Strain wave gearing, frictional engagement wave device, and wave generator
Granted: August 28, 2018
Patent Number:
10060517
An externally toothed gear of a strain wave gearing is made to flex into a shape conforming to an ellipsoidal curve. The externally toothed gear meshes with an internally toothed gear at the major-diameter position of the ellipsoidal curve. These two meshing positions gradually change in the circumferential direction of the both gears along the tooth trace direction. The number of external teeth of the externally toothed gear participating in meshing with the internally toothed gear can…
Virtual converged cable access platform (CCAP) core
Granted: July 10, 2018
Patent Number:
10020962
Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more core servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing…
Bearing holder, bearing mechanism, and strain wave gearing device
Granted: June 26, 2018
Patent Number:
10006534
In this hollow strain wave gearing unit, a shaft end part of a hollow rotary shaft of a wave generator is located inside a cup-shaped flexible external gear. The shaft end part is supported by a bearing attached to a bearing holder that is fixed to a boss of the flexible external gear. In the bearing holder, an elastic leaf spring part that is displaceable in the axial direction constitutes a part that supports a holder body part that holds the bearing. A preload is applied by the leaf…
Fastening structure for fastening driven member to strain wave gearing device unit, and strain wave gearing device unit
Granted: June 5, 2018
Patent Number:
9989141
A press plate is tacked to a boss of a cup-shaped flexible externally toothed gear of a wave gear device unit. A second arm as a driven member is attached by a fastening bolt to an end surface on an outer side of an output flange of the wave gear device unit. The fastening bolt is screwed into and secured in a tap hole of the press plate from each bolt insertion hole of the second arm, via a flange-side bolt insertion hole and a boss-side bolt insertion hole. A fastening structure can be…
Video encoding using adaptive pre-filtering
Granted: April 24, 2018
Patent Number:
9955160
Approaches for digital video encoding based, at least in part, on adaptive pre-filtering of the digital video. A user may select values for a plurality of video quality preference categories. An adaptive video preprocessor determines adaptive preprocessor information for the digital video, based, at least in part, on the current video complexity of the digital video and an output bit rate. The encoder encodes the digital video to produce encoded digital video using the adaptive…
Network personal video recorder utilizing personal digital storage
Granted: March 27, 2018
Patent Number:
9930391
Approaches for operating a network personal video recorder operated by a content provider. The network personal video recorder may be located at a head-end of a digital content provider. A network personal video recorder receives, from a user, authentication credentials that provide the network personal video recorder access, via the Internet, to a storage medium belonging to or associated with the user. After the user instructs the network personal video recorder to record a video…
Strain wave gearing having continuous-contact tooth profile formed using arcuate tooth profile
Granted: February 27, 2018
Patent Number:
9903459
A strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear disposed coaxially within the internally toothed gear, and a wave generator fitted within the externally toothed gear. The internally toothed gear and the externally toothed gear are spur gears having module m; and the number of teeth of the externally toothed gear is 2n less than the number of teeth of the internally toothed gear, where n is a positive integer. Taking a transverse…
Planetary gear drive
Granted: February 20, 2018
Patent Number:
9897195
A planetary gear drive has needle roller bearings of full roller type as planetary gear bearings for planetary gears. The needle roller bearings have lubrication mechanisms, respectively. Each lubrication mechanism has an annular grease retaining groove. The grease retaining groove is formed on an inner peripheral surface (an outer-race-side raceway surface) of the shaft hole of each planetary gear. Poor lubrication can be prevented from occurring when needle roller bearings of full…
Rotation actuator
Granted: January 30, 2018
Patent Number:
9882450
A rotation actuator is equipped with a motor and a reduction gear disposed adjacent to each other. Both shaft end portions of a rotating shaft, which passes through the center of the motor and reducer, are rotatably supported through first and second rolling bearings by first and second fixed discs that are mutually fastened and fixed. A rotation output plate is supported through a third rolling bearing in the outer peripheral surface of the second fixed disc. A sliding ring is mounted…
Method of manufacturing a flexible externally toothed gear for strain wave gearing
Granted: January 23, 2018
Patent Number:
9874273
A method for manufacturing a flexible externally toothed gear includes: a first step (ST1) for producing a primary molded article by performing near-net-shape plastic working on a material comprising a nickel-free low-alloy steel having a silicon content of 1.45-1.5 wt %; a second step (ST2) for martempering the primary molded article; a third step (ST3) for producing a secondary molded article from the primary molded article; and a fourth step (ST4) for shot-peening the secondary molded…
Linear DC motor
Granted: October 24, 2017
Patent Number:
9800128
