Abstract: In a DC-DC converter, a technique for sensing current supplied to a load and establishing an output voltage that conforms to a predetermined load line. The current carried by an inductor is sensed and used to control the duty cycle of the voltage applied to the inductor, thereby controlling the output voltage. A current sensing circuit includes a feedback network. A pole attributable to the feedback network cancels a zero attributable to the inductor so that a control voltage is developed that varies substantially linearly with the load current.

Abstract: An expansion mandrel includes a lubrication system for lubricating the trailing edge portion of the interface between the expansion mandrel and a tubular member during the radial expansion of the tubular member.

Abstract: A method is provided for reducing or eliminating off-flavor in water or fish by controlling cyanobacteria or algae in the water or fish wherein the cyanobacteria or algae produce agents that cause the off-flavor. The cyanobacteria or algae are susceptible to a new Bacterium NRRL B-30043 which heretofore has not been identified or recognized as a useful agent in controlling cyanobacteria or algae. By simply treating a body of water having an off-flavor with Bacterium NRRL B-30043, the off-flavor is reduced or eliminated. Commercial fisheries or nurseries which produce channel catfish for human consumption will benefit from using this environmentally friendly Bacterium NRRL B-30043 to reduce or eliminate off-flavor in the catfish.

Abstract: A fracture reduction clamp for the reduction of a fractured bone. The fracture reduction clamp is particularly suitable for surgical procedures wherein a bone having a fracture is to be fixated with a fixation apparatus after reduction of the bone with a strap. The fracture reduction clamp includes a bifurcated strap guiding head for contacting and firmly gripping the fractured bone, and a strap retainer disposed between the strap guiding head and a rotatable strap tensioner for retaining the ends of the strap being used to reduce the fractured bone. The strap guiding head can include a retractable spike for enhancing the grip of the fractured bone by the fracture reduction clamp. Rotation of the strap tensioner will tighten or loosen the strap about the fractured bone.

Abstract: A flexible shield or apron formed of a biocompatible material is placed between adjacent vertebral bodies and the vessels and body structure anterior of the spine subsequent to the performance of an anterior spinal surgical procedure. The apron is secured to adjacent vertebral bodies by conventional bone fasteners and is provided with a pleat to allow stretching as a consequence of movement between vertebral bodies to which the apron is connected. The apron may be retracted together with vessels it is shielding during a revision surgical procedure while minimizing risks associated with the formation of adhesions or scar tissue.

Abstract: A wellbore casing formed by extruding a tubular liner off of a mandrel. The tubular liner and mandrel are positioned within a new section of a wellbore with the tubular liner in an overlapping relationship with an existing casing. A hardenable fluidic material is injected into the new section of the wellbore below the level of the mandrel and into the annular region between the tubular liner and the new section of the wellbore. The inner and outer regions of the tubular liner are then fluidicly isolated. A non hardenable fluidic material is then injected into a portion of an interior region of the tubular liner to pressurize the portion of the interior region of the tubular liner below the mandrel. The tubular liner is then extruded off of the mandrel.

Abstract: The present invention provides an iron-type golf club head having a bridge member across a cavity on its rear surface, which member influences the trajectory of a golf ball struck by the club head. By altering the bridge member orientation across the cavity on the rear surface, the club head can be made to propel a ball in various directions. Thus, the trajectory of golf balls struck by the club head can be high, low, rightward, leftward, or combinations thereof.

Abstract: A fracture reduction clamp for the reduction of a fractured bone. The fracture reduction clamp is particularly suitable for surgical procedures wherein a bone having a fracture is to be fixated with a fixation apparatus after reduction of the bone with a strap. The fracture reduction clamp includes a bifurcated strap guiding head for contacting and firmly gripping the fractured bone, and a strap retainer disposed between the strap guiding head and a rotatable strap tensioner for retaining the ends of the strap being used to reduce the fractured bone. The strap guiding head can include a retractable spike for enhancing the grip of the fractured bone by the fracture reduction clamp. Rotation of the strap tensioner will tighten or loosen the strap about the fractured bone.

Abstract: A fluid mass flow control apparatus, particularly adapted for use in controlling fluid flow to semiconductor fabrication processes, comprises a tubular body part having inlet and outlet fittings and a bore extending therethrough and supporting a valve seat in the bore. A closure member is connected to an arm which extends laterally through a tubular spigot portion of the body part. The body part has a reduced thickness wall at the spigot portion to allow elastic deflection of the wall and movement of the arm to control the position of the closure member. An elongated tube or rod actuator on which a resistance heating coil is supported is operably connected to a control system for heating the actuator to move the arm to control flow of fluid through the apparatus. A flow restrictor is mounted upstream of the valve seat and a mass flow sensor is in communication with the passage to provide a mass flow rate signal to the control system.

