Abstract: An acoustic logging tool including an elongated body, one or more acoustic transmitters, one or more acoustic receivers, and a broadband acoustic absorption region. A substantial portion of the broadband acoustic absorption region is between the transmitter and the receiver. The acoustic energy absorber includes a first absorber for absorbing a first mode of acoustic energy and a second absorber for absorbing a second mode of acoustic energy. The acoustic absorption material used to make the acoustic absorbers has an acoustic impedance between 20% and 120% of the material used to construct the acoustic logging tool. The acoustic logging tool includes an elongated hollow tool body, an insert configured to be inserted into the tool body, and a ring configured to be inserted onto the insert. A first element is supported by the ring and exposed to a pressure field, and a second element is supported by the ring and exposed to a pressure field.

Abstract: An air brush apparatus that is made up of a head assembly, a shell assembly, an air valve assembly for controlling the compressed air which is fed into the apparatus, a handle assembly, a lever assembly, and a paint regulating needle, with a distal end and a proximal end, being movably inserted into the handle assembly and through the air valve assembly and into the head assembly. The paint regulating needle can be cleaned by simply twisting the handle assembly. The apparatus also is designed with a more comfortable and ergonomic lever handle assembly.

Abstract: An injector for a common rail fuel injection system in which the opening of the nozzle needle is done under pressure control, while the nozzle needle is compulsorily closed when the control valve closes. This has advantages with regard to the onset of injection and the closing of the nozzle needle.

Abstract: A hydraulic actuator is provided for controlling relative movement between first and second structures between which the actuator is mounted, for example between a boom and the base frame of an agricultural sprayer, while providing some resilience in the form of suspension. The actuator comprises a piston cylinder having a floating cushion piston supported within the cylinder end to support the piston within the cylinder in a retracted position at a prescribed spacing from the cylinder end. The piston can thus be deflected from the retracted position in either direction using a pressure relief mechanism so as to provide some flexibility to the actuator to accommodate the varying forces between the pair of relatively movable structures between which the actuator is mounted. The cushion piston requires no additional electrical switches or controllers and can be part of the hydraulic circuitry of the actuator so as to provide a simple, low cost actuator with integral suspension.

Abstract: A spraying apparatus is disclosed for spraying coating material onto an internal wall of a cylindrical structure having an opening. The apparatus includes a spraying assembly which has a first and a second end. A support is secured to the spraying assembly, the support being selectively movable relative to the opening of the structure for permitting movement of the second end of the spraying assembly axially relative to the structure. A first conduit has a first and a second extremity, the first extremity of the first conduit being connected to a source of a first component of the coating material. The second extremity of the first conduit is connected to the second end of the spraying assembly. A second conduit has a first and a second termination, the first termination of the second conduit being connected to a further source of a second component of the coating material. The second termination of the second conduit is connected to the second end of the spraying assembly.

Abstract: Interlocking tabs are provided on the backside of a spray gun air cap to mate with corresponding slots in the barrel of the gun. The tabs and slots are spaced at 90° (or other spacing if desired) to confine the air cap to vertical or horizontal orientations. The barrel and retaining ring are provided with a custom coarse thread which both allows quicker removal and replacement of the air cap as well as substantially eliminating the ability to cross-thread the air cap on the barrel.

Abstract: A firefighting nozzle capable of selectively producing only a solid stream, only a fog pattern or a combination of both. The passage for the fog liquid can be opened to a flushing position for flushing debris therefrom. A solid stream sleeve is removably attached to a nozzle body for allowing discharge of solid streams having different diameters. A valve ball having primary and secondary flow passages is movable to positions for supplying liquid therethrough to both solid stream and annular fog supply passages, or to only the annular fog supply passage while closing the solid stream passage.

Abstract: A system mixes a chemical or other substance with a flowing liquid, such as water, for dispensation on a lawn, garden or other tract. The system includes a pipe containing the flowing liquid. A first reservoir is connected to the pipe and receives a portion of the flowing liquid. The first reservoir contains the substance and permits the substance to mix with the flowing liquid. After mixing, the flowing liquid mixed with the substance flows from the first reservoir back into the pipe. The system can also include a second reservoir also connected to the pipe. The second reservoir can also or alternatively receive a portion of the flowing liquid. The second reservoir contains either the same or a different chemical or other substance and permits the substance to mix with the flowing liquid. The flowing liquid after mixing with the substance flows from the second reservoir into the pipe. The pipe passes the liquid with mixed substance to a desired location of the tract.

