Patent application number | Description | Published |
20120263056 | APPARATUS, METHODS, AND ARTICLES OF MANUFACTURE FOR WIRELESS COMMUNICATIONS - Selected embodiments are directed to methods, apparatus, and articles of manufacture for wireless radio frequency communications. Adjacent antenna array elements of a receiver antenna array are separated by less than the diffraction limit of the radio frequency communication band in which the apparatus and methods operate. A plurality or multiplicity of near-field scatterers are asymmetrically placed in the immediate vicinity of each of the antenna array elements, to perturb the pattern of each of the antenna elements, making the patterns different even below diffraction limit spacing. A transmitter spatially and temporally focuses simultaneous transmissions on each of the antenna array elements, using time reversal communication techniques. The transmitter may transmit through multiple antenna elements, and the channel from the transmitter to the receiver may be subject to multipath phenomena. | 10-18-2012 |
20120328037 | ANTI-GEOLOCATION - Methods, apparatus, and articles of manufacture make Geolocation of a source transmitter more difficult or impossible. Scatterers common to a source transmitter and an intended receiver are identified using a variety of techniques, such as iterative time reversal (ITR) and Singular Value Decomposition (SVD) of a scatter matrix. The source transmitter then uses time reversal and knowledge of the signatures of the scatterers to focus its transmissions on one or more of the scatterers, instead of the intended receiver. The source transmitter may have multiple antennas or antenna elements. The source transmitter and/or the intended receiver may include antenna elements with Near-Field Scatterers to enable spatial focusing below the diffraction limit at the frequencies of interest. The source transmitter may be a plurality of ad hoc nodes cooperating with each other. | 12-27-2012 |
20140126567 | DISTRIBUTED CO-OPERATING NODES USING TIME REVERSAL - Methods and systems for coherent distributed communication techniques using time reversal are disclosed. In one aspect, cooperating nodes of a cluster can move relative to each other and relative to an intended receiver of the nodes' data transmissions. The nodes are synchronized to a common time reference, and data for transmission from the cluster is distributed to the nodes. The intended receiver sends a sounding signal to the nodes. Each node receives the sounding signal, obtains the channel response between the intended receiver and itself, and time-reverses the channel response. Each node then convolves its time-reversed channel response with the data to obtain the node's convolved data Each node waits a predetermined time following the time reference signal, as determined based on the common time reference. At the expiration of the predetermined time period, the nodes simultaneously transmit their convolved data | 05-08-2014 |
20140301494 | DISTRIBUTED CO-OPERATING NODES USING TIME REVERSAL - Dynamic, untethered array nodes are frequency, phase, and time aligned, and used to focus their transmissions of the same data coherently on a target, using time reversal. Alignment may be achieved separately for the radio frequency (RF) carriers and the data envelopes. Carrier alignment may be by phase conjugation. The data is distributed across the nodes. Data distribution and/or alignment may be performed by a Master node of the array. The nodes capture a sounding signal from the target, in the same time window. Each node converts the captured sounding signal to baseband, for example, using in-phase/quadrature downconversion. Each node stores the baseband samples of the sounding pulse. Each node convolves time-reversed samples of the sounding signal with the data, and upconverts the convolved data to radio frequency. The nodes emit their respective convolved and upconverted data so that the emissions focus coherently at the target. | 10-09-2014 |
20150085853 | SYNCHRONIZATION OF DISTRIBUTED NODES - Dynamic, untethered array nodes are frequency, phase, and time aligned/synchronized, and used to focus their transmissions of the same data coherently on a target or in the target's direction, using time reversal or directional beamforming. Information for alignment/synchronization may be sent from a master node of the array to other nodes, over non-RF links, such as optical and acoustic links. Some nodes may be connected directly to the master nodes, while other nodes may be connected to the master node through one or more transit nodes. A transit nodes may operate to (2) terminate the link when the alignment/synchronization information is intended for the node, and (2) pass through the alignment/synchronization information to another node without imposing its local clock properties on the passed through alignment/synchronization information. In this way, an end point node may be aligned/synchronized to the master node without a direct link between the two nodes. | 03-26-2015 |
