Abstract: A system for fastening a covering on a surface includes a first assembly comprising a first retaining element; and a second assembly comprising a second retaining element; the first and second retaining elements being configured to engage each other so as to form a reversible bond; the system being characterized in that the first retaining element comprises an array of retaining elements comprising hooks having a height (Hc) lying in the range 0.05 mm (0.0020 in) to 1 mm (0.039 in), and the second retaining element comprises an array of retaining elements comprising loops having a height (Hb) lying in the range 0.1 mm (0.0039 in) to 3.0 mm (0.12 in).

Abstract: A prefabricated wall panel has a precast body including at least one decorative design element. In addition, the wall panel includes a mounting element having a first end embedded in the precast body and a second end projecting from the precast body. A groove is formed between the precast body and the second end of the mounting element along a first edge of the precast body. A tongue is formed along a second edge of the precast body opposite the first edge. The tongue and groove cooperate to allow prefabricated wall panels to be more easily installed on a support substrate.

Abstract: A method of separating a floorboard material wherein the material has wood fibers oriented essentially in one direction.

Abstract: A fastener unit and related method for securing a board to a support is provided. The fastener unit includes a spacer block, a grip element extending from the spacer block and configured to fit in and engage a groove of the board, and one or more resilient compression elements extending from the spacer block. The one or more resilient compression elements can be a joist leg configured to engage a joist, or it can be vertically compressible toward a first plane that is transverse to a vertical axis of the spacer block so that portions of it can compress from an open mode to a compressed mode and fit within, then forcibly expand within the groove, thereby securing the spacer block in a position adjacent the groove to establish a gap between the board and another board. A related method of use also is provided.

Abstract: An anti-explosion flooring material is disclosed. The material is prepared by foaming modification and rust prevention treatment of an iron alloy material and other auxiliary materials having components in percentage by weight: 85% of iron, 8% of manganese, 6% of silicon, and the remainder carbon. Because a foaming agent and rare earth are added, the static conducting performance of the flooring material is improved.

Abstract: A structural element, including a base portion and a connecting central pin, has its base portion formed hallow, and having an internal reinforcement in the shape of WOW or MOM, to connect these elements with an insertable central pin so that the cross-section of the pin corresponds to the shape of the chamber between the reinforcements, when the upper surface of the structural element has longitudinal grooves, and is made from a modified polymer or elastomeric material comprising India rubber mixtures. The foundation is monomer ethylene propylene diene or natural rubber or styrene-butadiene rubber and/or combinations of the natural rubber/styrene-butadiene rubber, or thermoplastic elastomers, whose base is monomer ethylene-propylene-diene or polypropylene/monomer ethylene-propylene-diene or polyvinylchloride, or thermoplastic vulcanizates, whose base is monomer ethylene-propylene-diene and polyethylene or natural and/or synthetic rubber, modified by polyethylene or polypropylene.

Abstract: A drywall mud applicator wheelless control tube is provided. The drywall mud applicator wheelless control tube has a plastic component (in an embodiment) having a rubber o-ring or spring which provides pressure to a slanted cylindrical ledge protrusion which allows the control tube to slide up and down a main mud applicator tube without the need for wheels on the control tube. As a result, the wheelless control tube increases the sliding and smoothness of the control tube as it slides over the main mud applicator tube.

Abstract: The inflatable scaffolding is a self-erecting structure that forms a raised working platform similar to a scaffolding. The inflatable scaffolding comprises a plurality of inflatable bladders, a flooring, a guarding, a ladder, and a pump. The plurality of inflatable bladders is a stack of bladders. When pressurized air provided by the pump inflates one or more bladders selected from the plurality of bladders, the span of the distance of the vertical height is increased. The flooring and the guarding are located on the surface of the plurality of inflatable bladders distal from the supporting surface. When each of the one or more selected bladders is fully inflated, flooring and the guarding form a raised working platform that is similar to the structure commonly referred to as scaffolding. To erect the scaffolding to it greatest vertical height, all the inflatable bladders contained within the plurality of inflatable bladders are inflated.

Abstract: A form assembly for creating structural supports is disclosed. Embodiments of the present invention provide a form assembly for molding a structural support of a predetermined configuration using a moldable forming composition. The present invention provides non-planar interlocking stackable form members for adjusting the height of molded support structures such as joists and beams.