Abstract: The present invention relates to a chemical sprayer that includes a sprayer head assembly and a container. The container defines a cavity for storing a chemical to be sprayed. The sprayer head assembly includes a chemical passage, a carrier fluid passage, a vent passage, a valve chamber and a valve. The chemical passage is communication with the cavity. The carrier fluid passage is in communication with a carrier fluid source. Both the carrier fluid and chemical passages are in communication with the valve chamber. The valve is moveably positioned within the valve chamber and defines at least partially a first passage and a second passage. The first passage is configured so as to be in communication with the chemical passage when the valve is in an open position. The second passage is configured so as to be in communication with the carrier fluid passage when the valve is in the open position.

Abstract: A liquid sprayer is provided. This liquid sprayer comprises a bottle having an opening and a sprayer housing attached to the bottle. This sprayer housing includes an electric motor, a voltage source for powering the electric motor, a pump driven by the motor, a switch for completing an electrical circuit, a nozzle mechanism attached to the sprayer housing for spraying a liquid. The liquid sprayer also comprises a venting mechanism. This venting mechanism comprises a vent housing having an inner surface and an outer surface, and a translating piston disposed in the vent housing.

Abstract: An actuator cap for use in radially locating a pressurized can in a sprayer device having a cradle for receiving the can. The actuator cap has a recess that engages an engagement land of the cradle and an actuator arm that is so located as to be movable by an actuation pin located in the engagement land. By such movement, the can's valve can be activated and its contents released. A method is also disclosed for activating a pressurized, axially extending can having a forwardly presenting valve while the can is held in pre-determined radial orientation within a sprayer device.

Abstract: The problem of the invention is to so develop known dispensers, that it is possible to very precisely determine the actual discharged medium volume.

Abstract: A spray nozzle is disclosed which includes an elongated nozzle body having an axially extending interior chamber and at least two radially extending air inlet ports communicating with the interior chamber. An elongated fluid inlet fitting having an axial fluid inlet passage is axially disposed within the interior chamber of the nozzle body. A fluid distribution insert is axially disposed within the axial fluid inlet passage of the fluid inlet fitting. The fluid distribution insert has an axial impact chamber formed therein, and an axial fluid feeding orifice which communicates with the axial impact chamber. An air swirling insert is disposed within the nozzle body. The air swirling insert has an interior bore for receiving the fluid distribution insert, and a fluid mixing orifice communicating with the fluid feeding orifice of the fluid distribution insert. A fluid metering insert is axially disposed within the impact chamber of the fluid distribution insert.

Abstract: The control space of the fuel injection valve is delimited, on the one hand, by the piston of the injection-valve member, on the other hand by the slide-valve body and circumferentially by the sleeve. Both the double-acting piston and the slide-valve body are guided in a narrow sliding fit on the sleeve. The throttle passage runs through the slide-valve body and is flow-connected permanently to the control passage in the control body. The throttle inlet leads from the high-pressure space into the control passage. The latter, on the side facing away from the slide-valve body, can, via a pilot valve, be connected to a low-pressure space and be separated again from the latter. The connection of the control passage to the low-pressure space leads to a pressure drop in the control space, with the result being that the injection-valve member moves in the direction of the slide-valve body and releases the injection nozzles.

Abstract: A spray nozzle has a nozzle tip removably installed on a main body of the spray nozzle at a spray side thereof. The nozzle tip has a flow path communicating a spray port disposed on a front-end surface with an inlet port disposed at a rear-end surface along an axis of the nozzle tip. A throat portion is provided on the flow path of the nozzle tip in a range from the inlet port to the spray port. The sectional configuration of the flow path in a range from the inlet port to the throat portion is circular or elliptic, and a sectional area of the flow path decreases gradually from the inlet port to the throat portion.

