Abstract: A lean blowout protection system and method is provided that facilitates improved lean blowout protection while providing effective control of turbine engine speed. The lean blowout protection system and method selectively and gradually biases the lean blowout (LBO) schedule based on current engine data. This facilitates improved lean blowout protection while providing effective control of turbine engine speed and temperature.

Abstract: Mechanically heated and cooled clothing with easy-to-use controls is provided. An embodiment comprises an athletic shoe with temperature controls and electrical wiring. A heating and cooling unit attached to the shoe comprises a thermostat, a cooling device, and a heating device. Temperature transfer means in the shoe, such as electrical heating elements and loops for liquid heat exchange, accomplish desired heating and cooling of the shoe. The temperature controls may comprise on, off, hot, and cold buttons for activating the heating and cooling unit and controlling the temperatures. The system may be attached to the shoe or attached to other items and worn elsewhere, such as to a belt worn about the user's waist. The system may also be used with other types of clothing, for example with gloves.

Abstract: An active moisture control barrier is provided which comprises a layer of shape memory polymer and a heating arrangement associated with the layer of shape memory polymer. The barrier may be used to provide an active humidity controlled space having an enclosure with walls to separate an interior of the enclosure from an environment surrounding the enclosure. An opening in one of the walls allows communication between the interior of the enclosure with the environment. A layer of shape memory polymer is provided at the opening to isolate the interior of the enclosure from the environment. A control may be provided for the heating arrangement to allow for a heating of the layer to a level as controlled or set by a user. An air passage conduit may extend from the interior of the enclosure through a zone of relatively higher water vapor pressure.

Abstract: An electronic HEMD determines the optimum balance between gas cooling and heat exchanger pressure loss, for any given operating condition, and adjusts the gas flow rate through the exchanger accordingly, to yield the maximum net power savings (and thereby energy savings) afforded by the exchanger. Maintaining the optimum balance between cooling and exchanger pressure loss reduces the amount of energy required to transport a given volume of gas through a pipeline and thereby increases the transmission efficiency of the gas pipeline system. A method of operating a heat exchanger on a natural gas transmission pipeline using a control algorithm that in turn controls the position of a heat exchanger bypass valve.

Abstract: A refrigerator and a control method thereof in which a plurality of storage compartments are cooled based on their cooling priorities, which are determined in accordance with a set temperature or thermal load of each storage compartment, whereby the storage compartments can maintain high humidity.

Abstract: An operation of a multi-type air conditioner, which includes a refrigerant distributor provided between one outdoor unit and a plurality of indoor units is controlled. A refrigerant supply controller determines indoor temperatures of a plurality of indoor units, decides to operate a compressor on the basis of the determined indoor temperatures, and transmits the determined operation of the compressor to an outdoor unit controller. The refrigerant supply controller determines the temperature of a refrigerant supplied to a plurality of operational indoor units and the temperature of a returned refrigerant, and adjusts the degree of opening/closing of a plurality of electronic expansion valves according to a difference between the determined temperatures of the supplied refrigerant and the returned refrigerant such that the amount of the refrigerant supplied to a plurality of indoor units are adjusted.

Abstract: The invention provides a refrigerator having a compressor, the refrigerator including: a motor driving the compressor; a motor driver supplying power to the motor; and a controller outputting a control signal corresponding to a second command speed to the motor driver, and outputting a control signal corresponding to a first command speed which is higher than the second command speed to the motor driver when a driving on/off ratio of the motor driver is maintained below a given reference driving on/off ratio for a given reference period. Accordingly, it is an aspect of the present invention to provide a refrigerator to operate a compressor stably and easily under overload or low voltage conditions, and a method for controlling the same.

Abstract: A vehicular air-conditioner includes a compressor to be driven by an engine. The vehicular air-conditioner includes a controller configured to reduce a load on the compressor in response to a braking condition of a vehicle.

Abstract: A hybrid car and system having air-conditioner control in the idle stop mode and a method of controlling an air-conditioner of the hybrid car in an idle stop mode to reduce impact caused by applying brake and energy consumption when the hybrid car starts up are provided. The hybrid car and system includes an internal combustion engine, an electric motor to supply power to the hybrid car together with the internal combustion engine, an air-conditioner which is powered by the engine and the motor, an engine control unit controlling run/stop switching so that the air-conditioner is powered by the engine and the motor, and a hybrid control unit determining when the engine control unit to control the run/stop switching of the air-conditioner by using current velocity information transmitted from a velocity sensor and transmitting a run/stop switching order to the engine control unit.

