Abstract: A latch assembly for housing cover is provided. Latch assembly has switch, latch, elastic clamp, and pushbutton. Switch is disposed on first side of cover. Switch is slidable in first direction to unlocked position for unlocking latch assembly and slidable in second direction to locked position for locking latch assembly. Latch has projection for engaging and disengaging with latch slot in housing for releasably latching cover to housing. Elastic clamp has detent portion for releasable engagement with notch in second side of cover. Latch and elastic clamp are disposed on second side of cover opposite switch and coupled to switch. Pushbutton extends through aligned openings in switch, latch, and portion of elastic clamp. Latch assembly is unlocked by depressing pushbutton to impinge on elastic clamp portion, thereby disengaging detent portion from notch and by simultaneously moving the switch in the first direction.

Abstract: A lockcase is mountable upon a surface of a doorway jamb which is selectively closable by a barn door. The lockcase includes a bolt which translates or otherwise moves relative to the lockcase to selectively engage a strike in the barn door. The bolt is actuated by movement of a handle on a lever mounted to the lockcase. In one embodiment, the lever rotates to cause a shuttle to translate and with the bolt mounted to the shuttle. Detents on the shuttle tend to keep the bolt in either a retracted or a deployed position relative to the lockcase and the strike.

Abstract: A screw-driven control system includes a driving mechanism fixed in a cross beam, a guide locking piece and a limiting mechanism.

Abstract: An embodiment of the invention includes an illuminating apparatus that is hung on a door knob. The purpose of the invention is to assist the discovery of the location in of the door knob in reduced lighting conditions.

Abstract: A rekeyable lock includes a cylinder, a plug and a blocker. The cylinder includes a main body, an accommodation hole and a through hole penetrating through the main body and communicating with the accommodation hole. The plug is rotatably disposed in the accommodation hole. The blocker is movably disposed in the accommodation hole and includes a block portion and a position portion connecting with each other. The block portion is located between the main body and the plug. The position portion protrudes outside the accommodation hole via the through hole and positioned on a steady portion of the main body. The bottom pins can be removed from or blocked in the plug by the blocker for key replacement, and the position of the block portion can be easily adjusted by the position portion protruding outside the accommodation hole for rapidly replacing the bottom pins.

Abstract: A keyless locking system for a door having an existing rotatable deadbolt. The keyless locking system has a housing, a drive train sub-assembly disposed within the housing, the drive train sub-assembly having a motor, and a power-transfer sub-assembly disposed within the housing, the power transfer sub-assembly having an actuator made of an elastomeric material and a C-channel shaped element configured to for positioning over the existing rotatable deadbolt when the housing is coupled to the door. The motor is operatively connected to the actuator to rotate the actuator and the actuator is operatively connected to the C-channel shaped element to rotate the C-channel shaped element. Rotational motive force of the motor is transferred from the actuator to the C-channel shaped element.

Abstract: An electronic keeper includes a housing defining a battery chamber and an actuator chamber. An actuator is at least partially disposed within the actuator chamber. The actuator includes a strike and a magnet, and is pivotable between a first position and a second position relative to the housing. The actuator is also biased towards the first position. The electronic keeper also includes a senor disposed within the battery chamber. When a locking element is in contact with the strike, the actuator pivots from the first position towards the second position so that the magnet moves relative to the sensor.

Abstract: An electronic cabinet lock comprises a lock body base (101) and a handle (201), one end of the handle is movably connected with the lock body base, and the other end is attached with an unlocking mechanism and a engaging board (204), a self-holding electromagnet is attached on the lock body base, the self-holding electromagnet comprises an electromagnetic coil (301), a retractable body (302), a first permanent magnet (303), and a biasing structure body (304), when the electromagnetic coil (301) is energized forwardly, the retractable body (302) can be driven to perform a retracting operation, when the electromagnetic coil (301) is energized reversely, the retractable body (302) can be driven to perform an extending operation, a mutual snap-fit between the retractable body (302) and the engaging board (204) is realized and released by relative movement of the retractable body (302) and the engaging board (204) in the retractable direction and the permanent magnet (303) is mounted on an outer side of the hole f

Abstract: An exit device having a dogging mechanism assembly for providing a visual indication of the state or position of at least certain components of the exit device, such as, for example, a latch, drive rod, and/or a hook bracket. The dogging mechanism assembly includes a displaceable arm actuator mechanism that is coupled to the hook bracket, the hook bracket being adapted to lockingly engage the drive rod. The actuator arm mechanism is adapted to displace an indicator mechanism at least from a first indicator position to a second indicator position as the actuator arm mechanism is displaced to at least one of a first position and a second position. The indicator mechanism has one or more indicators that provide a visual indication of a state or position of a component of the exit device when the indicator mechanism is in at least one of a first and second indicator position.

