Abstract: A method and arrangement for determining the capacity of a heat exchanger is provided. The effective heat transfer coefficient for the heat exchanger is calculated from the measured inlet and outlet temperatures of the product and the measured inlet and outlet temperatures of the auxiliary medium. By means of the value, the outlet temperature of the product set for maximum flow of the auxiliary medium is determined as that at which the change in the heat content of the product is at least approximately the same as the change in the heat content of the auxiliary medium and the amount of heat transmitted by the heat exchanger for the product flow. The value is displayed to the user and permits a decision as to how much longer the heat exchanger can reliably be operated.

Abstract: A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.

Abstract: Apparatus and methods for cementing tubulars in a borehole are disclosed In some embodiments, the apparatus includes a housing, a cartridge disposed within the housing, and an actuator. The housing includes a fluid entry port and a fluid exit port The cartridge includes a first chamber and is moveable between a first and a second position In the first position, the first chamber is out of fluid communication with the entry port and the exit port. In the second position, the first chamber is in fluid communication with the entry port and the exit port. The actuator is adapted to move the cartridge between the first and second positions.

Abstract: A tubing injector unit for use in inserting and withdrawing coiled tubing from a well bore hole having in its structure a tubing injector component, a gooseneck component and a mounting component for connection of the overall unit to a supporting structure such as a mast. The mounting component has an upper area for carrying the gooseneck component thereon and a lower underside area forming an injector component supporting structure. The unit in operation thereby supports the injector component in a suspended condition beneath the mounting component so that the working forces which develop in inserting and withdrawing tubing in a bore hole are transferred separately to the mounting component by the injector component and the gooseneck component and thus directly to the supporting structure by the mounting component.

Abstract: An element includes a tube, at least in part including a shape memory material; and a swellable material disposed adjacent the tube.

Abstract: A downhole tool string, comprising a tool string bore and a drill bit located at the bottom of the tool string. The drill bit comprises a body intermediate a shank and a working surface. The working surface may comprise a substantially coaxial rotationally isolated jack element with a portion of the jack element extending out of an opening formed in the working surface to engage a subterranean formation. The tool string may comprise a driving mechanism adapted to rotate the jack. The clutch assembly disposed within the tool string bore may comprise a first end in communication with the jack element and second end in communication with the driving mechanism.

Abstract: Force balancing adjusts hydraulic fluid pressure in an upper piston area of a Rotating Pressure Control Device (RPCD) that has an inner housing rotatably engaged within an outer housing by an upper bearing and a lower bearing. The hydraulic fluid pressure is adjusted to balance net force in a upper piston area and a lower piston area. The fluid pressure adjustment creates a force differential that balances the total load transmitted through the upper bearing and the lower bearing and thereby extends the life of the sealing element and bearings. Additionally, a wear indicator signals the end of the useful life of the drill pipe sealing element.

Abstract: A method of sampling fluid from a subterranean formation includes positioning a first tool having a heater in a borehole so that the heater is adjacent a portion of the subterranean formation: heating with the heater the portion of the subterranean formation; removing the first tool from the borehole; orienting a second tool having a sampling probe in the borehole so that the sampling probe is to contact a portion of the subterranean formation heater by the heater; and obtaining via the sampling probe a fluid sample from the portion of the subterranean formation heater by the heater.

Abstract: One embodiment is a method for extracting oil from a near-depleted oil well. A portable natural gas, methane, or petroleum reformer is brought to a site of the oil well. A quantity of natural gas, methane, or a portion of the locally produced petroleum and a quantity of water is fed into the reformer. The natural gas, methane, or petroleum is reacted with the water in the reformer to generate a driver gas containing a mixture of hydrogen gas and carbon dioxide gas. The driver gas is compressed to a pressure appropriate for the oil well, the driver gas is injected into the oil well, and the oil is recovered from the near-depleted oil well. In one embodiment, sulfur is first removed from the natural gas or crude petroleum. Another embodiment is a method for generating electricity without greenhouse gas emissions.

