Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided that include multichannel tube configurations designed to reduce refrigerant pressure drop through a heat exchanger manifold. In certain embodiments, tubes inserted within the manifold adjacent to a refrigerant inlet have non-rectangular or recessed end profiles configured to increase flow area near the inlet, thereby reducing a pressure drop through the manifold. In further embodiments, insertion depths of the tubes within the manifold vary based on distance from the inlet. This configuration may establish a larger flow area adjacent to the inlet, thus reducing the pressure drop and increasing heat exchanger efficiency.

Abstract: An apparatus for creating multiple and isolated well flow paths operating at different pressures in the wellbore is described. These multiple flow paths establish a full circulation loop with the surface and a remaining isolated flow channel produces reservoir fluids to the surface. Heat is transferred from the produced reservoir fluid into the circulated loop via a unique down-hole heat exchanger. The flow of reservoir fluid through the isolated annular well channel allows for more efficient and extensive extraction of heat from the reservoir fluid compared with merely heating the circulating loop via the well bore exterior surface.

Abstract: A technique facilitates the logging of hot, subterranean environments with a variety of logging tools. Logging tools with temperature limit ratings may be employed in environments that would otherwise be detrimental to operation of the logging tool due to the heat. The logging tool may be protected through placement of the tool at a desired location within a non-metallic flask. The logging tool also is surrounded with an insulating material and/or a material with a high heat of fusion disposed within the non-metallic flask to increase the time span for operating the logging tool in the hot, subterranean environment.

Abstract: A releasable locking system for a subterranean tool uses a split housing for a body lock ring that in one mode is retained for its normal locking function by a setting sleeve. The setting sleeve holds the potential energy in the housing that would otherwise cause the housing to grow radially and away from a locking function. The locking is defeated as a surrounding setting sleeve with a recess is moved to juxtapose the recess with the segmented housing allowing the housing to spring into the recess and away from lock ring engagement that previously maintained the locked position. The tool can be released and removed to a surface location.

Abstract: Degradable polylactic or polyhydroxyalkanoate polymers may be used to viscosify aqueous fluids for use in wells, Sand control screen or liner can be coated with a solid degradable polymer during placement in a well. Mechanical changes or flow changes in a well can be caused by solid degradable polymer that changes physical properties after it is placed in a well. Parts of devices or entire devices can be made of solid degradable polymer that converts to a fluid after selected times in an aqueous environment in a well.

Abstract: A technique enables determination of changes in length of a conveyance deployed between a surface vessel and a subsea installation. The technique allows information to be obtained on the relationship between length of conveyance spooled out or spooled in at a surface location and the depth and/or speed of an intervention well tool deployed in a well. The information can be used to determine the actual depth of the well tool deployed in the well for the intervention operation.

Abstract: A technique involves collecting formation fluids through a single packer having at least one drain located within the single packer. The single packer comprises an outer seal layer, and the at least one drain is positioned in the outer seal layer. A viscosity system also is incorporated and enables the viscosity of a surrounding fluid to be selectively lowered for sampling.

Abstract: Hydrocarbons are recovered from subterranean formations by waterflooding. The method comprises passing an aqueous displacement fluid via an injection well through a porous and permeable sandstone formation to release oil and recovering said released oil from a production well spaced from said injection well, wherein (a) the sandstone formation comprises at least one mineral having a negative zeta potential under the formation conditions; (b) oil and connate water are present in the pores of the formation; and (c) the fraction of the divalent cation content of the said aqueous displacement fluid to the divalent cation content of said connate water is less than 1.

Abstract: A system and method for separating solids from return fluids in well drill-out, flow back, well-test, and other production operations. Solids are collected in a filter comprising a perforate inner tube inside a solid outer tube with an annulus therebetween. The fluid stream from the well enters the filter through the inner tube so that the solids are captured inside and the filtrate flows out through the annulus. The filtrate is passed though a flow back line to a flow back tank. As needed, the solids are removed from the inner tube into a debris tube without interrupting the fluid flow through the filter. Chokes are included for equalizing the pressure along the flow path as the debris is moved from the filter to the debris tube and from the debris tube into to a debris pit so that dramatic changes in pressure are avoided.

