Abstract: A latch arrangement including a latch bolt having at least an open and closed position for releasably retaining a striker in use, the latch bolt being releasably held in at least a closed position by a pawl, the pawl being operably connected to an actuator by a transmission path, such that powered actuation of the actuator causes the pawl to release the latch bolt for opening, the latch arrangement further including means operable to return the actuator to a rest position, independent of movement of the pawl, wherein there is a lost motion connection in the transmission path to provide for the return of the actuator to the rest position independent of movement of the pawl, the lost motion connection being in the form of an abutment on a nut in lost motion connection with a further abutment of the transmission path.

Abstract: An improved safety latch is disclosed for assembly and use upon a cabinet frame or like facing member to secure a drawer or cabinet door panel in a completely closed position without need for an invasive screw attachment. The present safety latch includes a U-shaped base fitting formed having front and rear walls spaced apart to engage the edge of the cabinet frame within therebetween, the rear wall in a preferred embodiment of the latch having a movable pad mounted on the interior side of the wall to clamp the frame and hold the fitting in a stationary position. The front wall of the base fitting is provided with a pair of flexible prong members extended outwardly from the front wall and further formed having opposed wedge-shaped ends. The safety latch further includes an angled clip member adapted to releasably engage the base fitting having an open chamber section formed along the top of the clip member and a wall section depending perpendicularly therefrom.

Abstract: A unitary, stamped bumper beam and a method of fabrication. In a preferred embodiment, the stamped bumper beam has a generally trussed-shaped section. The method for fabricating a unitary, stamped bumper beam having a front shell, with an exterior and interior side, and a rear plate, for use on a vehicle having vehicle, said method generally comprises stamping a blank to form a front shell portion and rear plate portion; punching apertures in appropriate positions in the blank to accommodate vehicle rails or components of the bumper; folding the blank along a longitudinal interface line the separates the rear plate portion from the front shell portion so that at some part of the rear plate portion contacts at least some part of the interior side of the front shell portion; and welding parts of the rear plate portion and the front shell portion that are in contact.

Abstract: An energy absorbing unit for use as a vehicle bumper having an upper zone and a lower zone wherein the upper zone comprises an inner relatively high density foam material for protecting a structural part of the vehicle by absorbing energy in a direction generally longitudinal of the vehicle and an outer relatively low density foam material for providing protection against impact for a body by absorbing energy during impact. The lower zone comprises a foam material having a density intermediate that of the foam materials in the said inner and outer areas of the upper zone.

Abstract: An energy absorption system and method comprised of a crush tube, a taper component, and a flare component. The crush tube is inserted into a matching hole in the taper component. As the taper and flare components are moved down over the crush tube, the taper component decreases the diameter of the crush tube and the flare component splits the crush tube in a plurality of petals. The crush tube may include a plurality of initiator slits to aid in the flaring process. When mounted with the longitudinal axis of the crush tube parallel to an axis of an impact, the present invention is capable of absorbing some or all of the crash event by dissipating energy by the tapering, flaring, friction, and other methods.

Abstract: A portable cushion protector which is easily attachable to and detachable from the rear portions of an automobile and which protects its rear bumper from scratches and other damage while it is parked. The cushion protector has supporting mechanisms which may be advantageously attached to the automobile trunk for holding the cushion securely in place upon the bumper.

Abstract: A bumper device can reduce a weight of a reinforcement member more than a weight of a conventional reinforcement member while sufficiently absorbing a given impact energy. A size “b” between both side mounting portions where the reinforcement member is mounted on a stay is set greater than a size “a” between both side longitudinal wall portions of a side frame, both outer longitudinal walls of the stay are inclined such that both outer longitudinal walls are opened toward the reinforcement member, and the distance between the inner longitudinal walls is set substantially equal to the distance between the both side longitudinal wall portions of the side frame.

Abstract: A device which has been designed and tested to improve the ease and cleanliness of transporting food portions from one place to another. The one-handed operation is simple and intuitive. Portions of food may be sliced from an original whole with the slicing edge and the cutting teeth on the spatula. Food portions may also be freed from being stuck to a serving plate or pan when the wedge shaped risers on the bottom of the spatula portion are slid underneath the food portion. A clamp bar operated by a thumb or a forefinger applies clamping pressure to the food portion while it is being transported, preventing the food from falling off of the spatula and eliminating the need for another device or the use of a finger of the server's other hand to insure that the food portion remains on the spatula while being moved. Especially useful for difficult to serve foods such as pizza, where cheese strings remain attached to the piece being removed and pull it from the spatula.

