Abstract: An electronic device includes an integrated circuit linked to a coil antenna forming at least a spiral having opposite ends connected to the integrated circuit, and a plate support for supporting the integrated circuit and the coil antenna. The plate support is conductive and open ring shaped, wherein the internal circumference of the ring is concentric to the spiral. The opening of the ring is obtained by a cut through the plate support. The coil antenna is fastened to and isolated from the plate support through an insulating material. The cut and the plate support are filled by the same insulating material.

Abstract: A wireless tag includes a circuit module having an electromagnetic induction unit for generating an electromotive force by an electromagnetic wave of the outside and an information storing unit for storing information and outputting the information by the electromotive force, a base part on which the circuit module is disposed and which is foldable, and a locking member provided in the base part which electrically cuts off the electromagnetic induction unit in case that the base part is folded and locks the base part in the folded state. Further, the wireless tag includes a belt for attaching the circuit module to an object. The base part is folded with the belt disposed between its both sides and thus the belt becomes a ring shape.

Abstract: In an IC card provided with a recording unit having a plurality of recording areas designated by continuous addresses, a unit for executing a command based on information recorded in the recording unit, and a unit for communicating with an external apparatus, when the information received from the external apparatus is recorded in the recording unit, the information is divided and recorded in the plurality of recording areas designated by discontinuous addresses.

Abstract: A system and method for providing a substantially constant volume exhaust or ventilation air terminal system is shown for controlling exhaust and/or return airflow rates in a system having a central fan or ventilator. The system and method permits zone-by-zone or area-by-area airflow regulation or control in non-demand areas in response to a demand or call for ventilation in demand areas. In one embodiment, the system employs at least one constant airflow controller or regulator situated in a damper. Another embodiment shows a combination of a first regulator constant airflow controller or regulator situated or mounted on a damper with a second constant airflow controller or regulator situated in a duct associated with the damper. In still another embodiment, a constant airflow controller or regulator is provided in a duct, and used in combination with a solid damper.

Abstract: A solution temperature control device in a biological cell observing chamber (30) used for the detection of chemotaxis and chemotactic cell separator, comprising a first temperature controller (62) and a second temperature controller (63). The first temperature controller (62) measures the temperature of a solution filled in a pair of wells and a flow passage in the chamber and controls the temperature to a specified temperature, and the second temperature controller (63) measures the temperature of a heating part (64) which heats the chamber (30) from the outside to indirectly heat the solution filled in the pair of wells and the flow passage and controls the temperature to a specified preheat temperature. Since the state and quantity of cells moving from one well to the other through the flow passage while holding the temperature of the solution at a specified temperature can be accurately observed and measured, accuracy for controlling the temperature of the solution can be remarkably increased.

Abstract: A closed air handling system for heating and/or cooling has an integrated damper mechanism for diverting discharge air into the attic or crawl space of a house, apartment, or other building, and for facilitating the introduction of fresh air into such building. Optionally, the damper has integrated louvers for use during an open position such that a venturi effect increases airflow by creating a vacuum between the louvers and the ducts connected to the discharge plenum.

Abstract: The present invention relates to a liquid discharge head that controls ink discharge direction using a plurality of heating elements. The liquid discharge head comprises, on a single semiconductor substrate (101), a plurality of heating elements (102a) (102b) that are adjacently disposed to each other in an ink liquid chamber (105) and generates bubbles in the ink supplied to the ink liquid chamber to discharge the ink from a nozzle (104a), a switching element (121a) that supplies power to the heating elements, and switching elements (121b) (121c) that control the ink discharge direction while supplying different levels of power to the heating elements or changing the timing of giving power thereto. On the semiconductor substrate, an energy supply wiring pattern (224) for supplying power to the heating elements and a control wiring pattern (236) for controlling the switching element (121a) and switching elements (121b) (121c) are provided in different conductive layers.

Abstract: A nutrient delivery device (10) for the delivery of nutrient in the form of a dissolvable fertiliser. The device includes a nutrient receiving chamber (16) which has an inlet at one end for receiving water from a water supply and an outlet at the other end. A filter (18) is provided at the outlet to prevent undissolved nutrient from flowing out to the outlet. In use, water flows through a valve assembly (14) such as a vacuum nutrient from flowing out of the outlet. In use, water flows through a valve assembly (14) such as a vacuum breaker positioned at the inlet to prevent any backflow of water and the water at least partially dissolves the nutrient source in the form of a plurality of prills within the chamber and then flows through the filter to the outlet. The filter comprises an elongate tube member having perforations (32) along the surface and has a conical cap (30) disposed within a path of the water flowing in from the valve assembly.