Abstract: A liner string for a well has a liner hanger assembly at an upper portion of the liner string. A profile sub is located at a bottom portion of the liner string. A bottom hole assembly is latched to the profile sub. The operator lowers the liner string into the well with a drill pipe string and rotates the drill pipe string to rotate the drill bit to deepen the well. At a selected depth, the operator releases the bottom hole assembly from the profile sub and reverse circulates drilling fluid from a liner annulus surrounding the liner string, pumping the bottom hole assembly up the liner string. When the bottom hole assembly reaches the lower end of the drill pipe string, it latches to a catcher tool located at the lower end of the drill pipe string. The operator moves the liner hanger assembly into setting engagement with the casing string, releases the drill pipe string from the liner string, and retrieves the drill pipe string along with the bottom hole assembly.

Abstract: The present invention provides an apparatus and method of orienting perforating gun strings conveyed on a tool string. One embodiment of the present invention provides an orienting weight provided in a portion of the perforating device, such as the shaped charge, the loading tube or the gun housing. An adapter is provided intermediate the tool string that facilitates conveyance of the gun string downhole. Additionally, the adapter enables the gun string to rotate independent of the tool string.

Abstract: A method of treating a hydrocarbon-containing formation including injecting a scale inhibiting well treating fluid into a well, wherein the well treating fluid includes a self-diverting acid that includes about 1% to 20% by volume of at least one viscoelastic surfactant selected from a family of compounds described by where R3 contains at least 10 carbon atoms, p=1-6, R2 contains 1-6 carbon atoms and R1 contains 1-6 carbon atoms; and up to about 20% by weight scale inhibitor.

Abstract: A method of inducing fracture complexity within a fracturing interval of a subterranean formation comprising characterizing the subterranean formation, defining a stress anisotropy-altering dimension, providing a wellbore servicing apparatus configured to alter the stress anisotropy of the fracturing interval of the subterranean formation, altering the stress anisotropy within the fracturing interval, and introducing a fracture in the fracturing interval in which the stress anisotropy has been altered. A method of servicing a subterranean formation comprising introducing a fracture into a first fracturing interval, and introducing a fracture into a third fracturing interval, wherein the first fracturing interval and the third fracturing interval are substantially adjacent to a second fracturing interval in which the stress anisotropy is to be altered.

Abstract: A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations. The characteristics of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path includes a switch, such as a bi-stable fluidic switch, for reversing the direction of the flow in the vortex chamber. The flow path may include multiple vortex chambers, and the device may include multiple flow paths. A hardened insert in the outlet of the vortex chamber resists erosion. This device generates backpressures of short duration and slower frequencies approaching the resonant frequency of the drill string, which maximizes axial motion in the drill sting and weight on the bit. Additionally, fluid pulses produced by the tool enhance debris removal ahead of the bit.

Abstract: The problem of flappers that will not close due to high velocity gas rushing past and creating a vortex that has zones of high pressure pressing the flapper against the force of the torsion spring is reduced or overcome with modifications in the passage through a subsurface safety valve so as to reduce the intensity of the vortex to allow the torsion spring to pivot the flapper to closed position. Various shapes are inserted adjacent the flapper base to create turbulence to minimize or prevent the vortex and the associated pressure increases that would otherwise prevent flapper closure with the flow tube retracted. Inserts that create turbulence are placed in a recess that in part holds the flapper when it is rotated to the open position.

Abstract: A latching mechanism for selectively disengaging an upper pump from a motor in an ESP. The latching mechanism comprises barbs formed on an upper end of an upper shaft that are engaged by a tool to lift the upper shaft until a lower end of the upper shaft disengages from an upper end of a motor shaft. When the upper pump is disengaged from the motor shaft, only a lower pump is driven by the motor and flow of well fluid is circulated past the disengaged upper pump via a bypass line. The upper pump shaft may reengage the motor shaft if additional lift is required.