Abstract: Air conditioning unit (1) suitable for stand-alone operation in a motor vehicle includes a refrigerant circuit (2) that has a compressor (3), a condenser (4) and an evaporator for cooling air which is to be conditioned, as well as at least one evaporator blower and a condenser fan (5) which can be driven by a motor (8). The motor (8) for the compressor (3) is arranged in an air duct (11), so that the motor (8) is actively ventilated with air in the air duct (11).

Abstract: An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's ability to dehumidify air.

Abstract: A packaged air conditioner or heat pump unit is provided with an elongated removable drain pan having an inner longitudinal portion that underlies and receives condensate falling from the portion of the unit's indoor coil positioned within the conditioned air flow through the unit. An outer longitudinal portion of the drain pan underlies tubing portion return bends of the coil positioned outside of the conditioned air flow and separated from the inner longitudinal pan portion by a vertical dividing wall having a small condensate transfer hole therein. During cooling operation of the unit, the unit blower creates a negative pressure inwardly adjacent the hole which draws return bend condensation from the outer longitudinal pan portion into the inner longitudinal pan portion for drainage outwardly therefrom, with the condensate received from the balance of the coil, via a drain line connected to the pan.

Abstract: A valve assembly for a refrigeration system having a casing comprising a plurality of apertures, a first rotatable valve member comprising a first passageway and a second rotatable valve member comprising a second passageway where the first and second valve members may be coupled to define various fluid passageways.

Abstract: A refrigerator which includes an outer case defining the outer appearance of the refrigerator, the inner case received in the outer case and defining a storage compartment, the insulation member filled in a gap between the outer case and the inner case for heat insulation, and a noise attenuation member disposed between an outer surface of the inner case and the insulation member to induce a sliding movement between the inner case and the insulation member. The insulation member is slidable relative to the insulation member when the inner case expands or contracts in accordance with a variation of temperature, whereby the generation of frictional noise due to friction between the inner case and the insulation member can be greatly reduced.

Abstract: The invention relates to a braking device for a motor vehicle fitted with an air conditioning circuit (K), this braking device comprising a source of fluid (F1) at a relatively high pressure, a source of fluid (F2) at a relatively low pressure, and a pneumatic brake booster (F3) selectively connected to one or other of the sources of fluid (F1, F2). According to the invention, the source of fluid (F1) at a relatively high pressure comprises a portion (KC1) of the air conditioning circuit (K) that is placed downstream of the air conditioning compressor (K1) and upstream of the air conditioning expansion valve (K2), in one direction of flow (X) of the cooling fluid in the air conditioning circuit (K).

Abstract: A refrigerator having an insulated cabinet and a door pivotally mounted to the cabinet having an exterior face including a dispenser cavity. An ice maker in the refrigerated storage space is arranged to make and harvest ice pieces. An ice delivery system on the inside of the door dispenses ice pieces into a dispenser cavity in the exterior face of the door. The ice delivery system can include an ice bin including a generally open top and having a bottom opening pivotally mounted on a horizontal axis below the ice maker. The ice can receive ice pieces harvested by the ice maker and discharge ice pieces through the bottom opening and the ice delivery system in a first position. The ice bin can tilt out to permit access to ice pieces, and can be removed from the ice delivery system, in a second position when the door is open.

Abstract: An environmental control system for an aircraft cabin includes a plurality of electrically-driven ported shroud cabin air compressors, each cabin air compressor compressing ram air received from the aircraft exterior, a heat exchange circuit comprising a primary heat exchanger receiving airflow from at least one of the cabin air compressors, and the secondary heat exchanger supplying airflow to the aircraft cabin, and an air cycle machine comprising a compressor adapted to receive airflow from the primary heat exchanger and supply compressed air to the secondary heat exchanger. The environmental control system may further comprise an air recirculation system, having an aft recirculation fan adapted to receive a portion of recirculation air from the aircraft cabin, and a recirculation heat exchanger, disposed in the heat exchange circuit in series with the primary and secondary heat exchangers, and adapted to receive airflow from the aft recirculation fan.

