Abstract: A vehicle seat, which prevents a passenger from sitting thereon in an uncomfortable seat state is provided. An interference bar is received in receiving hole formed in the headrest. The interference bar extends from the receiving hole when the headrest is rotated forward in the seat back. When the headrest is fully rotated to face the front side of the seat back, the interference bar extends in the forward direction of the vehicle seat. Thus, the interference bar protruded from the receiving hole interferes with the back of the passenger and thereby prevents the passenger from sitting on the seat in the uncomfortable seat state.

Abstract: A bench mining system and mining method, particularly useful for open pit bench mining, employs a combination of bulldozers and transversely movable apron feeders to provide the primary mechanism for removal of overburden. The apron feeders are preferably equipped with a self-cleaning arrangement to facilitate continuous operation without undue stoppages.

Abstract: A cutting tool holding apparatus (10), including in combination a cutting tool holder (14); a retainer (18) adapted to be positioned adjacent to the tool holder (14), the retainer including an aperture (18c), a base (16) including an aperture (16c) linked to the retainer aperture (18c), the base (16) adapted to support the holder (14) and the retainer (18), and a fastener (20) adapted to be inserted through the linked apertures, wherein securing the fastener in the linked apertures wedges the holder, retainer and base together and wherein at least two components of the tool holder, retainer and base contact via mating curved faces.

Abstract: Disclosed herein is a hub motor (100) formed in a wheel (14) for assisting in the movement of a vehicle (10) and methods associated therewith. The present hub motor (100) and methods provide simple, inexpensive and reliable transportation. The hub motor (100) consumes minimal amounts of fuel, yet provides ample power for moving people and/or objects.

Abstract: A wheel bearing device, includes a cylindrical bearing body having a wheel side hub part and a constant velocity joint outer ring part which are formed integrally with each other, a hub bearing having an externally fitted member fitted onto the bearing body and rolling elements, and a nut member fixing the bearing body to the hub bearing supported on a vehicle body side by tightening it to the screw part of the bearing body after the bearing body is press-fitted into the through-hole of the externally fitted member from the wheel side.

Abstract: A vehicle brake hydraulic pressure control unit includes a base body 1 incorporating therein a brake fluid flow path 1a and an electromagnetic valve 2 which is an assembled part assembled into a mounting hole portion 10A which is formed in the base body 1 in such a manner as to communicate with the flow path 1a. A hole wall of the mounting hole portion 10A has a plastically deformed portion 18 formed by pressing the hole wall in a downward direction of the mounting hole portion 10A. A locking groove 214 for the plastically deformed portion 18 to enter is formed on an outer circumferential surface of the electromagnetic valve 2. An outside diameter of the electromagnetic valve 2 at an upper side of the locking groove 214 is made smaller than an outside diameter of the electromagnetic valve 2 at a lower side of the locking groove 214.

Abstract: A control apparatus and braking control method for an electric vehicle is provided in which there is little response delay to a braking force command from a driver's seat even in a state where a regenerative load is small. A braking device that calculates an electric braking force command in accordance with the braking command and generates a mechanical braking command, and a control circuit that calculates an electric braking force on the basis of the electric braking force command from the braking device and the braking command and controls the power converter, are provided.

Abstract: A parking brake having an electromechanical and hydraulic device for gripping a pack of movable sectors connected mechanically to the wheels to exert the desired braking force on the wheels. The parking brake is characterized by having an oil flow regulating valve assembly, in turn having a first control solenoid valve and a second safety solenoid valve in series with each other.

Abstract: A separator drum for a separator having a vertical rotational axis. The separator drum includes an upper drum section, a lower drum section, and a screw connection formed between the upper end lower drum sections without a locking ring. The upper drum section is screwed into the lower drum section or the lower drum section is screwed into the upper drum section.

Abstract: A method for controlling and/or regulating an electronically triggerable vehicle brake system, operating on the return principle, and to such a brake system in which by an adapted triggering of the drive motor for the pressure generator, the pumping quantity of the pressure generator is varied such that the difference between these flows of pressure medium to and from the master cylinder assumes a minimal value, preferably a value of zero. To that end, the driving rpm of the pressure generator is preferably varied. The trigger signal for the drive motor can be ascertained by an electronic control unit from measurement outcomes from sensors within the vehicle brake system, or it can be estimated with the aid of a hydraulic volume model stored in memory in the control unit. The trigger signal can be controlled or regulated.