Abstract: A method of sealing annular space between an upright outer tube and an upright inner tube extending within the outer tube along an axial direction thereof involves pouring a liquid seal material into the annular space onto a support member fitted within the annular space between the outer tube and the inner tube in a manner substantially closing around the inner tube. The liquid seal material is poured in an amount sufficient to fill radial space between the inner tube and the outer tube fully around the inner tube, the liquid seal material is then cured to form an annular seal between the inner tube and the outer tube. The method is useful in sealing of the annular spacing between the surface and production casing of a gas well and installing a venting system to facilitate controlled venting of the annular space.

Abstract: A system for deploying a string of pipe from a drilling rig into a well includes a spider for mounting on a rig floor and a pipe gripper attached to the top drive. A hydraulic safety circuit monitors hydraulic fluid pressure at an apply port of the gripper and prevents hydraulic fluid pressure from being directed to move the slips to the released position if hydraulic fluid pressure is not already present at the apply port of the gripper. The safety circuit also monitors hydraulic fluid pressure at the apply port of the spider and prevents release hydraulic fluid pressure from being directed to move the gripping members to the released position if apply hydraulic fluid pressure is not already present at the apply port of the spider.

Abstract: New locking connector assemblies and telescoping extension/retraction assemblies are disclosed that operate on the natural spring rate constraints of radial protrusions or radially constrained rings as they interact with engaging members to provide the locking force and permit the connector and extension retraction assemblies to be engage and disengaged or extended and retracted.

Abstract: A device for protecting flammable fluid reservoirs, or the regions in immediate proximity thereof, from the hazards due to impact and reservoir rupture, and subsequent potential of fire, corrosion or other damage or injury due to contact with reactive fluids. Such impacts may arise from collisions, such as encountered in transportation systems, or structural or thermal failure and/or rupture of components and systems, or separation of system components. Such a device may be formed as a close-fitting shroud over such components, or surrounding fittings and junctions of mating components in such systems, or mounted near the location of such components in the direction of impact or failure. Such a device may have a pattern of pre-scored lines to facilitate break-up of the device upon impact or thermal stress.

Abstract: A pneumatic power tool with a housing assembly, a pneumatic motor assembly, an output member, and a trigger assembly. The housing assembly has a body, a cap member and a gasket assembly. The body defines a motor cavity and an inlet manifold. The cap member defines an air inlet port. The gasket has a first portion being a band formed of a compressible material and a second portion formed of a porous material. The band of the first portion is sealingly abutted against the body and cap member. The pneumatic motor assembly is received in the motor cavity defined by the body. The output member is driven by the pneumatic motor assembly. The trigger assembly is coupled to the housing assembly and is operable for selectively operating the pneumatic motor assembly. Pressurized air received into the air inlet port is filtered by the second portion of the gasket assembly and flows into the inlet manifold when the pneumatic motor assembly is operated. A related method is also provided.

Abstract: An apparatus and method for deep earth grounding includes positioning a power driver at a site, the power driver comprising a frame and an impact hammer operatively connected to the frame, adjusting placement of the impact hammer, raising the impact hammer, driving 10 foot sectioned grounding rods down into the ground at the site using the hammer, testing resistance, and determining if more additional grounding rods are necessary based on the resistance. A power driver device includes an open frame, guide rails operatively connected to the frame, an impact hammer operatively connected to the guide rails and moveable along the guide rails, and a hand crank assembly operatively connected to the frame and configured for raising the guide rails and the impact hammer up and down along the frame.

Abstract: The invention relates to a hand-guided electric tool having a motor and a pulse width modulator for generating a pulse width modulated signal for operating the motor. A unit is provided for reducing the EMC interferences emitted by the electric tool.