Abstract: A structural rod protective device for preventing injury to persons falling on structural rods includes a first panel. Each of a pair of second panels is coupled to and extends perpendicularly from a respective opposing edge of the first panel to define a channel. Each of a plurality of slats is coupled to and extends between the second panels. The plurality of slats defines a plurality of slots. The second panels are configured to selectively position over linear and nonlinear rows of structural support rods, such as rebar. Each rod is inserted into a respective slot so that an end of the rod abuts the first panel. Persons falling on the rods are protected from impalement upon the rods.

Abstract: The present invention is an artificial surfing reef for modifying a body of water's bathymetry to create surfing waves. The artificial surfing reef is a shaped structure made up of many sized and shaped Expanded Polystyrene Geo Foam blocks. As swell moves toward the shore, its bottom is resisted by the leading edge of the Expanded Polystyrene Geo Foam artificial surfing reef. As the swell transverses over the Expanded Polystyrene Geo Foam Artificial reef, the wave topples over and forms a plunging surfing wave. An earth anchor, connected to a cable, linked to a round shaped anchor disc, is attached to each Expanded Polystyrene Geo Foam block for maintaining the foam artificial reef at a desired location submersed underwater. A plurality of Expanded Polystyrene Geo Foam blocks may be attached to one another and configured so as to define a surf reef, which enhances the suitability of waves for surfing.

Abstract: A pool cover winding system has first and second end supports rotatably supporting a shaft for receiving a pool cover wound around it. A bidirectional piston motor operates under control of a valve arrangement connecting a source of water pressure to a first inlet to generate rotation in a first direction for winding a pool cover around the shaft, and to a second inlet to generate rotation in a second direction for unwinding a pool cover from the shaft.

Abstract: A pool cleaning assembly for cleaning an above ground pool includes a hose that may be fluidly coupled to an intake of a filtration unit of a pool thereby facilitating the filtration unit of the pool to generate suction in the hose. A first tube is selectively and fluidly coupled to the hose to generate suction in the first tube when the hose is fluidly coupled to the intake. A plurality of second tubes is provided and each of the second tubes is selectively and fluidly coupled to the hose to extend a length of the hose. A plurality of cleaning attachments is provided and each of the cleaning attachments is selectively and fluidly coupled to the hose. Each the cleaning attachments is manipulated for cleaning an inside surface of a pool. A holding unit is provided and a pool filter is positioned thereon for cleaning the pool filter.

Abstract: A pool cleaner including a first filter assembly and a second filter assembly is provided in the present disclosure. The first filter assembly includes a first housing defining a first chamber, where the first housing is provided with a first water inlet and a first water outlet; and a first filter device disposed in the first chamber configured to perform a first filtration to water from the first water inlet. The second filter assembly includes a second housing defining a second chamber provided with a second water inlet, the second water inlet is connected with the first water outlet; and a second filter device disposed in the second chamber configured to perform a second filtration to the first filtered water. The first housing is detachably connected with the second housing. The pool cleaner in the present disclosure has a good filtering effect and is easy to disassemble.

Abstract: A cleaning robot may be provided and may include a housing comprising at least one inlet and an outlet; a filtering unit for filtering fluid; a bypass mechanism for bypassing the filtering unit; and a fluid suction unit that is arranged to direct towards the outlet fluid that (a) passes through the at least one inlet and (b) passes through at least one out of the filtering unit and the bypass mechanism.

Abstract: A wind turbine tower access panel is disclosed and is removably fixable at a service aperture in a tower wall to thereby close the aperture. The access panel is generally planar and extends radially about an axis normal thereto. Additionally, the access panel includes a set of two or more fixing elements configured to securely fix the access panel in place at the aperture. Each fixing element includes an axial clamp, the clamp including an anchor fixed to the access panel, a clamping force adjuster and a clamp head having a clamping surface. The clamp head includes a relatively deformable resilient material which deforms under an applied clamping load of the clamp thereby applying a clamping force to the tower wall.

Abstract: Ballasted Attachment for Temporary Truss Structures or BATTS are used to support Temporary structures typically built in the live event, trade show, and special event marketplace. BATTS provide a quickly deployed, leveled and stable base for which one can mount aluminum box truss too. This allows tower construction equal to the capacity of the truss itself and a flexible outrigger attachment in which many engineering requirements can be achieved. BATTS provide a ballast point to resist the overturn moment and uplift moment of concert roofs and other system that are exposed to environmental conditions. BATTS are constructed from steel and aluminum and possess substantial self-weight.