Abstract: A pressure regulating valve for controlling an upstream fluid pressure in relation to a reference pressure by regulating the fluid quantity let through the valve, comprising a housing (1) having an upstream inlet (2) and a downstream outlet (3) for the fluid, a pressure-sensitive element (5) for sensing the pressure difference between the upstream pressure and the reference pressure, and a spring-loaded regulating piston (7) which, in cooperation with a seat (8), is arranged to regulate a flow passage (9) between the inlet (2) and the outlet (3), the piston (7) being operatively connected to the pressure-sensitive element (5), to change its position relative to the seat (8) in accordance with the position of the pressure-sensitive element (5). The regulating piston (7) is slidably arranged on the outside of a guide sleeve (10) having openings (11) for the flow of fluid from the flow passage (9) to the outlet (3).

Abstract: The present invention relates to a fuel injector, in particular a fuel injector protruding directly into a combustion chamber of an internal combustion engine, having an energizable actuator (10, 11, 12), a valve-closure member (7) able to be moved by the actuator (10, 11, 12), a secure valve seat (22), with which the valve-closure member (7) cooperates to open and close the valve, a fuel outlet formed in a downstream spray-discharge region and by at least one outlet opening (23) situated downstream from valve seat (22), and a dead volume (25) formed downstream from valve seat (22) and upstream from the spray-discharge region having at least one outlet opening (23). Surface 33 of valve-closure member (7) bordering the dead volume has a surface structure having at least several pores with a surface roughness of at least 25 &mgr;m for gas accumulation.

Abstract: In a fuel injection valve having a pressure control chamber, a nozzle, and an electromagnetic valve, a fuel flow-in passage, a fuel flow-out passage and at least a part of the pressure control chamber are formed in a single piece of a plate in such a manner that the part of the pressure control chamber is opened to an axial end surface of the plate and the fuel flow-out passage extends so as to penetrate the plate axially from an inner wall of the part of the pressure control chamber to another axial end surface of the plate and the fuel flow-in passage comprises a first passage extending from the axial end surface of the plate and a second passage extending from the inner wall of the part of the pressure control chamber, which intersect with each other within the plate, wherein an entrance orifice is formed in first passage.

Abstract: A fuel injector, in particular, an injector for fuel injection systems of internal combustion engines, having an actuator, which cooperates with a valve needle (34, 51, 73), has a first valve closure member (35, 52) that is arranged on the valve needle (34, 51, 73), the valve closure member cooperating with a first valve seat surface (33, 53) on a valve body (32, 50) forming a first sealing seat (36, 54). A second valve closure member (38, 55, 75) cooperates with a second valve seat surface (40, 56) in the valve seat body (32, 50) forming a second sealing seat (41, 57). The valve needle (34, 51, 73), or the first valve closure member (35, 52), has a limit stop, against which, after a partial stroke (h1) of the valve needle (34, 51, 73), a counter limit stop of the second valve closure member (38, 55, 75) strikes, lifting the second valve closure member (38, 55, 75) from the second sealing seat (41, 57) in response to a further stroke of the valve needle (34, 51, 73).

Abstract: An overcap for use with a spray canister includes a peripheral wall adapted to attach to the spray canister, a cantilevered lever arm hingedly attached to the peripheral wall, and a nozzle within the cantilevered lever arm. The nozzle includes a stem socket adapted to receive a valve stem of the spray canister and adapted to provide a fan-shaped spray.

Abstract: An angle-based method and device to protect a grinding mill used for grinding material therein by rotating the drum so that the material adheres to the drum inner surface and rises therewith over a cascading angle from a gravity-balanced condition prior to detach by gravity from the inner surface and tumble into a cascading flow. The method is used for protecting the grinding mill from damages potentially resulting from the material agglomerating into a generally solidified lumped volume that could adhere to the inner surface and rotate with the latter more than the cascading angle to a fall angle wherein the lumped volume may detach from the drum inner surface and impact an impact position within the drum.

Abstract: This drive device comprises a rotary shaft (50), integral with a drive head (56), capable of being fitted closely into a base part (30) of the rotary tool (24).

Abstract: A bifunction condiment grinding tool has a first and a second turnable housings with an interposed member provided in between; the housings each defines a condiment receiving compartment. A shaft is passed through the center of the housings and the interposed member. Two grinding assemblies are connected to a respective one of the housings, and each has an inner grinding element and an outer grinding element; the outer grinding elements are secured to the housings, and the inner grinding elements are each connected to one end of the shaft. The shaft is further connected to two one-way members disposed in a respective one of the housings.