Abstract: In one embodiment telescoping members are extended to bridge an annular gap either before or after it is cemented. Some of the telescoping members have screens and others have flow passages that can be selectively opened with associated valves to frac an interval in any order desired. The valves are then closed after the frac job and the other telescoping members are made to allow screened flow from the fractured formation. In another embodiment an interval to be gravel packed and fractured has a series of screens and selectively opened valves on a bottom hole assembly such as a liner. One or more external packers are provided. The entire interval is gravel packed at one time followed by packer actuation and then selective opening of ports to conduct a fracture operation in any of the zones defined by the set packers and in any desired order.

Abstract: A composition, apparatus and method of use of the composition and apparatus are described. In one aspect, a composition may include a shape-conforming material and nanoparticles sufficient to provide an elastic modulus of the composition that is greater than the elastic modulus of the shape-conforming material. A method of deploying an apparatus using such a composition may include placing the apparatus at a suitable location in a wellbore and activating the composition to deploy the apparatus in the wellbore.

Abstract: In cutting a downhole pipe in proximity to a closure in the pipe, the pipe is first perforated. A perforating torch is positioned with a pipe in proximity to the closure. The perforating torch produces cutting fluids in a first radial direction and produces an opening in the pipe, which cutting fluids produce a reaction force opposite to the first radial direction. This reaction force drives the perforating torch into contact with the pipe, anchoring it against any pressure wave produced by the cutting fluids and reflected off of the closure. Once the pipe is opened, a cutting torch is operated to sever the pipe. Any pressure wave generated by the cutting torch is vented through the opening.

Abstract: A method is provided for treating a subterranean formation penetrated by a well bore comprising the steps of: a) forming a phosphate ester gelled hydrocarbon fracturing fluid comprising a liquid hydrocarbon and a an alkyl phosphate gelling agent; b) adding said fluid a delayed gel breaker, c) injecting said fluid down a well, and d) allowing said breaker to break the fracturing fluid gel after an initial delay period and destabilize a metal crosslink in said gel, reducing the volatile phosphorous present in the fluid by at least about 25%.

Abstract: A composition, apparatus and method for use in a wellbore is described. In one aspect, a composition may include a shape-conforming material and nanoparticles sufficient to absorb a selected form of energy to heat the shape-conforming material to near or above a glass transition temperature. A method of deploying an apparatus using such a composition may include placing the apparatus at a suitable location in a wellbore and exposing the composition to the selected energy to deploy the apparatus in the wellbore.

Abstract: A flow conduit having at least one orifice is placed in the vicinity of a flow source, which in one non-limiting embodiment may be a hydrocarbon reservoir. The flow pathway between the orifice and the source is temporarily blocked with a degradable barrier. Once the flow pathway is physically placed, the degradable barrier is removed under the influence of an acid, a solvent, time and/or temperature. The flow source and the flow pathways are at least partially covered (and flow blocked by) a temporary coating such as a pseudo-filter cake formed by a viscoelastic surfactant-gelled aqueous drill-in fluid, and the flow conduit is extended to the flow source. The pseudo-filter cake is removed when viscosity is reduced by an internal breaker, and flow is then allowed. The method is useful in one context of recovering hydrocarbons where the flow conduit is a telescoping sleeve or tube that contacts the borehole wall.

Abstract: A method of reducing a pressure within a first cavity of a subsea device is disclosed which includes transferring fluid within the first cavity to an accumulator, increasing a pressure of the fluid within the accumulator and, after increasing the pressure of the fluid within the accumulator, transferring at least some of the fluid in the accumulator into a second cavity, wherein the second cavity is at a higher pressure than said first cavity.

Abstract: A system, apparatus and method are useful for lifting reservoir fluid in a gas-producing wellbore through the application of a differential between pressure of the gas in the wellbore's gas-production conduit a lower end of which is disposed in reservoir fluid accumulated at a bottom of the wellbore and pressure of the wellbore annulus. The apparatus comprises a collection module disposed in the gas-producing wellbore for collecting by condensation reservoir fluid being lifted as vapor with produced gas in a gas-production conduit disposed in the wellbore, and one or more lift modules for applying the pressure differential to lift the reservoir fluid collected by condensation, and optionally reservoir fluid accumulated at the bottom of the wellbore, within the wellbore.