Abstract: A fuel injector nozzle assembly is disclosed. The assembly may include a nozzle casing, a first tip member, and a second tip member. The first tip member may extend longitudinally within the nozzle casing and may define first and second shoulders on the first tip member. The second tip member may extend longitudinally within the nozzle casing and may be arranged in predetermined rotational alignment with the first tip member. The second tip member may define a third shoulder on the second tip member configured to interact with the first shoulder to oppose rotation of the first tip member relative the second tip member in a first direction about a longitudinal axis of the first tip member. The second tip member may further define a fourth shoulder on the second tip member configured to interact with the second shoulder to oppose rotation of the first tip member relative the second tip member in a second direction about a longitudinal axis of the first tip member.

Abstract: A jetting dispenser has a dispenser body with a fluid channel and a fluid channel outlet within the fluid channel. A valve member is movable within the fluid channel for selective contact with a valve seat near the fluid channel outlet. A jetting nozzle is adapted to be coupled to the dispenser body, adjacent the channel outlet, and has a nozzle body with a plurality of nozzle outlets in fluid communication with the channel outlet via a plurality of fluid passages through the nozzle body. The valve member is moved by a valve driver to contact the valve seat and impart momentum to liquid material supplied to the dispenser such that a plurality of droplets of liquid material are simultaneously jetted from the plurality of nozzle outlets.

Abstract: The invention provides an electromagnetic fuel injection valve which is operated extremely normally, is excellent in a durability, can always obtain a stable injection amount, and can reduce an influence by a fuel, an atmospheric temperature and the like.

Abstract: A device for transport and cleaning of air by using electric ion wind, includes an elongated corona electrode), a target electrode and a direct current source that has one terminal connected to the corona electrode and the other terminal to the target electrode, the design and voltage of the corona electrode between the terminals being such that a discharge generating air ions occurs at the corona electrode. The target electrode has an extension in the longitudinal direction of the corona electrode an extension transverse to the longitudinal direction of the corona electrode. The target electrode has a certain permeability to the air flow that is generated between the electrodes, and the device has outlet openings for the air flow.

Abstract: An electrostatic spray gun includes a power supply, an enclosure having a wall and a valve providing access through the wall to evacuate the enclosure. Components of the power supply are housed in the enclosure and subject to the atmosphere within the enclosure.

Abstract: An apparatus includes a mill, a rotary actuator configured to apply torque to the mill, a sensor configured to sense a parameter corresponding to rotation of the mill and a controller configured to generate control signals based upon acceleration of the mill. Rotation of the mill is modified as a result of the control signals.

Abstract: A food waste disposer includes a food conveying section, a grinding mechanism, and a brushless permanent magnet motor operably connected to the grinding mechanism. A discharge device is configured so as to reduce the overall height of the food waste disposer.

Abstract: The improvements relate to shredders for paper and the like having a shredding mechanism with an opening through which shredded material passes out of the shredding mechanism, a compactor plate located beneath the shredding mechanism and including an opening, and a base, wherein the shredder has a waste bag support mechanism of which the compactor plate forms a part. The waste bag support mechanism is secured to the underside of the shredding mechanism towards the rear thereof for pivotal movement between an operating position in which an upper part of the waste bag support mechanism is close to the underside of the shredding mechanism, and a bag removal position in which the upper part of the waste bag support mechanism is pivoted downwards at its front away from the shredding mechanism.

Abstract: A demolition/scrap processing shears assembly includes pivotally connected jaws. The first jaw has first and second laterally-spaced shearing edges. The second jaw has third and fourth laterally-spaced shearing edges. The first and second shearing edges have a plurality of staggered shearing apexes that sequentially shearingly mate with the third and fourth shearing edges, respectively, as the shear assembly closes. As viewed from the side, the third and fourth shearing edges are offset from each other such that the first and third shearing edges shearingly mate with each other asynchronously relative to the second and fourth shearing edges as the jaws close. Staggering the shearing apexes and offsetting the shearing action of the left and right side of the shear assembly reduces the power that an actuator must generate to shear processed material.

