Abstract: A pneumatic tire comprises a tread portion provided with at least two circumferential grooves and lateral grooves extending from the circumferential grooves so as to form blocks which are circumferentially divided by the lateral grooves and arranged in at least three circumferential rows axially divided by said at least two circumferential grooves. Each of the lateral grooves is provided with a tie-bar rising from the groove bottom to a certain height as to connect the opposite groove walls with each other. The tie-bars in the lateral grooves extend towards the adjacent circumferential grooves but terminate before the circumferential grooves so as to provide certain distances therebetween, and the distances are gradually decreased from the axially outside to the axially inside of the tread portion. The inclination angles of the lateral grooves are gradually decreased from the axially outside to the axially inside of the tread portion.

Abstract: A vehicle wheel with a wheel rim and a solid tire positioned on the wheel rim. The vehicle wheel has an annular upper shell having a first wedge-shaped surface and composed of at least two upper segments. Further, the vehicle wheel includes an annular lower shell composed of lower segments and having an outer circumference having a second wedge-shaped surface. Moreover, the second wedge-shaped surface is structured and arranged in a diametrically opposed manner to the first wedge-shaped surface. Additionally, the annular lower shell is arranged on the rim, the annular lower shell is arranged against the annular upper shell, and the annular upper shell is connected to the solid tire.

Abstract: The invention is a high-efficiency wheel product for use with various ground vehicles. The product is designed to provide rolling support to the vehicle and to accommodate various surface conditions, for example, smooth pavement, rough pavement, potholes, dirt roads, and other conditions. The wheel product includes a multi-chambered pneumatic tire designed to minimize energy loss between the tire and a rolling surface by substantially reducing tire flex, a main source of energy loss in ground vehicles. Additionally, the product can reduce the need for conventional drive train elements such as shock absorbers.

Abstract: A printer includes a driving station configured to drive print media between a pair of pinch rollers. A printing station is configured to print upon the driven print media. An adhesive application station is configured to apply an adhesive to the print media. A collection station is configured to collect a stack of printed print media bearing adhesive. The collection station includes a binding press configured to bind the stack together.

Abstract: The invention provides a manufacturing apparatus of a pellet which has not quality deterioration and a great apparent specific gravity. The apparatus is provided with (a) bunching portions (16) bunching band-like long continuous material(s) (R) and/or a plurality of filamentous long continuous materials (R) to a narrow width so as to form a cord-shaped bunched material (R?), (b) compressing portions (22) having compressing rollers (50a, 50b) with an uneven outer surface and form a cord (S) by point compressing a twisted cord material (R?), (c) rotation portions (14) twisting the cord-shaped bunched material (R?) by relatively rotating the bunching portions (16) or the compressing portions (22) so as to form the twisted cord material (R?), and (d) a cutting portion (102) provided in an outlet side of the compressing portion (22) and cutting the cord (S) formed by the point compressing to a pellet shape.

Abstract: An apparatus for obtaining “shrink sleeve” labels, comprises a carousel that is provided peripherally with a plurality of spindles configured for being wound from portions of plastic film, a sealing device cooperating with said spindles means for sealing opposite edges of said portions for obtaining said “shrink sleeve” labels, said sealing device comprising a laser device; a method for labelling containers, comprises in sequence: advancing a plastic film in an advancing direction; cutting said plastic film transversely to said advancing direction to obtain a portion of plastic film; winding said portion in such a way as to make opposite edges of said portion overlap one another; joining together said edges to obtain a “shrink sleeve” label, said joining comprising sealing by means of a laser beam.

Abstract: A laminator 100 in which the diaphragm can be mounted simply and easily without the use of a mounting frame. The laminator 100 includes an upper chamber 110, on the bottom surface of which is mounted the diaphragm 140, and a lower chamber 120 on which the upper chamber 110 is stacked and in which is disposed a support base 130 on which a workpiece A that is to be laminated is set. The diaphragm 140 is larger than the upper chamber 110, and an excess portion of the diaphragm that protrudes outside the upper chamber when the diaphragm is mounted on the upper chamber is folded upward and clamped against the sides of the upper chamber by multiple clamps to fix the diaphragm in place on the upper chamber.

