SELF-PROPELLED WHEEL APPARATUS OF AIRCRAFT
Granted: March 18, 2010
Application Number:
20100065678
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…
DRILL BIT SHAFT STRUCTURE FOR EXCAVATION APPARATUS
Granted: March 18, 2010
Application Number:
20100065333
The drill bit shaft structure for an excavation apparatus has a thin-walled shaft portion formed on a hollow drill bit shaft. The thin-walled shaft portion has a thinner wall than that of shaft portions of the hollow drill bit shaft adjacent to both ends of the thin-walled shaft portion. A cylindrical body provided with an adjustable joining structure is disposed so as to envelop the thin-walled shaft portion. Both ends of the cylindrical body are connected to the shaft portions of the…
COMPOSITE WAVE GEAR DRIVE
Granted: December 31, 2009
Application Number:
20090320643
In a composite wave gear drive, a flexspline (having a number of teeth Nf) is disposed on the inner side of first and second circular splines (numbers of teeth Nc1 and Nc2, respectively). One side of the flexspline is bent into an elliptical shape by a first wave generator, the other side of the flexspline is bent into an elliptical shape by a second wave generator, and the flexspline meshes with the first and second circular splines The first wave generator is a rotational input…
WAVE-GEAR-TYPE LINEAR-ACTUATION MECHANISM
Granted: December 3, 2009
Application Number:
20090293659
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…
Dispersion Compensation Circuitry and System for Analog Video Transmission With Direct Modulated Laser
Granted: November 26, 2009
Application Number:
20090290880
An improved precompensation circuit includes a greatly improved differentiator in the dispersion precompensation path, a preprocessor in the dispersion precompensation path for reducing f2?f1 type Composite Second Order (CSO) distortion, and a broadband phase shifter for compensating undesired vector interaction between the laser predistortion and dispersion compensation.
METHOD FOR ADJUSTING GALVANO SCANNER SYSTEM
Granted: November 19, 2009
Application Number:
20090284815
In a galvano scanner system (1), a light position detection unit (30) is mounted so as to match the scanning center of the workpiece surface (7), the light position detection unit being provided with a two-dimensional light position sensor (32) disposed in the center and four one-dimensional light position sensors (33(1)) to (33(4)) concyclically disposed at equal angles about the center of the two-dimensional light position sensor. An origin position command is given to galvano scanners…
Deblocking algorithm for coded video
Granted: November 19, 2009
Application Number:
20090285308
Methods, systems and computer program products for providing a deblocking algorithm to one or more blocks in a picture are described. A filtered block may result for each deblocked block. Each filtered block may then be combined to generate a decoded deblocked picture. This process may subsequently be applied to a next picture in a group of pictures resulting in a deblocking of a coded video sequence.
FLEXSPLINE AND WAVE GEAR DEVICE
Granted: October 22, 2009
Application Number:
20090260469
In a flexspline of a wave gear device, an annular flange thereof is constructed from a first annular part bent at a right angle from an outer peripheral edge of a diaphragm, and a second annular part caused to inwardly protrude at a uniform width from a leading end of the first annular part. It is possible for the annular flange to be disposed within the region where the diaphragm is formed, as viewed in the direction of an axis of the device. An outer diameter can be reduced to a…
ROBOT HAND AND FINGER MECHANISM
Granted: October 22, 2009
Application Number:
20090261609
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…
Finger Joint Mechanism
Granted: October 8, 2009
Application Number:
20090249918
A finger joint mechanism (1) having two wave gear reduction drives (20, 30) disposed coaxially with each other, in which rotational force of a motor (40) is transmitted to a rotation input shaft (13) common to the drive gears through a driving bevel gear (42) and a driven bevel gear (43). Output shafts (11, 12) are formed integrally with bosses (24, 34) of the cup-like flexible external gears (22, 32) of the wave gear drives (20, 30), and mounting arms (9, 10) of a rotating member (3)…
MULTIPLE-ROTATION ABSOLUTE ENCODER
Granted: October 1, 2009
Application Number:
20090243599
A multiple-rotation absolute encoder attached to an actuator provided with a motor and a reduction gear comprises a multiple-rotation value counter for counting a multiple-rotation value representing a number of rotations of a rotating shaft of the motor from a predetermined origin; a memory part for storing a reduction ratio R of the reduction gear; and a counter-controlling part for setting a range of the count value of the multiple-rotation value counter from zero rotations to (R?1)…
SERVO MOTOR BRAKE DEVICE
Granted: September 3, 2009
Application Number:
20090218181