Abstract: A vehicle lid lock device includes a locking member for locking a lid provided on a vehicle, a housing member in which an insertion hole is formed into which the locking member is inserted and which houses the locking member enabled to move backward and forward; and an annular seal member that is housed in a housing portion of the housing member and that seals a gap between an inner surface of the insertion hole of the housing member and an outer surface of the locking member. The seal member includes a main body including an inner peripheral surface with an inner diameter larger than an outer diameter of the locking member, and a lip portion that protrudes radially inward from the inner peripheral surface of the main body and that is in slide contact with the outer surface of the locking member.

Abstract: A latch system for vehicle doors includes a powered latch including a powered actuator that is configured to unlatch the powered latch. An interior unlatch input feature such as an unlatch switch can be actuated by a user to provide an unlatch request. The system may include a controller that is operably connected to the powered actuator of the powered latch. The controller is configured such that it does not unlatch the powered latch if a vehicle speed is greater than a predefined value unless the interior latch feature is actuated at least two times according to predefined criteria.

Abstract: A motor vehicle door latch, in particular a tailgate latch, which is equipped with a locking mechanism comprising a catch and a pawl. Furthermore, a triggering element working on the pawl is provided for which is set up at least to lift the pawl. Furthermore, a memory element, which at least guarantees an unimpeded opening movement of the catch when the pawl is lifted. The memory element maintains the pawl in its elevated position.

Abstract: A task of the invention is to provide a convenient latching system for a motor vehicle of compact construction, that can manage with a small number of components. In particular, it should enable to bolt and/or open the motor vehicle conveniently and quickly. To solve the task, a motor vehicle latching system is provided with an actuator and a drive for driving the actuator with a first acceleration and a second acceleration, whereby the actuator adjusts the latching system dependent on acceleration. If the drive accelerates the actuator sufficiently slow, the actuator moves the latching system into a first position. If the drive accelerates the actuator sufficiently quick, the actuator moves the latching system into a second position different from the first position. It is therefore adjusted by the drive dependent on the acceleration. Adjustment takes place quickly and especially conveniently without requiring an excessively large number of components.

Abstract: An automotive vehicle includes a closure arranged relative a closure frame to selectively cover an opening to the vehicle. The vehicle also includes an actuator configured to move the closure among a plurality of positions including open and closed positions, and a first sensor configured to detect motion of the closure among the plurality of positions. The vehicle additionally includes a latch assembly with an engaged state to retain the closure in the closed position and a disengaged state to permit the closure to move among the plurality of positions. A second sensor is configured to detect the engaged or disengaged state of the latch assembly. The vehicle further includes a controller which is configured to, in response to the first sensor detecting motion of the closure among the plurality of positions and the second sensor detecting the latch assembly in the engaged state, provide a diagnostic signal.

Abstract: A compact vehicle side door latch apparatus has a latch that is rotated from an unlatched position to a fully-latched position, a ratchet that engages the latch in order to prevent the latch from being rotated in a releasing direction, a door opening link that is moved in a door opening direction in order to allow the ratchet to be disengaged from the latch, a motor that moves the door opening link in the door opening direction by motor power, and a door key lever that moves the door opening link in the door opening direction by an operation of a key plate. The door key lever is connected to the door opening link with play, and the motor power is transmitted to the door opening link without passing through disconnecting means of the power transmission path.

Abstract: A closure system for a handleless door of a motor vehicle equipped with a power release latch assembly, a power opening presenter assembly, and an illumination assembly configured to illuminate a grasp area (virtual handle) of the handleless door upon the handleless door being moved to a partially-open position via the power opening presenter assembly.

Abstract: The invention relates to a device for opening (1) a door or flap on a motor vehicle (8), in particular a door handle for a motor vehicle (8), having a grip part (2), wherein the grip part (2) is accommodated so as to be movable on one side, a means for detection (2) of the movement of the grip part (2), and a means for limiting the movement (3) of the grip part (2), wherein the means for limiting the movement (3) of the grip part (2) is movable out of the engagement region of the grip part (2).

Abstract: A shipping container includes walls, one or more doors, a locking device and a security device. At least one door is movable between an open position and a closed position. The locking device is configured to secure the at least one door in its closed positioned. The locking device defines an opening and includes a first fastener and a second fastener. At least one of the fasteners is attached to the door. The security device is insertable through the opening of the locking device. The security device includes a first wing substantially covering the first fastener and a second wing substantially covering the second fastener to substantially prevent access to the first fastener and the second fastener when the security device is inserted through the opening of the locking device. Other example shipping containers, security devices, etc. are also disclosed.