A linear DC motor having first and second drive coils and first and second drive magnets arranged in a symmetrical state in relation to a motor central axis that passes through a sliding member in which a lens is mounted. The first and second coils on a moveable side are positioned to both the left and right sides of the sliding member. The first and second drive coils are designed to be independent without being affected by the shape, size, arrangement position, and the like of the…
Strain wave gearing
Granted: October 24, 2017
Patent Number:
9797497
A flat strain wave gearing device equipped with: a first internal gear and a second internal gear; a flexible tubular external gear; and an elliptically shaped wave generator. In the direction of a central axis, the center of support of the external teeth by the wave generator is offset, by an offset amount of ? along the direction of the central axis, with respect to the tooth-width center of the external teeth of the external gear. By setting the offset direction and the offset amount…
Adaptive pre-filtering based on video complexity and output bit rate
Granted: October 10, 2017
Patent Number:
9787987
Approaches for dynamic pre-filtering of digital video based on video complexity and output bit rate. An adaptive video preprocessor determines a current video complexity of the digital video and an output bit rate. Thereafter, the adaptive video preprocessor dynamically updates the strength of one or more preprocessing filters based on the current video complexity and the output bit rate for the digital video. The adaptive video preprocessor may update the strength of a preprocessing…
Rotary actuator and strain wave gearing reduction drive unit
Granted: September 26, 2017
Patent Number:
9772021
A reduction drive-side mounting end face on a strain wave gearing reduction drive unit has a circular center hole, and a motor-side mounting end face on a motor has a circular projection. The strain wave gearing reduction drive unit and motor are coaxially mounted by the circular projection being fit into the circular center hole with a regulating ring therebetween. The regulating ring, which regulates the motion of a flexible external gear, can be easily mounted to the strain wave…
Hollow strain wave gearing and hollow actuator
Granted: September 26, 2017
Patent Number:
9772020
A cup-type hollow strain wave gearing of a hollow actuator has a seal part assembled inside a cup-shaped externally toothed gear. The seal part seals between a boss of the externally toothed gear and a plug of the wave generator so as to prevent lubricant from leaking from the side of the externally toothed gear into a hollow part. Since the seal part employs an oil seal and an O-ring, it is able to be constituted inexpensively and to surely prevent leakage of low-viscosity lubricant.
Clock recovery for video encoding/transcoding applications
Granted: September 19, 2017
Patent Number:
9769514
Approaches for clock synchronization in digital video environments. In an embodiment, an encoder/transcoder calculates a ratio between a system clock and a source clock. The source clock is used by a source device to encode or transcode digital video. The system clock is used by the encoder/transcoder. After the encoder/transcoder receives the digital video from the source device, the encoder/transcoder uses the calculated ratio to create a recovered clock. The recovered clock is locked…
Smart small form-factor (SFP) pluggable transceiver
Granted: September 19, 2017
Patent Number:
9769500
Approaches for processing video in a smart small form-factor pluggable (SFP) transceiver. The smart SFP transceiver may dynamically assess characteristics of its environment, such as link bandwidth or video attributes. Thereafter, the smart SFP transceiver dynamically selects, from a plurality of codecs available to the smart SFP transceiver, an appropriate codec for use in processing the video prior to the video being transmitted over a link. The selection of the codec may be based, at…
System and method for feedback based traffic management
Granted: August 29, 2017
Patent Number:
9749248
A communication system that may include a traffic management module and a communication interface module. The communication interface module is arranged to: estimate a status of multiple channels by utilizing hardware channel status estimators, generate filler packets in response to the status of the multiple channels; wherein the filler packets are associated with the multiple channels; send the filler packets to the traffic management module. The traffic management module is arranged…
Strain wave gearing having double-contact negative deflection tooth profile
Granted: August 29, 2017
Patent Number:
9746065
The addendum tooth profile of the inner teeth and outer teeth of a strain wave gearing is stipulated by a first and second similar curve obtained from the curve segment from an inflection point to a low point in a movement trajectory when the meshing of both teeth is approximated by rack meshing. The addendum tooth profile of the inner teeth is stipulated by a curve generated at the inner teeth in the process of the addendum profile of the outer teeth moving from the inflection point to…
Wave generator and strain wave gearing
Granted: July 18, 2017
Patent Number:
9709151
A wave generator of a strain wave gearing has a plug, a wave generator bearing mounted to an outer peripheral surface of the plug, an input shaft protruding from the center of the plug to a first side running along a center axis, and a bearing arrangement on which a support bearing supporting the input shaft is arranged. Relative to an outer ring end surface of the wave generator bearing that faces the first side, a center-side plug end surface of a plug end surface facing the same…
