detecting position of rotation of motor
Granted: April 17, 2012
Patent Number:
8159096
A magnetic absolute sensor for a geared motor comprises a dipole magnet and hall elements. The dipole magnet is fixed to a hollow portion of a hollow rotor shaft. A bracket attached to an end plate of a motor housing is coaxially inserted from the rear end side of the hollow portion. The dipole magnet is inserted from the front side in a cylindrical portion of the bracket. The hall elements are arranged at an interval of 90 degree on the circular inner periphery surface of the…
Expanding coupling means for powered window covering
Granted: March 27, 2012
Patent Number:
8141614
An actuator to be inserted in a headrail of a window covering, the actuator comprises a damping body configured to reduce vibrations when the actuator is operating, and an expanding mechanism configured to expand the damping body against the headrail.
Self-propelled wheel apparatus of aircraft
Granted: March 20, 2012
Patent Number:
8136761
In a self-propelled wheel apparatus of an aircraft, a drive mechanism composed of a wave gear drive and a motor is coaxially linked to an axle of a wheel via a one-way clutch, and rotational force in the reverse direction of the aircraft is transmitted to the wheel axle via the one-way clutch. When the aircraft moves forward, the link between the wheel axle and an output shaft of the wave gear drive is cut off by the one-way clutch, and motor rotational force is transmitted to the wheel…
Motor with cutting tool mounting hole
Granted: March 20, 2012
Patent Number:
8136817
A tool holder plate (51) is fixed to a shaft end part (413) of a hollow motor shaft (41) of a brushless DC servo motor (1), and a cutting tool is mounted in a tool mounting hole (51a) formed in the tool holder plate (51) and a work is cut-processed by this cutting tool. In order to prevent intrusion of a cutting processing oil containing cutting powder into the inside of the motor from between the shaft end part (411) of the hollow motor shaft (41) and an end plate portion (22) of a…
Apparatus and method for soft tissue ablation employing high power diode-pumped laser
Granted: March 20, 2012
Patent Number:
8137340
The present invention discloses a high power diode-pumped laser for laser ablation of soft tissue. The present invention contemplates to operate the high power diode-pumped solid-state laser at a continuous Q-switching mode and at a big number of transverse modes. The present invention also contemplates to reduce beam divergence and beam spot size and thus to increase power density of the laser on target tissue to improve the speed of tissue ablation. The present invention further…
AVC to SVC transcoder
Granted: February 21, 2012
Patent Number:
8121191
Roughly described, an input unencoded video stream is first encoded according to a high quality compression standard such as 1080P@60 AVC. The high quality compressed video stream is then transcoded into a scalable format, such as 1080P@60 SVC. Developing the scalable video stream by transcoding offers significant benefits over developing it natively from the original uncompressed picture sequence.
