STRAIN WAVE GEARING UNIT
Granted: October 8, 2015
Application Number:
20150285357
A strain wave gearing unit is provided with an internal gear, which surrounds the periphery of a cup-shaped external gear, and a bearing. An annular gap is formed between the inner ring of the bearing and the internal gear. The gap communicates with the sliding portions of the bearing and the section where the two gears mesh. An annular filter member made of non-woven fabric is fitted in the gap. Foreign matter such as abrasion powder, which is contained in lubricant that flows in the…
WAVE GENERATOR AND STRAIN WAVE GEARING
Granted: October 8, 2015
Application Number:
20150285356
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…
FLEXIBLE EXTERNALLY TOOTHED GEAR FOR STRAIN WAVE GEARING AND METHOD FOR MANUFACTURING SAME
Granted: August 27, 2015
Application Number:
20150240930
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…
SYSTEM AND METHOD FOR ROUTING AND UP-CONVERTING NARROWBAND CHANNELS
Granted: August 13, 2015
Application Number:
20150229508
A device that may include a router and may also include narrowband generators arranged to generate samples of narrowband channels, a digital up converter (DUC). The DUC may include multiple DUC inputs. Different DUC inputs are associated with different frequency ranges. The router may include multiple router inputs, multiple router outputs and a routing circuit. The multiple router outputs are coupled to the multiple DUC inputs. The multiple router inputs are coupled to the narrowband…
LINEAR DC MOTOR
Granted: August 13, 2015
Application Number:
20150229196
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…
HOLLOW STRAIN WAVE GEARING
Granted: August 13, 2015
Application Number:
20150226302
A first shaft end of a hollow shaft of a hollow strain wave gearing is supported by a first support bearing with a collar interposed therebetween which is mounted to the outer-circumferential surface of the first shaft end. A second shaft end on the other end of the hollow shaft is supported by a second support bearing. A wave plug of a wave generator is integrally formed with the hollow shaft, and a wave bearing is mounted on the elliptical outer-circumferential surface thereof from the…
OBTAINING INTERNET PROTOCOL SUBNET SCOPE
Granted: August 6, 2015
Application Number:
20150222521
A method for obtaining and utilizing internet protocol (IP) subnet information, the method may include obtaining by a layer two cable modem termination system (L2 CMTS) information about IP subnets that comprise DHCP leased IP addresses assigned to devices serviced by the L2 CMTS; and maintaining, by the L2 CMTS and based on the information about the IP subnets, a data structure that reflects the IP subnets that comprise the IP addresses that are allocated to the devices serviced by the…
WAVE GENERATOR AND STRAIN WAVE GEARING
Granted: August 6, 2015
Application Number:
20150219200
A wave generator (5) for a flat-type strain wave gearing (1) has a first elliptical outer circumferential surface (6S) of a first wave generator portion (5S) defined by a first elliptical curve (C1), and a second elliptical outer circumferential surface (6D) of a second wave generator section (5D) defined by a second elliptical curve (C2). Compared to using a wave generator for which the contour is defined by a single elliptical curve, differences between the ball load distribution of…
SYSTEM AND METHOD FOR FEEDBACK BASED TRAFFIC MANAGEMENT
Granted: July 30, 2015
Application Number:
20150215212
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…
WAVE GEAR DEVICE AND FLEXIBLE INTERNALLY TOOTHED GEAR
Granted: June 18, 2015
Application Number:
20150167814
In a wave gear device, an annular rigid externally toothed gear is disposed on the inner side of a cup-shaped flexible internally toothed gear. An internal-tooth-formation portion of the flexible internally toothed gear and a pushed portion pushed by a wave generator and flexed ellipsoidally are formed in different positions along the center axis line. The wave generator is disposed on the inner side of the flexible internally toothed gear, the pushed cylindrical portion is pushed from…
RIGID COUPLING
Granted: May 14, 2015
Application Number:
20150132047
A slotted rigid coupling is configured in such a manner that an inner peripheral surface portion of a shaft hole, the inner peripheral surface portion being located within the slit-equipped fastening section of the coupling body, has an inner diameter d. The inner diameter d of an inner peripheral surface portion of the shaft hole, the inner peripheral surface portion being adjacent to the inner peripheral surface portion, is slightly larger than the inner diameter d. The inner…
DIGITAL UP CONVERTER
Granted: April 2, 2015
Application Number:
20150092870