Abstract: In order to prevent a vehicle fitted with braking assistance and trajectory correction devices and having a highly placed center of gravity from overturning in a bend when there is a sudden turn of the steering wheel at the same time as a sudden braking action, a hydraulic braking circuit comprising a hydraulic pump (3) which sucks a fluid contained in a reservoir (3) through a master cylinder (1), is provided with a bladder (10). The bladder, placed between the master cylinder and the hydraulic pump, reduces the duration of flow of the hydraulic fluid to the pump, ensuring a sufficient suction pressure at the entrance of the pump in order to cram the brake and cause the wheel having the most pressure to skid.

Abstract: A device for actuating shoe brakes, particularly for rail or tram vehicles, comprising elements for actuating at least one brake shoe of a rail or tram vehicle, powered by battery voltage and powered by a bank of supercapacitors arranged in parallel to the actuation elements, the bank of supercapacitors being controlled and charged by a dedicated circuit, which is connected to the battery, insulation elements being provided in order to insulate the actuation elements from the battery when the actuation elements are powered by the discharge of the bank of supercapacitors.

Abstract: Measurement and/or control units located within a borehole are inductively coupled to a flat three phase power cable segment without piercing the armor around the cable. For drawing power from the cable, C-shaped, L-shaped or straight core(s) with winding(s) around at least a portion thereof are positioned proximate to one or both end conductors, outside the armor, with significantly overlapping the center conductor. For impressing or detecting signals on the cable, straight core(s) with winding(s) around at least a portion thereof are disposed on one or both sides of the cable, outside the armor, across all three conductors with the core oriented transverse to the cable conductors.

Abstract: A system and method for controlling cycling of high voltage contactors is provided. In one embodiment, the method includes generating a first contactor command and activating the contactor in response to the first contactor command. A timer is initiated upon generation of the first contactor command. The method also includes determining whether a second contactor command should be generated subsequent to the generation of the first contactor command. The method further includes activating the contactor in response to the second contactor command being generated when the timer has expired.

Abstract: A power supply control device for on-vehicle electric loads is proposed, the control device being capable of detecting breakages at a plurality of electrical loads, a positive side wiring thereof, a negative side wiring thereof, and a commutation circuit. Energization of electrical loads from driving power supply is controlled using switching elements. Anode terminals of commutation diodes connected in parallel with the electrical loads are connected to a load ground by an external common negative line or external individual negative lines. A breakage abnormality at the external common negative line or external individual negative lines is detected by negative line breakage abnormality detection circuit. Load currents at the electrical loads are detected by current detection resistors and current detecting differential amplifier circuits, and it is determined that there is an individual abnormality when a detected current is greatly different from a target current.

Abstract: A passenger detection apparatus includes sensors arranged on a seat in a vehicle; shield cables corresponding to the sensors, wherein one end the core wire is connected to the corresponding one of the sensors; a measurement signal output device for outputting a measurement AC signal; a device for detecting a current output from the measurement signal output device; a device for outputting a capacitance canceling AC signal, which has the same phase and the same level as those of the measurement AC signal; a device for selectively applying one of the measurement AC signal and a DC voltage to the other end of each shield cable; and a device for selectively applying one of the capacitance canceling AC signal and a second signal, which has a different waveform from that of the measurement AC signal, to the shield of each shield cable.

Abstract: A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup. One first DC/DC converter is connected to the disk drives respectively inside one subgroup, and the other first DC/DC converter is connected to the disk drives inside the other subgroup. A second DC/DC converter is made correspondent to all of the subgroups. Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.

Abstract: Embodiments of a power distribution system for distributing power to one or more electronic components, such as electronic components mounted within an electronic equipment rack, can include a dedicated controller mountable within a power distribution rack and at least one power distribution unit electrically coupleable to the controller and mountable at any of various locations within the rack. In certain embodiments, the controller can receive power from a power source and intelligently distribute the power to power distribution units coupled to the controller. The power distribution units can include outputs or receptacles to which power cords of electronic equipment stored in the rack can be coupled and through which power can be transmitted from the power distribution units to the electronic equipment.