Abstract: A vehicle pick-up bed is disclosed that can be folded into shape by hand. The pick-up bed includes a generally flat sheet of colored material molded together with a generally flat sheet of reinforced polymeric material. Preferably, the sheet of colored material is placed in the mold and the reinforced polymeric material is injected into the mold, onto the back of the colored sheet. During the molding process, the reinforced polymeric material and the colored material are formed or molded into a single, generally flat, solid component. The sheet of colored material adheres to the reinforced polymeric material. Once molded, the sides of the pick-up bed are folded into shape along hinge edges and connected to stay in place. Hinge edges could be formed by locating few or no reinforcing fibers in the reinforced polymeric material in the desired location of the hinge edges. The colored material is preferably a paintless polymer film. Alternatively, the colored material is pre-painted aluminum.

Abstract: A cargo area structure for a pickup truck has a bottom, interior side walls, and at least one interior end wall. The interior side walls and the end wall have a top edge and a bottom edge, with the bottom edge being attached to the bottom of the cargo area structure. At least one transverse divider has a first end and a second end and extends between the side walls with the first end adjacent to one of the side walls and the second end adjacent to the other side wall. Each of the side walls is generally planar and has a plurality of generally parallel vertically extending protrusions integrally formed on each of the side walls. The protrusions extend inwardly from the plane of the side wall and are spaced apart along the side wall so as to define mounting slots between the protrusions for mounting the divider between the side walls.

Abstract: A vision visor for a motorized vehicle is provided. The visor includes a visor plate that is at least partially translucent and a post assembly that is adjustably connected to an interior portion of the vehicle. A connector is fastened to the visor plate and adjustably connected to the post assembly, whereby the visor plate may be selectively placed between at least one eye of a driver of the vehicle and light emitted from a light source. A method for using a vision visor for a vehicle is also provided.

Abstract: The present invention relates to a truck cover. In particular, it relates to a cover for a truck having a material carrying container, such as a tipper truck. A first embodiment includes a cover assembly for the container of a vehicle; the container having first and second ends and the cover assembly comprising a retractable cover having a first end attached to a roller assembly and a second end attached to a cover support element, the cover assembly comprising rolling means adapted to roll the cover upon the roller assembly. The cover element is supported by at least one pivot arm at an upper end thereof, said pivot arm being pivotable about a lower end thereof at a point intermediate the two ends of the container and adjacent the bottom of the container, between a first position in which the cover support element is adjacent the first end of the container and a second position in which the cover support element is adjacent the second end of the container.

Abstract: A convertible roof system includes a front roof section, a rear roof section, an automatically power actuator and a linkage mechanism. In another aspect of the present invention, the front and/or rear roof sections are rigid, hard-top roofs. A further aspect of the present invention provides that the outside surfaces of the roofs have a generally vertical orientation when in their open and retracted positions.

Abstract: A convertible vehicle (1) with a roof (4) consisting of at least two parts, comprising a rear roof part (6) and a roof part (5) which is in the forward position when the roof is closed, where, when the roof is open, the rear roof part (6) is essentially vertical and the roof part (5) in the forward position with respect to the direction of travel (F) is essentially parallel to the rear part, is designed in such a way that a common drive (14), one of which is on each side of the vehicle, is used to move both the rear roof part (6) and the roof part (5) in front to open and close the roof (4).

Abstract: A pin-linked latch structure for an automobile tailgate is disclosed wherein the outside handle can be positioned up or down of latch assembly. Using a reverse-U aligned rod, the rod can be rendered upward as well as downward.

Abstract: A motor vehicle includes an end region and a receptacle arranged in the end region. The end region includes a pan made at least partially of a fiber reinforced plastic, and the pan functions as an impact deformable element.

Abstract: A framework of a vehicle superstructure, in particular for rail or road bound vehicles for passenger transport, having a side-wall structure containing an inner side facing the interior of the vehicle superstructure and an outer side facing outwards and longitudinal sections (1) and vertical sections (101) forming cross-like connecting places, whereby at one, several or all cross-like connecting places made between longitudinal sections (1) and vertical sections (101), the longitudinal section (1) is continuous and crosses behind the vertical section (101) on the inside at least in part and is releasably attached to the vertical section (101). For the purpose of releasable connection of the longitudinal section (1) to the vertical section (101), the longitudinal section (1) contains at least one undercut longitudinal groove (2) which runs in the longitudinal direction and crosses behind the vertical section (101).