Abstract: A receptacle for placement in a cooler of ice. The receptacle includes a sleeve structure placement in the cooler's ice compartment, the sleeve structure having a base portion and a chamber for receipt of a drink bottle or container, food item, medicine, or other items which require, or for which it is desirable, to maintain as chilled. The chamber is configured such that upon placement of the sleeve structure into the ice compartment and being surrounded by ice, the item to be cooled is substantially isolated and free from contact with the ice. The receptacle maintains an open volume in the ice for an item and allows for the item to be withdrawn from the cooler, without ice in the cooler collapsing and filling in the void left by the removed item. This allows the item may be readily reinserted back into the cooler when desired.

Abstract: The separation efficiency of non-condensable gas in the separation membrane is enhanced in a refrigeration device provided with a configuration whereby non-condensable gas remaining in the refrigerant connection pipes at the time of on-site installation can be separated and removed from a state of mixture with the refrigerant in the refrigerant circuit using a separation membrane. An air conditioning device 1 comprises a heat source unit (2) and a utilization unit (5) connected via a refrigerant connection pipe (6, 7) to form a refrigerant circuit (10), and has a cooler (32), a secondary receiver (33), and a separation membrane device (34). The cooler (32) cools at least a portion of the refrigerant that flows through the liquid-side refrigerant circuit (11) as the compressor (21) is operated and the refrigerant in the refrigerant circuit (10) is recirculated.

Abstract: A branching pipe joint includes a substantially Y-pipe shaped branch part, a first branch nozzle part, a second branch nozzle part, and a first branch pipe. The first branch pipe has an end connected to a tip part of the first branch nozzle part during plumbing work. The first branch nozzle part and the second branch nozzle part are disposed so that a spacing between a portion of the tip part of the first branch nozzle part nearest the second branch nozzle part side and a portion of the second branch nozzle part nearest the tip part of the first branch nozzle part is less than or equal to 40 mm.

Abstract: A compressor for the refrigeratory equipment is provided. The compressor includes a casing having a compressing device mounted therein and a cooling pipe passing through the casing for cooling the compressing device.

Abstract: A process and apparatus for the liquefaction of natural gas including at least one liquid expander for providing expansion of a high-pressure stream and powering a generator capable of producing electricity to be used to drive a compressor located elsewhere in the liquefaction apparatus. Particularly, a liquid expander is used to expand a high-pressure refrigerant stream and to power an electrical generator. The electricity provided by the generator can be used to power a compressor located in the same or a different refrigeration cycle as the liquid expander.

Abstract: A necklace/bracelet connector includes a loop extended from the rear end of an axial barrel, characterized in that an axial barrel has a circular hole at its front end, and the width of its rear end is substantially corresponding to the circular hole, and the length is equal to the length of a long circular hole, elliptic circular hole, or an “8”-shaped hole, which is at least 1.4 times of the circular hole to define a flared barrel. Both ends of a chain are passed through the barrel in a direction from the front to the rear and then bent 180 degrees and inserted back into the barrel without using a stamping or adhering process. Users can change a chain with a new chain or a chain of other material or color, or can replace a pendant of a different model by their bare hands.

Abstract: A modified princess cut diamond and method of forming a modified princess cut diamond into a symmetrical shape possessing a hearts and arrows pattern characteristic of the true hearts and arrows pattern in a round cut diamond.

Abstract: Described are photochromic ocular devices such as contact lenses and intraocular lenses made of an organic polymeric material and at least one photochromic material capable upon exposure to actinic radiation to change from a less ultraviolet radiation absorbing unactivated form to a more ultraviolet radiation absorbing activated form. The photochromic ocular device is capable upon exposure to actinic radiation to exhibit a ratio of greater than 0.5:1.0 of increased ultraviolet radiation absorbance to increased visible radiation absorbance as measured in the Ultraviolet Photochromic Performance Test described herein.

Abstract: This invention relates to a “method and facilities of manufacturing optical components and end items”, producing optical components by molding of separately heating glass and a mold, said manufacturing facilities comprises of a glass furnace and a glass molding machine. The glass furnace is applied to heat glass into a molten state and the mold is heated to temperature at 400˜500° C. in a glass molding machine. When molten glass passes through a furnace mouth comprising of a cooling pipeline and flows down on the mold of said glass molding machine, a cap, which is set inside the mold. It has a plurality of grappling hooks projecting outwards on the perimeter of the cap opening, during the shaping process, to be bent into claws and directly positioned inside the coagulated glass. Consequently, an optical component item is completed and integrated with said cap in one piece after molten glass is coagulated and shaped at one time.