Abstract: A wireline cutter comprises a primary housing with a first axial bore configured to receive a wireline positioned within a well bore, and a first blade mounted within the primary housing and operable to cut the wireline. A method of cutting a wireline in a well bore comprises running a wireline cutter into the well bore, receiving the wireline within the wireline cutter, and cutting the wireline with the wireline cutter. A one-trip cutting system for use in a well bore comprises a wireline cutter, and a coiled tubing cutter. A method for cutting a coiled tubing with a wireline disposed therein comprises running a system comprising a wireline cutter and a coiled tubing cutter into the well bore, cutting the coiled tubing with the coiled tubing cutter, and cutting the wireline with the wireline cutter, wherein both cutting steps are performed in one trip into the well bore.

Abstract: Disclosed herein is an atmospheric chamber. The atmospheric chamber includes, a first opposing wall of the chamber and a second opposing wall of the chamber, end members sealingly joining the first and second opposing walls of the chamber to create a fluid tight volumetric space, and at least one support substantially bridging between the first opposing wall and the second opposing wall positioned between respective end members.

Abstract: A whipstock includes a whipstock body having a diverter face; and a swellable material disposed about the whipstock body and configured, positioned and dimensioned to interact with an inside dimension of a borehole in which the whipstock is run and method.

Abstract: The turner for turning over and thickening a settled layer of an aggregate landscaping mulch material lying on a surface, includes a handle and a rolling head carried on the handle for rotation about an axis. The rolling head includes axially spaced endcaps supported about the axis, and elongate strips extending between the endcaps at radially spaced locations around the axis.

Abstract: A quick coupling apparatus for coupling a tool to a tool arm comprises a coupler member attached to the tool arm, and configured to engage a mounting bracket extending out from the tool. A wedge is mounted on the coupler member and is movable, when the coupler member and mounting bracket are engaged, from a closed position engaged in a groove on the mounting bracket to an open position where the wedge is removed from the groove. A wedge positioning mechanism selectively moves the wedge to the closed position and the open position. When the wedge moves into the groove and into the closed position, a remotely operated latch control moves a safety latch from an unlatched position to a latched position to prevent the wedge from moving toward the open position. The wedge positioning mechanism can be configured to utilize a single or double acting actuator.

Abstract: An operating apparatus for a work vehicle with a detachable implement provided with a hydraulic actuator, comprising: a control valve and a link mechanism for operatively connecting the control valve to an operating lever, both the control valve and link mechanism being disposed beneath a driver seat of the work vehicle; and a locking lever configured to be switched between a locked position for holding the operating lever in a neutral position, and a lock-releasing position for releasing the hold on the operating lever, wherein the locking lever is disposed between the driver seat and a rear fender positioned laterally of the driver seat.

Abstract: A road drag for medium and heavy grading projects is provided. The road drag includes a pair of side members and front, center and rear transverse bars that define a rectangular shaped platform. A V-member is disposed adjacent each corner of the platform and steel blades are attached to a first arm of each of the V-members in a downward direction. A center V-member is further attached to the center bar. Steel blades are further attached to ends of the center V-member in a downward direction. A tail board is secured to a pair of extensions that extend from the rear bar of the platform that defines a rear section. The rear section includes means to prevent the tail board from bouncing or hopping during application in order to better distribute material during use. The road drag further includes an axle and preferably dual wheels near or adjacent the tail board.

Abstract: The invention relates to a percussion mechanism (1) of a machine tool, in particular a hand-held machine tool, with a percussive pin (5), which has a region (11) of maximal diameter to which at least one catching mechanism (28) is assigned. It is provided that the catching mechanism (28) impinges on a section (15) of the percussive pin (5), which has a smaller diameter than the region (11).

Abstract: The invention relates to a striking device (5) comprising a striking mechanism (8) which is driven by a pressure medium. Said device comprises a percussion piston (13) which can be displaced back and forth by means of a control device and a control valve which is embodied as a pressure shut-off valve (19) or as a stop valve, said control valve automatically stopping the striking mechanism if it exceeds a predetermined maximum value based on the working pressure controlling the inlet line, blocking the pressure line (3) or maintaining the control device in one of the end positions thereof. The inventive striking device also comprises a hydraulic catcher buffer which is used to brake the percussion piston when it exceeds a predetermined impact plane. According to the invention, the control valve must remain deactivated at least as long as the percussion piston is displaced on the hydraulic catcher buffer.

