Abstract: The present invention provides a double hook door mechanism for use in opening and closing aircraft landing gear bay doors.

Abstract: A speed brake apparatus reduces the airspeed of an aircraft by increasing aerodynamic drag. First and second brake panels are located on opposite sides of a portion of the aircraft, such as the fuselage, and are adapted to swing outward about a downstream hinge axis into deployed positions extending into the air stream. The panels are controlled by an operating device that includes a linear actuator. The actuator moves an operating head connected to a pair of toggle assemblies to convert linear movement of the operating head to the deployment and retraction movement of the brake panels.

Abstract: Systems and methods to distribute power in a system having a composite structure are provided. A particular aircraft includes a fuselage having a composite skin. The composite skin includes a first resin and a plurality of fibers. The fuselage also includes an expanded conductive patch bonded to an interior surface of the composite skin by a second resin. The expanded conductive patch is in electrical contact with the plurality of fibers. The fuselage also includes a connector in electrical contact with the expanded conductive patch.

Abstract: The invention is a mount for an electronic display device. The mount comprises a mount member that has a top face and a bottom face. Portions of the mount member are configured to engage portions of a mounting surface within the cockpit of an airplane. The mount also comprises a containment member spaced therefrom the mount member. A joint member is disposed in frictional contact with portions of the respective mount member and containment member. A base member, which can be configured for engagement with a portion of the electronic display device, can be connected to the joint member.

Abstract: Disclosed is an aircraft that comprises a fuselage, a left wing and a right wing opposite one another with respect to said fuselage and each enclosing at least one fuel tank. The aircraft further includes a control device that controls transfer of fuel from a tank on one wing to a tank on another wing, and an automatic pilot that detects a roll-wise inclination of the aircraft as a result of lateral dissymmetry. The automatic pilot is linked to the control device such that the automatic pilot controls the control device to transfer the fuel only at a condition of rectilinear and uniform cruising flight of the aircraft.

Abstract: A system and methods for airborne launch and recovery of aircraft. In one embodiment the system comprises a flexible tether configured to be towed behind an airborne mother ship. A drag device is secured to a distal end of the flexible tether to generate drag and maintain tension in the flexible tether. A reel associated with the mother ship anchors a proximal portion of the flexible tether and selectively lets out and takes up the flexible tether to adjust a length of the flexible tether. A capture mechanism associated with the aircraft engages the flexible tether to secure the aircraft to the flexible tether. In certain embodiments of the present methods, a flexible tether is deployed from an airborne mother ship. An aircraft translates forward and rearward along the flexible tether. Alternatively, the aircraft translates forward and rearward as the flexible tether taken up and let out from the mother ship. Prior to launch, the weight of the aircraft is transferred from the flexible tether to the wings.

Abstract: An aircraft wing comprising a leading element and a trailing element moveably coupled together, said elements being positionable relative to each other so that air can flow from the underside of the leading element over the top of the trailing element through a gap between the leading element and the trailing element, wherein a trailing edge of the leading element proximate to the trailing element is configured to disrupt air flow as it flows over said trailing edge and through the gap.

Abstract: A flight control system includes a controller which defines a controller displacement and a control surface which defines a control surface authority. A module operable to provide a displacement feel to the controller in response to a remaining portion of the controller displacement being greater than a remaining portion of the control surface authority and the module operable to re-reference a center of the controller displacement to equate the remaining portion of the controller displacement with the remaining portion of the control surface authority in response to the remaining portion of the controller displacement being less than the remaining portion of the control surface authority.

Abstract: A lightweight portable laptop computer stand which lifts the back of the laptop keyboard and the bottom of the display screen for improved ergonomics and increased cooling airflow.

Abstract: A mixing drill stand, for supporting a mixing drill having a mixing drill bit perpendicularly above a ground surface. The stand includes a rear panel and a pair of side panels that selectively fold substantially flat, and selectively deploy where the side panels extend substantially perpendicular to the rear panel, and support a drill support assembly in a horizontal position with respect to the ground surface. The drill support assembly has a central opening through which the mixing drill bit extends toward the ground surface while the mixing drill is supported by the drill support assembly.