Abstract: A system for utilizing a tape leader in a tape drive system. The tape drive system receives a first tape leader and buckles the first tape leader to a drive reel leader. Then the tape drive system threads the first tape leader and a second tape leader connected to the first tape leader through a tape path within the tape drive system using the drive reel leader. After threading the first tape leader through the tape path, the tape drive system retracts head protect pins while the second tape leader is still in the tape path. Subsequent to retracting the head protect pins, the tape drive system performs read/write operations on a data storage media, which is coupled to the first tape leader via the second tape leader inserted between the first tape leader and the data storage media.

Abstract: A data storage tape cartridge is disclosed. The data storage tape cartridge includes a housing, a reel assembly including a hub rotatably disposed within the housing, a storage tape wound onto the tape reel assembly, and a leader attached to a leading end of the storage tape. In this regard, the storage tape includes a primary tape portion extending from the hub to a first end and a transition tape coupled to the first end of the primary tape portion and extending to a leading end, wherein the transition tape is thicker than the primary tape portion.

Abstract: This webbing retractor has a multi-function gear made as rock gear 70. Pretensioner mechanism 50 has sleeve 72 and sleeve extension 73. Sleeve 72 and sleeve extension 73 are integrally structured at an axial center of rock gear 70, a member of rock mechanism 130. Rock mechanism 130 has rock gear main body 74 and ratchet teeth 76.

Abstract: A safety belt roll-up mechanism is provided, and includes a force limitation device that operates in a multi-stage manner and has a two-stage torque rod and a pyrotechnically operating switching device that couples the torque rod, in various clamping lengths, with a belt shaft. The extent of the belt strap unwound from the belt shaft is utilized for actuation of the force limitation device. A ratchet wheel is connected to the belt shaft via a reduction gear mechanism. A portion of the periphery of the ratchet wheel has a toothing for engaging the reduction gear mechanism. A further portion of the periphery of the ratchet wheel has a switching contour that rests against a contact pin of an electric switch. The switching contour has a profile that effects the connection or disconnection of the switching device for the torque rod.

Abstract: A portable hose reel assembly that includes a housing assembly structured to support a rotatable hose reel assembly on an axis, an elongated hose reel assembly coupled to the housing assembly and extending longitudinally about the axis, and a handle assembly having a handle member and at least one brace. The at least one brace is coupled to the housing assembly and extends generally parallel to the axis, the handle member coupled to the at least one brace and extends generally perpendicular to the brace.

Abstract: A method for knocking-off a web (12) round on a turret winder (10) by a knocking-off device (22) includes a pressure roller (24), in which the knocking-off device (22) and a coil (16) of the winder (10) are, through an abrupt relative movement, brought into a position in which the pressure roller (24) engages the periphery of the coil (16) and the abrupt movement is a pivotal movement (B) of the coil (16) about a pivotal axis that extends in parallel with the axes of rotation thereof.

Abstract: A leading end of a material web is threaded into a machine, such as a web-fed rotary printing press. The leading end of the web is coupled to a threading device which can be conveyed along a threading path. A first motor, in a receiving area of the web, and a second motor, in a delivery area of the web, are used to drive the threading device. During web threading, one of the motors is controlled with respect to web speed while the other motor is controlled with respect to a predetermined torque.

Abstract: A portable, hand held winding apparatus, a kit, and a method of using the winding apparatus, for rolling up or winding elongate bandages and the like, are disclosed. The winding apparatus includes a hand held rotary drive device having a motor-driven rotatable connector that is adapted to operatively engage a connecting member, the rotatable connector defining an axis of rotation. The winding apparatus also includes a tensioning member supportable on the rotary drive device, the tensioning member including a tensioning arm extending in a direction substantially parallel to the rotational axis of the rotatable connector of the rotary drive device, the tensioning arm defining a slot therein. The tensioning member may further be configured to include a tensioning mechanism. The winding apparatus further includes a winding peg configured to receive a bandage thereabout and including a connecting member extending axially therefrom.

Abstract: An aircraft flight control surface actuation system includes a plurality of flap actuators, and a plurality of slat actuators. The actuators receive actuator position commands from an actuator control unit and, in response, move flaps and slats between stowed and deployed positions. The flight control surface actuator control unit includes a plurality of independent actuator control channels. One or more of the independent actuator control channels is coupled to both a flap actuator and a slat actuator, and is configured to selectively supply the actuator position commands thereto.