Abstract: A Power Outlet Control Device with Serial Bus(es). It is a power socket that detects the working state of Electronic Device(s) through the Serial Bus and turns on or cuts off the power of the Electronic Device(s) according to the working state. The Power Control Socket Device with Serial Bus(es) comprises: a main power socket, connected to AC power; a sub socket; a Serial Bus, to output a data signal; a controller, connected to said Serial Bus and detecting said data signal to generate a control signal; a power switch, connected to said sub socket, said AC power and said control, with said control signal controlling the turning on or cutting off said AC power to said sub socket.

Abstract: A reliable power supply solution for a telecommunications site provides a combined primary and backup source of electrical power. One system of the power supply solution includes one or more microturbine generators operable to produce AC electrical power as well as one or more rectifiers operable convert the AC electrical power from the one or more microturbine generators to DC electrical power for supply to a DC bus. A transfer switch is electrically coupled between one or more microturbine generators and the one or more rectifiers, for selecting between the AC electrical power of the microturbine generators and incoming AC electrical power to be supplied to the rectifiers. Additionally, one or more proton exchange membranes are provided in the system for producing DC electrical power. The aforementioned power generation and supply components are coupled with the DC bus for supplying DC electrical power to telecommunications equipment coupled with the DC bus.

Abstract: An uninterruptible power supply device is proposed, which is designed for use in conjunction with an electronic system, such as a network server or a desktop computer, for providing an uninterruptible power supply to the electronic system. The proposed uninterruptible power supply device is characterized by the provision of a battery adaptation and management capability that allows the user to employ various types of battery units to serve as the backup power supplies. This feature allows the utilization of the uninterruptible power supply to be more flexible and convenient, and also can help solve the problem of shortened life of the battery unit due to the switching of multiple loads to the backup battery unit in the event of a failure in the main power supply.

Abstract: Required minimum power supply voltage for a load circuit is maintained. Power supply voltage generating circuit 10 comprises a power supply circuit 11 that steps down a voltage of an external power supply VCC based on a reference voltage VREF and supplies it to a power supply VINT of a load circuit 14, and a power supply circuit 12 that steps down a voltage of a step-up voltage power supply VPP based on a reference voltage VREF-?V, which is closer to the ground potential than the reference voltage VREF, and supplies it to the power supply VINT of the load circuit 14. The power supply circuit 12 supplies power to the power supply VINT of the load circuit 14 when the voltage of the power supply VINT is below the reference voltage VREF-?V. Further, a voltage step-up power supply circuit 13 generates a step-up power supply voltage VPP, which is a voltage higher than the voltage of the external power supply VCC, and supplies it to the power supply circuit 12.

Abstract: An enclosure assembly includes a first enclosure unit including a first door, a second enclosure unit, and a handle coupled to the second enclosure unit, the handle being operative so as to turn on or turn off power to the first enclosure unit, and wherein the first enclosure unit and the second enclosure unit are configured such that the first door cannot be opened if the handle has not been turned to a power-off position.

Abstract: Systems and methods for providing redundant voltage regulation are provided. A representative method incorporates: providing a first voltage regulator and a second voltage regulator, the second voltage regulator having output rectifiers; electrically connecting the first voltage regulator to a load such that the first voltage regulator independently powers the load; disabling the output rectifiers of the second voltage regulator; detecting a fault of the first voltage regulator; responsive to the fault, enabling the output rectifiers of the second voltage regulator such that the second voltage regulator independently powers the load.

Abstract: The size of a wireless chip is often determined according to an antenna circuit thereof. Power source voltage or power supplied to the wireless chip can be more easily received with a larger antenna. On the other hand, there has been an increasing demand for a compact wireless chip, and it is thus necessary to downsize an antenna. In view of this, the invention provides a wireless chip capable of data communication with a small antenna, namely a compact wireless chip having an improved communicable distance. A power source circuit of an ID chip of the invention generates a higher power source voltage than a power source voltage generated in a conventional ID chip, by using a boosting power source circuit having a boosting circuit and a rectifier circuit.