Abstract: The present invention relates to a locking device design to act between a tire and its respective wheel rim for dynamically balancing a tired wheel. The locking device is arranged to be installed on a tired-wheel maintenance machine having a support frame and a rotatable support for a wheel rim of a deflated tired wheel and locking-unlocking means for locking-unlocking the wheel rim to and from the rotatable support. The locking device comprises holding belt anchorable to the support frame and an engaging group designed removably to engage the tire of the deflated tired wheel, while its respective wheel rim is controllably angularly shifted.

Abstract: A screen device in which a screen is provided in a contractable and expandable manner between a pair of screen installation frames, at least one of which is movable in a sliding manner, and the screen can be opened and closed by pulling it sideways, and which has upper guide frames for guiding the screen installation frames while covering their upper end sections. The screen installation frames have, at their upper end sections, fall-down prevention guide sections. The upper guide frames have, in their insides, guide rail projections which prevent, by holding the fall-down prevention guide sections, the upper end sections of the screen installation frames from coming out of the upper guide frames.

Abstract: A door assembly includes multiple door panels arranged in series along laterally spaced tracks, extending laterally between the tracks, and supported for movement on the tracks. A first pair of hinge plates is secured to a first door panel, each member of the first pair being located at an opposite lateral side of the first panel. A second pair of hinge plates is secured to a second door panel, each member of the second pair being located at an opposite lateral side of the second panel. A first release pin alternately disconnects and connects the first and second hinge plates at the first lateral side of the door panels. A second release pin alternately disconnects and connects the first and second hinge plates at the second lateral side of the door panels.

Abstract: A device including a tube for winding and unwinding a screen which is controlled in rotation by a gear motor and which is supported on a fixed head and wherein a rotational part mounted within the tube is kinematically linked to rotate with the tube with the part including elements that are used to reflect a position of the rotational part and which elements are detected by senors that are connected to an electronic processing unit. A tightly sealed partition secured to the head is further provided to define, on one side, a first compartment for receiving at least the rotational part and, on the other side, a second compartment for receiving at least the electronic processing unit.

Abstract: A method of producing a sand mold, comprising: after defining a mold space at least by a pattern plate, a flask, and a squeeze means, and after blow-charging molding sand held in a sand blowing device located above the mold space into the mold space by ejecting a first compressed air near sand ejecting ports of the sand blowing device thereby fluidizing the molding sand near the sand ejecting ports, while supplying a second compressed air to a surface of the molding sand held in the sand blowing device, moving the squeeze means toward the pattern plate, where in the pressure of the first compressed air and the period of time for supplying the first compressed air are adjusted to produce a good sand mold.

Abstract: A die-casting machine using an electric servo motor as a driving source for injecting/filling molten metal into a cavity of a mold through an injection sleeve. The molten metal in the injection sleeve is injected/filled into the cavity by an injection member. During the course between the stage when the molten metal has not reached a gate of the mold yet and the stage when the molten metal begins to pass the gate of the mold, the speed of the injection member is controlled to be accelerated in a smooth speed characteristic curve which does not have a broken-line characteristic. Thus, rising to a high injection speed can be attained rapidly and smoothly.

Abstract: A mold and a die-cast manufacturing method for the die-cast product, in which a main frame which is contiguously formed with a head pipe constitutes a portion of a hollow light-weight-metal-made vehicle-body frame. The mold includes a core for forming an inner space of the hollow vehicle-body frame. The core includes a core body and a plurality of splints mounted on the core body, the splints having approximately elliptical cross-sectional shapes. The long axes direction of ellipses of the splints are set parallel to a mold split surface of the mold. As a result, measurement of the positional accuracy of the splints is facilitated, a clearance between the splint and the mold can decrease by increasing the dimensional accuracy of splint mounting portions of the mold based on sizes of the splints, and the frame can be manufactured with high dimensional accuracy.

Abstract: The invention relates to a method for producing a magnesium hot strip, in which a melt from a magnesium alloy is continuously cast to form a roughed strip with a thickness of maximum 50 mm, and in which the cast roughed strip is hot-rolled directly from the cast heat at a hot-rolling initial temperature of at least 250° C. and maximum 500° C. to form a hot strip with a final thickness of maximum 4 mm, whereby in the first hot-rolling pass a reduction in the thickness of at least 15% is achieved. With the method according to the invention, magnesium sheets with improved deformability can be produced with reduced manufacturing effort and expenditure.

