Abstract: A combined measuring cup, funnel and strainer utensil. The utensil includes a main body having a sidewall defining an upper opening and a lower opening. Material may flow through the upper and lower openings to funnel the material. An abutment flange extends outward from the sidewall, and may act as a base to support the utensil. The lower face of the abutment flange may include a plurality of shoulders to provide stability when the utensil is used as a funnel. A flow barrier includes a plug section which may block the lower opening to permit the utensil to be used as a measuring cup. The flow barrier additionally includes a handle section in the form of a fluted flange. This may be placed within the main body, with the indentations of the fluted flange forming openings for straining material within the utensil. A cover may be placed over the upper opening to seal the main body against contamination, permitting storage of the material.

Abstract: The present apparatus relates to a funnel which is used to transfer food or liquid into receptacles, such as reclosable freezer or storage bags. The funnel is comprised of an ovalized wide mouth opening and a long neck with a plurality of legs which are rounded at the end and extend downwardly from the bottom portion of the neck. Once placed inside the bag, the neck of the funnel serves as a supporting device for interior wall of the storage bag and prevents the bag from collapsing upon filling. The plurality of legs provides for slotted openings at the base of the funnel which allow for quick disbursement of the food or liquid and prevents clogging of the funnel or backflow of the funnel chamber during the transfer of foods or liquids. Although the funnel is designed to fit within a quart size storage bag, an adaptable base which can be screwed on and off the base if the funnel can be used to accommodate different size bags or receptacles.

Abstract: An apparatus for felling and bunching trees is disclosed. The apparatus includes a front frame and a front axle supported by the front frame. The apparatus further includes a number of front wheels mounted on the front axle and a work tool supported by the front frame. The work tool has a blade for felling trees and a number of work arms which are movable to secure the trees within the work tool. The apparatus further includes a front hydraulic motor operable to rotate the front axle. The front hydraulic motor is supported by the front frame. The apparatus yet further includes a first hydraulic pump operable to supply pressurized hydraulic fluid to the front motor. The apparatus still further includes a rear frame which is pivotably coupled to the front frame, a rear axle supported by the rear frame, and a number of rear wheels mounted on the rear axle. The apparatus still further includes a rear hydraulic motor operable to rotate the rear axle. The rear hydraulic motor being supported by the rear frame.

Abstract: The invention relates to a process and apparatus for producing veneer strips of predetermined length, width and thickness from wood. The apparatus has a severing tool for dividing the wood to be machined into boards, a clamp for clamping the boards, and a machining device for machining the clamped boards into veneer strips.

Abstract: A rubber composition comprises one or more rubbers selected from the group consisting of natural rubber, polyisoprene rubber, styrene-butadiene copolymer rubber, polybutadiene rubber, acrylonitrile-butadiene copolymer rubber, isoprene-isobutylene copolymer rubber and ethylene-propylene-diene terpolymer rubber, and a reinforcing agent and a fluorine-based additive having a perfluoroalkyl group containing copolymer.

Abstract: A tire chain cross member assembly comprises a flexible cable on which is tightly wrapped a helical wire sheath. The sheath is surrounded by a first layer of helical wire sleeves that are free to move axially and circumferentially on the sheath. Sleeves of the first layer are surrounded by a second layer of helical wire sleeves that are free to move axially and circumferentially and that form traction elements. A tire chain comprises a pair of elongated side members and a plurality of the cross member assemblies.

Abstract: A wheel is formed of a rim and a wheel disk, the rim having a first rim s and a second rim seat, at least the first rim seat having a generatrix which is inclined towards the outside and extended axially towards the inside by a bearing surface intended to receive a tread support ring. The rim bearing surface is provided, radially to the outside, with elements in relief separated by recesses or hollows. On the major part of the entire surface of the radially inner wall of the wheel rim, each point of a generatrix of the radially inner wall, included between the point of tangency A of said generatrix with the corresponding axially inner generatrix of the disk and the end B axially located on the end of the second wheel seat, is on a circle of diameter D.sub.P which is at least equal to the diameter D.sub.A of the circle on which the point of tangency A is located and at most equal to the diameter D.sub.B of the circle on which the end B is located.