Abstract: A gas control device for a fiber cooling system includes an inner fiber flow passage extending in a longitudinal direction of the device to facilitate travel of a fiber through the device. The device further includes a chamber that is separated from and at least partially surrounds the inner fiber flow passage, a flow stabilizer region that facilitates and controls gas flow between the inner fiber flow passage and the chamber, and a gas flow port in fluid communication with the chamber to facilitate withdrawal of gas from the inner fiber flow passage into the chamber and removal of the withdrawn gas from the chamber and the device during travel of the fiber through the device.

Abstract: A linear knitting machine (1) comprising a loom, at least one needlebed (3) associated with the loom, a plurality of needles (4) sliding in the needlebed (3), means for feeding the needles (4) with a yarn for building a new stitch and knock-over means (8) cooperating with said needles (4) on the needlebed (3) and moving between a forward position, which occurs when the needle (4) is lifted, in which they act upon said stitch so as to keep it on the stem (5) of the needle (4), and a rear position, when the needle (4) gets down, in which they do not act upon the stitch. The machine (1) is characterized in that it further comprises holding means (15) fastened to the loom and discharging means (19), associated with the knock-over means (8), which can be engaged with said holding means (15) in forward position for discharging onto the loom the force generated by the knock-over means (8) when keeping the stitch, and which can be disengaged from the holding means (15) in rear position.

Abstract: A knitting needle for knitted sueded fabric is provided. The needle includes a shank, a hook, a latch, and an abrasive surface. The abrasive surface is defined on the shank, the hook, the latch, and any combinations thereof. A method of knitting a sueded fabric is also provided. The method includes forming an abrasive surface on a knitting needle, moving the knitting needle through a knitting cycle, and moving a yarn across the abrasive surface to form fibrils on the yarn as the knitting needle is moving through the knitting cycle.

Abstract: The present invention aims to provide a seamless glove of high support performance knitted by flat knitting. The seamless glove has a base knitted fabric set up knitting from a tip of finger toward a mouth or from the mouth toward the tip of finger and knitted in such a manner that respective fingers, a four-finger body, a five-finger body are knitted on a rib knit structure basis using a stretch elastic yarn, and an elastic yarn in a tensed state is inlaid in the base knitted fabric. The base knitted fabric is knitted on a rib jacquard structure basis, and the inlay yarn is knotted at a location at which the knitting of the finger starts and at a finger crotch part, to prevent cast-off of the inlay yarn.

Abstract: This invention relates to functional socks which provide appropriate and variable compression on the various parts of foot. The functional compressive socks of this invention comprise the parts including shin, calf, instep, toe, heel, and sole. The said socks are characterized by the fact that all those said parts are subject to appropriate compression by part, and in addition, the said parts of shin, calf, instep, and sole are knitted with high elasticity yarn as the elastic threads and the core yarn single covered with polyurethane based long staple or long staple copolymer fiber as the inner threads, while the said parts of toe and heel are knitted with the core yarn single covered with polyurethane based long staple or long staple copolymer fiber as the inner threads, in appropriate ratio set respectively by the characteristics of the part.

Abstract: A laundry machine is disclosed. The laundry machine includes an image display for displaying various images. In more detail, the laundry machine includes a main body and the image display installed in the main body to display the image data on a screen. The image display may be a liquid crystal display, a plasma display panel, or the like.

Abstract: The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for pumping out wastewater, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow-rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow-rate at a desirable level.

Abstract: A tub having a structurally strengthened rear wall and a washing machine with the same therein are disclosed. A washing machine includes a bearing housing having a flange part and a tub injection-molded with the bearing housing inserted into a wall thereof, the wall having a recessing part and a projecting part formed on an inner or an outer surface thereof along a circumferential direction, and a circumferential rib or a radial rib formed on the recessing part.

Abstract: A tub assembly and a washing machine including the same are disclosed. A tub assembly of a washing machine includes a front tub having an entrance formed in a front portion thereof for introducing the laundry, and a rear tub having a front portion vibration-welded to a rear portion of the front tub by a vibration-welding device and a rear portion with a bearing housing provided therein. A washing machine includes a cabinet for defining an exterior thereof, a tub assembly provided within the cabinet for holding wash water and the laundry, and a motor for transmitting power to the tub assembly. An object of the present invention is to provide a tub assembly which can be manufactured without any difficulties in spite of a front tub having a complex structure.