Abstract: The invention relates to an integrative three-segment tripod. The tripod has a main bracket and at least one stand leg having an upper segment, a middle segment and a lower segment. The upper segment, the middle segment, and the lower segment are each telescopically connected together. The stand leg further includes a locking unit and a safety device. The locking unit fixes the middle segment to the upper segment and simultaneously fixes the lower segment to the middle segment. The safety device is associated with the locking unit and keeps the locking unit in the fixing state when the locking unit is in the locking position. Therefore, each stand leg of the tripod can be controlled easily by a single locking unit, and the safety device prevents the rotation lever from inadvertent release.

Abstract: A plate holder can include: a skirt having a top member and one or more side walls forming a cavity therebetween when the one or more side walls are resting on a substrate with the top member oriented away from the substrate; a base coupled with the skirt and located within the cavity, the base having one or more top suction device receptacles and one or more bottom suction device receptacles; one or more top suction devices coupled with the one or more top suction device receptacles such that the top suction device is oriented away from the substrate; and one or more bottom suction devices coupled with the one or more top suction device receptacles such that the bottom suction device is oriented toward the substrate.

Abstract: The apparatus for mounting a wheelchair pad provides a high degree of support and adjustability such that it can be used with wheelchairs from a wide variety of different manufacturers. This adjustability is also beneficial to the occupant of the wheelchair, as the adjustability can provide a wide variety of people with a more custom fit. In order to provide this custom fit, the claimed invention provides for depth adjustability, height adjustability and angle adjustability in both the vertical and horizontal planes of the amputee pad. Additionally the claimed invention can be installed on either side of the wheelchair.

Abstract: Provided is a clip that allows two securing members to be firmly joined to each other without requiring a special working process to the applied to either one of the securing members. The clip for securing joining a first securing member to a second securing member comprises a base plate portion formed with a through hole, a first clamping piece extending from the base plate portion in a front side direction, and a second clamping piece extending from a part of the base plate portion intermediate between the first clamping piece and through hole in the front side direction and further extending above the through hole. A threaded member is passed into the through hole from a back side of the base plate portion to fixedly attach the second securing member to the back side of the base plate portion.

Abstract: A shelf support including a rod portion and a seating portion extending therefrom is provided. The rod portion is adapted for fixing to a support wall. The seating portion includes a spiral-shaped outer surface which constitutes a plurality of support surfaces for supporting a bottom portion of a shelf, where, when the rod portion is fixed to the support wall and the bottom portion of the shelf is disposed above the seating portion, rotation of the shelf support causes a portion of the spiral-shaped outer surface to engage the bottom portion of the shelf.

Abstract: In one embodiment, a bracket for mounting a rod to a surface has a surface-mounting portion and a rod-attachment portion. The surface-mounting portion provides an interface between the bracket and the surface, and attaches to the surface using suitable fasteners such as screws or nails. The rod-attachment portion has an aperture formed therein that accepts a threaded fastener used to attach a finial to the end of the rod. The aperture has a dimension that is smaller than a diameter of the rod, and at least as large as a diameter of the fastener. In one exemplary method of using the bracket, the fastener, attached to the finial, is fed through the aperture into a socket in the rod. The finial is then rotated thereby coupling the finial to the rod until the rod-attachment portion is secured between the rod and the finial.

Abstract: An adjustable cup holder incorporates an elongated clamp assembly and cup support assembly. The clamp assembly has a proximal end and a distal clamping end. The cup support assembly is connected at the proximal end of the clamp assembly, and comprises a body portion and a pair of arcuate cup-encircling arms having respective spaced-apart free ends. A pivot pin enables pivot adjustment of the cup support assembly at the proximal end of the clamp assembly, such that the cup support assembly is movable between a desired in-use position depending from the clamp assembly, and a folded stowed position beside the clamp assembly. In the stowed position, the clamp assembly passes between the spaced-apart free ends of the cup-encircling arms and into an area defined between the cup-encircling arms.

Abstract: The disclose describes an improved holder for an archery bow which includes two arms pivotally attached to one another and a sliding support arm for resisting bending moments due to the weight of the bow being held at a distance away from a tree. The support arm and one of the arms each feature a separate fastener for securing the holder to a tree.