Abstract: Fluorescent dichroic fibers randomly incorporated within a media provide an improved method for authentication and counterfeiting protection. The dichroism is provided by an alignment of fluorescent molecules along the length of the fibers. The fluorescent fibers provide an authentication mechanism of varying levels of capability. The authentication signature depends on four parameters; the x,y position, the dichroism and the local environment. The availability of so many non-deterministic variables makes production of counterfeit articles (e.g., currency, credit cards, etc.) essentially impossible. Counterfeit-resistant articles, an apparatus for authenticating articles, and a process for forming counterfeit-resistant media are also provided.

Abstract: An apparatus for dispensing an adhesive tab ready for placement on the an edge of a substantially flat article, such as a folded mailer or the like. Adhesive tabs are disposed on a roll formed of a reverse-wound backing strip housed in the base of the apparatus. A manually operable feeder assembly advances the backing strip past an L-shaped stripper secured in the base. In addition to guiding the strip, the stripper assists the foremost tab in partially separating from the backing. The combined action of the advancing strip and the stripper serve to remove the tab from the backing and place the tab over a receiving slot. The article is then inserted into the receiving slot, thereby pressing and sealing the tab onto the edge. Adjustment means allow the advancing motion provided by the feeder to be altered based on the size of tab or spacing between the tabs on the strip. The receiving slot is also fitted with an adjustable applicator for assisting in pressing the tab onto the article edges.

Abstract: An apparatus for ultrasonically forming a surgical suture tip from a length of unfinished surgical suture material. The apparatus includes a first tipping die having a first face for contacting a portion of the length of unfinished surgical suture material. A second tipping die having a second face is also provided. At least one mechanical actuator is provided for moving the first face of the first tipping die toward the second face of the second tipping die. A second actuator vibrates at least one of the first and second tipping dies at an ultrasonic frequency of about 15 KHz to 70 KHz.

Abstract: A foldable security bar assembly, is convenient, aesthetic and less costly than existing security systems, and is used primarily for security rather than a shutter assembly. The assembly is for placing over or in an opening and has a plurality of horizontal bars extending between two channels, the two channels positioned one on each side of the opening with the bars slidable vertically within the channels. A plurality of connector links join adjacent bars together with at least one of the bars having a connection at each end within the channels to a raising and lowering mechanism in each channel coordinated to raise and lower the at least one bar and hence the whole assembly. A drive system is provided for the raising and lowering mechanism, and guides above or below the channels guide and retain the horizontal bars in a folded configuration above or below the opening with alternate bars on opposite sides.

Abstract: A fast-opening and fast-closing goods-handling door for allowing vehicles to pass therethrough includes a foldable or rollable flexible curtain, the edges of which are guided in respective slideways, and which are retained therein by means of retaining carriages guided by rails received in the slideways. The carriages are not able to leave the rails. The goods-handling door is further characterized in that it includes a coupling device for coupling the curtain to the carriages, and at least one stress-distribution device for distributing the stresses exerted on the edges of the curtain by the carriages when the door is subjected to detrimental forces.

Abstract: A garage door decorative cover assembly for use on an exterior surface of a garage door made of a plurality of door panels permitted to rotate relative to each other when the garage door moves from a closed position to an open position includes at least one flexible panel and, for each flexible panel, a first fixing element and at least one resilient second fixing element. Each flexible panel has a first end, a second end, a front surface and a back surface. With respect to each flexible panel, the first fixing element attaches the first end of the flexible panel to the exterior surface of the garage door, and the resilient second fixing element couples the second end of the flexible panel to the exterior surface of the garage door such that the flexible panel is held taut when the garage door is in both open and closed positions. The flexible panels are provided with fanciful holiday, seasonal, or other celebratory indicia.

Abstract: The screening arrangement, in particular a Venetian blind, is intended for installation in a roof window and comprises a screening length having a number of mutually connected elements as well as profile lists to be mounted on each of the side members of the sash and each having a track for receiving a structure displaceable along the track, the structure comprising a spring housing and a slide shoe. The slide shoe is provided with an abutment surface for the elements of the screening length during their gathering during raising of the screening arrangement. A bottom list of the screening length facing the bottom member of the frame is connected at each end with the displaceable structure and loaded in the direction of the bottom member of the sash by a coil spring rotatably mounted in the spring housing, the uncoiled portion of the spring extending in the track in question from the displaceable structure to a fixing point at the bottom member of the sash.