Abstract: A drive apparatus for a drill stem of a de-coking system is disclosed. The apparatus includes a feeder as water supply to the drill stem. The drill stem is rotatably driven by a rotational drive which includes a motor and a first and second gear box. The second gear box has an output gear which is meshed with a large gear which is connected to an outer gear rim of the feeder. A skirt envelops the gear which is formed by an output gear and by the second motor driven gear box and the gear which is connected to the feeder completely. A lower side of the skirt is open.

Abstract: A device for cleaning and doping (lubrication) equipment for threads (3b, 4b) of the type used to join pipes (4) to a pipe string (3), especially in connection with petroleum production, where cleaning fluid and dope (lubricant) are sprayed at the threads (3b, 4b) at relatively high pressure from at least one nozzle (5, 6) mounted in the rotatable make-up section (1) of a power tong, and where at least one injection pump (7, 8) arranged to supply cleaning fluid or dope to the at least one nozzle (5, 6) is located in the rotatable make-up section (1).

Abstract: An anti-stall tool in an oil well drilling assembly that controls reciprocation of the drill bit by a controller that alters weight-on-bit (WOB) depending upon measured downhole pressure or torque at the downhole motor. The controller receives preset high and low working pressure limits for the downhole motor and keeps the drill bit rotating by maintaining WOB during normal drilling operations, increasing WOB if sensed working pressure indicates that drill bit loading or torque is undesirably low, and reversing WOB by retracting the drill bit if excessive working pressure or torque is sensed.

Abstract: An apparatus and method are provided for obtaining formation data while drilling. The apparatus may include a drill string and a plurality of sensors. At least two of the plurality of sensors are spaced apart along the drill string a approximately the same distance as a length of a segment of the drill string. The segment of the drill string is either added to or removed from the rest of the drill string as the drill string moves in the borehole during a drilling operation. The method may include providing numerous sensors along a drill string and repeating a cycle of various functions. The cycle may include performing an operation moving the drill string relative to the borehole and stopping movement of the drill string. Additional functions may include changing an overall length of the drill string and performing the formation property while the drill string is relatively stationary.

Abstract: A drill bit assembly comprising a bit body connectable to a tubular drill string, and provided with a longitudinal passageway for an operating tool; an externally removable closure element for closing the passageway for the operating tool; and a passage tool attached to or connectable to the closure element in its closing position, wherein the passage tool comprises a lower part to which the closure element is attached or connectable, which lower part is arranged so that it can be moved out of the bit body together with the closure element, and an upper tubular part which is arranged so that it can be moved along the passageway in the bit body, the upper tubular part forming a passage with a downstream opening for the operating tool when the lower part of the passage tool has been moved out of the bit body.

Abstract: A microtunnelling apparatus and system that includes an external drive system having rotational and linear thrust drive means, a drill head section having drill rotor and drill rod and connecting to intermediate drill rods allowing extension of the boring hole created by the drill head section driven by the drive system. The drill head includes a modular construction having a plurality of circular disc like elements, a bearing module, a steering module, a spacer module, and a mounting module, for axial alignment and abutment and mounting within a cylindrical steering shell. Directional steering of the drill head includes a plurality of substantially radially extending channels in steering module, each with an hydraulically movable protuberance movable by control means to redirect the outer steering casing and thereby redirect the drill head section mounted on the distal end of the drill rods.

Abstract: A down hole apparatus for generating a pulsing action includes a tubular housing a rotating first mandrel with a first cam profile and a reciprocating second mandrel with a second cam profile, which engages the first cam profile. Upon rotational movement of the first mandrel, the first cam profile exerts an axial force upon the second cam profile to initiate a pulsing action by forcing the second mandrel away from the first mandrel. Springs bias the second mandrel back toward the first mandrel, thereby completing the pulsing action and maintaining the second cam profile engaged with the first cam profile.