20160047894 | ANTI-GEOLOCATION - Methods, apparatus, and articles of manufacture make Geolocation of a source transmitter more difficult or impossible. Scatterers common to a source transmitter and an intended receiver are identified using a variety of techniques, such as iterative time reversal (ITR) and Singular Value Decomposition (SVD) of a scatter matrix. The source transmitter then uses time reversal and knowledge of the signatures of the scatterers to focus its transmissions on one or more of the scatterers, instead of the intended receiver. The source transmitter may have multiple antennas or antenna elements. The source transmitter and/or the intended receiver may include antenna elements with Near-Field Scatterers to enable spatial focusing below the diffraction limit at the frequencies of interest. The source transmitter may be a plurality of ad hoc nodes cooperating with each other. | 02-18-2016 |
Patent application number | Description | Published |
20090258714 | MOUNTING RING - Mounting rings and methods for mounting structures to shafts are provided. The rings and methods may be used to mount other rings or housings to a shaft. The rings are characterized by having flexible inner diameters that can deflect under a radial load. The radial deflection of the inner diameter permits the rings to deflect and engage an outer diameter of a shaft. The engagement of the rings with a shaft provides at least some resistance to movement, for example, rotation and/or axial displacement, of the shaft relative to the ring and structure. In one aspect, the ring has a closed, hollow, construction, for example, a circular, oval, or polygonal closed, hollow construction. The ring may include a plurality of indentations, such as slots, on the inside diameter of the ring that may relieve at least some of the circumferential stress in the ring. Methods for using the rings to mount a structure to a shaft are also disclosed. | 10-15-2009 |
20090258715 | METHOD OF MOUNTING A STRUCTURE TO A SHAFT - Mounting rings and methods for mounting structures to shafts are provided. The rings and methods may be used to mount other rings or housings to a shaft. The rings are characterized by having flexible inner diameters that can deflect under a radial load. The radial deflection of the inner diameter permits the rings to deflect and engage an outer diameter of a shaft. The engagement of the rings with a shaft provides at least some resistance to movement, for example, rotation and/or axial displacement, of the shaft relative to the ring and structure. In one aspect, the ring has a closed, hollow, construction, for example, a circular, oval, or polygonal closed, hollow construction. The ring may include a plurality of indentations, such as slots, on the inside diameter of the ring that may relieve at least some of the circumferential stress in the ring. Methods for using the rings to mount a structure to a shaft are also disclosed. | 10-15-2009 |
20100166353 | METHODS FOR PRELOADING A BEARING - Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring procedures and devices whereby a mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. The methods and apparatus allow the mechanic to apply and/or verify a preload on the bearing, for example, to apply and/or verify a preferred “3 thousandths” preload, as is desired in the industry. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. | 07-01-2010 |
20100326205 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper. The nut includes an outer surface having a plurality of markings corresponding to a plurality of roots of the plurality of engaging teeth to allow a user to selectively rotate the nut relative to the aligning arm to an engaging position such that a radially inner side of the keeper engages a slot of the shaft when the keeper teeth engage the engaging teeth of the nut. | 12-30-2010 |
20110037210 | STACKABLE BELLEVILLE SPRING - Disc springs that are resistant to premature failure caused by friction wear, disc spring assemblies and disc spring stacks comprising said disc springs, and methods of making and using said assemblies and stacks are disclosed. | 02-17-2011 |
20120079892 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a cap attachable to a shaft of a wheel hub assembly. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the cap and is configured to measure movement of the cap to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. The handle is connected to the frame and extends substantially perpendicularly relative to an axis of the shaft and extends to opposite sides of the axis. The frame, the plurality of legs and the handle are sufficiently rigid to allow a user to apply a force to the handle to move the hub in an axial direction relative to the shaft until cessation of movement of the hub relative to the shaft. | 04-05-2012 |