A method that includes providing to multiple inverse fast Fourier transform (IFFT) and polyphase circuits multiple baseband channels so that different IFFT and polyphase circuits receive different sets of baseband channels; applying IFFT operations and the polyphase filtering operations by the multiple IFFT and polyphase circuits to provide multiple converted channels; wherein different IFFT and polyphase circuits output different sets of converted channels that at least partially…
SYSTEM FOR SWITCHING BETWEEN POWER SUPPLY UNITS
Granted: March 5, 2015
Application Number:
20150061396
A system for switching between first and second voltage supply units, the system may include a first interface unit that is connected between a first voltage supply unit and an output unit, a second interface unit that is connected between a second voltage supply unit and the output unit; a controller that is arranged to select a selected voltage supply unit and to instruct the first and second interface units and the output unit to facilitate a provision of a selected supply voltage…
GAP MEASUREMENT DEVICE
Granted: November 27, 2014
Application Number:
20140347679
A gap measurement device 1 comprises a light source 5 for projecting light on a gap 3 to be measured, a lens optical system 6 for focusing on an imaging surface 7 a gap image 3A from light transmitted through the gap 3, and a light-receiving element 9 for receiving light of the gap image 3A formed on the imaging surface 7 of the lens optical system 6. A holed mask 8 provided with a light-transmitting hole 8a having a prescribed aperture size is arranged on the imaging surface 7, and the…
STRAIN WAVE GEARING WITH INVOLUTE POSITIVE DEFLECTION TOOTH PROFILE TAKING RIM THICKNESS INTO CONSIDERATION
Granted: November 27, 2014
Application Number:
20140345406
In the strain wave gearing, an involute positive deflection tooth profile of a low pressure angle of less than 20° is used as the basic tooth profile for the rigid internal spur gear and the flexible external spur gear in order to increase the effective tooth depth. Continuous meshing of the two gears in the tooth trace direction is made possible by shifting the external teeth so that the linear parts of the rack tooth profiles coincide when viewed along the tooth trace direction. The…
WAVE GEAR DEVICE AND HOLLOW ROTATING ACTUATOR
Granted: September 25, 2014
Application Number:
20140283638
In a wave gear device, the inner race and the boss are fixed together by a laser welded part formed along the entire periphery thereof. The laser welded part also functions as an oil seal for sealing the inner race and the boss. The boss and the inner race are fixed together in a manner that a required axial length is short, and that machining and assembling steps are reduced. Oil seal members are not required to seal the boss and the inner race.
VIBRATION POWER-GENERATING STRAIN WAVE GEARING
Granted: August 7, 2014
Application Number:
20140217855
The strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear that is disposed coaxially therein and is flexible in the radial direction, and a wave generator that is disposed coaxially inside the externally toothed gear. The flexible externally toothed gear is bent in the radial direction by the wave generator and meshes with the rigid internally toothed gear in sections. When the position of meshing of the rigid internally toothed gear with the…
POSITIONING CONTROL SYSTEM FOR ACTUATOR PROVIDED WITH WAVE GEAR DEVICE
Granted: July 24, 2014
Application Number:
20140203752
A positioning control system for an actuator provided with a strain wave gearing is provided with: a semi-closed feedback controller FB(s) that controls a load shaft position ?l on the basis of a feedback motor shaft position ?m; and a feedforward linearization compensator configured by incorporating a nonlinear plant model for an object to be controlled into a feedback linearization compensator using an exact linearization technique. The feedforward linearization compensator uses a…
WAVE GEAR DEVICE
Granted: July 10, 2014
Application Number:
20140190298
The interior space of a cup-shaped flexible externally toothed gear of a cup-type wave gear device is divided into a front interior space and a rear interior space by a partition mechanism. A lubricant is filled in the front interior space at the side of a wave generator, to which lubrication is required. The volume of the front interior space is set so that a necessary amount of lubricant is filled. Since the lubricant is not necessary to fill in the entire interior space of the…
FLEXIBLE EXTERNALLY TOOTHED GEAR FOR WAVE GEAR DEVICE
Granted: June 19, 2014
Application Number:
20140165758
A cup-shaped flexible externally toothed gear of a wave gear device, wherein a diaphragm plate slopes from a diaphragm internal peripheral edge portion contiguous to a boss part toward a diaphragm external peripheral edge portion contiguous to a cylindrical body portion in a direction in which the diaphragm external peripheral edge portion is at greater distance from an open end of the cylindrical body portion with respect to an orthogonal plane orthogonal to a central axis line of the…