Abstract: The invention relates to a latch for a door or flap of a motor vehicle with a locking mechanism comprising a catch (3), a primary pawl (1) for ratcheting with the catch (3) in a main ratchet position and a separate secondary pawl (2) for ratcheting with the catch (3) in a pre-ratchet position, whereby only in the case of overload can the secondary pawl (2) additionally ratchet to the primary pawl (1) with the catch (3) in the main ratchet position. The invention furthermore relates to a latch for a door or a flap of a motor vehicle with a locking mechanism comprising a catch (3) with a load arm (7) and a catching arm (8) a primary pawl (1) to ratchet with the load arm (7) of the catch (3) in a main ratchet position and a separate secondary pawl (2) to ratchet with the catching arm (8) of the catch (3) in a pre-ratchet position, whereby the catch (3), the primary pawl (1) and the secondary pawl (2) are arranged on the same plane. A reduction of the complexity, e.g.

Abstract: A method of installing a storm door is disclosed. The method includes the steps of: attaching a track to a door head; attaching one or more rollers to the track; and attaching the storm door to the one or more rollers. After the storm door is installed, the storm door can be slid along a length of the track between an open position and a closed position. While sliding the storm door between the open position and the closed position, the storm door remains generally parallel to the door head.

Abstract: The opening and closing mechanism for opening and closing bodies has a first opening and closing body, a second opening and closing body, a first support member, a second support member, a first and second guide member, wherein a first and a second guide member intermediate portion are disposed to have an overlapping region, in the overlapping region, one of the first guide member intermediate portion and the second guide member intermediate portion is arranged, with respect to the other of the first guide member intermediate portion and the second guide member intermediate portion, in a direction to which a load is applied, and each of the first to fourth connecting portions has a rolling element provided at a side so as to apply a load toward toe guide members.

Abstract: The disclosure relates to a drive arrangement of a flap arrangement of a vehicle, wherein the flap arrangement has a flap which can be displaced between an open position and a closed position, wherein the drive arrangement has two mechanical drive connections for the technical drive connection of the drive arrangement and a helical spring arrangement for producing a total resilient force between the two drive connections. It is proposed that the helical spring arrangement have at least one integral helical spring element, in particular a helical compression spring element, having a helical spring axis, that a displacement, in particular a closure displacement, of the flap be associated with a deflection of the helical spring element and that, in order to produce the curve progression of the total resilient force which has different curve gradients, the helical spring element has a progressive resilient behavior at least over a deflection portion.

Abstract: A door closer pivoted on a door at least includes a case and a piston. When the door is open, the door closer blocks a communicating hole of the case by an oil sealing ring of the piston to allow an oil filled in the door closer cannot flow through the communicating hole. As a result, the open door can be held in a predetermined position.

Abstract: A bidirectional damper includes a box body, a damping cylinder arranged in the box body, a spring assembly, and two sliding blocks. The damping cylinder and the spring assembly are parallelly arranged between two sliding blocks, and ends of the damping cylinder and the spring assembly pivots with corresponding sliding block. Sliding pins are arranged on sides of the two sliding blocks, and a first blocking portion and a second blocking portion arranged on lower ends of the two sliding blocks. Sliding grooves are arranged on sides of the box body and extends along two ends of the box body, and the sliding grooves are correspondingly matched with the sliding pins on the two sliding blocks. An end of the sliding grooves, near an end of the box body, is bent towards a top of the box body.

Abstract: A system that performs a method is disclosed. Image data from a first camera mounted on a vehicle is received, the vehicle including a first element configured to open into a first space external to the vehicle, and the image data indicative of motion of a first object during a first time period, the first object located outside of the first space. Whether the motion of the first object during the first time period indicates that the first object will interfere with operation of the first element during a second time period, after the first time period, is determined. In accordance with a determination that the motion of the first object indicates that the first object will interfere with the operation of the first element during the second time period, an action that avoids the interference is performed.

Abstract: A movable barrier opener system having a multiphase brushless DC motor in the drive assembly is provided. The multiphase brushless DC motor may impart motive force to a movable barrier in response to barrier movement instructions from the barrier operator controller to the drive assembly. The barrier operator controller of the movable barrier opener system is configured to detect a back EMF of at least one winding of the multiphase brushless DC motor and determines a position of the movable barrier and/or determines a torque of the multiphase brushless DC motor in response to the detected back EMF. A position sensor and a back EMF sensor module provides actual operating parameters to the controller.

Abstract: A vehicle door adjustment unit for a motor vehicle sliding door, having a deflection device for deflecting a rope for automatically opening and/or closing the motor vehicle sliding door. The vehicle door adjustment unit comprises the rope and a first deflection roller and a second deflection roller, in particular having a U-shaped or V-shaped rope receiving profile, wherein a first deflection axis of the first deflection roller and a second deflection axis of the second deflection roller are substantially oriented perpendicular to one another.