20120079893 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a follower configured to extend through an opening in a cover connected to a wheel hub. The cover covers the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, and the follower is configured to contact the end through the opening. The follower is received in a holder engageable with the cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the follower and is configured to measure movement of the follower to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. | 04-05-2012 |
20120079922 | SYSTEMS AND METHODS FOR ADJUSTING BEARING ENDPLAY - An apparatus for use in adjusting an endplay of a bearing of a wheel hub assembly includes an outer circumferential surface configured to be received within an annular space around the nut attached to a shaft of the wheel hub assembly and retaining the bearing on the shaft. An engaging surface is coupled to the outer circumferential surface and configured to engage the nut. A stopping surface is coupled to the engaging surface and configured to abut an outer surface of the nut opposite the bearing such that the engaging surface is positioned in an engaging position to engage nut engaging surfaces of the nut. An arm is connected to the stopping surface and extends out of the annular space away from the bearing and substantially parallel to an axis of the shaft when the stopping surface abuts the outer surface of the nut. | 04-05-2012 |
20120263517 | TRAIN AXLE ASSEMBLY - A train axle assembly includes a train axle, a ring assembly coaxially mounted on the train axle and a structure operatively engaged by the ring assembly and mounted on the train axle. The ring assembly has an outer diameter and a main section adjacent the outer diameter. The ring assembly includes a projection extending axially from the main section which is located at a diameter less than the outer diameter of the ring assembly. The projection has a portion of a diameter contacting the train axle so that the ring assembly is affixed to the train axle to provide resistance to relative rotation and axial movement between the ring assembly and the train axial. | 10-18-2012 |
20130125367 | RING FOR MOUNTING A STRUCTURE TO A SHAFT - Mounting rings and methods for mounting structures to shafts are provided. The rings and methods may be used to mount other rings or housings to a shaft. The rings are characterized by having flexible inner diameters that can deflect under a radial load. The radial deflection of the inner diameter permits the rings to deflect and engage an outer diameter of a shaft. The engagement of the rings with a shaft provides at least some resistance to movement, for example, rotation and/or axial displacement, of the shaft relative to the ring and structure. In one aspect, the ring has a closed, hollow, construction, for example, a circular, oval, or polygonal closed, hollow construction. The ring may include a plurality of indentations, such as slots, on the inside diameter of the ring that may relieve at least some of the circumferential stress in the ring. Methods for using the rings to mount a structure to a shaft are also disclosed. | 05-23-2013 |
20130145621 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper. The nut includes an outer surface having a plurality of markings corresponding to a plurality of roots of the plurality of engaging teeth to allow a user to selectively rotate the nut relative to the aligning arm to an engaging position such that a radially inner side of the keeper engages a slot of the shaft when the keeper teeth engage the engaging teeth of the nut. | 06-13-2013 |
20130145864 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a follower configured to extend through an opening in a cover connected to a wheel hub. The cover covers the wheel hub such that the cover inhibits access to an end of a shaft of the wheel hub assembly, and the follower is configured to contact the end through the opening. The follower is received in a holder engageable with the cover such that the follower is movable relative to the cover and the holder to allow the follower to extend from the holder to contact the end of the shaft. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the follower and is configured to measure movement of the follower to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. | 06-13-2013 |
20130160566 | SYSTEMS AND METHODS FOR MEASURING BEARING ENDPLAY - A system for use in measuring an end play of a wheel hub assembly includes a structure attachable to a shaft of a wheel hub assembly. A frame has a cavity receiving a measurement probe extending outwardly from the cavity. The probe contacts the structure and is configured to measure movement of the structure to determine endplay of the bearing assembly on the shaft. The frame includes a plurality of legs extending from the frame to a hub mounted on the shaft and coupled to the bearing to support the frame relative to the hub. The handle is connected to the frame and extends substantially perpendicularly relative to an axis of the shaft and extends to opposite sides of the axis. The frame, the plurality of legs and the handle are sufficiently rigid to allow a user to apply a force to the handle to move the hub in an axial direction relative to the shaft until cessation of movement of the hub relative to the shaft. | 06-27-2013 |