Abstract: An object of the present invention is to provide a semiconductor device which can obtain the high potential necessary for writing data to a memory, using a small circuit area. In the present invention, by using as input voltage of a booster circuit not the conventionally used output VDD of a regulator circuit 104, but rather an output VDD0 of a rectifier circuit portion 103, which is a higher potential than the VDD, the high potential necessary for writing data to a memory can be obtained with a small circuit area.

Abstract: A linear motor is provided that comprises a magnetic assembly, a movable element and a coil assembly that is operative to interact with the magnetic assembly to drive the movable element along a direction. The coil assembly further comprises a first coil section having a first motor force constant and a second coil section having a second motor force constant that is lower than that of the first coil section for driving the movable element along the said direction.

Abstract: An electrical machine, preferably a blower drive mechanism for a motor vehicle, having a shaft which is supported in at least two bearings with a specified axial play; a cylindrical bearing is secured in a bearing seat of an end shield and rests directly on the bearing seat. The cylindrical bearing has a cylindrical outer circumference, and the bearing seat is a sleeve with a cylindrical inside diameter, into which sleeve the cylindrical bearing is secured with a press fit on the outer circumference and is held axially in the bearing seat by the thus-attained frictional engagement. This has the advantage that more-precise adjustment of the longitudinal play of the armature is possible. Moreover, no additional components such as retaining springs are necessary.

Abstract: A motor cooling device has an impeller (2) pivotally supported by the rotary shaft (1a) of a motor (1), and a fan cover (4). The fan cover (4) covers the front region and outer peripheral region of the impeller (2) and has an air suction port (5) in the front and an air blow-out port (6) in the rear. The fan cover (4) is provided with a partition member (7) extending from a position more outside than the air suction port (5) to the impeller (2). A cavity (8) is defined between the outer periphery of the partition member (7) and the inner surface of the fan cover (4). The negative pressure due to the cavity effect of eddies produced in the cavity (8) causes the main air current passing through the impeller (2) to be drawn to the front ends of the vanes (3) of the impeller (2), so that aerodynamic characteristics and operation sound characteristics of the impeller (2) are improved.

Abstract: A gear assembly with a first gear having a first coupling portion and a vibration absorbing adaptor inserted into the first coupling portion of the first gear. The first coupling portion and the adaptor are interlocking The adaptor also includes a second coupling portion. A second gear is inserted into the second coupling portion of the adaptor and is driven by the first gear. Additional gears may be driven by the second gear.

Abstract: An assembly for connecting the stator windings of an electric motor to the respective power supply. The connection assembly comprises a first box-like connector provided with first internal passages which are open at their ends and are designed to accommodate corresponding first electrical terminals. The first connector is provided with a coupling to the stator which is adapted to arrange the first internal passages parallel to the axis of the electric motor. At the end part of the first internal passages there is a coupling cavity for at least one second box-like connector provided with second internal passages which are open at their ends and are designed to accommodate corresponding second electrical terminals for coupling to the first electrical terminals; the second internal passages are aligned with the first internal passages.

Abstract: An assembly for connecting the stator windings of an electric motor to the respective power supply, comprising a first box-like connector provided with first internal passages for accommodating respective first electrical terminals, which is substantially L-shaped. The first connector has an engagement for engaging the stator assembly which is adapted to arrange the first connector so that the first part is perpendicular to the axis of the electric motor. At the end of the first part of the first connector there is a coupling cavity for at least one second box-like connector provided with second internal passages for accommodating corresponding second electrical terminals for coupling to the first electrical terminals. Each first electrical terminal is constituted by a central flat body with a protruding flat pin for electrical contact with a respective second electrical terminal, and with a crimping portion that protrudes along a direction which is perpendicular to the arrangement of the flat pin.

Abstract: A step-by-step motor able to carry out up-and-down motion includes a housing, a bearing, a connecting member, a magnet, a rod unit, a right-handed coil, a reverse coil and a bayonet socket combined together. After the electric wires of the bayonet are electrically connected, the right-handed coil and the reverse coil respectively connected with the electric wires will be electrified to actuate the magnet and the connecting member to rotate clockwise or counter- clockwise. Simultaneously, the rod unit will be driven by the connecting member to move up or down linearly, able to carry out transmission effectively, small in size and taking less space.