Abstract: A heat pipe includes a hollow metal casing (100) and a honeycombed wick structure (200) arranged at an inner surface of the hollow metal casing. The wick structure includes a plurality of slices (210, 220) stacked together. Each of the slices has a plurality of pores therein and a plurality of protrusions (222) formed thereon along a longitudinal direction of the heat pipe to form a plurality of liquid channels (230) in the wick structure along the longitudinal direction of the heat pipe. Each liquid channel has alternate large and small sections (232, 231) along a length thereof.

Abstract: The present invention is directed to a modular heat dissipating device that consists of a plurality of sheet and beam members which are connected together by heat pipes. The sheet or support fin member is constructed by folding a piece of heat conducting material which is then mounted on a beam member. There are individual compliant interfaces built into the fin members such that a good thermal contact can be ensured with the heat generating semiconductor devices. The modular heat dissipating devices can be stacked up to gain higher cooling capacity or spread around to cover multiple chips on a printed-wiring board.

Abstract: A shield for placement around burner ports in a hot air furnace for reducing turbulence in the flow of secondary combustion air entering a heat exchanger. The shield also provides for intercepting moisture that condenses along the walls of the vertically oriented heat exchanger. The heat exchanger is part of a furnace. The drip shield includes a plate having a longitudinal axis and a plurality of through-openings placed in the plate along and/or parallel to its longitudinal axis. The through-openings are spaced apart so as to be positioned between and aligned with burner ports and respective heat exchanger tube inlets of the heat exchanger. The plate is preferably profiled to have a peak to encourage condensate run-off with the plurality of through-openings being placed along or generally parallel to the peak of the plate.

Abstract: An evaporator 1 comprises a heat exchange core 4 having heat exchange tubes 12 in groups 13, a refrigerant inlet header 5 and a refrigerant outlet header 6 which are arranged toward one end of each of the heat exchange tubes 12, and a refrigerant inflow header 9 and a refrigerant outflow header 11 which are arranged toward the other end of each heat exchange tube 12. The outflow header 11 has its interior divided by a flow dividing control wall 52 into two spaces 11a, 11b arranged one above the other. The inflow header 9 and the lower space 11b of the outflow header 11 are held in communication each at one end thereof. The control wall 52 has a plurality of refrigerant passing holes 53 arranged at a spacing longitudinally thereof.

Abstract: A plurality of heat exchange units (12) are placed in a frame (38). Respective heat exchange units (12) are positioned by pin holes (30) formed in fixing plates (21) installed on the heat exchange units (12) and knock pins (29) formed on a pair of bars (22) of the frame (38). The one side tank water inlet/outlet ports (19) and the other side tank water inlet/outlet ports (20) of the heat exchange units (12) are connected to the one side water receiving ports (35) of an upper tank (17) and the other side water receiving ports (36) of a lower tank (18), respectively. The upper tank (17), the heat exchange units (12), and the lower tank (18) are fixed to the frame (38) to form the heat exchanger (11). Thus, the heat exchanger having a specified heat exchange capacity and firmly supportable on a base can be provided.

Abstract: An evaporator includes a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction. A drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes. A gap is present between each of the adjacent front and rear heat exchange tubes, and the drainage acceleration member disposed between the front and rear heat exchange tubes. The gaps serve as drain channels. The evaporator exhibits excellent drainage of condensed water.

Abstract: The invention relates to a hollow chamber profile made of metal, especially for heat exchangers. Said profile is made of an extruded base profile (10) having two broad parallel sides and two narrow sides or is made of a base profile which is a circular tube type or coaxial tube type. At least one channel (11) extends inside said base profile in the longitudinal direction thereof. The hollow profile has improved heat transfer properties on the sides and webs (13) which are deformed perpendicular to the longitudinal direction thereof.

Abstract: A vehicle air conditioner casing has defrost, face, and front seat floor vents variably communicating with a mixing chamber. Air passageways in the casing include an evaporator and heater core. A rear seat console vent communicates with a warm air passageway including the heater core and a cool air passageway through a console side cool air bypass passageway on the casing bottom surface, under the heater core. A front seat temperature adjusting door adjusts variably opens cool air passageway outlets and the warm air passageway with respect to the mixing chamber. A rear seat main temperature adjusting door variably opens warm air passageway inlets and the console side cool air bypass passageway. A rear seat auxiliary temperature variably adjusts the openings of warm air passageway outlets and the console cool air bypass passageway with respect to the rear seat console vent.