Abstract: The invention relates to a clutch (2) for a hand-operated electrical tool, in particular for a hand-held electrical device with a rotating tool, such as a drill or hammer drill, where the clutch (2) disengages automatically when a defined disengagement torque is exceeded. The invention further relates to a hand-operated electrical tool, in particular a hand-held electrical device with a rotating tool, which has this type of clutch (2). The clutch (2) is switchable between two clutch conditions, which have a different level of disengagement torque.

Abstract: An electrical-cable transition, where two or more bundles of shielded cables divide from a shielded main bundle, is shielded from electromagnetic interference by a flexible shielding-element of bare or covered metal mesh wrapped round the transition to overlap or be overlapped by shielding of the branch bundles and interconnect electrically with it under straps. The flexible element may be an end-part of wrapped shielding of the main bundle that envelops the shielded branch bundles and is closed onto them. Alternatively, it may be a separate shielding element that is clamped by a clip or strap onto the shielding of the main bundle to sandwich folded-tags drawn out from the ends of the branch-bundle shields, onto a metal ring or collar through which the main-bundle cables pass before separating into the branch bundles. The separate element is closed tightly onto the individual branch bundles by draw-strings, ties or other fasteners.

Abstract: A coaxial cable is disclosed and includes a dielectric surrounding a center conductor. The coaxial cable further includes a shield surrounding the dielectric. The coaxial cable further includes a jacket surrounding the shield, the jacket having an interior surface. A dry floodant compound is dispersed on the interior surface of the jacket.

Abstract: A recessed electrical outlet box which includes a body that is selectably connected to a cover by either a first or a second hinge assembly. The body includes a back wall, a face plate, a side wall and an interior, wherein the side wall extends between the back wall and face plate and the face plate has an opening for accessing the interior. The interior includes a recessed pair of bosses and a pair of mounting holes, which can be used for mounting electrical devices in the interior. The first and second hinge assemblies have a first hinge axis and a second hinge axis, respectively, and are attached to the face plate and cover so that the first hinge axis is substantially perpendicular to the second hinge axis.

Abstract: Disclosed herein is an electrically conductive buoyant cable. The cable includes an electrical conductor member having at least one electrical conductor. The cable also includes a filler layer that consists of buoyant materials with relative density lower than 1. The filler layer surrounds and encloses the electrical conductor member. The invention includes a jacket, which, in one embodiment, contains a small quantity of filler material or no filler material. The jacket surrounds the filler layer. In one embodiment, the filler layer and the jacket are made of the same material.

Abstract: A metallic conductor and an insulator provided at an outer periphery of the metallic conductor for coating the metallic conductor constitutes an insulated wire or cable. The insulator has a reactor blended type polyolefin-based thermoplastic resin containing 51-85 mol % per monomer unit of the crystalline polypropylene. In the insulator used in a non-halogen flame retardant wire or cable, 40 to 300 pbw of a metallic hydroxide is added to 100 pbw of a blended composition. In the blended composition, the reactor blended type polyolefin-based thermoplastic resin containing 51-85 mol % per monomer unit of the crystalline polypropylene is greater than 50 pbw and less than 100 pbw, and a polyolefin is greater than 0 pbw and not greater than 50 pbw.

Abstract: A wire has a conductor and an insulation extruded onto the conductor. The insulation has a plurality of alternating crests and crevasses, where the ratio of the distance from the conductor to a top of the crest to the distance from the conductor to a lowest point in the adjacent crevasse is at least 1.1 and where the ratio is sustained within a tolerance variation of not more than 15% along the length of the wire.

Abstract: The present invention relates to a composite control cable comprising a polymer core and a plurality of strands of electrically conductive material extending in the longitudinal direction of the cable around said core. According to the invention, the polymer is selected from polymers presenting elongation at break that is greater than 7%, and traction strength such that the resultant traction strength of the cable is greater than a predetermined limit value.