Abstract: The invention relates to a transportation system for a wind turbine component such as a wind turbine nacelle or a section of a tubular wind turbine tower, said system comprising a wind turbine component with a rigid structure. The system further comprises at least one standardization means directly or indirectly connected to the rigid structure (6) of said wind turbine component (3), where said at least one standardization means defines a space enclosing said component. The invention also relates to a vehicle for a transportation system, a displacement system and a method of establishing a transportation or displacement system for a wind turbine component.

Abstract: A takeoff assist device for an air vehicle, such as an unmanned air vehicle is provided. The device features an electric motor and is much less complex and lighter than takeoff assist devices heretofore known. A body member is shaped to fit to a portion of the air vehicle. The body member defines a housing in which the majority of the components are housed, including the electric motor, a motor controller, an electrical power source and a main controller. A propeller is attached to a shaft of the electric motor outside of the housing and rotates with a shaft of the electric motor. In addition, there is a latch mechanism that removeably attaches the body member to the host air vehicle for takeoff, and then is controlled to release from the air vehicle after it is airborne at a desired airspeed and altitude.

Abstract: Device assisting with interception by an aircraft of a flight path segment located in a horizontal plane and a system of assistance with interception and follow-up of such a segment. The device includes means of determining a ground speed vector and means of displaying to present, on a screen, a means of indication (10) of the ground speed corresponding to a first rectilinear section (11) in the horizontal plane, connected to a symbol (7) whose angular orientation corresponds to the direction of said ground speed vector and whose length is variable, a means of interception approach indication (12) corresponding to a second rectilinear section (13) in the horizontal plane of variable width and provided for as an extension of first rectilinear section (11) and a means of indication (14) of the interception turn corresponding to at least one circular arc (15) in the horizontal plane, provided to extend second rectilinear section (13).

Abstract: Device assisting with interception by an aircraft of a flight path segment located in a horizontal plane and a system of assistance with interception and follow-up of such a segment. The device includes means of determining a ground speed vector and means of displaying to present, on a screen, a means of indication (10) of the ground speed corresponding to a first rectilinear section (10) in the horizontal plane, connected to a symbol (7) whose angular orientation corresponds to the direction of said ground speed vector and whose length is variable, a means of interception approach indication (12) corresponding to a second recipient section (3) in the horizontal plane of variable width and provided for as an extension of first rectilinear section (11) and a means of indication (14) of the interception turn corresponding to at least one circle arc (15) in the horizontal plane, provided to extend second rectilinear section (13).

Abstract: The invention is a process for landing a tailless or flying wing type aircraft having a nose and wings that produce lift. The process includes the step of allowing the nose of the aircraft to stay lower upon touchdown such that lift from the wings is reduced.

Abstract: The invention relates to an air guiding flap of an aircraft wherein one surface thereof faces an air duct and is exposed to a prevailing pressure in the air duct and whose opposite surface is exposed to the pressure of the relative wind flowing past the aircraft. The air guiding flap comprises an actuator for automatically opening and closing the air guiding flap which actuator cooperates with a device for controlling the position of the air guiding flap. In order to keep the stress on the air guiding flap low a force detecting device is provided which detects the force impinging on the actuator based on a difference between the prevailing pressure in the air duct and the pressure of the relative wind flowing past the aircraft. The controlling device adjusts the position of the air guiding flap such that the force impinging on the actuator at any one time is at least essentially zero.

Abstract: A passenger accommodation unit with a deployable bed includes a passenger seat and a passenger bed positioned relative to the seat and adapted for movement between a stowed position in which the bed is upright and adjacent to the seat, and a deployed position in which the bed is horizontal for use and overlaps and is supported in part by the seat. The unit can include a credenza positioned adjacent the seat and between the seat and the bed that supports the bed when deployed.

Abstract: The invention relates to a component (1) comprising a particularly shell-shaped base carrier (2) and at least one core element (6). The aim of the invention is to provide an improved component (1), wherein an intermediate layer (5) is inserted in between the base carrier (2) and the core element (6) in order to compensate tolerances, resulting in a positive power flow via the intermediate layer (4) and improved tolerance compensation.