Abstract: A telescopic tube set for a bridge transport system is disclosed. The telescopic tube set includes cylindrical tubes each having an upper end, at which an upper ring is mounted, and a lower end, at which a lower ring is mounted, the cylindrical tubes having different diameters, pulleys mounted to respective inner wall surfaces of a part of the tubes, and extension/retraction lines each having an end connected to the upper ring of a corresponding one of the tubes, and an opposite end connected to the upper ring of another corresponding one of the tubes while extending around the pulley mounted to the tube interposed between the corresponding tubes. A plurality of bearings are installed at the lower ring to guide the tube, at which the lower ring is mounted, such that the tube extends or retracts straight in a longitudinal direction.

Abstract: An equipment support for attaching equipment to an aircraft comprises a gripper foot having a T-shaped slot that engages a track mounted to the aircraft floor. The gripper foot is mounted to a trunnion mount that enables the gripper foot to rotate freely about a vertical axis so that the gripper foot can negotiate curves along a non-linear track. The trunnion mount is mounted to the equipment support frame by means of a horizontal pivot. The horizontal pivot is held against rotation below a predetermined load by a torque-resisting element. If the floor track is warped, for example during a crash, the twisting loads transmitted from the floor track to the gripper foot overcome the torque-resisting element, which allows the trunnion mount and gripper foot to rotate with the floor track thereby allowing the gripper foot to remain attached to the track without imparting excessive loads on the track, gripper foot, or equipment support frame.

Abstract: A vibration damper assembly that may be attached and moved about a payload or optical mount surface of an optical structure such as an optical table. The vibration damper assembly may include a sensor and an actuator that may be disposed within a housing. In some embodiments, the vibration damper assembly or components thereof may be incorporated into an optical structure in the form of an optical component to be disposed or mounted on an optical mount surface of an optical structure such as an optical table. Embodiments of the vibration damper system may include a controller in communication with the damper assembly Embodiments of the controller may use adaptive tuning, auto-ranging selection of gain factors and other features in order to optimize damping performance.

Abstract: A protective cover support rack for electronic devices includes at least a protective cover body, a support lid and a hinge assembly. The protective cover body has an inner rim with an annular U-shaped trough formed thereon to hold and encase the body of an electronic device, and a lower half portion to cover the back side of the electronic device. The support lid can be adjusted at an angle smaller than 360 degrees to allow users to swivel to the front side as required to protect the screen of the electronic device, or adjust to a standing position to facilitate viewing, or fold it to fully in contact with back side of the protective cover body at a storing position, or swivel to facilitate hand grasping in use.

Abstract: A brace for concrete forms employing first and second form elements includes at least one attachment member adapted and constructed to secure the brace to at least one of the form elements. A span member is connected to the at least one attachment member, and has a length sufficient to hold the first and second form elements apart. At least one article securing mechanism secures the article associated with the concrete form to the brace.

Abstract: The present invention relates to a duct connector for working fluid, that is durable and corrosion resistant, and a valve with the duct connector. The duct connector has a head portion with an internal fitting portion that fluidly communicates with the inside of a cylinder housing of the valve. It is affixed to the housing in such a manner that the head portion protrudes from the outer surface of the housing with the fitting portion being positioned outside the outer surface of the housing. Duct connectors may be formed by insert molding using a resin with a tensile elongation ratio of 50%-400% and tensile strength of 50 Mpa -200 MPa.

Abstract: A typical flow-control valve has a housing forming a flow passage and a valve seat. An upstream and downstream valve bodies are is engageable with the seat and form upstream and downstream restrictions. A control piston defines therein outer and inner control compartments. This control piston is coupled to the downstream valve body for joint movement therewith. High-pressure and low-pressure conduits connect the outer and inner control compartments to the flow passage upstream of the upstream restriction and to the flow passage between the upstream and downstream restrictions. A connector element or stem connected to the upstream valve body extends through the control piston and has an outer end projecting out of the housing. A pressure reliever between the control piston and the outer end exerts on the connector element a force urging the upstream valve body upstream and generally equal to a pressure differential across the upstream restriction.

Abstract: A flow control valve controls the flow rate of heated water supplied from a boiler. The valve can normally/reversely turn and control the flow rate in a pipeline using first and second one-way motors, and stops power for one motor when the other motor is rotated. The valve includes a motor assembly including the first and second motors that have power transmission shafts which rotate in opposite directions, a gear assembly including first and second planetary gears that receive power from the motors and a sun gear disposed between and engaged with the planetary gears, a clutch structure between the first planetary gear and motor, and the second planetary gear and motor, that transmits or stops power, and a valve actuator including a shaft that reciprocates up/down by rotation of the sun gear and a valve unit fitted on the lower portion of the shaft that opens/closes the valve.