Abstract: A gate control apparatus includes a gate support member, an arm pivotally mounted thereto and having gate members connected to the arm, a flexible line connected to the arm, a line takeup for carrying the flexible line, and an actuator for actuating the line takeup. The gate is opened and closed by the arm either being pivotally lowered to open the gate or pivotally raised to close the gate. A radio transmitter is used to send a signal to a radio receiver which energizes a motor to either rotate a shaft and spool one way or another which either takes up the flexible line to pivotally raise the arm which closes the gate or lets out the flexible line to pivotally lower the arm which opens the gate. The user can operate this gate control apparatus without ever having to leave one's vehicle.

Abstract: To provide an apparatus for manufacturing a casting, in which sealing can be formed between joint surfaces of a mold without using any packing material. An apparatus for manufacturing a casting comprising a mold split into at least two mold parts designed so as to define a cavity, an introduction port provided at one end of the mold for introducing molten metal into the cavity, and an exhaust port provided at the other end of the mold for exhausting air in the cavity; characterized by further comprising a groove which is provided around a portion defining the cavity in at least one of joint surfaces of the at least two mold parts so as to connect the introduction port to the exhaust port.

Abstract: A porous composite forming material is held in a cavity of a casting mold, and molten light alloy is poured into the cavity of the casting mold through a gate. Then a gas pressure is applied to the cavity in the casting mold with the cavity closed, thereby impregnating the pores of the porous composite forming material with the molten light alloy and forming a composite portion formed of a composite material of the light alloy and the composite forming material.

Abstract: A layer of hollow spheres is floated on a fluidized bed beneath a furnace. A mold containing molten metal is heated in the furnace to melt the molten metal. The mold is then moved from the furnace through the layer of hollow spheres into the fluidized bed. As the mold moves into the fluidized bed, heat is conducted form the mold and the metal is solidified.

Abstract: A system of gating orifices for continuous pressure infiltration processes eliminates blow-out of the pressurized molten metal matrix material and friction damage to the infiltrated perform. The system includes three or more orifices along a vertical path of an upwardly moving perform which passes from vacuum or atmospheric pressure into a pressurized infiltrating bath of molten metal, then into a pressurized atmosphere in which the matrix fully solidifies, and from there to an atmospheric environment. The entering orifice, at the bottom of the pressurized bath, is elongated in the direction of the perform movement to provide a temperature gradient from above the matrix material melting temperature at the bath to below the solidification temperature farthest from the bath. The resulting liquid-mushy-solid sequence of the matrix material forms a solidification seal to prevent blow out of the pressurized molten metal.

Abstract: A rotary, regenerative heat exchanger includes an inner cylindrical hub (2) provided in a vertical position, a rotor (1) containing a heat exchange medium, first attachment members (30) for attaching the rotor to the hub, and a stationary casing (6) surrounding the rotor. A bearing (3) is provided to journal a lower end of the hub, and a slow moving hydraulic motor (4) is adapted to slowly turn the hub. The motor is provided with a housing enclosing a built-in radial bearing (26) and coaxially therewith a cylinder block and cam surface arrangement having a circular cylinder block (24) and a cam surface (21) surrounding the cylinder block and cooperating with a piston mechanism (22, 23) of the cylinder block such that reciprocation of the piston mechanism causes relative motion between the cylinder block and the cam surface. Second attachment members (5, 8, and 10) are provided to attach the motor to the stationary casing and to the hub, respectively.

Abstract: A tube/fin block for a heat exchanger has several tubes through which a heat transfer fluid can flow arranged side-by-side along a transverse direction of the block. Corrugated-fin complexes are inserted between respective adjacent tubes and are connected with the adjacent tubes. At least one of the corrugated fin-complexes is a double corrugated-fin complex with two corrugated-fin units arranged side-by-side in the transverse direction of the block. A particular manufacturing process for the tube/fin block is utilized. A heat insulation device is provided between the two corrugated fin units. A non-solderable spacer plate can be inserted between the two corrugated fin units and pulled out after the tube/fin block is soldered together so that a heat-insulating gap is formed. A plastic strip can be inserted into the heat-insulating gap as required. The block is appropriate for use, for example, in condensers and evaporators of motor vehicle air conditioners.