Abstract: A rotating cone drill bit includes a plurality of mud nozzles extending from the bit body, which are thermally fitted by controlling the temperature differential depending on the corresponding materials, the amount of fit desired, and the diameters of the elements to be fitted and which provide substantially obstruction-free mud paths toward the wellbore bottom. The bit has a plurality of reduced diameter cutter assemblies, each having a journal projecting from a corresponding leg. The journal has at least two cylindrical bearing surfaces and an annular groove formed therebetween and a spindle. An annular retention segment is rotatably mounted in the groove. The retention segment has an outer radial surface engaging a portion of one of the bearing surfaces of the cone, and an energy beam welding area fusing substantially the entire engaging surfaces of the retention segment and the cone.

Abstract: A down-the-hole drill hammer assembly includes a casing, a drill stem, a drilling lug segment and a pilot drill bit is provided. The drill stem is housed within the casing and includes an abutment surface. The drilling lug segment is slidably engaged with a distal end of the drill stem and movable between an initial configuration and an extended configuration. The drilling lug segment includes a proximal end engageable with the abutment surface of the drilling lug segment. The drill stem is movable between first and second positions within the pilot drill bit. In moving to the second position, the drill stem slidingly engages the drilling lug segment and moves the drilling lug segment to the extended configuration.

Abstract: Embodiments of the present invention include a drill bit comprised of a plurality of blades. A first plurality of the blades has cutting elements positioned substantially within the cone section of the drill bit. A second plurality of blades has cutting elements positioned substantially within the blade flank section and the blade shoulder section. Another embodiment of the first plurality of blades in which the blades end or truncate at a radial distance substantially less than the radial distance of the blade shoulder section from the center of the drill bit.

Abstract: A superabrasive compact (e.g., a polycrystalline diamond compact) is disclosed, which includes a substrate pre-coated with at least one braze layer and an in-process drill bit assembly including at least one of such superabrasive compacts. Pre-coating the substrate with at least one braze layer and dimensioning the pre-coated substrate to fit within the tolerances of a conventionally-sized cutter recess of a drill bit body enables a drill bit manufacture to easily and rapidly braze the disclosed superabrasive compacts into the conventionally-sized cutter recess without substantially decreasing the superabrasive volume of the superabrasive compact.

Abstract: A method and apparatus for permitting construction equipment, and particularly backhoe loaders, to be transported in the hold of a seagoing vessel within the interior of an enclosed cargo container includes front and rear rollers that temporarily replace the wheels of the equipment and allow it to be driven into and out of the container without any disassembly of the equipment.

Abstract: A method of controlling a hybrid construction machine capable of preventing a system from being rendered inoperative without increasing a capacitance of a capacitor and of inhibiting delay of a swing operation relative to an operation command at the time of swing operation, and the hybrid construction machine are provided. For this purpose, at the time of discharge of the capacitor, actual torque command values are respectively generated by referring to an assist torque limit value corresponding to capacitor voltage of a generator motor and a swing power running torque limit value corresponding to the capacitor voltage of a swing motor, as well as, at the time of charge of the capacitor, an actual target output value of the generator motor is generated.

Abstract: An assembly structured to convert mechanical energy to electrical energy for a wheeled vehicle such as an automobile. A current generating assembly is mounted on the vehicle and an adaptor is connected between and in engaging relation with a vehicle wheel and a tire/rim assembly connected to the vehicle wheel. The adaptor includes a drive portion disposed in an accessible, partially exposed orientation relative to the vehicle wheel. A drive linkage, such as a drive belt, is disposed in driven relation to the drive portion of the adaptor and in driving relation to the current generating assembly. Rotation of the wheel during normal operation of the vehicle results in driving or powering of the current generating assembly and the generation of current to an electronic drive assembly of the vehicle and/or electrically powered components thereof, at least partially through the battery assembly associated with the vehicle.