Abstract: The invention relates to a solenoid valve including a valve housing. A valve seat sleeve is fixed in the valve housing and defines a valve seat. A magnet armature defining a blind hole with a valve closing element positioned therein is movably positioned relative to the valve seat sleeve with the valve seat positioned in and engaging the blind hole such that the valve closing element is aligned with the valve seat.

Abstract: The metering servovalve (7) includes a valve body (8, 30), a shutter (45), and an electromagnet (15), and is housed inside a casing (2) of the injector (1). The electromagnet (15) activates a movable armature (16) performing a travel defined by a stop member (19) carried by the electromagnet (15), which is fixed inside the casing by a threaded ring nut (40) with the interposition of at least one deformable shim (48). The ring nut (40) is screwed to a predetermined tightening torque to a thread (46) on the casing (2) to elastically deform the shim (48). And the shim (48) is defined by a metal ring with, for example, an L-, C-, S-, Z- or ?-shaped cross section.

Abstract: A synchronous moving device includes: a device body; a movable portion which is provided in the device body; a feed screw shaft which is supported on the device body; a nut member which is thread-engaged with the feed screw shaft; a coupler which couples the movable portion and the nut member; and a cable binder which supports and guides a cable wired into the movable portion, wherein: the coupler includes a first member fixed to the movable portion, a second member fixed to the nut member, and an intermediate member interposed between the first and second members for absorbing deflecting motion of the feed screw shaft; and an end portion of the cable binder on a side of wiring of the cable into the movable portion is connected to the second member through a connection member and moved in synchronization with the movable portion.

Abstract: A hand tool for lifting and separating objects. The hand tool includes a body member and a handle member. The body member includes a shaft member having a linear configuration, a neck member, and an elongated member. The shaft member includes a first end portion and a second end portion. The first end portion of the shaft member is tapered into a planar surface. The neck member extends obtusely from the second end portion of the shaft member. The neck member includes a proximal end portion and a distal end portion such that the proximal end portion of the neck member merges with the second end portion of the shaft member. The elongated member extends from the distal end portion of the neck member, such that, the elongated member is substantially parallel to the shaft member. The handle member is configured on the elongated member.

Abstract: A lifter of furniture and other loads has a wheel-mounted base comprising a plurality of radially extending beams and a transversely mounted, planar support structure. One of the beams lies within the plane defined by the support structure. The support structure has a bracket extending transversely away from the floor surface and adapted to accept a telescoping support in a sliding fit. The telescoping support lies in the plane of the support structure and is adapted to engage a bottom surface of a furniture load and urge it vertically upward relative to the floor surface. The telescoping support and/or the bracket have at least one transverse bore therewithin to accept a cotter pin therethrough as a locking mechanism. The telescoping support is urged upward by a jack mechanism which may be removable for use with other lifters once the telescoping support is locked into position relative to the bracket.

Abstract: A reel structure for a marine fabric tape includes a reel device pivoted to an engaging seat. When a handle of a windlass is turned, a flat rod will be driven to rotate a gear shaft which then drives a gear disc to rotate. Because a head portion is positioned in an axle shaft, a fabric tape is rolled up along with the axle shaft to form a circular shape, providing an even applied force for rolling up the fabric tape.

Abstract: A roll-over valve attaches over an existing carburetor float bowl vent tube and closes when a car is involved in a crash to prevent or reduce fuel from escaping from a tilted or inverted carburetor and starting a fire. Carburetors are used in many special interest cars and race cars. The carburetors include float bowls containing fuel and the float bowls are vented to outside air by the carburetor vent tubes. The carburetor vent tubes are generally vertical tubes reaching upward from the carburetor into an air cleaner or the volume above the carburetor. The roll-over valve includes a compression fitting or other connector and is easily fitted to the carburetor.

Abstract: A foam generating apparatus has a body with an inlet end at one end and an outlet end at the other end; a wind averaging piece contained in the body and adjacent to the inlet end, a buffer space being defined between the side of the wind averaging piece toward the inlet end and the inner edge of the inlet end, and the wind averaging piece being provided with a plurality of radially arranged through holes; and a porous body disposed in the body and abutting against the side of the wind averaging piece toward the outlet end, and a foam collecting chamber being defined between the porous body and the inner edge of the outlet end.