Abstract: A fin-tube block and method of making a fin tube block for heat exchangers is disclosed. Tubes provided for the through-flow of the coolant are manufactured as adjacent channels in an extruded section with a plate shape and then stacked on one another, alternating with corrugated ribs and additional extruded sections in a packet assembly and then soldered.

Abstract: A heating or cooling apparatus for a turbo-machine housing collar that adjusts the diameter of the housing using chambers that are arcs of a circle through which gas is blown onto the ribs of the housing. The gas circulates in a counterflow direction or in alternate directions for adjacent chambers in order to equalize the blowing conditions at every paint of the ribs.

Abstract: A combined power steering hydraulic fluid reservoir and cooling unit (12, 112) includes a housing (14, 114) having a reservoir tank (16, 116) for receiving and collecting hydraulic fluid from a power steering gear (18) and holding the hydraulic fluid in readiness for supply to a hydraulic pump (20). The housing has a heat exchanger (22, 122) with a cooling liquid flow path therethrough in heat transfer relation with the hydraulic fluid, eliminating a hydraulic fluid cooler otherwise connected in series between the power steering gear and the reservoir tank, and eliminating two extra hose connections therefor.

Abstract: A header of a heat exchanger includes a seat member having bent portions on its end portions, a tank member having side walls on its end portions, and a pair of caps sealing the open ends of a barrel formed from the seat member and the tank member. Each side wall has a free end portion bent inwardly by an amount substantially equal to a thickness of the bent portion. The inner surface of each bent portion and the outer surface of each offset free end portion are joined to form the barrel. Thus, protrusions on the exterior shape of the formed barrel are eliminated, thereby eliminating contours from the shape of each cap provided on each open end of the barrel.

Abstract: A process and apparatus for heating gas in which a flow rate D0 of a warm fluid is caused in an input line, connected at its upstream portion to a source of warm fluid and at its downstream portion to the inlet of one of the passages of a heat exchanger; a portion of the flow D0 is diverted before it reaches the inlet of the first passage, into a branch line connected at its upstream portion to a so-called primary point of the inlet line located between the source of warm fluid and the inlet of the first passage; the gas to be heated is caused to circulate in another passage of the exchanger, so as to effect heat exchange between the gas to be heated and the warm fluid, thereby to obtain at the outlet of the second passage a warmed gas, and at the outlet of the first passage, a cooled warm fluid; the temperature of the warmed gas is controlled by the aid of a flow rate regulating valve located in a selected position in the inlet or outlet line.

Abstract: A process for the thermo-hydraulic control of gas hydrates in subsea production and injection wells as well as pipelines which transport liquid or gaseous hydrocarbons is described, the process making use of a Nitrogen Generating System foamed or in solution. The control may signify the prevention of the formation of the gas hydrates or the dissolution of the gas hydrate plug already formed. Under conditions of use designed for the prevention of the formation of gas hydrates the SGN fluid prevents the thermal conditions leading to the gas hydrate plugs. Under conditions of use designed to dissolve the already formed gas hydrate plugs, the SGN fluid alters the thermo-hydraulic conditions which favor the gas hydrate plugs, so that they are dissolved and return to the water+gas phase.

Abstract: A method and system for increasing oil production from an oil well producing a mixture of oil and gas through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone and a selected injection zone, by driving a turbine in the oil well with the mixture of oil and gas; separating at least a portion of the gas from the mixture of oil and gas in the oil well to produce a separated gas and an oil-enriched mixture; driving a compressor with the turbine to compress at least a portion of the separated gas in the oil well to a pressure greater than a pressure in the selected injection zone to produce a compressed gas; injecting the compressed gas into the selected injection zone; and recovering at least a major portion of the oil-enriched mixture.

Abstract: A method of interconnecting wellbores is provided which is convenient and economical in its performance. In a described embodiment, milling is not required for forming an opening through a sidewall of casing positioned in a parent wellbore. Instead, an appendage is formed from the casing sidewall and deformed outwardly into a void. A lateral wellbore may then be drilled through the casing sidewall. A liner may be positioned in the lateral wellbore and attached to the appendage.