Abstract: A work vehicle includes: a muffler which flows exhaust from an engine and extends in a transverse direction so as to allow the exhaust from the engine to flow in the transverse direction; and a CVT case for covering a belt-type CVT positioned frontward of the muffler in a longitudinal direction. The CVT case includes a cooling structure for introducing cooling air from outside, cooling the belt-type CVT, and discharging the cooling air from a discharge part. An exhaust duct includes an inflow opening to be connected to the discharge part for allowing the cooling air to flow into the exhaust duct, and an exhaust opening for allowing the cooling air to flow out rearward. The exhaust opening is elongated in an extending direction of the muffler and oriented in a direction that allows the cooling air flowing out to hit the muffler.

Abstract: Air flowing through a secondary air inducting conduit of a motorcycle is effectively cooled to enhance combustion efficiency of exhaust gas in a catalyzer. A part of the secondary air inducting conduit is exposed to a space behind a front wheel and in front of an engine, and thus acts as a secondary air cooling conduit section for cooling down secondary air flowing through the secondary air inducting conduit.

Abstract: A vehicle air intake system includes a grille disposed along a forward end of a vehicle. The grille has one or more inlet apertures for admitting airflow. A bulkhead extends laterally across the vehicle rearwardly of the grille. An intake enclosure having an intake port is disposed over the bulkhead. A bulkhead cover extends from the bulkhead to the grille. The bulkhead cover has louvers defining airflow passages therebetween for allowing the airflow admitted by the grille to pass to the intake port while inhibiting the passage of particles entrained in the airflow.

Abstract: An electric vehicle includes a vehicle frame, a frame connector, a battery compartment, a battery stopper and an anti-connection portion. The battery compartment is provided for receiving a battery unit which has a cable connector connected thereto by a power cable. The battery stopper is mounted to the vehicle frame and movable between a closed position where the battery unit is stopped from removing and an open position where the battery unit is removable. The anti-connection portion is provided on the battery stopper. When the battery stopper is placed in the open position, the anti-connection portion is located at an anti-connection position thereby to prevent the cable connector from being connected to the frame connector. When the battery stopper is placed in the closed position, the anti-connection portion is spaced away from the anti-connection position thereby to allow the cable connector to be connected to the frame connector.

Abstract: A scooter-type vehicle can freely set a capacity of a fuel filter without being restricted by swing of a unit-swing type engine. A cross pipe is spanned between a pair of left and right lower frames and a lower end of a down frame is connected to a central portion of the cross pipe. A fuel filter is disposed so that its lower end is higher by distance than the lower end of cross pipe. The fuel filter is disposed between the down frame and the fuel tank. Since the fuel filter is disposed in front of the fuel tank, it is not restricted by the swing of an engine located rearward of the fuel tank. Therefore, a capacity of the fuel filter can freely be set.

Abstract: A motorcycle includes a pair of left and right main frames, a fuel tank placed on an upper side of the main frames, an engine suspended on a lower side of the main frames and provided with a cylinder assembly and a crankcase, and a canister that adsorbs an evaporated fuel gas generated in the fuel tank, wherein the canister is arranged inside the main frames in a plan view of the motorcycle and is disposed on a rear side of the cylinder assembly and on an upper side of the crankcase of the engine in a side view of the motorcycle.

Abstract: The invention relates to a motor vehicle, comprising a body and a drive train, wherein the drive train comprises a front axle (10), a rear axle (13), a drive unit, and a gearbox (20), wherein the drive unit is designed as a hybrid drive having an internal combustion engine (16) and at least one electric machine (17, 18, 19), wherein the internal combustion engine (16) can be supplied with fuel from at least one fuel tank (21), and wherein the or each electric machine (17, 18, 19) can be supplied with electrical energy from at least one electrical energy store (22) in motorized operation, and wherein the or each fuel tank (21) and the or each electrical energy store (22) are positioned in a common section (23) of the body.

Abstract: A vehicle includes a vehicle body frame, an engine attached to the vehicle body frame, and a power transmission unit for transmitting output from the engine to a wheel of the vehicle. The vehicle body frame includes a plate-shaped suspension-supporting bracket which is integrally connected to front end portions of main frame sections extending in a forward/rearward direction of a vehicle at a lower portion of the vehicle body frame, and also is integrally connected to lower end sides of front frame sections vertically extending at a front portion of the vehicle body frame. The plate-shaped suspension-supporting bracket includes suspension arm-supporting portions formed integrally therewith. The lightweight vehicle body frame reduces total weight of the vehicle and, at the same time, enhances assembling accuracy thereof.