Abstract: A cross car structure member including a beam comprising a hollow extended aluminum metal tube extending across the vehicle between the vehicle pillars, preferably, with the interior of the tube being used as a heating, ventilating and air conditioning duct.

Abstract: A floor is partitioned into a plurality of areas S1 to S4 by a floor tunnel portion 11, side frames 13, side sills 12, and cross members 7, 8, 15, and 16, and the rigidity of the floor panels of the areas S1 to S3 is adjusted by rigidity adjustment portions 20, 21, 22, 23, and 25. These floor panels are set such that their natural frequency in a 2×1 mode, in which two antinodes are generated in the length direction of the automobile and one antinode is generated in the width direction of the automobile, is 240 to 260 Hz. Thus, a reduction in road noise due to automobile tire cavity resonance is achieved.

Abstract: A compact seat cushion built to be easily carried by a shoulder strap or built-in handle which has a padded top for sitting on and a bottom that is rugged and waterproof. The seat cushion unzips to separate the top and bottom into two separate parts. The leg-warmer/protector envelope attached to the bottom, unfolds from inside. The padded top is attached to the top of the leg-warmer/protector envelope. The leg-warmer/protector envelope has a side zipper to allow ease of ingress and egress and includes an extension zipper to lengthen the tube as desired. A built-in belt at the open end top of the leg-warmer/protector envelope allows a user to cinch it around his waist. The padded top which is fastened to the top of the open end of the envelope inserts into the envelope and is suspended at a level that allows it to be easily placed below the user's seat inside the leg-warmer/protector envelope.

Abstract: A chair with four sets of leg tubes(22) consisting of two leg tubes(22) attached at their centers in an X position which fold into a collapsed position with leg tubes(22) nearly parallel to each other. Seat tubes(24), and back tubes(44) are pivotally attached to the upper ends of leg tubes(22) at the rear of the chair. Seat tubes(24) are connected to leg tubes(22) at the front of the chair by seat clips(30). This configuration of the chair in the open position, provides a stable structure for the attachment of a seat cover(42) and for the attachment of a mechanism for reclining back tubes(24) and back cover(11). Arm braces(18) extending from the top of leg tubes(22) at the rear of the chair, and connected to vertical tubes(14) extending from near the center of seat tubes(24) support arm tubes(8), which are attached to back tubes(44). Back tubes (44) recline by moving arm tubes(8) to different positions in slots in arm plates(12) attached near the front of arm tubes(8).

Abstract: A folding chair has a seat plate, a seat frame, a pair of front legs, a pair of rear legs, a backrest, a pair of joints, a pair of fastener devices, a pair of front pedestal casings, and a pair of rear pedestal casings. The seat frame is connected to the front legs and the rear legs. The seat frame has a middle support plate having a pair of oblong holes. The seat plate is disposed on the seat frame. Each front leg has a lower end to receive the corresponding front pedestal casing and an upper end inserted in the backrest. Each joint is disposed on the corresponding front leg. Each rear leg has a through aperture, a first end to receive the corresponding rear pedestal casing, and a second end inserted in the corresponding joint. Each fastener device has a base plate, a click block disposed on the base plate, and the click block inserted through the corresponding oblong hole of the seat frame and inserted in a T-shaped bottom recess of the seat plate.

Abstract: The present invention relates to devices for the protection of vehicle interiors, including seats and foot wells, from being soiled by objects, liquids, foods, and the like discarded by children restrained in safety seats. The devices include single-piece and multiple-piece mats for placement between the vehicle seat and the safety seat, that include flanges for containment of the discarded objects, liquids, foods and the like.

Abstract: In this piece of furniture, which is taller than a normal chair, the seat as such is located at a such height as to allow the user to rest the user's feet on the floor or on a footrest and is constituted by a body that is differentiated at the top by a rear seat portion for the user's buttocks and a higher front portion that, inserted between the user's thighs, allows the user to sit astride it, this front portion being differentiated, lengthwise down the centre, into two parallel portions that, being mirror images, are spaced apart to define therebetween an open space located in correspondence with the user's genital area.