Abstract: Viscoelastic surfactant fluids for fracturing subterranean formations penetrated by a wellbore. The surfactant fluids are comprised of an aqueous medium; an effective amount of an inorganic water soluble salt; and an effective amount of at least one surfactant selected from the group consisting of: i) anionic surfactants; ii) nonionic surfactants; and iii) hydrotropic surfactants. The surfactant compositions can be further stabilized and the viscosity increased by the addition of one or more hydrophobic organic alcohols. This invention also relates to a method for fracturing subterranean formations using said viscoelastic surfactant fluids.

Abstract: Apparatus and methods are provided for completing a wellbore junction. In one embodiment described herein, a lateral wellbore junction is sealed utilizing an apparatus assembled within the well. The apparatus may include multiple housings which are engaged with each other to form a sealed assembly with flow passages extending into the lateral wellbore, and upper and lower portions of a parent wellbore. Associated sealing devices and flexible couplings are also provided.

Abstract: There are disclosed a wellhead system and a method for use in drilling a subsea well from a jackup platform which includes a wellhead housing which is installed on a surface casing of a subsea well. A first riser having a connector on its lower end is lowered over the upper end of the housing as the connector to land on the housing, and a second riser is lowered through the first riser and connector over and onto the upper end of the wellhead housing to form an upward continuation of the bore of the housing. The connector has locking parts which are movable between outer unlocking position to permit the second riser to be lowered onto and raised from the wellhead housing, and inner positions for locking engagement with the upper end of the housing and lower end of the second riser. A casing hanger is lowered through the second hanger and into landed position within the housing bore for suspending an inner casing string within the surface casing.

Abstract: The present invention, in certain embodiments, includes a whipstock system with a body having an upper concave and a lower end, anchor apparatus on the lower end of the body, the anchor apparatus having a movable member releasably connected to the lower end of the body, and movable radially with respect to the lower body, the lower end of the body and movable member initially occupying a first space with a first diameter, and the movable member and lower end of the body movable apart from each other to anchor the whipstock system in a wellbore tubular. In one aspect there is one or more toothed slips on the movable member for engaging an interior surface of the wellbore tubular in which the whipstock system is to be anchored. In one aspect such a system can be used "through tubing".

Abstract: A fire fighting apparatus that is mounted to a window sill of the floor with a fire therein. The fire fighting apparatus comprises a substantially elongated conduit having an opening on its upper end, an anchor arm mounted from the opening on the conduit and a waterway securely fastened to the conduit. A fire hose is secured to the bottom of the waterway to supply water to the fire fighting apparatus. The anchor arm comprises a horizontal portion that fits on top of the window sill of the burning floor to securely suspend the fire fighting apparatus thereon. The anchor arm has a wedge-shaped claw that may be used to break open or to pry open a shut window.

Abstract: A tractor for use with a front loader connected thereto has a pair of mast mounts for detachably attaching right and left masts of the front loader, a pair of braces for coupling the mast mounts to the tractor, and a weight mount for carrying a plurality of weights. The braces have distal ends thereof connected to the weight mount. A spacing L1 between the distal ends of the braces is smaller than a spacing L2 between proximal ends thereof. Consequently, the braces are arranged to avoid their interference with front wheel steering. With the weight mount acting also as a brace support, the weight mount has an increased supporting strength.

Abstract: A full truss tool bar is disclosed comprising an elongated main tool bar section having right and left tool bar wing sections positioned at the right and left ends of the main tool bar section. An elongated main truss member is positioned above the main tool bar section and is secured thereto. Right and left truss members are positioned above the right and left tool bar wing sections and are secured thereto. The main truss member is pivotally connected to the right and left truss members, about horizontal axes. In a modified version of the device, auxiliary tool bar sections are positioned outwardly of the right and left tool bar wing sections and have truss sections positioned thereabove and secured thereto. The trusses on the auxiliary tool bar sections are pivotally connected, about vertical axes, to the outer ends of the right and left tool bar wing sections.

Abstract: An agricultural implement provides improvements in ground-working implements having both a lowered ground-working mode and a raised transport mode wherein structure is provided to offset the effects of the moment forces created in the working mode. A fluid circuit is connected to a fluid actuator for controlling forces exerted thereby between a hitch member and the implement main frame and it is operable in a working mode to exert a resilient biasing force on the hitch member thus enabling pivotal floating motion of the hitch member while simultaneously countering force moments applied to the main frame by the ground-working tool. This system is also operable in a transport mode wherein the actuator exerts sufficient force between the hitch member and the forward end of the main frame as to assist in lifting and maintaining the implement in a raised transport mode.