A small-sized, lightweight servo motor brake device (1) that has a low operation speed for releasing a brake during normal operation is provided, wherein compression coil springs (7) cause a slide plate (6) to be pressed against a brake disc (4) that is securely connected to a motor shaft (2), and a braking state is formed. When a small-sized motor (12) causes a cam disc (8) to rotate in a direction in which a cam follower (10) rolls up from a trough (9b) of a cam surface (9) to a peak…
FOUR WAVE MIXING SUPPRESSION
Granted: August 20, 2009
Application Number:
20090208223
Methods, systems and computer program products for countering the effects of four wave mixing are described. In one implementation, a controller can be used to shift an operating wavelength of an optical transmitter away from a zero-dispersion wavelength through which signals of the optical transmitter are transmitted. The controller can perform the shifting process while allowing sufficient margin for division multiplexing and minimal dispersion. The controller may determine an…
METHOD FOR COMPENSATING FOR ANGULAR TRANSMISSION ERROR OF AN ACTUATOR
Granted: August 13, 2009
Application Number:
20090200979
The non-linear elastic deformation component included in the angular transmission error of an actuator provided with a wave gear drive is a component of the angular transmission error occurring due to elastic deformation of a flexible externally-toothed gear when the direction of rotation of the motor shaft changes. This component can be analyzed by driving the motor in a sine-wave shape. A model of the non-linear elastic deformation component (non-linear model) obtained from the…
Methods and System for Data Transfer Over Hybrid Fiber Cable Infrastructure
Granted: August 6, 2009
Application Number:
20090199250
The invention is directed to a method comprising intercepting a download request, originally directed to an original destination, for content; processing the download request; searching for the content in a local cache; servicing the download request from the local cache if the content is found in the local cache; forwarding the download request to the original destination if the content is not found in the local cache; and notifying a server of the intercepted download request, wherein…
BROWSING AND VIEWING VIDEO ASSETS USING TV SET-TOP BOX
Granted: July 9, 2009
Application Number:
20090178089
Roughly described, a system and method for delivering video content to a user's client device in a video-on-demand (VOD) system, which includes providing a collection of video segments, the segments having a predefined default sequence; establishing a streaming video session according to a session-oriented protocol; transmitting toward the client device a script executable by the client device, the script operable to transmit navigational codes toward the head-end equipment in response…
Methods and System for Efficient Data Transfer Over Hybrid Fiber Coax Infrastructure
Granted: July 2, 2009
Application Number:
20090168649
The invention is directed to a method for providing client-server data transfer over a Hybrid Fiber Coax network, comprising interfacing, at a client, a channel, wherein the channel is one of a video channel and a DOCSIS channel, intercepting a content request made from an end-user computing device, notifying a server of a relevant intercepted message via one of using an interactive channel and tagging the request, selecting content sent by the server over the channel, processing the…
Methods and System for Efficient Data Transfer Over Hybrid Fiber Coax Infrastructure
Granted: July 2, 2009
Application Number:
20090172762
The invention is directed to a method for providing client-server data transfer over a Hybrid Fiber Coax network, comprising interfacing, at a client, a video channel, intercepting a content request made from an end-user computing device, notifying a server of a relevant intercepted message via one of using an interactive channel and tagging the request, selecting content sent by the server over the video channel, processing the content selected so as to return it to its IP traffic…
SEALED WORM GEAR TYPE FINGER JOINT UNIT
Granted: June 11, 2009
Application Number:
20090145254
A sealed worm gear type finger joint unit for a robot hand has a circular opening in a gear box case of the unit, and the opening is closed by a rubber bush. When the rubber bush is removed, a shaft end face of a worm shaft section is exposed from the circular opening, and this makes a tool engagement section formed on the shaft end face is accessible from the outside. A tool for turning the worm shaft section is fitted in the tool engagement section, and the worm shaft section can be…
Method For Setting Nonpositive Deflection, Maximum Meshable Tooth Profile In Flat Wave Gear Device
Granted: June 4, 2009
Application Number:
20090139357
In a flat wave gear device, there is determined a rack-approximated movement locus Lc1 of a flexible externally toothed gear with respect to an S-side rigid internally toothed gear accompanying rotation of a wave generator, ?OPT is a minimum value of the radius of curvature of the movement locus Lc1, and is determined from an evolute e of the movement locus Lc1. A convex arc having a radius ? (???OPT) is used in a main part of a tooth profile of the flexible externally toothed gear. A…