Abstract: A flat cable includes a plurality of flat cores arranged at an interval, an insulating layer covering integrally each core, and an adhesive sheet. Both surfaces of the insulating layer are provided with a plurality of grooves to correspond to the cores respectively. The distal end of each core extends beyond the insulating layer and each has a connecting portion. Each connecting portion has two flat surfaces. One of the flat surfaces is used for electrical connection, and the other is adhered to the adhesive sheet. The adhesive sheet is adhered from the distal end of each connecting portion to a portion of the insulating layer. Further, an external surface of the adhesive sheet is colored.

Abstract: A method for manufacturing a post insulator. A core is introduced into a tube of an insulating stiff material while leaving a small circumferential space separating the core and inner walls of the tube. Adhesive is introduced under an overpressure into an interior of the tube and is cured while maintaining an overpressure in the interior of the tube.

Abstract: The present invention relates to an electrical insulator (1) comprising a tube (3) surrounded by an insulating sheath (5) that may be smooth or provided with fins (7). The insulating sheath is composed of a filled, hardened, flexibilised, hydrophobic, cycloaliphatic epoxy resin containing from 25 to 75% by weight of mineral filler. The process for manufacturing this insulator comprises the steps consisting of installing the insulator tube or a precursor of the tube, in an electrical insulator mould possibly provided with fins, feeding the filled unhardened hydrophobic cycloaliphatic epoxy resin in the mould so as to form the sheath and the fins of the insulator around the said tube or its precursor, hardening the resin inserted in the mould so as to obtain the insulator, and extracting the insulator obtained from the mould. The electrical insulator according to the invention can be used in a high voltage application.

Abstract: According to one embodiment, there is provided a printed wiring board assembly composed of a printed wiring board having a first component mounting portion provided on one surface of the printed wiring board, a second component mounting portion provided on the other surface of the printed wiring board having the second component mounting portion overlapped partially with the first component mounting portion, a large-scaled ball grid array component mounted on the first component mounting portion, a circuit component mounted on the second component mounting portion, and a supplementary component which is provided on the second component mounting portion of the printed wiring board having a first portion functioning as a heat-sink to remove heat generated from the circuit component and a second portion functioning as a reinforcement portion to reinforce the first component mounting portion.

Abstract: A flexible printed circuit board includes: a base film that has electrical insulation property; a conductive pattern that is formed on the base film and including a pair of differential signal lines and a ground line; an insulating layer that is formed on the conductive pattern; a conductive layer that is formed on the insulating layer; and a connecting portion that electrically connects the ground line and the conductive layer through a penetration hole formed on the insulating layer.

Abstract: A printed circuit board includes a base insulating layer and a conductor pattern provided on the base insulating layer. The conductor pattern includes a line portion linearly extending along a virtual axis line in a line region, a first bend portion extending along the axis line while being bent in a convex shape toward one side of the base insulating layer in a first bend region, and a second bend portion extending along the axis line while being bent in a convex shape toward the other side of the base insulating layer in a second bend region. The conductor pattern is formed such that the first bend portion and the second bend portion do not overlap with each other in a vertical direction when the printed circuit board is folded along a boundary.

Abstract: A semiconductor chip mounting board comprises an insulating substrate and a plurality of input or output ports to be connected to a semiconductor chip for processing a high-frequency signal. The semiconductor chip has on top thereof a chip ground layer structured by a metal layer. The insulating substrate comprises a strip line formed on top thereof and to be connected to the ports, and a cavity, or a recessed space, for embedding the semiconductor chip therein. The substrate further comprises a common ground made of metal and exposed to the bottom face of the cavity, a coplanar line connected to the strip line, triple parallel bonding wires connecting the connecting terminals of the chip and the coplanar line, and embedded conductors embedded at least in portions of an annular groove or annular gap defined between the inner wall surface of the cavity and the side faces of the chip.

Abstract: A printed circuit board includes a base insulating layer and a wiring. The wiring is composed of a terminal portion on an upper surface side of the base insulating layer, a copper plating layer inside a through hole of the base insulating layer and a wiring pattern on a lower surface side of the base insulating layer. A protective plating layer is provided on the upper surface side of the base insulating layer so as to cover the terminal portion and the copper plating layer inside the through hole. A cover insulating layer is provided on the lower surface side of the base insulating layer so as to cover the wiring pattern.