Abstract: A reel braking apparatus for a tape recorder selectively brakes a reel disk assembly, which includes a reel disk and a reel gear installed on a deck, according to an operational mode. The apparatus includes a clutch member supported by a rotation shaft installed on the deck, a gear member installed coaxially relative to the clutch member so as to rotate by being engaged with the reel gear, and a clutch spring installed between the gear member and the clutch member for restricting rotation of the gear member so that the gear member can rotate in one direction according to a rotational direction of the reel gear. The clutch member and the clutch spring are coupled to each other, and this allows the gear member installed for engagement with the reel gear of the reel disk assembly to rotate in one direction only.

Abstract: A belt retractor for a vehicle safety belt comprises a frame, a belt reel rotatably mounted in the frame, a belt reel axle with an external toothing, and a pawl. The belt retractor has a sliding clutch by means of which the pawl can be brought to engage in the external toothing, in order to rotate the belt reel.

Abstract: A seat belt retractor for a vehicle safety restraint has a spool rotatably mounted in a frame. A ratchet wheel is rotatably mounted to rotate with the spool. A control member is mounted in the frame. A locking pawl is pivotally mounted in the frame to pivot into engagement with the ratchet wheel. A sensor is responsive to the spool. Upon activation of the sensor, a cam surface and a cam follower couple the locking pawl to the control member. The cam surface has a discontinuity arranged so that the cam follower loses contact with the cam at high speeds but stays in contact with the cam surface at low speeds. Preferably, the discontinuity is a raised portion providing a first ramp in one direction in one portion on one side of the discontinuity of the cam surface and a second ramp in a different direction in a second portion of the cam surface on the other side of the discontinuity.

Abstract: The present invention generally includes a coil reel hold-down device having a base plate operatively arranged to be secured to a floor and a snubber arm pivotably mounted to the base plate, the snubber arm having a first section and a second section disposed at an obtuse angle with respect to one another, and a means for effecting a pivoting movement of the snubber arm relative to the base plate.

Abstract: The present invention relates to apparatus and methods for winding filament to create a structure. In one embodiment, the invention includes the application of filament to a rotating mandrel to create a desired shape. The invention includes the filament winding of both simple and complex shapes.

Abstract: A textile tube on which yarn is wound to form a pack comprises a body having a tubular body extending between opposed ends and an outer surface. At least one recessed score is defined proximate at least one end of the tube body. The recessed score has a substantially rectangular shape wherein the width of the recessed score is at least about five time the depth of the recessed score. As such, the recessed score provides more surface area for capturing yarn during a winding procedure. The recessed score also retains a substantially constant shape regardless of the moisture content of the tube, which is particularly advantageous when the tube body is formed of paperboard or other hydroscopic material.

Abstract: A winding machine, essentially constituted by individual winding stations disposed in stages which are controlled, at the level of each stage, by an assembly of drive shafts of packages and drive shafts of fliers, the yarns being supplied by a pre-feed device for its yarns. The winding machine is transformable on site and has a device for operating the drive elements of the drive shafts of the packages, the drive shafts of the fliers, and of the pre-feed device, the yarns being possibly mounted as desired in an interchangeable manner at the two ends of the winding machine, by symmetrical end plates or flanges, with arrangement in the front, of the conveyor which passes through them.

Abstract: A track and flap assembly includes a brake section and terminates with a curved section and a support member, for guiding a cutting tape transversely across a moving web of paper, and employs a plurality of movable sections enabling relocation of the brake section, and the curved section and its support member without changing their configuration to accommodate different trim widths of the web. The assembly includes a track that has an open channel containing the cutting tape and at least one flap for frictionally engaging the cutting tape when the tape exits laterally from the channel to assist in controlling the tension thereon and its movement. A pair of flaps may extend over a portion of the channel less than the entire width of the channel, and a third flap may overlie and at least cover the space between the pair of flaps forming a complete seal therein. A single flap may form with the channel the top of the guideway for the tape.

Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.

Abstract: There is provided a magnetic recording medium winding apparatus for rolling up an original roll of the magnetic recording medium, comprising: an arm member rotatably supporting a pushing roller at one end side thereof and supported turnably around the other end side thereof; a driving unit turning the arm member to push the pushing roller against the original roll of magnetic recording medium at a predetermined set pressure while rolling up the original roll; a strain sensing unit sensing a strain generated in the arm member during a pushing by the driving unit; and a control unit calculating a pressure of the pushing roller against the original roll of magnetic recording medium based on a sensed signal of the strain sensing unit and also feedback-controlling the driving unit such that the calculated pressure coincides with the set pressure at the driving unit.