Abstract: A humidifier for adding humidity to an air stream of an HVAC system includes a housing configured to be mounted to a surface of an HVAC duct. A back side of the housing may be positioned adjacent to an opening in the surface of the HVAC duct, and the housing may be configured to hold a humidifier pad in an operating position. The housing may define a first air flow path from a first side of the humidifier pad to the opening in the surface of the HVAC duct when the housing is mounted to the surface of the HVAC duct. The housing may further define a second air flow path from a second side of the humidifier pad to a bypass aperture. At least part of the second air flow path may be defined by a bypass duct member. The bypass duct member may be field-reconfigurable between at least a first position resulting in the bypass aperture being located at a first location, and a second position resulting in the bypass aperture being located at a second location.

Abstract: A cooperative mounting arrangement for an end member or spacer of a gas spring assembly includes a recess formed into one of the end member and the spacer. A projection is provided on or along an associated structural component. The recess receives the projection such that lateral forces acting on the end member of the gas spring assembly can be transferred to the associated structural component.

Abstract: Mechanical control shock-absorbent anti-recoil mechanism intended for various fields such as industrial and civil constructions, machine building industry, robotics et cetera, its purpose being to protect against the impact forces, recoil forces or vibrations. The mechanical control shock-absorbent anti-recoil mechanism comprises a mobile holder X, a joint lever and spring mechanism Y and an end holder Z. The mechanical control shock-absorbent anti-recoil mechanism has the role of absorbing and a cancellation of the impact forces and recoil forces, while a mechanical control mechanism K adjust concomitantly and continuously the tension of the absorbent springs and the annulling springs in order to decrease or to annul the impact force.

Abstract: A hydraulic mount has an upper support member and a lower support member. An upper elastomeric spring and a lower elastomeric spring are disposed between the upper support member and the lower support member to define an upper fluid chamber and a lower fluid chamber. A channel extends between the upper and lower chambers. During compression and extension of the hydraulic mount, fluid transfers between the upper and lower chamber to provide a damping force for the hydraulic mount.

Abstract: A fluid filled type vibration damping device wherein an outer tubular mounting member is externally fitted onto the collar sleeve at an externally fitted section formed by a tapered tube portion of the outer tubular mounting member, by means of a diameter reduction process. A mating projection projecting diametrically inward is formed on an inside peripheral face of the outer tubular mounting member, while a seal rubber layer having a thickness greater than a projecting height of the mating projection is formed covering the inside peripheral face of the outer tubular mounting member with the mating projection covered by the seal rubber layer. A location and projecting height of the mating projection are arranged so as to prevent an entry of another outer tubular mounting member into a large-diameter opening of the tapered tube portion during pre-treatment.

Abstract: The present invention provides a robot system in which a robot and a positioner are combined with each other. In the robot system, footprint is reduced and a production line having a short tact time between steps is formed. The robot system includes a work object, robots that perform a work operation on the work object, and positioners that position the work object, wherein the robots are provided on frame members of the positioners.

Abstract: A receiving jig device and a working machine using the device. The receiving jig device includes a base table, a bearing member, a rotating axis supported by the bearing member, a rotating device for rotating the rotating axis, a first receiving jig having a supporting arm fixed to the rotating axis, a second receiving jig having a supporting arm connected rotatably to the rotating axis, and an engaging device for causing the supporting arm of the first receiving jig and the supporting arm of the second receiving jig to be brought into a connected or a disconnected state.

Abstract: A worktable having first and second portions that are removably coupled to one another. When the first and second portions are decoupled from one another they can be arranged into free-standing positions where they can be used as sawhorses.

Abstract: A sheet processing apparatus includes a holding portion that nips and holds a booklet, which includes folded sheets, by a pair of holding members opposite to each other; and a pressing portion that enters a gap between the pair of holding members, wherein the pressing portion presses the spine of the held booklet so as to deform the spine of the booklet; wherein the pressing portion has plurality of pressing members, each having a different thickness in the thickness direction of the booklet, and the pressing member capable of entering the gap between the pair of holding members, and having the thickness closest to the thickness of the booklet which is nipped and held by the pair of holding members is selected among the plurality of pressing members so as to perform the deforming process.