Abstract: The present invention relates to an anti-submarine device installed to the seat frame of an automobile for preventing a submarine phenomenon, and more particularly, an anti-submarine device capable of providing a passengers with comfort when sitting and rigidly holding the buttocks of a passenger at the front end of a seat cushion by a protruding means which protrudes the front end of the seat during a head-on collision or sudden stop.

Abstract: A seating structure includes a backrest having a top and bottom and includes a frame. The frame includes a pair of spaced apart side members defining an opening therebetween. Each of the side members has a length. A flexible membrane extends between and is attached to the side members across the opening. An armrest is moveably mounted to each of the side members. Each of the armrests is adjustably moveable along at least a portion of the length of the side members between at least a first position and a second position. The first position is closer to the bottom of the backrest than the second position. A method of adjusting the seating structure is also provided.

Abstract: A seating structure having a fabric with a weave pattern for supporting the body of a user. The fabric includes a plurality of strands of multifilament yarn and a plurality of monofilaments running generally perpendicular to the strands. At least some of the monofilaments are arranged in pairs. The monofilaments in each pair weaving alternatively above and below some adjacent strands and crossing over each other between other adjacent strands.

Abstract: A seating structure includes a support assembly for supporting the body of a user. The support assembly includes a frame member defining an opening and having a channel formed around at least a portion of a perimeter of the opening and an expandable carrier member expandable between at least a first and second configuration. The carrier member is inserted into the channel when expanded to the second configuration. A membrane of elastic material covers the central opening. The membrane has an edge, at least a portion of which is attached to the carrier member. The membrane is stretched a desired amount as the carrier member is expanded between the first and second configurations. A method of assembling a seating structure is also provided.

Abstract: The present invention relates to adjustment mechanisms suited for vehicle seats, and particularly mechanisms that include a memory feature. The inventive adjustment system is of the type that provides a means of selecting a preferred seat position, releasing the adjustment mechanism for free movement of the seat, and automatically arresting the adjustment mechanism, securing the seat at the selected position. In the case of some prior art seat adjustment mechanisms, using the recline adjustment control to dump the seat does not allow the passenger to automatically return the seat back to the selected position. Other prior art seat adjustment mechanism separate the recline adjustment and the dump controls but rely upon relatively bulky stamped metal components to capture and latch the seat after dumping.

Abstract: A supporting device for a chair in accordance with the present invention comprises a board comprising two opposite lateral wings extending from a side of the board and defining a compartment therebetween, each of the opposite lateral wings having a top edge. Plural resilient members extend between the top edges of the opposite lateral wings. An elastic lining pad is mounted to an outer side of the plural resilient members. When an external force is exerted on the supporting device, the plural resilient members absorbs the external force by means of deforming into the compartment, and the resilient members return to their original shapes when the external force is removed.

Abstract: A connector for securing two portions of a frame is disclosed. The connector is well suited for providing a low cost and reliable connection between first and second portions of a body support structure. In the preferred embodiment, the connector is used to secure the ground-engaging leg portions of a child's bouncer seat.

Abstract: The present invention provides a seat belt apparatus having a webbing which traverses an occupant's body. The webbing includes two lap belts which are secured at their ends to a lap belt retractor. The lap retractor is secured below the seat and in a forward position relative to the seat. The lap belt retractor is configured to simultaneously retract the lap belts to thereby retain the position of the buckle assembly over the mid abdomen section of an occupant. The opposing ends of the lap belts are secured in a fixed manner to a lap belt anchor. The lap belt anchor is secured below the seat and in a rearward position relative to the seat. The lap belt anchor may further incorporate a pretensioner which pulls the lap belts rearward and downward. The lap belts slidably engage a buckle assembly along a mid section of the lap belts. The webbing further includes shoulder belts which are secured at their ends to shoulder belt retractors.

Abstract: An omni-directional wheel for an omni-directional vehicle that exhibits constant ride height, low vibration, and reduced maximum ground contact pressure is disclosed. The invention consists of a wheel assembly rotatably connected to the omni-directional vehicle chassis. The wheel assembly comprises a hub on which free spinning rollers are rotatably mounted at an angle to the wheel axis. Constant ride height and low vibration operation are accomplished by configuring the rollers with an exterior profile, thickness, material properties and surface grooving to achieve constant deflection of the roller contact surface at all wheel rotation angles.