Abstract: A device to hold a spare spool of trimmer line on a string trimmer while the trimmer is in use. The device has a clamp on its frame's lower surface (22) to attach it to the string trimmer's shaft, and elements (44A, 44B) on its frame's upper surface (20) to retain the spare spool of trimmer line. These elements use the spool's notched indexing lugs (34A, 34B) and spring (42) to retain the spare spool. The spare spool is placed into the device by compressing the spool's spring (42) and engaging the spool's notched indexing lugs (34A, 34B) onto pins (28A, 28B) located on curved slotted elements (24A, 25B) located on the upper surface of the device's frame (20).

Abstract: Device for gripping a package, in particular for yarn winding machines, is constituted by two lateral arms each provided at its free end with a spindle for mounting a tube of a package, movably mounted by their other end on a slide way for support and mounting on a winding machine and actuated to open and close by a jack, the mounting of each lateral arm on the slide way for support and mounting on the winding machine being carried out by an axle secured to the slide way and coacting with an oblong hole in the lateral arm. The slide way is moreover provided with abutments for guiding and limiting the path, which coact with the corresponding end of the lateral arms during opening and closing of the lateral arms.

Abstract: A standardized control panel for aircraft provides manually operable controls that are configured to activate an aircraft function if the requested aircraft function is installed on the aircraft or, are otherwise configured to activate a visual indicator if the requested aircraft function is absent from the aircraft.

Abstract: The present invention is directed towards a mobile ballistic missile detection and defense system. The system of the present invention comprises a ship based antiballistic missile (“ABM”), a missile launch detection system, a missile tracking system, and a ship based signal processing system capable of receiving said tracking signal, calculating an intercept trajectory for an antiballistic missile to intercept a missile, and further capable of outputting an intercept trajectory program to an antiballistic missile. The ABM system of the present invention is capable of deployment in the vicinity of rogue nations which may pose a ballistic missile threat to the United States.

Abstract: An aerial vehicle including a toroidal fuselage having a longitudinal axis, and a duct extending along the longitudinal axis between a leading edge and a trailing edge of the fuselage, first and second counter-rotating, variable pitch rotor assemblies coaxially mounted within the duct of the fuselage, and at least one canard wing secured to the toroidal fuselage and having a leading edge positioned out of the duct of the fuselage and axially forward of the leading edge of the fuselage, wherein at least a portion of the canard wing comprises a control surface having a variable angle of attack. The invention provides an aerial vehicle that can take-off and land vertically, hover for extended periods of time over a fixed spatial point, and operate in confined areas. The aerial vehicle also has the ability to transition between a hover and high speed forward flight.

Abstract: A balloon comprising an envelope, wherein the envelope has a multilayered structure comprising a gas-impervious sheet, and a liquid absorbent sheet overlaid on the inner surface of the gas-impervious sheet.

Abstract: Propeller-driven aircraft (30) comprising an engine (31) providing mechanical engine power for rotating a propeller (32), an engine limiting unit (35), an engine control unit (37) for controlling the mechanical engine power of the engine (31), a system (36) for measuring the airspeed and providing information concerning the airspeed to the engine limiting unit (35), wherein the engine limiting unit (35) automatically reduces the mechanical engine power at airspeeds below a certain first airspeed value (V1).

Abstract: An improved airplane cockpit entry to secure the cockpit area. By use of an interlock method using two doors that are controlled, lockable and unlockable, containing a small recognition area between the two doors. Control can be established to only allow authorized personnel to enter or exit securely and eliminate forcible, rushed entry, yet allowing ease of exiting the cockpit area for emergency conditions.

Abstract: An aircraft integrated non-lethal weapon system AINLWS for commercial aircraft with a sealed bulkhead between the cockpit and the cabin. The cockpit has an air-conditioning system CAS separate from the cabin air-conditioning system PAS, the non-lethal weapon NLW material is injected into the cabin by a NLW supply system, and the cabin is exhausted, after securement, by an NLW exhaust system and the cabin returned to the cabin air system.