Abstract: The invention relates to a method for producing the rotor winding of an electric machine comprising at least four exciter poles in the stator and a commutator rotor with a number of pole teeth which deviates from the number of exciter poles as well as a number of individual tooth coils and commutator segments that is at least twice as large as the number of pole teeth. In order to obtain low torque ripple and a long service life by optimally commutating the coils, a first coil is wound from an initial segment at a selectable offset angle to the initial segment on a first pole tooth, the winding wire is then fixed to another commutator segment at a predefined segment interstice length, whereupon a coil is successively wound from each segment onto the pole tooth having the lowest angular error relative the offset angle in relation to the pole separation of the stator, and the winding wire is then contacted on another segment at the same segment interstice length.

Abstract: For an electrical reluctance rotary machine, a stator has a winding as an armature, and a rotor has permanent magnet implanting slots provided in a rotor core at lateral sides magnetic poles configured to produce reluctance torque along directions of magnetic flux passing through the magnetic poles to produce reluctance torque, and permanent magnets inserted in the permanent magnet implanting slots so as to cancel magnetic flux of the armature intersecting that magnetic flux, to control a magnetic field leaking at ends of the magnetic poles, having circumferential magnetic concavo-convex. The electrical reluctance rotary machine is configured to meet a relationship, such that 1.6 ? P × W pm R ? 1.9 where Wpm [mm] is a width of permanent magnet, R [mm] is an outer-diametrical radius of the rotor, and P is the number of poles.

Abstract: The invention is directed to an arrangement for fastening permanent magnets to rapidly rotating rotors of electric machines. It is the object of the invention to find a novel possibility for fastening permanent magnets to the rotor of rapidly rotating electric machines which allows the magnets to be fixed so as to be secure against centrifugal forces for high rotating speeds and under confined spatial conditions without a frictionally engaging connection of magnet holders to the rotor.

Abstract: An electric generator 10 of the present invention comprises a permanent magnet 14, a coil 30, a yoke 20, and attracted means 19 composed of a plurality of attracted pieces 18 which are arranged radially around the rotation axis 12 and are magnetized by the permanent magnet 14. The permanent magnet 14, the coil 30, the yoke 20, and the attracted means 19 are mounted on the rotation axis 12 and the attracted pieces 18 that constitute the attracted means 19 are each placed in positions that correspond to positions that bisect the spaces between the metal pieces that constitute the yoke 20, so that the cogging torque exerted on the rotation axis 12 is reduced.

Abstract: A stator has four or more magnetic poles. A commutator has a plurality of segments arranged in the circumferential direction and a short-circuit conductor for short-circuiting predetermined segments from among these segments. Each segment has an angular width WS, and there is a gap of an angular width WU between the segments. A substantial angular width WB of each of an anode brush and a cathode brush satisfies (n?1)(WS+WU)+WU<WB<n(WS+WU)+WU, where n is an integer no less than two. A plurality of coils are each connected to the corresponding one of the segments in order to form n closed loops. The closed loops each pass through the corresponding segments and are electrically independent of each other.

Abstract: In a distribution winding stator using a coil for a rectangular conductor, a coil end is made smaller than before, and the reduction in the current density is aimed, so that a rotary electric machine of a small size and a high power output is obtained. A conductive wire of a rectangular shape in cross section is double-wound, and is allowed to be shifted by the whole width of the wire having double-wound the crowns of both ends, and is formed to crank shape so as to become a length within the range of the intervals of the adjacent slots, so that the conductive wire is formed by being inserted into the slot of the stator.

Abstract: A rotary electric machine and a commutator for the rotary electric machine are disclosed wherein the commutator includes an insulating member carrying thereon a plurality of commutator segments each having a brush contact surface. Each commutator segment has an embedded portion formed with a tab tail, molded to the insulating member, and has a riser portion radially extending outward from the brush contact surface to be electrically connected to armature coils. The insulating member has a large diameter portion and an increased wall thickness portion, axially extending from the large diameter portion in a direction away from the riser portion, with a sum of axial wall thicknesses of the increased wall thickness portion and the large diameter portion lying in a value two times an axial wall thickness of the riser portion. The increased wall thickness portion is formed in a tapered shape.