Abstract: An induction motor for a drum washing machine and a drum washing machine using the same are disclosed. An induction motor for a drum washing machine includes: a concentrated winding stator with a plurality of teeth that project from a circumference thereof and a coil wounded around each tooth; a rotor frame connected to a shaft directly fixed to a rotatable drum in the drum washing machine, wherein the concentrated winding stator is located in the rotor frame; and a rotor conductor that generates induced currents in closed circuits along a circumferential direction of the rotor frame when electric currents are applied to the coils so that the rotor frame rotates, wherein the closed circuit is skewed.

Abstract: A laundry machine includes a drum having an opening for receiving laundry to be laundered by the laundry machine, and a hopper mounted on the drum. The hopper includes a first open end for receiving laundry therethrough, and a second open end for communicating with an opening defined by the drum. The first and second open ends define a passage therebetween for the laundry, and the hopper is movable from a loading position in which the first open end is positioned substantially parallel to a ground surface supporting the machine and an unloading position in which the hopper is at least partially removed from the laundry machine drum to allow the laundry to be unloaded from the drum. The first open end can be substantially perpendicular to the second open end. The machine does not have to be tilted relative to the ground surface to receive laundry in the hopper.

Abstract: This invention and disclosure are directed to apparatus and methods for securing a lock from being unlocked by an unauthorized method or mechanism. Apparatus and methods are disclosed herein regarding positioning of shackles and latch members of locking mechanisms. In one embodiment of the invention apparatus and methods incorporate a spring to bias a shackle within a lock. The biasing of the shackle positions a latch member in such a manner to offer greater security against unauthorized opening of a lock.

Abstract: A disc box includes a base, a securing member and a key member. The base has a lid and a body, which has a lateral side connected to that of the lid. The lid and the body include latching portions opposite to each other and key-reception portions adjacent to the respective latching portions. The latching portions are formed at an internal edge of the lid and the body respectively. The securing member is received in the latching portions for locking the lid and the body together so that the disc box is burglarproof. The key member is arranged inside the key-reception portions in order to reject the securing member that is clamped in the respective latching portion in advance. When the key member is drawn out, the securing member can be removed out at the same time.

Abstract: A lock mountable to a displaceable wing (1) including a casing (5) and operating means including at least one hand operable unlatching lever (109) operable in an unlatching direction to cause a corresponding unlatching cam (101) to displace in an unlatching direction, an engaging member (7) supported by the casing and displaceable between a fully displaced disposition and a fully retracted disposition, the unlatching cam being operably connected to the engaging member by an angularly displaceable unlatching rocker (87) supported at a pivotal joint (333) disposed between the engaging member and the unlatching cam, the unlatching rocker having a first arm (88) operably associated with an unlatching arm of the unlatching cam and a substantially opposed second arm (90) operably associated with the engaging member, the unlatching cam being displaceable in an unlatching direction to cause unlatching arm to displace the first arm of the rocker to displace the second arm in the opposite direction to thereby cause the

Abstract: In a lock with a locking cylinder (3), the locking cylinder (3) has a knob (30) on one side and on the other side has a lock channel for insertion of a key (31). The lock has two split hubs (4, 5) on top of one another for triggering a locking element (6). Furthermore, the lock has a positioning element (24) which establishes whether blocking of the locking element (6) produced by the locking cylinder (3) can be canceled by actuation of the split hubs (4, 5). A projection (21) which is located on a plate (20) which interacts with the positioning element (24) establishes from which side this blocking can be cancelled.

Abstract: A lock bolt is engages with a recess formed on the surface of the steering shaft. In a locked position, the lock bolt engages the recess of the steering shaft. In an unlocked position, the lock bolt is withdrawn and disengaged from the recess. When the ignition key is turned to start the automobile, the lock bolt disengages the steering shaft. When the ignition key is turned to stop the automobile engine from idling, the lock bolt engages the steering shaft.