20130219681 | SETTING OF WHEEL HUB ASSEMBLY HAVING A SPACER THEREIN - A method for setting a wheel hub assembly having a spacer therein, mounted on an axle, shaft or spindle or includes a cap a shaft is disclosed. The method is used on a wheel hub assembly having a spacer and bearings therein mounted on the axle, shaft or spindle. A retaining nut on the wheel hub assembly is tightened to the manufacture's specified torque for a particular wheel hub assembly for securing said assembly together. The wheel hub of the hub assembly is rotated when the nut is torqued to set the bearings. The retaining nut is loosened after rotating and the endplay within the wheel hub assembly is measured using an endplay measuring tool. The torque on the retaining nut is then adjusted to obtain a desired endplay measurement for the wheel hub assembly. The resultant torque on the nut at the desired endplay measurement is different from the manufacturer specified torque for the wheel hub assembly. | 08-29-2013 |
20140130343 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - An apparatus for providing a load on a bearing mounted to a shaft includes an attaching member and a press mechanism. The attaching member is releasably connected to the shaft. The press member is coupled to the attaching member and is configured to provide a compressive load to the bearing. The press mechanism includes an aligning arm configured to engage a shaft slot of the shaft to align the press mechanism relative to the shaft when the attaching member connects to the shaft. A lock nut is engageable with the shaft and has a plurality of engaging teeth configured to engage a plurality of keeper teeth of a keeper. | 05-15-2014 |
20140290065 | METHOD, APPARATUS, AND NUT FOR PRELOADING A BEARING - Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring devices whereby the mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. An apparatus for precisely rotating a nut and a tool for precisely rotating a nut are also provided. A bearing retaining nut arrangement that permits the loading or evaluating of a bearing inner race is also provided. The bearing retaining nut arrangement includes a first load-setting nut, a lock washer, and a second jam nut that secures the arrangement to a shaft. | 10-02-2014 |
20140294531 | LOCK NUT SYSTEM - A lock nut system includes a molded nut having a plurality of teeth and a molded keeper having a plurality of keeper teeth engageable with the plurality of teeth to inhibit movement of the keeper relative to the nut when the plurality of teeth engages the plurality of keeper teeth. The keeper has a radially inner side configured to engage a shaft to inhibit rotational movement of the nut relative to the shaft when the plurality of teeth engages the plurality of keeper teeth. | 10-02-2014 |
20140306475 | TRAIN AXLE ASSEMBLY - A train axle assembly includes a train axle, a ring assembly coaxially mounted on the train axle and a structure operatively engaged by the ring assembly and mounted on the train axle. The ring assembly has an outer diameter and a main section adjacent the outer diameter. The ring assembly includes a projection extending axially from the main section which is located at a diameter less than the outer diameter of the ring assembly. The projection has a portion of a diameter contacting the train axle so that the ring assembly is affixed to the train axle to provide resistance to relative rotation and axial movement between the ring assembly and the train axial. | 10-16-2014 |
20150275957 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - A lock nut system includes a nut, a keeper engagement with the nut to inhibit movement of the keeper relative to the nut, and a keeper retaining member. The keeper has a radially inner side configured to engage a shaft to inhibit rotational movement of the nut relative to the shaft when the keeper engages the nut and a radially inner side engages the shaft. The keeper retaining member is secured to the keeper and is engageable with the nut to hold a keeper axially such that keeper is engaged with the nut. A cover member is located on an opposite side of the keeper retaining member relative to the nut and engaged to the keeper retaining member to inhibit a separation of the cover member from the keeper retaining member in such that that the separation of the cover member from the keeper retaining member provides a visual indication to a user. | 10-01-2015 |