Abstract: The contact area between the wheel cover and an engaged part of a disc wheel is increased by providing a projecting part (21) on an outer surface (18a1) of a bulge part (18a), which is an engaging surface of a mounting claw (18) to be engaged with the annular engaged part of the disc wheel and used for mounting a wheel cover. Further, the friction therebetween is increased. Thus, an operation of hindering rotation of the wheel cover is achieved without forming a rib on the wheel cover and without forming a stopper on the disc wheel.

Abstract: The present invention is predicated upon the use of an apparatus that is engageable with a hand brake assembly which will automatically apply at least one brake means secured to a railway vehicle with such hand brake assembly. The apparatus of the invention comprises an operating means having at least a portion thereof engageable with at least one gear of a gear assembly disposed in a housing member of the hand brake assembly for operating such gear assembly. A source of fluid pressure is connected to operating means for periodically supplying a predetermined pressure to such operating means. A control means is connected to the source of the fluid pressure for initiating the supply of such predetermined pressure to the operating means. A further control means is connected to the source of the fluid pressure for regulating the supply of such predetermined pressure to the operating means thereby causing an automatic application of such brake means by the hand brake assembly.

Abstract: With the objective of providing an elastic crawler shoe capable of securing desired ground contact pressure on an icy road or a pressed snow road, thereby preventing a skid, a ground contact face of an elastic body which is bonded to a core bar so as to cover the core bar has grooves, and a central ground contact face in a longitudinal direction of the elastic crawler shoe is provided with stepped parts relative to end portions thereof so as to be protrusively stepped.

Abstract: A connection system for communicating multiple signals between a steering wheel and a steering column of a vehicle over a single wire is provided that uses time division to multiplex multiple signals. A plurality of signals are multiplexed together ranging from two to as many signals as desired. Input switches are grouped together to form a ladder multiplexer, such as a resistive multiplexer, that includes voltage and current muxing. A plurality of ladder multiplexers are joined together in a time division multiplexing scheme that operates continuously. An analog line may be added as a single channel. A marker pulse is used to signal the start of each time window to be divided for all the channels. Time division multiplexing is provided by a number of switching means.

Abstract: A system, capacitor having auxiliary cells, and associated methods for starting an engine is provided. The capacitor is an enhanced-power capacitor that provides enhanced cranking power. The capacitor is isolated from the battery and the rest of the engine's electrical system at preselected times. The capacitor is electrically connected to the alternator when the engine is running and is charged by the alternator. When the engine is not running, the capacitor is electrically isolated to prevent the capacitor discharging by powering accessory devices; the battery can power devices while the capacitor remains electrically isolated. During starting, the capacitor provides all the power supplied to the starter solenoid. If the battery is too weak to energize the electrical system during starting, an override allows the capacitor to provide power for all starting functions.

Abstract: A modularly attachable transfer switch assembly for operative connection to two alternate power sources and a power load is disclosed. The transfer switch can be quickly and easily installed upon existing electrical meters and therefore does not require modifications to existing electrical wiring systems. The transfer switch includes one power switch for selectively connecting a electrical utility power supply to the power load of a structure, such as a building for example, and a second power switch for selectively connecting an emergency power supply to the power load of the building. The transfer switch includes a mechanical interlock operatively connected to both the power switches for physically preventing both the power switches from assuming simultaneous ON positions, and a controller for controlling the emergency power supply and the transfer switches.

Abstract: A switch control circuit of an auto laser power control circuit is disclosed. The auto laser power control circuit has a feedback circuit and a switch control circuit. The switch control circuit has a first electronic switch, a second electronic switch, a third electronic switch, a fourth electronic switch, and a resistor. When a first control signal is enabled, the first electronic switch and the third electronic switch conduct and the second electronic switch and the fourth electronic switch are turned off. The signal of the feedback amplifying circuit is received by the driving circuit for driving a laser diode. When the first control signal is disabled, the second electronic switch and the fourth electronic switch conduct while the first and the third electronic switches are turned off. Via the voltage formed across the resistor in the driving circuit, the driving circuit is disabled, and the laser diode is completely turned off.

Abstract: A high accuracy stage supported in six degrees of freedom by electromagnetic bearings. Movements in the horizontal plane of the stage are controlled by variable reluctance actuators which are mounted between the high accuracy stage and a coarse stage so as not to distort the high accuracy stage during movements thereof. The high accuracy stage is supported in three vertical degrees of freedom by electromagnetic actuators disposed between the coarse stage and the high accuracy stage and aided by a supplemental vertical support disposed adjacent to the actuators. Preferably, the high accuracy stage is suspended from a bar supported by the supplemental vertical support, which is preferably air bellows.