Abstract: The device comprises a stator (14) and a rotor (9) rotated by a key (8). The latter comprises several bushings (10c) which clasp the magnets (10c) and attract or repel magnets (10b1, 10b2) having a complementary or identical polarity and which are disposed inside the bushings (10b) such that they move inside the housings (17) of the rotor (9). In order to maintain the angular position thereof and to facilitate translatory guidance, the bushings (20b) comprise a rotational locking element (22) which engages into a groove (23) of the corresponding housing (17). In order to increase the number of combinations, each bushing (10b) of the rotor (9) or key (8) houses two magnets (101, 10b2) having inverted polarity or a magnet provided with at least one bipolar extremity, which are adapted in such a way that they can occupy different angular positions about a longitudinal axis (BB?) of the bushing (10b, 10c).

Abstract: A high security lock assembly for a safe deposit box door. The lock assembly generally includes a customer lock mechanism capable of at least five million actuation configurations, and wherein the customer lock mechanism includes a selected one of the actuation configurations; and a bolt mechanism, operatively associated with the customer lock mechanism, adapted for selectably engaging a safe deposit box to which the door is pivotally associated for locking the door relative to the safe deposit box.

Abstract: A keylock that can be opened either by a key A or by a key B, having an indicator for indicating whether the keylock has been opened by said key B, and including a housing and a stopper that is movable relative to the housing between a locked position and unlocked position when the keylock is opened by said key B or by said key A, wherein the indicator includes an indicator member connected to the housing for movement between first and second positions and being capable of displaying a first surface that is viewable through a window of the housing when the indicator member is in the first position, and of displaying a second surface through the window when in the second position, with the first and second surfaces differing in appearance one from the other.

Abstract: A lock device for use with a key is disclosed. The lock device includes a locking spindle including a plurality of locking spindle bores and a passage extending axially along an axial length of the locking spindle, and a driver structure including a plurality of driver structure bores. An interface between the driver structure and the locking spindle forms a shear line. The lock device also includes a plurality of combination pins in the plurality of locking spindle bores, and a plurality of driver pins in the driver structure bores in the driver structure, the plurality of driver pins being respectively associated with the plurality of combination pins.

Abstract: Disclosed herein is a forming disk for fabricating a fin tube. The forming disk comprises a substantially circular plate having a shaft connection hole formed adjacent a center thereof for receiving a shaft of a form rolling machine. A plurality of projections having a first length are formed along a circumference of said plate at substantially regular angular intervals in such a way as to protrude in a radial direction, and a round curvature is formed in the formed fin at certain axial pitch periodically in a radial direction. Also disclosed is a high-performance and high-efficiency fin tube having formed fins. Each formed fin comprises a generally circular plate having a crest and a valley formed in both side faces at certain angular intervals along the circumference thereof so as to form a continuous curvature.

Abstract: The invention concerns a method for producing metal strip (1) in an installation (2), in which a metal strand, especially a thin slab, is brought to a desired temperature and/or is maintained at a desired temperature in a furnace (3, 3a, 3b) and is subjected to a rolling process in a rolling train (4) downstream of the furnace (3, 3a, 3b) in the direction of conveyance (R) of the metal strand (1). In accordance with the invention, to prevent the formation of scale deposits in the downstream region of the furnace, provision is made for the metal strand (1) to be subjected to at least one descaling operation during its residence time in the region (5) of the furnace (3, 3a, 3b). In addition, the invention concerns an installation for producing metal strip.

Abstract: A cold roll forming method for reducing a diameter of a metal pipe and a metal pipe product having a diameter reduced by such a method are disclosed, wherein the method includes: passing a raw metal pipe through a set of pre-forming rolls so that it can be pre-formed into an intermediate metal pipe having an elliptical, elongated circular or rectangular cross-sectional shape; and then passing the intermediate metal pipe through a set of diameter-reducing rolls disposed on a downstream side of the set of pre-forming rolls so that it can have its outer circumferential length reduced to be smaller than an outer peripheral length of the raw metal pipe, while at the same time being re-formed into a circular cross-sectional shape or any other cross-sectional shape different from the cross-sectional shape of the intermediate metal pipe.

Abstract: To provide the manufacturing method for the press work product reducing the chance of causing distortion of the countersink as press-forming the countersink. This is the manufacturing method for a press work product which has a tapped bore for a stem of a flat countersink head screw to penetrate therethrough and a countersink formed around a circumferential line of the tapped bore for a head of the flat countersink head screw to seat therein, comprising steps of forming a work as the press work product by punching a plate material, trimming an outside diameter of said work, and forming said countersink by inserting said work after trimming the outside diameter into a press die to press form thereof.