20150292584 | RADIAL SPRINGS AND METHODS OF INSTALLING AND UNINSTALLING RADIAL SPRINGS - The present disclosure provides radial springs that control radial forces between adjacent concentric components. The radial springs may be configured for placement between the adjacent concentric components. The radial springs may include a base member, support members extending from the base member, and resilient members extending from the base members. The resilient members may extend radially, axially, at an angle relative to the axis, or a combination thereof, and may be radially deformable. The resilient members may exert radial forces substantially uniformly radially inward or outward in use. The resilient members may be leaf type members or cantilever type members. The support members and resilient members may be provided on a radially inward or outward side of the base member. The methods of installing and uninstalling radial springs may include engaging the resilient members with a tool and radially deforming the resilient members to engage or disengage the radial spring from an adjacent concentric component. | 10-15-2015 |
20150336226 | APPARATUS FOR PRELOADING A BEARING - Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring devices whereby the mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. An apparatus for precisely rotating a nut and a tool for precisely rotating a nut are also provided. A bearing retaining nut arrangement that permits the loading or evaluating of a bearing inner race is also provided. The bearing retaining nut arrangement includes a first load-setting nut, a lock washer, and a second jam nut that secures the arrangement to a shaft. | 11-26-2015 |
20150344985 | INDUCTION HEATING APPARATUS, CARRIERS, AND METHODS FOR HEAT TREATING PARTS - An apparatus includes rails for supporting sides of a circumferential peripheral edge of a carrier. A movable ram engages a rearward portion of the carrier. A movable restrainer restrains movement of the ram. A wheel engages a forward portion of the carrier. A controller is operable to control the movable restrainer to restrain movement of the ram with the carrier and at least one metal object disposed adjacent an induction heating device, the wheel to rotate the carrier and the metal object, the induction heating device to induction heat the rotating metal object, and the movable restrainer to disengage the ram so that the wheel pivots away to allow passage of the carrier and the heated metal object into a quench bath. A plurality of metal objects may be arranged in a circular array in the carrier about a diameter generally equal to the diameter of an induction coil. | 12-03-2015 |
20160053806 | METHOD, APPARATUS, AND NUT FOR PRELOADING A BEARING - Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring devices whereby the mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. An apparatus for precisely rotating a nut and a tool for precisely rotating a nut are also provided. A bearing retaining nut arrangement that permits the loading or evaluating of a bearing inner race is also provided. The bearing retaining nut arrangement includes a first load-setting nut, a lock washer, and a second jam nut that secures the arrangement to a shaft. | 02-25-2016 |
20160076580 | SYSTEMS AND METHODS FOR PRELOADING A BEARING AND ALIGNING A LOCK NUT - A lock nut system includes a nut, a keeper engagement with the nut to inhibit movement of the keeper relative to the nut, and a keeper retaining member. The keeper has a radially inner side configured to engage a shaft to inhibit rotational movement of the nut relative to the shaft when the keeper engages the nut and a radially inner side engages the shaft. The keeper retaining member is secured to the keeper and is engageable with the nut to hold a keeper axially such that keeper is engaged with the nut. A cover member is located on an opposite side of the keeper retaining member relative to the nut and engaged to the keeper retaining member to inhibit a separation of the cover member from the keeper retaining member in such that that the separation of the cover member from the keeper retaining member provides a visual indication to a user. | 03-17-2016 |
20160084316 | METHOD, APPARATUS, AND NUT FOR PRELOADING A BEARING - Methods and apparatus for preloading a bearing are provided. These methods and apparatus include preload monitoring devices whereby the mechanic can accurately monitor and regulate the preload on a bearing or bearing assembly. Aspects of the invention may also be used to adjust the endplay on a bearing or a bearing assembly. In one aspect, the preload on the bearing is transmitted through a housing having a fluid pressure that can be detected and monitored. An apparatus for precisely rotating a nut and a tool for precisely rotating a nut are also provided. A bearing retaining nut arrangement that permits the loading or evaluating of a bearing inner race is also provided. The bearing retaining nut arrangement includes a first load-setting nut, a lock washer, and a second jam nut that secures the arrangement to a shaft. | 03-24-2016 |