Abstract: A downhole tool, multi-stage cementing tool, and method for cementing. The tool includes a body having a bore axially therethrough and an opening radially therethrough, and a first sleeve positioned in the bore of the body. The first sleeve has an opening radially therethrough that is axially aligned with the opening of the body when the downhole tool is in a first configuration. An inner surface of the first sleeve defines a first seat. The tool also includes a second sleeve positioned in the first sleeve, with the second sleeve being aligned with the opening of the first sleeve and preventing fluid flow therethrough when the tool is in the first configuration. The second sleeve is configured to move axially and engage the first seat of the first sleeve when the tool is in a second configuration, so as to resist relative rotation between the first and second sleeves.

Abstract: A system and method for case management information entry provides a user interface for entry of case management events. Some embodiments provide a display showing events and determine deadlines or due dates for follow-up events/actions based on rules associated with an event entry. Other embodiments provide a quick populate feature that enters user defined pre-set entries for an associated case type. Other embodiments provide a translation feature for short hand entries that spells out the full length word or term for a short hand entry.

Abstract: Systems, circuits and methods related to low power efficiency improvement in multi-mode multi-band power amplifiers. In some embodiments, a power-amplifier (PA) system can include a first amplification path having one or more PAs configured to generate a high power radio-frequency (RF) signal from an input RF signal when in a high power mode. The PA system can further include a second amplification path having one or more PAs configured to generate a low power RF signal from the input RF signal when in a low power mode. The PA system can further include a switching circuit coupled to the first amplification path and the second amplification path. The switching circuit can be configured to allow amplification of the input RF signal through the first amplification path in the high power mode or the second amplification path in the low power mode.

Abstract: A method and generator for modifying interactions between a load and the generator are described. The method includes applying output power to the load using a power amplifier, controlling a level of the output power responsive to a power control setting, and adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load. The generator includes a compensation subsystem coupled to the power amplifier that controls a conduction angle of the power amplifier to enable a sensitivity of the power amplifier to be adjusted.

Abstract: Improved power amplifier (PA) bias circuit having parallel emitter follower. In some embodiments, a bias circuit for a PA can include a first bias path implemented to couple a base node of an amplifying transistor and a supply node, with the first bias path being configured to provide a base bias current to the base node. The PA can further include a second bias path implemented to be electrically parallel with the first bias path between the base node and the supply node. The second bias path can be configured to provide an additional base bias current to the base node under a selected condition.

Abstract: The present invention relates to a system for maintaining battery cycle life for battery-powered electric vehicles. Current battery-powered electric vehicles such as automobiles and trucks suffer from short cycle lifes of their batteries, meaning that these vehicles' batteries will become unusable well before the normal useful life of combustion engine powered vehicles. Owners of vehicles using my system will enjoy vehicles with acceptable ranges, acquisition and operating costs, yet will enjoy battery lifes as long or as longer than the useful life of combustion engine vehicles.

Abstract: In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation.

Abstract: Improved linearity performance for multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a first stage and a second stage, with each stage including a transistor. The PA assembly can further include a biasing circuit having a first bias path between a supply node and the base of a corresponding transistor. The PA assembly can further include a linearizing circuit implemented as either or both of a second bias path and a coupling path relative to the first bias path. The second bias path can be configured to provide an additional base bias current to the base under a selected condition. The coupling path can be configured to improve linearity of the corresponding transistor operating in a first mode while allowing a ballast resistance to be sufficiently robust for the corresponding transistor operating in a second mode.

Abstract: Multimode power amplifier bias circuit with selectable bandwidth. In some embodiments, a bias circuit for a power amplifier can include a first bipolar junction transistor (BJT) configured to pass a reference current. The first BJT can be coupled with a second BJT that performs at least some amplification for the power amplifier. The first and second BJTs can be configured as a current mirror. The bias circuit can further include a coupling circuit that couples the collector and the base of the first BJT. The coupling circuit can include a switchable element to allow the coupling circuit to be in a first state or a second state. The first state can be configured to yield a first bandwidth for the bias circuit, and the second state can be configured to yield a second bandwidth for the bias circuit.