Abstract: A drill string in a borehole can be cut at the drill collars. A torch is lowered into the drill string and positioned at a joint of the drill collar string. The joint has a pin component and a box component. The torch has one or more openings in the pattern of a vertical slot. The torch is ignited and the pin component is cut in a direction along the length of the drill string. The joint uncoupled, even though the box component need not be cut. The uncoupling of the joint effectively cuts the drill string at the joint.

Abstract: A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end portion above the tubular member and second end portion below the first end portion. A hanger may be suspended within the tubular member. In such case, a seal may be formed between the elongate annular member and the hanger.

Abstract: A stabilizer to suppress unwanted pivotal movement in pipe handling equipment suspended from bails. The stabilizer can contain either or both adjustable contacting members and non-adjustable contacting members which are rigidly connected to a portion of the pipe handling equipment. The adjustable contacting members contact the bails on one or both sides of the bail(s) to suppress motion of the elevator relative to the bail.

Abstract: Apparatus for expanding first and second portions of a downhole tubular in a single trip comprises a support and first and second expansion devices. The first expansion device is mounted on the support and is operable to expand a first portion of tubular. The second expansion device is mounted to a second portion of tubular and is adapted to be engaged by the support following the expansion of the first portion of tubular, and is then used to expand the second portion of tubular.

Abstract: A field joint used to connect downhole tool modules. The field joint includes a bulkhead, a connector block, and various electrical connections. The bulkhead couples to a first tool module and has a first connection face, which partially defines an exterior of the first tool module and has a first conduit aperture that receives an electrical connector assembly. An electrical connector assembly received in the first conduit aperture is releasably coupled to the exterior of the first tool module, and includes a first connector. The connector block is coupled to a second tool module and has a second connection face defining a second conduit aperture positioned to face the first conduit aperture when the tool modules are joined. A second electrical connector disposed in the second conduit aperture establishes electrical contact with the first connector when the first and second tool modules are joined.

Abstract: Disclosed herein is a method comprising disposing in a formation fracture, a proppant and/or a fracturing fluid that comprises a radiation susceptible material that comprises indium and/or vanadium; irradiating the radiation susceptible material with neutrons; measuring gamma-radiation emitted from the radiation susceptible material in a single pass; wherein the single pass does not involve measuring of background radiation from previous or subsequent logging passes; and determining formation fracture height from the measured gamma-radiation.

Abstract: A method of recovering hydrocarbons from a porous subterranean hydrocarbon-bearing formation by: (a) reducing the salinity of a saline source water by reverse osmosis using a membrane having a first surface and a second surface by (i) feeding the saline source water to the first surface of the membrane, and (ii) removing treated water of reduced salinity from the second surface of the membrane; and (b) injecting the treated water into the formation; wherein the membrane is selectively permeable to water over dissolved solids such that when (i) the saline source water has a total dissolved solids content of at least 17,500 ppm, and (ii) the applied pressure across the membrane is greater than the osmotic pressure across the membrane and lies within the range 45 to 90 bar (4.5 to 9.0 M Pa), the total dissolved solids content of the treated water is in the range 500 to 5000 ppm.

Abstract: A subterranean formation having natural fractures, which is to be subjected to hydraulic fracturing, is first pre-treated with an ultra lightweight (ULW) proppant having an average particle size between from about 12/20 to about 40/70. The small ULW proppant flows into the natural fractures and packs the fractures. The formation is then subjected to hydraulic fracturing. The pre-treatment serves to enhance the effective propped fracture length of the formation during the hydraulic fracturing by reducing the loss of fluid from the subsequently pumped fracturing fluid. The method is applicable to hydrocarbon bearing formations as well as non-hydrocarbon bearing formations and has particular applicability to coal beds.

Abstract: A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.

Abstract: A casing exit joint with an easily milled and low density barrier. A casing exit joint for use in drilling a lateral wellbore outwardly from a parent wellbore includes a generally tubular window structure having a window formed through a sidewall of the structure. An outer sleeve is disposed external to the window structure, so that the sleeve overlies the window. A hardenable substance supports the sleeve against deflection toward the window. A method of drilling a lateral wellbore extending outwardly from a parent wellbore includes the steps of: providing a casing exit joint including a hardenable substance positioned in a sidewall of the casing exit joint; then installing the casing exit joint in the parent wellbore; and then cutting through the hardenable substance in order to provide access for drilling the lateral wellbore.