Abstract: A paper tray of printer is provided, which includes a paper tray body, a slide shaft, a first pick arm, a second pick arm and a paper width guide. The first pick arm is fixed on the slide shaft, and the second pick arm is slidely disposed on the slide shaft. The paper width guide is disposed on the paper tray body and is connected to the second pick arm through a linkage device to drive the second pick arm, so that a position of the second pick arm varies along with a position of the paper width guide. Accordingly, an interval between the first pick arm and the second pick arm can be varied along with a size of a paper, so as to avoid paper skew when the paper is fed.

Abstract: A paper-stopping mechanism of an automatic document feeder is provided. The paper-stopping mechanism comprises an auxiliary gear, a traction member and a paper-stopping arm. As a paper pick-up arm of the automatic document feeder is moved upwardly or downwardly, the auxiliary gear is rotated in different directions. Upon rotation of the auxiliary gear, the auxiliary gear is engaged with a rack of the traction member to drive movement of the traction member. Consequently, a transverse rod of the traction member is sustained against the paper-stopping arm or raises the paper-stopping arm. When the transverse rod is sustained against the paper-stopping arm, the paper-stopping arm fails to be rotated in the paper-feeding direction, so that the function of stopping the paper is achieved.

Abstract: An arrangement is provided such that a pad pressing means for pressing a separation pad against a pick roller is formed in a reverse U-shape, and a pressing spring for pressing the pad pressing means to press the separation pad against the pick roller is provided on a central portion of the pad pressing means. The pad pressing means is structured so as to have a rotating fulcrum to be rotatable back and forth with respect to a rotating direction of the pick roller about a connecting portion of the pad pressing means for connection to the pressing spring. To ensure that a large load will not be applied to the entire pad pressing means when thick paper or the like is fed, a rotating arm may be provided so that the entire pressing means including the pad pressing means is rotatable about a predetermined position set at the rotating fulcrum which is the connecting portion for connection to the pressing spring.

Abstract: A remaining amount detector measures beforehand a distance H where there is one sheet. A motor displaces a lifting plate to a paper-feeding position upon storing paper in the feeding unit. The remaining amount detector measures a distance y1 to the lower face of a paper stack. Thereafter, upon transport of paper from the stack, a control unit causes the remaining amount detector to measure a distance y2 for every predetermined number n of fed sheets. A remaining sheet calculation unit calculates a displacement y1?y2=?y to the bottom of the paper stack S, and calculates the thickness of one sheet on the basis of the displacement ?y and the number n of fed sheets (t=?y/n). The remaining sheet calculation unit divides the thickness (H?y2) of the paper stack by the thickness t of one paper sheet, and calculates the number of remaining sheets m as (m=((H?y2)/t)+1).

Abstract: The invention relates to a sheet guide element for use in an apparatus for transporting sheets by means of a gripper system having at least two grippers spaced apart from each other and a sheet guide surface defined by the sheet guide element. Here, the sheet guide element is provided with depressions in the sheet guide surface, running parallel to the transport direction, at least in some sections, in order at least partially to accommodate the grippers, so that the sheet guide surface described by the sheet guide element in the transport direction runs, at least in some sections, at the same height as the movement path of the sheet leading edge fixed in the gripper system.

Abstract: A medium-directing device includes: first-third roll members, the third roll member contacting the first and second roll members in first and second regions, respectively; and a directing member having first and second directing surfaces and being rotatable between first and second positions such that the directing member, when located at the first position, directs a medium conveyed along a first conveyance path toward the first region via the first directing surface and directs a medium conveyed from the second region toward a second conveyance path via the second directing surface, the directing member including a region of the second directing surface on a side closer to the second region relative to a bent portion, in which, when the directing member is at the first position, a distance between the second directing surface and a tangential line between the second and third roll members increases toward the second region.

Abstract: Gaming apparatus including balls for a game of chance with a housing having at least a partly transparent space with balls. Each individual ball indicates one unit of jackpot value and the number of balls is higher than the number of units making up a jackpot. It further includes at least one tube for blowing in pressurized air to the space, a control unit, a member for the creation of air flow under pressure and a member for raising and sinking of posts. The bottom of the space is provided at least in one part with at least one recess, so that all static balls always lie in a group within the recess. Vertically movable posts with a bearing on the top for only one ball are located within the recess. Air flow blown into the space moves the balls at random and after air flow is discontinued, balls stop in groups in the recess at the bottom, the posts are raised and each selects one ball, the value units of which make up each jackpot.