Abstract: A three-dimensionally-adjustable spike for securing a post comprises: two C-shaped walls, two wrench-accessible openings formed in the two C-shaped walls, a base molded to the two C-shaped walls, two post-elevating struts welded to the base, post-clamping screws screwed into the two C-shaped walls and the post, convex bolts each having a convex bolt bottom, concave upper washers each having an upper concave surface engaging with the convex bolt bottom, concave lower washers each having a lower concave surface, convex locking nuts each having a convex nut top engaging with the lower concave surface for three-dimensionally adjusting and securing the stanchion base and the post perpendicularly to the ground, a hammer plate, plate nuts welded to the hammer plate for stationarily securing the convex locking bolts to the hammer plate, spiral blades, offset spiral shovels, and a spike welded to the spiral blades, the offset spiral shovels, and the hammer plate.

Abstract: A tent is designed for use in the air, connected at its vertices to trees or the like. The tent is further designed with enough support from an independent support structure to create a shelter there-in while in the air or on the ground. Further, the tent is built atop a floating mat or base. In order to provide enough strength to the base that it can be used to float the entire tent or hold the tent airborne, straps extend from each vertex of the mat through a central portal and connect back to themselves. From these straps, loops are further created to attach the tent, by way of the loops, to trees while the entirety of the mat is buoyant enough to hold the tent and people there-in afloat.

Abstract: Kits for retrofitting an all-terrain vehicle with a compact, collapsible awning system include a collapsible canopy having a plurality of securing elements, an attachment mechanism having a first end coupled to a first side of the canopy and a detachable second end, a pole configured to associate with any of the plurality of securing elements and to support the canopy, and a tie-down configured to associate with any of the plurality of securing elements and to extend the canopy such that when combined with at least the pole, the canopy forms an overhead structure. The second detachable end of the attachment mechanism can be associated with a connection point on the all-terrain vehicle, and when extended the awning can form an overhead shelter adjacent to the all-terrain vehicle, providing shade and/or temporary protection from the elements.

Abstract: An arthritic-assisting one-person-deploying canopy includes: an adjustable ring canopy, a central intersector, foldable top trusses attached to the central intersect and the adjustable ring canopy, top-truss connectors bolted to the foldable top trusses, foldable corner trusses bolted to the foldable top trusses, foldable side trusses, four upper corner intersectors bolted to the foldable top trusses and the foldable side trusses, four upper posts attached to the four upper corner intersectors, four lower corner intersectors slid on the four upper posts and bolted to the foldable corner trusses and the foldable side trusses, four arthritic-a hooks, four lower posts inserted inside the four upper posts, post-height-adjusting holes drilled in the four upper posts and the four lower posts, an adjustable central canopy, a central post attached to the central intersector, a central-post hole formed in the central post, a central-innersurface-locking spring inserted inside the central post, an arthritic-assisting s

Abstract: A bungee ball device includes a ball and a cord loop having a pair of cord segments. The ball has a flat part on it where the cord loop segments extend therefrom. The cord segment has at least one flat surface that engages the flat part of the ball when the bungee ball device is in use. The cord can include a tab extending from a portion thereof. The tab makes it easier to grasp the cord and stretch it to allow the ball to be removed from the space created by the cord segments and release the bungee ball device from its secured position. The ball and cord loop have a one-piece molded construction. The flat part on the ball and flat surface on the cord segment can be optional.

Abstract: A lock assembly comprises a housing, a handle, and a latch plunger operably connected with the handle. An exterior key lock and interior lock knob have a locked and unlocked position. A lock cam is rotatably and operably connected with the key lock and interior lock knob for rotation therewith. A crank arm of the lock cam is operatively coupled with a deadbolt lock movably mounted in the housing for shifting between a locked position and an unlocked position. The deadbolt lock is also operably coupled with a motor, wherein a motor cam clutch is operably coupled with the motor and operably interposed between the lock cam and the motor, wherein the motor cam clutch allows rotation of the lock cam between the locked and unlocked positions without rotating the motor cam clutch or a motor shaft of the motor.