Abstract: Carbon dioxide is sequestered in a formation using a dual completion and injection method that reduces or eliminates upward leak rates of the sequestered carbon dioxide. The dual completion and injection method involves the injection of a benign fluid such as brine (water) into a permeable layer of the formation located above the sequestration layer and which is separated form the sequestration layer by a nearly impermeable layer. The water is preferably injected at the same time the carbon dioxide is injected.

Abstract: A method and apparatus for ratcheting a stimulation tool in a well in which the stimulation tool is movable from a first radial position to a second radial position without moving the tool string.

Abstract: A method of treating a shale-containing subterranean formation penetrated by a wellbore is accomplished by forming a carbon dioxide treatment fluid having a viscosity of less than about 10 mPa-s at a shear rate of about 100 s?1. The carbon dioxide treatment fluid is introduced into the formation through the wellbore at a pressure above the fracture pressure of the formation. In certain embodiments, the treatment fluid may be comprised of from about 90% to 100% by weight carbon dioxide and may contain a proppant. A method of treating hydrocarbon-bearing, shale-containing subterranean formation penetrated by a wellbore may also be carried out by forming a carbon dioxide treatment fluid and introducing the carbon dioxide treatment fluid into the formation through the wellbore at a pressure above the fracture pressure of the formation. The formation being treated may have a permeability of less than 1 mD.

Abstract: A utility line connector assembly having a male stab having a central bore with a port that communicates with a second bore in a receptacle where the stab is fixedly inserted into a receiving female opening in the receptacle, the receptacle has an L shaped opening with a protruding partial spherical pocket, a ring groove for sealing said stab to a riser package, and where the stab and receptacle are placed between a lower marine riser and the blow out preventer in fluid communication therebetween. The stab and receptacle may be sealed with ring seals and the assembly may be used in riser auxiliary line connections, sub sea production tree connections, drape hose connections and surface bop auxiliary line connections.

Abstract: A trigger device for setting a downhole tool is disclosed. The trigger device includes a retaining member that prevents the downhole tool from setting until it is properly positioned within the well. Regardless of the type of downhole tool or the type of trigger device, the retaining member includes a dissolvable material that dissolves when contacted by a solvent. The dissolvable material is preferably one that dissolves at a known rate so that the amount of time necessary for the downhole tool to set is pre-determined. Preferably, the solvent is a water-based or hydrocarbon-based drilling fluid or mud.

Abstract: An isolation assembly for downhole injection use is described that features at least one isolation device mounted on a tubular so that when injection fluid changes the tubular temperature which can cause a length change in the tubular, an anchor for the tubular is provided to resist such a dimension change. The result is that the isolation device such as a packer can be left undamaged and retaining its sealing integrity. The anchor can be an inflatable or telescoping pistons disposed to grab in open hole. When using telescoping pistons, their placement on the liner and their pattern can meet the desired locations where grip is enhanced. Use of cement inflatable anchors is contemplated as an alternative.

Abstract: A fire suppression system is disclosed. The system includes a source of pressurized gas and a source of pressurized liquid. At least one emitter is in fluid communication with the liquid and gas sources. The emitter is used to establish a gas stream, atomize and entrain the liquid into the gas stream and discharge the resulting liquid-gas stream onto the fire. A method of operating the system is also disclosed. The method includes establishing a gas stream having first and second shock fronts using the emitter, atomizing and entraining the liquid with the gas at one of the two shock fronts to form a liquid-gas stream, and discharging the stream onto the fire. The method also includes creating a plurality of shock diamonds in the liquid-gas stream discharged from the emitter.

Abstract: Non-reactive test agents may be used to test fire suppression systems in which reactive fire suppression agents may be used to release catalytic fire suppression agents for transport by naturally occurring flows paths downstream to the vicinity of flame holding regions for fire suppression for example, in aircraft.

Abstract: The present invention relates to an inertization process for decreasing a risk of fire and for extinguishing fires in a protected room, wherein an oxygen concentration in the protected room is first lowered to a specific base inertization level, and wherein the oxygen concentration in the protected room is maintained at the base inertization level. In the event of a fire, additional inert gas is introduced based upon the extent of the fire in the protected room to further decrease from the base inertization level to a first lowered level. The oxygen concentration is maintained at the first lowered level for a first preset time interval, and further decreased from the first lowered level to a full inertization level, if the fire has not yet been extinguished once the first preset time interval has elapsed.