Abstract: A plow blade mounting system for mounting an adjustable V-plow blade on any wheeled or tracked vehicle having a vertical lift mechanism including arms extending forwardly of the vehicle. A rear mounting plate assembly has a first swivel plate adapted for attachment to the vertical lift mechanism and a pivot member secured to the first swivel plate. A second swivel plate is pivotally mounted on a pivot member, and a T-frame assembly is securely mounted on the second swivel plate and has a forwardly projecting end and a triangularly shaped plate member secured to the second swivel plate and the T-frame. A hydraulic actuator extends between the first and second swivel plates for effecting relative rotating movement of the first swivel plate relative to the second swivel plate about the pivot member.

Abstract: A second pinion is rotatably supported around an intermediate shaft and slidable in an axial direction of the intermediate shaft. A pinion sleeve is fixed to the intermediate shaft. A first clutch mechanism selectively engages and disengages the second pinion with and from the pinion sleeve to selectively transmit and interrupt a rotational force of a motor to a tool attached on a front end of a hammer drill. A sleeve is supported around the intermediate shaft so as not to be rotatable about the intermediate shaft but slidable in the axial direction of the intermediate shaft. A motion converting member is rotatably supported around the intermediate shaft. The motion converting member converts the rotational force of the motor into the percussion force. A second clutch mechanism selectively engages and disengages the motion converting member with and from the sleeve to selectively transmit and interrupt the percussion force to the tool.

Abstract: Disclosed is an improved forcible entry tool for opening locked or jammed doors by emergency personnel for the purpose of apprehending criminal suspects, gathering evidence, and preserving lives of people who become trapped by fire, earthquake, tornadoes, or by other circumstances beyond their control. The tool of the present invention comprises an elongated frame with a piercing pivot blade on the front end of the tool. The pivot blade is configured to pivot perpendicular to the frame upon penetration through a door, thereby enabling the tool operator to effectively pull back on the tool to break open an outwardly swinging door. A detachable ram head may be mounted over the front end of the frame for purposes of breaking through a door that swings inward (i.e. away from the tool operating personnel).

Abstract: A primary shaft locking device of an electromotive tool is disclosed. A plurality of braking blocks are installed with a plurality of axially projected supporting pieces and a plurality of radially projected nose portions. An output shaft is installed within the receiving hole and a cam is installed in one end of the output shaft so that the cam is rotated synchronously with the output shaft. Furthermore, a driving disk attached to a speed changing gear set is installed, the disk surface of which is installed with a plurality of convex blocks having a fan shape. These convex blocks is matched with the fixing seat, and is arranged between the two supporting pieces installed on the braking blocks. Thereby, when the rotary is driven to rotate, at first, the convex block will rotate the supporting pieces in order that the braking block release from braking condition so as to drive the output shaft, the cam and the braking block to rotate at the same time.

Abstract: A mount to attach a standard hand-held pavement breaker to a backhoe bucket quickly and easily. The invention allows the pavement breaker to be mounted and dismounted without a person having to lift or manually operate the pavement breaker. The mount attaches to the handles of the pavement breaker and then to the side of the backhoe bucket. The sleeves which fit over the handles are adapted to automatically depress the trigger of the pavement breaker whenever the pavement breaker is in firm contact with the surface to be broken.

Abstract: This invention uses a combination of drilling, dissolving, and sinking to emplace a closed end well pipe into a salt formation. The well which results can be used to produce geothermal power or for such other purposes for which it may offer an advantage. This method uses the following combination of properties of salt to achieve the desired result: solubility in water, plasticity at relatively low temperatures, and occurrence in large, deeply penetrating structures.

Abstract: A sampling device includes a barrel having a downhole end, an exterior surface, an interior surface defining a hollow interior, and an open end at the downhole end of the hollow interior. A fluid entrance penetrates the exterior surface. A fluid path having an outlet port is fluidly coupled to the fluid entrance. The device is driven into a subsurface so that a soil sample is forced into the hollow interior. While the device is still in the subsurface a fluid sample is collected through the least one fluid entrance and fluid path.