Abstract: An interconnected locking system in which multiple locks may be interconnected to be locked and/or unlocked in a coordinated manner. In one embodiment, the locking system allows a user to lock or unlock a door with multiple locking points with a single activation of one of the locks, such as when a deadbolt or lever is activated. The multiple locking points communicate together wirelessly, for example, to activate all the locking points as desired or set by the user.

Abstract: Locking devices and, more particularly, locks that are electronically operable and controllable by mobile devices such as telephones, PCs, tablets and the like, include a lock body with a slider that actuates the lock into a locked state and software in the mobile device that operates the lock to an unlocked state.

Abstract: The present application discloses systems and methods of providing different functionality to EAC devices using multiple algorithm/operand pairs, each tied to one or more different functions.

Abstract: A wireless ultra-low power portable lock may be realized as a lock apparatus including: a locking mechanism having at least locked and unlocked states, the locking mechanism operable to provide physical resistance to being unlocked when in the locked state; an actuator operable to move the locking mechanism from the locked state to the unlocked state in response to a received signal; and a controlling unit configured to control the actuator and to receive one or more signals from one or more devices external to the lock apparatus.

Abstract: A constant-current controller that supplies a constant current to an inductive load. This controller comprises an electric control circuit module. The electric control circuit module comprises a primary switch and a secondary switch. During a time interval in which the primary switch is closed (ton), the secondary switch is open and the voltage across the inductive load is equal to the source voltage (Vs). At time ton until the end of a time interval (T), zero volts appears across the inductive load. During this interval, current continues to flow as supplied by the energy stored in the inductance. The periodic current in the inductive load becomes constant with a sufficiently large PWM switching frequency and is dependent upon the parameters of the control circuit and the duration of ton.

Abstract: A lock capable of locking a movable door includes a lock shell having opening parts, and hook tongues extending out of the opening parts. The lock further includes lock tongue support frames, lock tongue reset springs, left and right first guide grooves, and shifting blocks. The lock tongue support frames are movably disposed on the lock shell and combined with shaft pins. The hook tongues have lower shaft holes and rotatably sleeve the shaft pins via the lower shaft holes. Each lock tongue reset springs has one free end combined with the lock tongue support frames, and another one free end combined with the hook tongues. The left and right first guide grooves are symmetrically-arranged and correspond to the shaft pins. Two ends of the shaft pins respectively extending into the left and right first guide grooves. The shaft pins drive the hook tongues to move to be unhooked or locked when the lock tongue support frames move to drive the shaft pins to move along the left and right first guide grooves.

Abstract: Locks, systems and methods of monitoring a lock, the lock having a hub with a slot rotatable by a handle to open and close a latchbolt. A locking member is moveable into and out of engagement with the hub slot to prevent and permit movement of the hub and latchbolt. A sensor on the lock, adjacent the hub and locking member, monitors a moving lock component. The sensor may sense the position of the locking member in or out of engagement with the hub slot. The sensor may be a reed switch actuated by a magnet on the moving lock component. The lock may further include a magnet mounted on the hub and the sensor may comprise a reed switch capable of being actuated by the magnet on the hub. The lock and system may include an external control unit having an alarm for controlling operation of the lock.

Abstract: An electro-mechanical locking device, particularly for cabinetry, with some embodiments used in connection with a drawer slide.

Abstract: A theft deterrent device includes a locking portion and a housing portion. The locking portion includes a locking mechanism. The housing portion includes a housing portion wall. The housing portion wall comprises a first material and is configured to house a second material within the housing portion wall. The second material is made of a different material than the first material. The second material is selected such that a cutting tool will be hindered when trying to cut through the housing portion.

Abstract: A detachable accessory for a saddle-ride vehicle includes a latching assembly supported on a side plate and having a latch member and handle. The latch member has a hooked latching portion and an elongated portion. The latch member is supported at a fixed pivot on the side plate for rotation between unlatched and latched positions. The handle is supported on the elongated portion and is biased in a first direction so that an end portion of the handle follows the rear edge of the side plate and forms a detent mechanism including a male detent member, a first receptacle to receive the male member to hold the latch member in the unlatched position and a second receptacle to receive the male member to hold the latch member in the latched position. The first receptacle is shallower than the second. A cam surface extends from the first receptacle to the second.