Abstract: An apparatus for remote inspection of fire extinguishers at one or a system of fire extinguisher stations includes, e.g., at each fire extinguisher station: a detector for lack of presence of a fire extinguisher in its installed position at the fire extinguisher station; a detector for out-of-range pressure of contents of the fire extinguisher at the fire extinguisher station; a detector for an obstruction to viewing of or access to the fire extinguisher at the fire extinguisher station; and a device for communication of inspection report information by wireless signal between the fire extinguisher station and a remote central station.

Abstract: A tightening tool for tightening a fastener is disclosed which comprises a motor and a main shaft that engages with the fastener. A clutch is disposed between the motor and the main shaft so that the clutch rotates the main shaft by transmitting torque from the motor to the main shaft when a load acting on the main shaft is less than a predetermined value. The clutch shuts off torque transmission from the motor to the main shaft when the load acting on the main shaft reaches or exceeds the predetermined value. When in use, the current flowing to the motor and rotation angle of the main shaft of the motor are detected. The detected current and rotation angle are used to determine whether the tightening torque of the fastener is normal.

Abstract: A tool holder for a powered hammer includes a tool holder housing. An actuator is coupled to the tool holder housing and is moveable among a range of operating positions that include a first position where the actuator locks a tool within the tool holder by engaging a rib on the tool, a second position where the actuator locks a tool within the tool holder by engaging a recess in the tool, and a third position where the actuator allows a tool to be released from the tool holder. An actuator locking mechanism releasably locks the actuator in at least the third position.

Abstract: An air spring hammer device that includes a drive piston, moving axially back and forth, with a front face of hollow embodiment and a hammer piston moving in said hollow. A ventilation slot is embodied in a guide wall of the drive piston. The drive piston may be guided in a guide tube. The guide tube comprises several idle openings. A moving control element is arranged on the exterior of the guide tube, in which control openings, corresponding to the idle openings, are provided. In an idle operating mode, the control element is in an open position, via which the ventilation slot, the idle openings and the control openings can be brought into connection with the environment.

Abstract: The fixed cutter drill bit disclosed utilizes a unique piloting section and reaming section carefully designed to impart several specific operational advantages. In the piloting section, cutting structures have been arranged so as to create offsetting cutting forces that result in a net zero imbalance during operation. Furthermore, the piloting section utilizes carefully placed shock studs which aid in protecting the primary cutting structure. In addition, the location of the fluid supply nozzles on the body of the reamer section serves to indicate the occurrence of a catastrophic cutting structure failure below the pilot gage.

Abstract: A well drilling head housing comprises a sidewall structure, a ram and selective displacement means. The sidewall structure defines a central bore configured for having a bearing assembly removably seated therein. The ram is slideably mounted on the side wall structure and is disposed within a passage extending through the sidewall structure. The selective displacement means is coupled between the ram and the sidewall structure. The selective displacement means is configured for moving the ram to an engaged position in which the ram is engaged with the bearing assembly for securing the bearing assembly in a seated position within the central bore and a disengaged position in which the ram is disengaged from the bearing assembly thereby allowing the bearing assembly to be removed from within the central bore.

Abstract: The invention relates to a water collecting device (30) intended for a core drilling unit (1) that comprises a drilling machine including an electric drilling motor (6), a machine housing (3) with an output shaft (9), that can be composed of many sections, a core drill (4) connected to the machine shaft and means to supply cooling water, as required, to the cylindrical inner part of the of the core drill via the machine shaft (9). The water collecting device (30) comprises a vessel (31) with a bottom (32) and a side wall (33), the bottom (32) positioned below the core drill (4), the vessel (31) arranged to collect spent water as well as drill cuttings from the core drill (4), the vessel (31) further comprising at least a draining duct (58) for drainage of spent water as well as drill cuttings from the vessel (31). The invention also relates to the core drilling unit equipped with the water collecting device.

Abstract: Apparatus and a method for adding and removing tubulars whilst containing the pressure within a drill string and/or maintaining circulation of drilling fluid down a drill string using a diverter sub which is able to open up to mud flow from a side mud port and close off the flow of mud from above the drill string with or without continuous rotation of the drill string.