Abstract: A machine tool has an operating unit that can be moved by at least one linear motor (24) along a first guide structure in the direction of a first axis of travel (z-axis) and by at least one second linear motor (21, 22) jointly with the first guide structure along a second guide structure in the direction of a second axis of travel (y-axis). Each linear motor (21, 22, 24) includes primary elements as well as secondary elements (15/1, 17; 15/2, 17; 23).

Abstract: An electromagnetic linear generator and regenerative electromagnetic shock absorber is disclosed which converts variable frequency, repetitive intermittent linear displacement motion to useful electrical power. The innovative device provides for superposition of radial components of the magnetic flux density from a plurality of adjacent magnets to produce a maximum average radial magnetic flux density within a coil winding array. Due to the vector superposition of the magnetic fields and magnetic flux from a plurality of magnets, a nearly four-fold increase in magnetic flux density is achieved over conventional electromagnetic generator designs with a potential sixteen-fold increase in power generating capacity.

Abstract: The Static Generator is a pair of centerless, concentric counter-rotating donut forms which produce an electric current.

Abstract: A vacuum cleaner assembly includes a motor having a rotor and a stator for providing motive power to the assembly. The rotor and stator each include armatures having tips. In one aspect, the widths of the rotor and stator tips are different. In another aspect, the rotor armatures have a non-constant width. Another aspect discloses the motor being a two-phase brushless motor having an even number (N) of stator armatures and N+2 rotor armatures. In another aspect, a rotor armature includes an aperture. In another aspect, each rotor armature includes a plurality of layers laminated together, with one layer being dimensionally different than the other layers. In another embodiment of the present invention, a control circuit energizes the windings of the stator so as to toggle the rotor in a first direction before alternately energizing the windings to drive the rotor in a second direction.

Abstract: In one aspect of the present invention discloses a dual-stiffness damping system for an evacuated energy storage system, the damping system comprising one or more flexible dampers and a plurality of more rigid bumpers, and a method of damping an evacuated energy storage system using dual-stiffness damping. Indeed, under normal operating conditions, a flexible damper, having a stiffness of about 500 lb/in to about 4000 lb/in, minimizes the rigid body critical speed of the rotor assembly of the energy storage system, allowing relative displacement between the stator assembly and rotor assembly but preventing the assemblies from physically contacting each other. Under more extreme external loading conditions, e.g., during an earthquake, the plurality of more rigid bumpers, having a stiffness of about 50,000 to 250,000 lb/in, engages the outer race of the bearing assembly to arrest further relative displacement substantially.

Abstract: A synchronous machine is disclosed that includes a rotor coupled to a rotor cooling system; a stator around the rotor and separated from the rotor by an annular gap between the rotor and an inner surface of the stator, and a stator ventilation system separate and independent of the rotor cooling system.

Abstract: A cooling assembly includes an electric motor 10 for driving a fan 16. At least one spoke structure 18 is coupled to and extends generally radially from a periphery of the motor body so as to be exposed to airflow caused by rotation of the fan 16. An electronic component 24 of the motor is operatively associated with the spoke structure 18 such that heat of the electronic component is conducted to the spoke structure and to a spoke extension 22.

Abstract: A vehicular starting and charging rotary electric machine includes a rotor, a stator, brackets, a brush, and a rotation detection sensor. The rotor has a field winding. The stator has a stator winding. The brackets supports the rotor and the stator. One end of the brush is brought into contact with the rotor to supply field current to the field winding of the rotor. The rotation detecting sensor is arranged coaxially with a rotating shaft of the rotor, for detecting a state of the rotor and functioning as a motor or a generator. The magnetic pole position detecting sensor is integrally fixed to the bracket.

Abstract: A brushless motor driving circuit is disclosed which includes an initializing element setting an initial rotating speed, an oscillating element for generating a frequency corresponding to the initial rotating speed set by the initializing element, a frequency controlling element for causing the frequency generated by the oscillating element to change from the frequency corresponding to the initial rotating speed to a frequency corresponding to a constant rotating speed, a driving signal generating element for generating driving signals having a plurality of phases based on the generated frequency of the oscillating element, and a driving element for driving coils having a plurality of phases based on the driving signals having the plurality of phases generated by the driving signal generating element.