Abstract: A polyphase claw-pole armature for an electrical machine is made with several identical segments regularly distributed along the direction of motion and spaced by a magnetic air gap. The number of segments is equal or a multiple of the number of winding phases. Each segment includes a magnetic circuit with a plurality of claws arranged in a plurality of rows, with the base of each claw connected to a common yoke. One or a plurality of non-interlaced coils are included inside each segment, with the coils being wound around the bases of corresponding claws.

Abstract: An electric machine includes a rotor, a first tooth portion, and a second tooth portion spaced apart from the first tooth portion and cooperating with the first tooth portion to at least partially define a rotor opening. At least a portion of the rotor is disposed within the rotor opening. A bridge has a first end connected to the first tooth portion and a second end connected to the second tooth portion such that the bridge defines a portion of the rotor opening. An aperture is defined by the bridge and is disposed between the first end and the second end.

Abstract: This invention provides methods and apparatus for focusing a hypersonic beam to control both a direction and depth of audible information delivery. Signals that are delivered to each of a plurality of hypersonic transducer elements are adjusted in phase so that transmitted hypersonic signals are focused at a focal point anywhere in space. The focal point of a focused hypersonic beam may be used to scan a space of interest when used in a receive mode in a pinging process. When objects are detected, a focused hypersonic beam may be used to deliver audible information substantially only to a neighborhood of the detected object.

Abstract: A piezoelectric motor for generating an elliptic motion by adding a longitudinal vibration to a bending-direction vibration is provided. The piezoelectric motor includes a piezoelectric member which generates a first vibration mode and a second vibration mode simultaneously by an applied power and a frictional member of which a portion is insertedly attached into a concave portion indentedly formed on one side of the piezoelectric member, wherein the frictional member is in an elliptic motion by the vibration generated by the piezoelectric member, so that an influence of the attachment of the frictional member to a resonance frequency can be minimized. Accordingly, a driving efficiency of the piezoelectric motor can be improved. In addition, attachment strength of the frictional member can be improved.

Abstract: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g., an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.

Abstract: An system and apparatus for capturing electricity comprised of: a wheel and a fixed conducting rod, both in electrical contact with the wheel and at least one electrical component or system in which the wheel is rotatable about an axis. The wheel is comprised of: a rotatable hub; a rotatable conducting rod within the rotatable hub; at least one electricity generating device positioned on the hub and comprised of: a generally hollow housing having a distal end and a proximate end; a wire coil fixed within the housing and having an axial bore therethrough; a translatable magnet; and at least one wire in electrical contact with the wire coil and the rotatable hub; wherein as the wheel is rotated, the translatable magnet laterally translates back and forth within the housing and passing through the wire coil to generate the electric current.

Abstract: A television display cover for covering the screen of a plasma or LCD screen when the television is not in use. The cover can be converted from existing frames, framed art, or mirrors already contained in a users' home or wall or panel for attachment of the display cover. Support brackets are secured to a wall or recessed surface. The support brackets are secured to the display cover via some attachment means. The cover can then be pivoted to an open or closed position to either expose the television display or cover it up.

Abstract: A refrigerator and/or freezer is provided with a glass door having a metal frame in which a glazing is inserted, the metal frame forming an outer skin of the door, which with a front-side portion and a narrow-side portion covers the front and circumferential sides of the glazing and forms the visible sides of the door, a circumferential glazing holder being connected with the outer skin. The outer skin is composed of a circumferentially integral one-piece metal casing, which on the visible sides of the door is formed without a seam, and the glazing holder is foamed into a circumferential foam body with which the metal casing is circumferentially foam-backed on its rear side.

Abstract: A drawer for mounting telecommunications equipment to a rack is disclosed. The drawer includes a lower platform and an upper platform for supporting the telecommunications equipment. The upper platform is pivotably coupled to the lower platform. The drawer further includes a mounting structure for mounting the drawer to the rack, wherein the mounting structure includes telescoping portions that allow the drawer to be slid away from and toward the rack.

Abstract: A storage device box includes a casing unit, a releasing unit, and a cover. The casing unit has a front opening. The releasing unit extends movably into the casing unit through the front opening and is movable relative to the casing unit in the longitudinal direction. The cover is coupled pivotably to the releasing unit for covering and uncovering the front opening in the casing unit, and is co-movable with the releasing unit relative to the casing unit in the longitudinal direction.