Abstract: An anti-theft device for securing an article of merchandise against unauthorized removal from a display counter. The anti-theft device includes two pairs of arms slidingly disposed within the housing. Grips are disposed on distal ends of the arms and are configured to receive and secure edges of an article of merchandise. A locking mechanism is disposed within the housing of the anti-theft device. The locking mechanism includes two locking components in a sliding configuration with respect to one another. Complimentary gear teeth are disposed on the outer edges of the locking component and the inner edges of the arms. An actuator transitions the locking components between a first unlocked configuration in which the gear teeth of the locking components are retracted away from the gear teeth of the arms, and a second locked configuration in which the gear teeth of the locking components engage the gear teeth of the arms.

Abstract: A mobile device lock has a main body, a lock body, and a fastening set. The lock body and the fastening set are respectively mounted to the main body. The fastening set may move relative to the main body when the fastening set is inserted into a cavity of a mobile device, two sliding blocks of the fastening set fill the cavity, and then the fastening set is engaged with the main body. Therefore, the mobile device can be locked without using any key.

Abstract: A lock for closing a door with respect to a frame. The lock includes a lock body mounted on the door and a striker mounted on the frame, or vice versa. The lock body includes a catch element mounted so as to rotate between a striker keep position and a striker release position; elastic means suitable for driving the catch element from the striker keep position to the striker release position; a lever suitable for moving between two positions, a closing position in which it maintains the catch element in the striker keep position and an opening position in which it is disengaged from the catch element; and a service actuator suitable for applying a force f on the lever so as to bring it from the closing position to the opening position. The lock body further includes an emergency SMA actuator suitable for applying a force on the lever so as to bring it from the closing position to the opening position.

Abstract: An electronic latch assembly for a closure device of a motor vehicle, having an actuator group operable to control actuation of the closure device and an electric motor controllable to drive the actuator group and supplied, during a normal operating condition, by a main power source of the motor vehicle providing a main supply voltage (Vbatt); the electronic latch assembly has a backup energy source, and a control unit controlling the backup energy source to supply the electric motor during a failure operating condition. The backup energy source has a supercapacitor group, which stores energy during the normal operating condition and provides a backup supply voltage (Vsc) to supply the electric motor (9) during the failure operating condition.

Abstract: A two-motor power latch assembly for a motor vehicle closure system configured to provide a power cinching feature and a power release feature. The power cinching feature is configured to retain the ratchet in a cinched striker capture position with the pawl disengaged from the ratchet. The power release feature is configured to move the ratchet from its cinched striker capture position to a cinch release striker capture position for unloading the seals prior to release of the ratchet to its striker release position.

Abstract: A vehicle door handle is provided that includes a handle body having inner and outer sides, keypad contacts on the outer side, and a plurality of proximity sensors disposed on the handle body to generate sense activation fields extending on the inner and outer sides. The vehicle door handle also includes a controller processing signals generated by the sensors to determine a handle pull on the inner side and a keypad input on the outer side.

Abstract: A pet crate door latch with a vertically-reciprocating slider on the door and fixed tabs attached to a crate side panel adjacent to the door opening and forming open slots parallel to the panel. The slots can be vertical, inwardly-facing horizontal, or outwardly-facing horizontal. The slider has perpendicular or parallel edges that operate as slot edges. The perpendicular edges are slot edges for vertical slots and the parallel edges are slot edges for horizontal slots. There is a tab space below each slot edge. To engage the latch, the slider is raised until the tabs are aligned with the associated tab spaces. As the door is closing, the tabs fit through the tab spaces. When the door is closed, the slider is lowered until halted by a latch stop wherein the slot edge is transversely within the slot.

Abstract: A latch having a housing and a latch mechanism located within an interior portion of the housing. The latch mechanism includes an arm, a pair of socket screws, a pair of torsion springs, each of which is connected rotatably to the arm and engages a corresponding one of the pair of socket screws, a bolt mechanism attached rotatably to the housing, and a link attached pivotally to the arm and attached to the bolt mechanism. The socket screws are utilized to adjust loads on the springs. The bolt mechanism is movable between a first position, in which the arm and the link are toggled with one another under the loads of the springs and the bolt mechanism is adapted to engage an external structure, and a second position, in which the link and the arm are untoggled with one another and the bolt mechanism is disengaged with the external structure.

Abstract: In at least one implementation, a nut for a hinge pin includes a head and a sidewall portion extending from the head to a free end. The sidewall portion includes at least one void that defines part of at least one sidewall section. The void extends radially through the sidewall portion and along at least part of the axial extent of the sidewall portion including the free end so that the free end of the sidewall portion is not circumferentially continuous.