Abstract: Opening and secure-closing system for doors comprising two doors (1,2) for accessing the interior of a chamber, which open towards the outside being hinged around two hinging axes (19,20), both doors (1,2) comprising a set of bolts (17,18) and the opening and closing system comprising additional means of opening/closing operation (26) and an overpressure door (3) located in one of the doors (1,2) which opens towards the outside, in such a way that the means of opening/closing operation (26) comprise a blocking bar (4), a blocking fitting (7) and means of retention (10) between the two doors (1,2) in order to provide a controlled and sequential opening/closing operation of the chamber, and the overpressure door (3) is opened automatically in the event of emergency due to overpressure, and it also participates in the controlled and sequential opening/closing operation of the chamber. ion of the chamber.

Abstract: An electrical insulating device for a linear component forming part of a fuel system subjected to risks of possible external electrical discharges formed by a part (13) made of insulating material attached to two metal flanges (15, 17) that allow inserting the device (11) between two parts of said linear component, said part (13) being formed by a cylindrical body (21) with a castellated crown (23) on its outer side, formed by longitudinal (25) and transverse (27) segments, and said metal flanges (15, 17) having transverse projections (31, 33) facing the transverse segments (27) of the castellated crown (23) for facilitating their attachment by suitable means (39).

Abstract: This invention relates to a method and system for increasing safety in chemical application from an aircraft. Wind speed, wind direction and other critical flight parameters are measured, calculated, recorded, and visually or audibly announced during the aircraft flight via onboard equipment, which parameters provide a means for the aircraft pilot to control chemical spray application and for unassisted automatic chemical spray cutoff and for limiting spray application outside an application zone or target area. Such parameters also provide a means for indicating the lift reserve of the aircraft and a means for determining atmospheric stability near the ground and providing the pilot with a record of the meteorological conditions at a particular location. The method and system of the present invention also provide a means for predicting appropriate aircraft upwind offset distance to compensate for predicted chemical spray drift.

Abstract: Method and arrangement for reducing the effects of a sonic boom created by an aerospace vehicle when said vehicle is flown at supersonic speed. The method includes providing the aerospace vehicle with a first spike extending from the nose thereof substantially in the direction of normal flight of the aerospace vehicle, the first spike having a second section aft of a first section that is aft of a leading end portion, the first and second sections having a second transition region therebetween and each of the sections having different cross-sectional areas, the leading end portion of the first spike tapering toward a predetermined cross-section with a first transition region between the predetermined cross-section and the first section. The first transition region is configured so as to reduce the coalescence of shock waves produced by the first spike during normal supersonic flight of the aerospace vehicle.

Abstract: A safety pre-impact deceleration system for a variety of conveyances includes a parachute structure formed from air bags inflated with gas. Alternatively, the parachute structure includes a canopy with orifices. Air spaces in the parachute structure or orifices in the canopy have adjustable and selective dimensions to control the operational parameters of the vehicle. The system includes sensors and rapid exposure rate cameras with continuous loop recording to measure operational parameters of the vehicle and to predict possible collision. Once a collision condition is detected, audio/video images are stored on storage media. The air bags are deployed and inflated. In addition to air bags constituting the parachute structure, a plurality of air bags are provided to be deployed external the vehicle to aid in a safe landing.

Abstract: A fuel tank of a spacecraft stores a liquid fuel and a pressurized propellant gas that drives the fuel out of the tank though a fuel extraction arrangement including a reservoir or fuel collection container and a tank outlet. A spiraling or J-shaped or hook-shaped fuel collection channel and plural obliquely sloping fuel flow channels connect the fuel collection container to an outlet pipe of the tank outlet. The channels are configured, dimensioned, oriented and arranged to ensure that fuel will be retained in the outlet pipe without leaking back into the fuel tank, even when the tank is oriented horizontally and has a low tank filling level. These structures produce a capillary pumping effect and use the surface tension to separate the fuel from the propellant gas, and allow the inner space of the collection container to be completely filled with liquid fuel.

Abstract: A truss structure for a panel array includes a plurality of deployed bays. The plurality of deployed bays in a first side and an opposing second side. Each side includes a first upper horizontal support member attached to a first vertical support member and collapsible on a first joint translating on a second vertical support member. A first lower horizontal support member is attached to the second vertical support member and collapsible on a second joint translating on the first vertical support member.

Abstract: An apparatus and method for indicating whether a coupler of a locomotive is in a coupled or uncoupled state is provided. The apparatus comprising: a sensor positioned on a portion of the coupler, wherein the sensor provides a real-time signal indicative of either a coupled or an uncoupled state of a coupler, wherein the signal is transmitted wirelessly by a transmitter in operable communication with the sensor. The method comprising: providing a signal indicative of the presence or proximity of a second coupler to the first coupler, the signal being provided by a sensor configured to provide the signal as the state of the coupler has changed; transmitting the signal wirelessly to a controller; processing the signal with a control algorithm resident upon the controller; and providing visually perceivable indication of the position of the coupler.