Abstract: A self-contained, readily adaptable electrical device having a first, comprising conductors connected in common and adaptable thereto an existing duplex receptacle and receivable of and transferring mains only therefrom, providing no electrical plug in access thereat, therefore mains through conductors connected in common to a wire type therein first and within a conduit type connectable by a conduit connector, having method of attachment to first, allowing said conduit to a second, connectable thereto conduit and wire of first having same method of attachment and wire connected in common therein second to a corresponding duplex receptacle attached therein as a relocated receptacle option thereby a providing a fully adjustable second of the first and second having a corresponding receptacle allows novice individuals to temporarily or permanently relocate an existing hidden or difficult to access electrical receptacle thereat first to an adjacent location by second, for easier and safer receptacle access.

Abstract: In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation.

Abstract: An attachment apparatus for attaching to a tubular. The apparatus may include a flexible member extending circumferentially around the tubular more than once. A tension force on the flexible member may cause the flexible member to apply a first radially-inward gripping force on the tubular. An annular sleeve may be positioned radially-outward from the flexible member. The sleeve may apply a second radially-inward gripping force on the flexible member and the tubular.

Abstract: In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation.

Abstract: A medical device may include tubular member having a proximal end, a distal end, and a lumen extending therebetween. The tubular member may include an opening at a distal portion of the tubular member, wherein the opening is in communication with the lumen, wherein a distal end of the opening is disposed proximate of the distal end of the tubular member, and wherein the distal portion of the tubular member is configured to bend in at least one plane. The medical device may further include an actuation member extending at least partially within the tubular member, wherein a distal portion of the actuation member is configured to exit the tubular member at a location proximate the opening, wherein a distal end of the actuation member is coupled to the distal end of the tubular member, and wherein pulling the actuation member proximally is configured to cause the distal portion of tubular member to form a loop with itself.

Abstract: In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation.

Abstract: A method and generator for modifying interactions between a load and the generator are described. The method includes applying output power to the load using a power amplifier, controlling a level of the output power responsive to a power control setting, and adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load. The generator includes a compensation subsystem coupled to the power amplifier that controls a conduction angle of the power amplifier to enable a sensitivity of the power amplifier to be adjusted.

Abstract: A resource recovery system may maintain a counter in memory that indicates a number of times one or more threads of execution, which use shared resources, have crashed. The system may associate a first value of the counter with a resource allocated to a thread of the one or more threads, and may set an indicator associated with the thread to indicate whether the thread has crashed. The system may determine whether to re-allocate the resource to the thread based on the first value of the counter associated with the resource and based on the indicator associated with the thread.

Abstract: A wholestalk sugar cane loader includes a piler for accumulating wholestalk sugar cane into piles, and a grab assembly mounted to the end of a boom assembly carried by the loader frame and having opposed tines operable for encircling a mass of piled wholestale sugar cane, with the boom assembly then being operated for lifting the mass of wholestalk cane and depositing it into a container of a haul vehicle. The piler and the grab assembly have respective surface structures which cooperate, when the grab assembly is being loaded with the mass of wholestalk sugar cane, so as to aid the operator in keeping the tines of the grab assembly out of soil contact so that no soil is carried into the mass of wholestalk cane by the tines.

Abstract: The present invention relates to a temperature-controlled external battery charger and standardized, hand-changable battery modules for electric-powered vehicles such as automobiles, trucks, buses, boats, ships, air and spacecraft. Charging a vehicle's batteries in an external charger with a controlled temperature solves the problems of current designs, in which batteries degrade due to charging-induced heating, and must be either charged in the vehicle or must be changed by prohibitively-expensive changing robots. The present invention makes it possible to change vehicle batteries by hand, thereby permitting the vehicle to operate for very long durations by simply changing battery modules. By permitting the batteries to be charged outside of the vehicle the vehicle needs no on-board power source for charging, and need not sit idle for periods of time while its batteries are charging.

Abstract: A computerized apparatus and method may “pull” an event to a city rather than it being “pushed” by promoters. The system manages athletic matches, concerts, and other entertainment events requiring performers (the talent or act), a venue at a city, and ticket sales to attendees who pay the box office or “gate,” processing suggestions, voting, weighting of votes based on previous histories of customers purchasing and preference information. Later purchases substitute for votes in engaging customers to attend proposed events, which may still be cancelled if projected threshold sales are not met. If insufficient attendance is determined by the computer at a pre-determined deadline, the system cancels the event and issues refunds in cash, kind, discounts, or the like.