Abstract: A brake equipment of the driver-seat-direction changeable vehicle includes: a driver-seat-direction detector configured to detect whether the driver seat is facing the one or the other side, in the travel direction, of the wheel-side vehicle body; a braking unit configured to brake one-side wheels, which are located closer to the one side, in the travel direction, of the wheel-side vehicle body, and other-side wheels, which are located closer to the other side, in the travel direction, of the wheel-side vehicle body, while controlling brake-force distribution between brake forces of the one-side wheels and the other-side wheels in such a manner that the brake-force distribution becomes a set brake-force distribution based on ideal brake-force distribution characteristics; and a switching unit configured to change the set brake-force distribution in accordance with the direction of the driver seat detected by the driver-seat-direction detector.

Abstract: A drive shaft damper assembly is structured to be installed onto a drive shaft bearing while it remains secured to a drive shaft mounted to a vehicle. The drive shaft bearing assembly includes a bearing collar assembly having a collar and a securing mechanism structured to securely attach the collar to the drive shaft bearing. The drive shaft damper assembly also includes an inner damper assembly, interconnected to the bearing collar assembly, which defines an inner bushing interface, and an outer damper assembly defining an outer bushing interface. A bushing assembly is disposed in an operative engagement between the inner and outer damper assemblies, wherein each of a plurality of bushing members are individually interconnected between the inner bushing interface and the outer bushing interface. A mounting mechanism is structured to securely attach the outer damper assembly to a portion of the vehicle.

Abstract: An apparatus includes a hydraulic power steering motor. A continuously variable transmission has an input shaft rotatable under the influence of force transmitted from the engine and an output shaft operable to drive a pump. The continuously variable transmission is operable to drive the pump at a first speed when one of the input and output shafts of the continuously variable transmission rotates at a first speed. The continuously variable transmission is operable to drive the pump at a second speed when the one of the input and output shafts rotates at a second speed. A centrifugal sensor is connected with the one of the input and output shafts. The centrifugal sensor transfers rotational movement of the one of the input and output shafts to a linearly displaceable input member of the continuously variable transmission to change the speed at which the pump is driven.

Abstract: On an amphibious ATV, a triple-differential transmission is combined a continuously-variable drive. The gearbox can be set at a low ratio, for negotiation of difficult terrain, and at a high ratio for cruising trails. The high-low shift mechanism is located upstream, in the drive train, of the forward-reverse shift mechanism. Both mechanisms are located upstream of the steer-differential and of the two wheel-differentials. Main power from the engine is passed, through the mechanisms, directly to a wheel-ring that is common to both wheel-differentials. The common wheel-ring is bearing'd, not from the gearbox housing, but from the wheel-shafts, which are themselves bearing'd into the gearbox housing. Similarly, the steer-diff-housing is bearing'd, not from the gearbox housing, but from the steer-shafts, which are themselves bearing'd from the gearbox housing, which makes for a compact, narrow, layout of the gearbox—well suited to the ATV.

Abstract: The present invention relates to a loudspeaker assembly and a method of assembling a loudspeaker assembly. In one or more embodiments, the invention comprises forming a front baffle comprising a first driver mounting portion, an intermediate portion, and an edge mounting portion. A first driver is installed in the first driver mounting portion proximate to a first driver aperture. A rear baffle is formed from a second material, which, in one or more embodiments, is less stiff than the first material from which the front baffle is formed. The rear baffle comprises a top portion, sidewalls, a recessed mounting portion, and an edge portion. The edge mounting portion of the front baffle is attached to the recessed mounting portion of the rear baffle such that an entirety of said front baffle is recessed within said rear baffle spaced apart from said open bottom portion.