Abstract: To provide a timepiece in which it has been made possible to exchange an edge member, to which a glass has been fixed, without accompanying a case band. A wristwatch comprises an annular case band, a case back, an annular edge member, a glass, and a snap ring. A front side end part of the case band forming a fitting hole has an edge receiving face around the fitting hole and an engaging back face. A case back is detachably attached to a back side end part of the case band. The glass is fitted and fixed to an annular step part having been formed in the edge member. In the edge member there are provided a tubular part penetrating through the fitting hole so as to be capable of being inserted and disengaged, and a cover part overlapping with the edge receiving face. In the tubular part there is provided an annular attaching groove opening to an outer periphery of the tubular part. A snap ring is formed in a C-shaped form by a material having an elasticity.

Abstract: A pipe clamp cushion and a method for installing pipes and tube-like structures is provided by an polyester elastemer material that is independently connected to a support structure and has hinges molded as part of each arms of the clamp. The hinges are formed in a U-shaped arrangement, which does not compromise the material of the cushion, and thus allow the cushion arms to maintain strength and elastic properties. This arrangement permits easier installation for a wide variety of tube sizes and configurations.

Abstract: A mounting member has a tube, and a plurality of clamps. The clamps hold the tube or outer portions on both sides of the tube. Therefore, the external load on the mounted part can be minimized while at the same time the mounted part is easily held fixedly on a board such as a printed wiring board.

Abstract: A display-supporting frame includes: first rods, each of which has first and second side walls, one of the first side walls being formed with first hole units, one of the second side walls being formed with second hole units, each of the first hole units cooperating with an adjacent one of the second hole units to define a plane transverse to the first and second side walls such that each pair of the first and second hole units are respectively located at two sides of the plane; second rods, each of which is formed with a locking hole unit; and a plurality of fasteners for fastening the first rods to the second rods through extension of each of the fasteners through a selected one of the first hole units and the second hole units in a respective one of the first rods, and into the locking hole unit in a respective one of the second rods to engage the respective one of the second rods.

Abstract: The present invention relates to a bumper skin protection cover (22) including means (24; 32; 34; 38) for suspending it from a support.

Abstract: A musical instrument supporting bar with an adjusting device has a cam connected to an end of an inner tube of the supporting bar, which is mounted rotatably and slidably in an outer tube, and a collar mounted around the cam. The cam has an eccentric rod formed longitudinally. A collar is mounted around the eccentric rod, and the cam and the collar are mounted slidably and rotatably in the outer tube. When the inner tube is rotated relative to the outer tube, the eccentric rod is pressed against or released from an inner wall of the outer tube so that the relative position of the inner tube and outer tube can be adjusted conveniently.

Abstract: A display apparatus in which a supporting structure excellent in operability and appearance is realized is provided. A slide bracket (300) is provided to move up and down freely on a post (210) of a stand section (200), and a display panel section (100) and the slide bracket (300) are coupled together with a hinge section (310). The post (210) is provided with rack members (230A, 230B), which are meshed with gears (340A, 340B) provided on the slide bracket (300). Frictional rings (390) are provided to impart a frictional force to the rotating operation of the gears (340A, 340B) so that the slide bracket (300) stays at an arbitrary height of the post (210). Between the gears (340A, 340B) and the slide bracket (300), a spiral spring (370) is incorporated, and the spiral spring (370) is accommodated within a drum (360). The spiral spring (370) acts as a biasing force for causing the slide bracket (300) to move up through its biasing the gears (340A, 340B) to rotate.

Abstract: A movable arm includes a base secured to a mounting surface; a movable body pivotally attached to the base to rotate about the base and carrying an object; and a restoring body for biasing the movable body to a home position. An elastic modulus of the restoring body, a deformation amount of the restoring body in the home position and dimensions of individual parts are determined to ensure that the gravity acting on the movable body and the biasing force exerted by the restoring body are balanced regardless of the position of the movable body. Therefore, the position of the movable body can be maintained by the elastic force of the restoring body regardless of the frictional force and thus the movable arm is hardly affected by the wear, attaining a greater life span than in a case of maintaining the movable body by the frictional force.