Abstract: A portable environmental control system for evacuating particulate laden, toxic, and explosive gasses from an interior space includes a flexible partition for erection at the interior space, and a first section of flexible duct connected to the partition and to an electric motor driven blower unit having an explosion proof ducted fan. A second section of duct is connected to the blower unit and may be connected to a filter unit mountable in a window of an interior room or to a collapsible plenum having plural filter units mounted therein for treating and returning air evacuated from the space back into the space. The blower unit may be placed within a space having a high concentration of explosive gasses for evacuating the gasses by way of an elongated duct section connected to an elevating mechanism to discharge gasses out of doors above ground level.

Abstract: A computer systems implemented with I2O devices having no Option ROM associated therewith needs to boot an OS from such an I2O device without restricting the arrangement of the system BIOS boot sequence. A Virtual Option ROM is integrated into the system BIOS boot sequence code so that the BIOS can detect an I2O device, and then get instructions from the Virtual Option ROM to initialize an I2O Platform of an I2O subsystem, wherein the I2O device resides. Once the communication between the I2O subsystem and the BIOS is subsequently achieved, the OS can be booted from the I2O device. Further, by implementing the Virtual ROM, an I2O device having no real Option ROM attached thereto can also be identified and used as a system boot device in a selective boot process. The initialization process of an IOP is skipped if a non-I2O bootable device has been found before the detection of an I2O device during the Power On Self Test.

Abstract: A computer system including an enclosure having a face with an opening formed therein. A door is pivotally mounted on the enclosure adjacent to the opening for being moved between an open position and a closed position with respect to the opening. A removable heat generating component is mounted in the enclosure adjacent to the opening and a heat extraction member is attached to the door. A remote heat dissipating body is mounted in the enclosure. A heat routing member is attached at a first end to the heat extraction member and at a second end to the heat dissipating body. The heat extraction member engages a surface of the heat generating device when the door is in the closed position. The removable heat generating component can be cooled using the heat routing member and the remotely located heat dissipating body while still permitting the heat generating component to be readily accessed through the opening in the enclosure.

Abstract: Method and apparatus is described herein for accommodating two types of hard disks, for example, SCSI disks and FC-AL disks, using a single, dual-purpose backplane. The dual-purpose backplane includes a plurality of drive bays each including a first connector for receiving a complementary connector of an SCSI disk and a second connector for receiving a complementary connector of an FC-AL disk. In a computer system, one or the other of the first and second connectors is mounted upside down to avoid overlapping and structural interference with connection of other hard disks to the backplane. In an external storage system, hard disks are inserted sideways, and thus one connector type is mounted on the backplane in an orientation rotated 180 degrees from the other connector type.

Abstract: A portable computer includes a housing including a top portion pivotally mounted on a base portion. The base portion includes a module bay formed therein and also includes an internal module bay connector. A modular AC adapter is removably mounted in the module bay. The adapter is provided with a stationary connector for engagement with the internal module bay connector. A storage compartment is provided in the adapter. A first movable connector assembly includes a connection to the adapter positioned in the storage compartment. A second movable connector assembly is provided for connection to the adapter in the storage compartment. The adapter can be inserted into the module bay and interconnected with the computer. An AC connector can be stored in the adapter for carrying or extended for connection to an AC power source.

Abstract: According to a first model of an operation of circuitry, a first set of estimates of the operation is generated in response to a set of conditions, including a first estimate of the operation in response to a first condition. According to a second model of the operation, a second set of estimates of the operation is generated in response to the first condition and the first set. In response to a comparison between the first estimate and the second set, a subset of the first set is selected. According to the second model, an estimate of the operation is generated in response to a second condition and the selected subset.

Abstract: An integrated customer reward processing system and fuel dispensing apparatus to allow a retailer to authorize fuel to be dispensed at a discounted unit price in accordance with a customer's achievement of predefined purchasing criteria. More particularly, a data processing system is provided that implements customer rewards and includes a database that creates and maintains records associated with customers that make purchases at an associated store. The reward system will track the customer purchases and compare them with a predefined criteria to determine when a fuel discount is to be provided.When a customer meets one of the predefined criteria, the reward system will authorize a fuel discount and provide the customer with a mechanism to obtain the fuel at a discounted unit price.

Abstract: An apparatus and method for attaching a processor bracket to a system board. The apparatus includes: a) a driver base, b) a plurality of air drivers secured to the driver base, c) a screwdriver rod, with a screwdriver head, extending from each air driver, and d) a positioning guide attached to the driver base. The method includes the steps of: a) positioning a processor bracket, having a processor bracket slot and having multiple bracket nuts, on a system board, b) positioning a positioning guide of a multiple nut driver within the processor bracket slot, c) contacting the bracket nuts with the corresponding screwdriver heads of the multiple nut driver, and d) exerting downward pressure on all the screwdriver heads.

Abstract: A method of making a connector hub to mate with tubular frame members, for use in constructing a free span building. The method includes constructing multiple slots, each slot having an open end, a closed end, and a longitudinal axis; and for each slot; disposing a tooth on either side of the longitudinal axis; and making the area of the connector material in shear to the area of the tubular frame member in tension, as an approximate ratio of the unit strength of the material of the tubular frame member in tension to the unit strength of the material of the connector in shear.