Abstract: A package substrate free of malfunction or error even with an IC chip in a high frequency range, particularly an IC chip with a frequency exceeding 3 GHz, is provided. A conductor layer 34P on a core substrate 30 is formed to have a thickness of 30 ?m and a conductor circuit 58 on an inter layer resin insulating layer 50 is formed to have a thickness of 15 ?m. By making the conductor layer 34P thick, it is possible to increase a volume of the conductor itself and decrease resistance. Further, by employing the conductor layer 34 as a power supply layer, it is possible to improve a capability of supplying power to the IC chip.

Abstract: A method of manufacturing an electronic component module includes mounting an electronic component on at least one surface of a first board, subsequently inspecting the first board for functions, forming a resin layer burying or covering the electronic component on the one surface of the first board to flatten the one surface side of the first board, aligningly stacking the first board, a plate-like member and a second board so that the other surface of the first board is opposite one surface of the plate-like member and so that the other surface of the plate-like member is opposite one surface of the second board, pressurizing the first board, the plate-like member and the second board which have been stacked, and heating the first board, the plate-like member, and the second board which have been stacked.

Abstract: A multilayer chip carrier with increased space for power distribution PTHs and reduced power-related noise. In a multilayer chip carrier with two signal redistribution fanout layers, in addition to signal escape from near-edge signal pads at the first fanout layer, remaining signal pads are moved closer to the edge of the chip footprint. At the voltage layer below the first fanout layer, the remaining signal pads are moved again, closer to the edge of the chip footprint. In the second fanout layer, below the voltage layer, the remaining signal pads escape. The region where signal pads are moved provides increased space for power PTHs.

Abstract: This invention relates to a printed circuit board and a method of fabricating the same, in which the thickness of a circuit pattern is decreased to thus realize a fine circuit, the circuit pattern is embedded in an insulating layer to thus decrease the thickness of a printed circuit board, and the time and cost required for the process of fabricating a printed circuit board are decreased.

Abstract: A printed wiring board has a substrate having a first surface and a second surface on both sides of the substrate. A cavity is provided on the first surface. The cavity caves in towards the second surface. Several bumps are formed in the cavity as protruding towards the first surface. An insulation layer is filled in the cavity. The bumps are isolated from one another by the insulation layer. The top of each bump that protrudes towards the first surface and a zone in the cavity and close to the top are exposed in the cavity without being covered by the insulation layer.

Abstract: Systems and methods for simultaneously partitioning a plurality of via structures into electrically isolated portions by using plating resist within a PCB stackup are disclosed. Such via structures are made by selectively depositing plating resist in one or more locations in a sub-composite structure. A plurality of sub-composite structures with plating resist deposited in varying locations are laminated to form a PCB stackup of a desired PCB design. Through-holes are drilled through the PCB stackup through conductive layers, dielectric layers and through the plating resist. Thus, the PCB panel has multiple through-holes that can then be plated simultaneously by placing the PCB panel into a seed bath, followed by immersion in an electroless copper bath. Such partitioned vias increase wiring density and limit stub formation in via structures. Such partitioned vias allow a plurality of electrical signals to traverse each electrically isolated portion without interference from each other.

Abstract: A circuit board has a first face and a second face opposite to the first face. An antenna element is mounted on the first face. A shield cover is attached to the second face. The shield cover includes a polygonal base portion, a first wall provided on a first side of the polygonal base portion, a second wall provided on a second side of the polygonal base portion, a third wall provided on a corner defined by the first side and the second side, and disposed between the first wall and the second wall, a first extending portion extended from the first wall so as to overlap with the third wall, and a second extending portion extended from the second wall so as to overlap with the third wall. The shield cover is soldered on the second face.

Abstract: A novel pole guard for electric utility poles has at least one notch for allowing a portion of the pole guard to provide insulative coverage below a cross arm of a utility pole. Further features include hooks, pins, or other fasteners on the pole guard for attaching insulative blankets.