Abstract: This invention relates generally to the field of aircraft technology and systems utilized for protection of aircraft, occupants, and operators thereof from hijackers, terrorists, and other anomalous problems while in flight. More particularly, the present invention relates to a device used in conjunction with walls, floor, and ceiling of a cockpit's entry/exit passageway for protecting the cockpit crew from weapons, hostility, decompression, and/or physical intrusions. A light weight protective shield for the cockpit of an aircraft (i.e. bullet-proof door) along with a internal locking and release device, none of which is provided by prior art. The protective shield can absorb repeated blows, provide pressure relief in the event of aircraft decompression, resist penetration of firearms, knives, and explosive devices, and is compliant with FAA regulations.

Abstract: Aircraft, such as tri-body aircraft, and associated methods of manufacture. In one embodiment, a tri-body aircraft has a fuselage with a forward portion extending at least partially forward of an aft-mounted main wing and first and second aft portions extending at least partially aft of the main wing. The forward fuselage portion and the first and second aft fuselage portions can include passenger cabins that are connected, allowing passengers to travel between the cabins during flight. In another embodiment, the aircraft includes a propulsion system having a first engine nacelle positioned at least proximate to the first aft fuselage portion, a second engine nacelle positioned at least proximate to the second aft fuselage portion, and a third engine nacelle positioned atop an inverted V-tail extending upwardly from the first and second engine nacelles.

Abstract: A crashworthy aircraft seat for protecting a passenger during a crash of the aircraft includes a support structure coupled to the aircraft, a seat assembly slidingly associated with the support structure, guide means coupled to the support structure for guiding upright members of the seat assembly as the seat assembly slides relative to the support structure, and means for variably attenuating kinetic energy as the seat assembly and the passenger move downward relative to the support structure from an initial static start position to an end position during the crash.

Abstract: In a millimeter wave de-icing system for the front areas of exposed shell structures, at least one independently operable millimeter wave generator is disposed in each shell structure closely adjacent the surfaces of the shell structure to be de-iced or kept free of ice and uncoupling structures are flanged to the microwave generators and have uncoupling openings disposed along the areas of the shell structure to be heated so as to provide a millimeter wave front directed toward this area. The area subjected to the wavefront includes walls of a dielectric composite material with a metallic skin whereby the millimeter wave front penetrates the wall and at least partially is converted into heat within the wall of composite material thereby providing for rapid and effective heat supply to the wall areas of the shell structure to be kept free of ice.

Abstract: A spacecraft bus (30) that is assembled from piece parts (10) made by a resin transfer molding process. The resin transfer molding process includes forming graphite sheets in a mold prior to injecting a resin into the mold. Because the spacecraft bus (30) is an assembly of piece parts (10) made by a resin transfer molding process, the piece parts (10) can be made very large and complex.

Abstract: The invention presents a new concept of spacecraft vehicle design and method of utilization in space flight operations. The system examines the major elements of launch, to orbit flight and return format. The system relies heavily on current space flight technology. Two spacecraft vehicles are utilized in conjunction to achieve Earth orbit. The vehicles are launched simultaneously in a joined configuration. Reaching approximately half distance to orbit, the vehicles separate with the booster vehicle returning to land and the transport vehicle continuing to Earth orbit. Terminating orbit space flight, the transport vehicle reenters the atmosphere returning to land. The details of spacecraft construction and space flight operations are complex and will not be discussed.

Abstract: A track receiver is located on-board a locomotive for receiving a first magnetic field produced in response to a cab signal carrier transmitted through a rail on which the locomotive is carried. The track receiver is oriented so that a second magnetic field produced during operation of a traction motor of the locomotive propagates substantially perpendicular to an axis of sensitivity of the track receiver, and is oriented so that the first magnetic field propagates parallel to the axis of sensitivity of the track receiver.

Abstract: In a cable mounting structure, a casing body is formed with a through hole through which a cable is inserted. A first retainer is secured to a first part of the cable and fitted with the through hole. A second retainer is attached on the casing body while holding a second part of the cable. The first retainer is an elastic member having a groove fitted with an edge of the through hole. The second retainer includes a retaining member provided on the casing body while being formed with a guide groove, and a holding member detachably fitted into the guide groove.