Abstract: The flipping mechanism for rotating a flat element includes a linear guide having a rail and a slide moveable along the rail, a swivel arm having a first end connected adjacent to a first end of the rail in such a way that the swivel arm can be rotated about the first end between a first position, in which the swivel arm is parallel to the rail, and a second position, in which the swivel arm is perpendicular to the rail, and a rotation element having a first end connected in a rotatable manner to the slide of the linear guide, the rotation element being further connected to the swivel arm in a rotatable manner such that rotation of the rotation element about its first end causes rotation of the swivel arm about the first end.

Abstract: A closing hinge including a hinge body and a pivot reciprocally coupled to rotate around a first axis; a working chamber defining a second axis perpendicular to the first axis; a cam member unitary rotating with the pivot; a cam follower wheel sliding along the second axis between a position proximal to the rear wall of the working chamber and a distal position thereto; a thrust spring acting on the cam follower wheel. The cam member includes a first abutment element and a second abutment element respectively including a second curved portion and a third curved portion for selectively contacting the cam follower wheel in a respective single tangency point at a first and a second open positions and for contacting the wheel in two tangency points opposite with respect to the second axis at a closed position.

Abstract: A hydraulic circuit mechanically linked to a panel and agricultural harvesters including the same. The hydraulic circuit can be used to facilitate the transition of hydraulic states from a quick speed to a slow speed, when opening and closing the panel. The hydraulic circuit includes a restrictive orifice and a fluid stop valve that, when opened, diverts the path of pressurized fluid away from a hydraulic actuator during the actuator's extension. The diversion of pressurized fluid away from the hydraulic cylinder or through the restrictive orifice substantially reduces the speed at which the panel opens or closes.

Abstract: A door closer having a closer body 1 housing an electrical actuator 20 connected to one or more electrical connectors, such as plugs 24, each of which may be located in two or more different positions on the closer body to facilitate connection of the closer to an electrical circuit when the closer is mounted in different orientations, without providing a greater number of electrical connectors. The closer body may have a rotary shaft 7 connected to a door control arm 9, a first latch member 6 mounted relative to the closer body and a second latch member 29 mounted relative to the rotary shaft, the second latch member being arranged to engage with the first latch member to arrest rotation of the rotary shaft to latch the rotary shaft in a desired position. A mounting structure 8 connects the control arm and enables the angle between the control arm and the second latch member to be varied between 0 and at least 90 degrees.

Abstract: A door operator, for opening and closing a door with a motor, comprises a worm drive, a clutch coupled to the worm drive, and an output shaft coupled to the clutch. The worm drive comprises a worm and a worm gear. The door operator allows for the use of a low voltage motor to be used to open and close the door.

Abstract: A power swing door actuator for moving a passenger swing door relative to a body portion of a motor vehicle. The power swing door actuator includes a housing rigidly fixed to the swing door, a motor mounted to the housing, a connector link having a first end pivotably coupled to the vehicle body portion and a second end pivotably coupled to a drive nut of a spindle drive mechanism. A leadscrew of the spindle drive mechanism is rotatably driven by the motor for causing relative translational movement between the drive nut and the leadscrew which, in turn, results in pivoting movement of the connector link while the vehicle door swings between open and closed positions in response to selective actuation of the motor.

Abstract: An opening-closing body is operated toward an end position of the movable range, a section where the motor application voltage is set to a fixed value defines a first section. A section set between the first section and the end position defines a second section. The controller is configured to execute speed reduction control and stop control in the second section. At a point in time when the rotation speed of the motor body becomes less than or equal to a second threshold value, in the first section or the second section, the controller sets the motor application voltage that is applied from the point in time until the opening-closing body reaches the end position and the stop control is executed to a voltage value that is greater than or equal to the motor application voltage applied at the point in time.

Abstract: A door opening and closing device includes a motor that outputs driving force causing a back door of a vehicle to be opened or closed, and a controller that controls the motor. The controller executes automatic opening and closing control for automatically opening or closing the back door by the motor, and if the controller detects a stop command causing the back door to be stopped when the automatic opening and closing control is being executed, the controller decreases a target velocity of the back door at a predetermined deceleration ?1 until the back door stops.