Abstract: Systems and associated methods for tracking and/or guiding an underground boring tool are disclosed. Each system or arrangement uses one or more detectors to measure the intensity of an electromagnetic field which is transmitted from an underground boring tool. The measured intensities may then be used to determine the location of the boring tool. In a dead reckoning embodiment of the invention, one detector may be employed while, in a position determination embodiment, two or more detectors may be employed. In any embodiment, physically measurable parameters may be used in addition to measured magnetic intensities. A highly advantageous mapping tool instrument and a cubic antenna are disclosed. The former for use in the position determination embodiment and the latter for use in any magnetic field detector employed herein.

Abstract: This invention provides a fluid-handling system for use in underbalanced drilling operations. The system includes a first vessel which acts as a four phase separator. The first vessel includes a first stage for separating solids. Oil and gas are separated at a second stage. A pressure sensor provides signals to a pressure controller, which modulates a gas flow valve coupled to the vessel for discharging gas from the first vessel. The pressure controller maintains the pressure in the first vessel at a predetermined value. An oil level sensor placed in the first vessel provides a signal to an oil level controller. The oil level controller modulates an oil flow valve coupled to the vessel to discharge oil from the first vessel into a second vessel. Water is discharged into a third vessel. Water from the third vessel is discharged via a water flow control valve, which is modulated by a level controller as a function of the water level in the third vessel.

Abstract: A down hole hammer assembly comprising a reverse circulation hammer (11) having a drill bit (12) mounted to one end of a housing which accommodates a percussive hammer, the other end of the housing being adapted to be mounted to a drill string, the assembly further comprising a support member (14) receivable on the lower end of a bore hole casing (13) which is receivable over the drill string, the support (14) comprising a first part (15) adapted to be fixed to the lower end of the casing and a second part (16) rotatably received on the first part (15) and capable of limited axial slidable movement thereon, the second part (16) being engagable with the drill bit (12) to be rotatable with the drill bit (12) on rotation of the drill bit (12) in one direction and to be movably axially with the drill bit (12) the drill bit (12) being disengagable with the second part (16) to be able to be movable axially relative to the second part (16), flow passageways being provided between the drill bit and the second part to

Abstract: An impact driven oil and gas well tool for use with an elongated tubular string having a central flow conveying bore is provided for channeling pressurized fluid to the tool body. The apparatus further includes an elongated longitudinally extending tool body having a connecting end portion at its upper end for connecting the tool body to the pipe string. A fluid chamber in the tool body is provided that is in fluid communication with the pipe string bore. A stem is reciprocally movable within the tool body in a telescoping fashion. The stem includes a lower end portion for carrying a working member such as a drill. A pressure responsive valve is provided for controlling relative movement of the stem and the tool body. An anti-chatter annular sleeve is positioned in the fluid chamber and about the valve member. A spring extends between the sleeve and the valve member for holding the valve member off the seat until a predetermined flow rate through the tool body is reached.

Abstract: An engine compartment structure of a vehicle for introducing cool air into an air intake port without a baffle plate is provided. The structure is constructed such that an air intake port is located behind a first headlamp in the engine compartment, the opening of the air intake port is directed toward the front of the compartment, and the rotational direction of cooling fans for the radiator is determined such that the air discharged by the one or more radiator cooling fans is directed away from the location of the intake air port of the engine, and towards a side behind a second headlamp which is opposite to the first headlamp in the engine compartment.

Abstract: An offset axle (1) for low-platform town buses. It solves the problem of making it possible to integrate disc brakes in the offset axle system without reducing the aisle width of the platform in the vehicle in the area of the axle and obtaining a sufficiently low platform level in spite of the gantry being significantly lowered owing to design requirements. Disposed eccentrically in the offset axle (1) is a differential (2) the axle shafts of which are each inserted into a drive pinion (5) of a gantry drive (3) with demultiplication effect, the drive being freely mounted in a self-centering manner between two intermediate pinions (6) each of which transmits half the drive power to a spur wheel (7) in order to drive the wheels. Owing to the two gantry drives (3), the axle shafts (4) are lower than the wheel axles by the depth of the gantry. The axle shafts (4) are mounted eccentrically on the upper edge of the interior of the axle bridge housing (8).