Abstract: A device for a motor-driven adjustment of a vehicle door, in particular comprising a traction mechanism configured to be mounted to a vehicle door and comprising a motor drive unit and at least one flexible traction member, the at least one flexible traction member being connected to a check arm to be fastened to a vehicle body structure and the motor drive unit, and the motor drive unit being configured to drive the at least one flexible traction member for pulling the check arm, by the at least one flexible traction member, along an adjustment path for adjusting the vehicle door relative to the body structure.

Abstract: A movable barrier opener system having a brushless DC motor is provided. The movable barrier opener system may have a power supply unit with a drive circuit power module and a storage bank. The storage bank may be chargeable by the drive circuit power module and may be connectable to the drive assembly to provide electrical power to the drive assembly to move the movable barrier. The drive circuit power module may be selectably turned on and off to improve efficiency of power consumption by turning off during periods of lowered demand.

Abstract: A method for opening and closing a door of a vehicle may include receiving a signal indicative of either opening or closing the vehicle door, determining whether the opening or closing will be performed by an operator or via a powered actuator based on the signal, and generating, if the opening or closing will be performed by the powered actuator, a first control signal indicative of a first position to which the door is to be moved. The method may further include controlling the powered actuator to cause the door to move from an original position to the first position.

Abstract: A method, system and device for controlling a door of a railway vehicle are provided. The method comprises: a door control instruction sent by a transponder is received when a railway vehicle draws into the station, wherein the door control instruction is used for determining a door of the railway vehicle at a platform side; and the railway vehicle is controlled to open the door of the railway vehicle at the platform side according to the door control instruction, thereby solving the technical problem that the door of a railway vehicle at the non-platform side may be opened by mistake by a driver due to human factors because the door of the railway vehicle at the platform side is manually opened when the railway vehicle stops.

Abstract: An access system for a structure includes a control box mounted within a controlled access space of the structure and operatively coupled to a door panel operator that opens and closes a door panel of the structure for access to the controlled access space. The control box is configured to detect a presence of a security device relative to the control box, determine a position of the security device relative to the structure, and determine an authorization of the security device. The access system also includes a user interface mounted in an uncontrolled access space of the structure and coupled in communication with the control box. Upon actuation of the user interface, the control box operates the door panel operator when the security device is positioned proximate the control box, located in the uncontrolled access space of the structure, and authorized to operate the door panel.

Abstract: An automated door system includes a first door control module configured to be mounted in a fixed position relative to a powered door and a second door control module configured to be carried by a user and configured to be in electronic communication with the first door control module to control at least one of an opening actuation and a closing actuation of the powered door. A method of controlling the powered door may include wirelessly electronically connecting a second door control module to a first door control module, determining a proximity of the second door control module to the first door control module, an automating the opening and closing of the powered door in response to a position of the second door control module relative to the first door control module.

Abstract: A gun safe assembly for securing a rifle includes a base that may positioned on a support surface. A platform is positioned on the base and a butt of a rifle is selectively positioned on the platform having the rifle being vertically oriented. A first shell extends upwardly from the base and the first shell partially surrounds the rifle when the rifle is positioned on the platform. A second shell provided and the second shell is removably coupled to the base. The second shell abuts the first shell to surround the rifle when the second shell is positioned on the base. In this way the rifle is inhibited from being removed from the platform.

Abstract: A double sliding-plug door system includes a fixed frame, a sliding-plug rail arranged in the fixed frame, a cross beam, a driving mechanism, a linkage mechanism, a guide locking piece and a limiting mechanism. The driving mechanism has a screw rod and a motor driven nut assembly having a transmission frame, a nut sleeved in the screw rod and a follow-up member fixed in the nut; the nut mounted in the transmission frame, which itself is connected with an active sleeve assembly; the screw rod drives the nut assembly to reciprocate axially along the screw rod.

Abstract: A gripping device is configured to hold an insulating glazing subassembly including a spacer frame and at least one central glass sheet received in an internal peripheral groove of the spacer frame. The gripping device includes, on the one hand, members for gripping the spacer frame and, on the other hand, members for gripping the central glass sheet so as to ensure an independent gripping of the spacer frame and of the central glass sheet while allowing a relative movement of one with respect to the other.

Abstract: An insulating glass unit (IGU) comprising at least a first glass plate, a second glass plate, a spacer and an edge element, wherein the spacer is fastened to the first glass plate by a first immediate tack and green strength structural adhesive seal, the edge element is fastened to the first glass plate by a second immediate tack and green strength structural adhesive seal, one of the spacer and the edge element is fastened to the second glass plate by a third immediate tack and green strength structural adhesive seal, and the other one of the spacer and the edge element being fastened to the second glass plate by a compressible adhesive seal.

Abstract: The present invention relate to a method to produce an insulating glass unit (IGU) comprising the following steps: Forming a first assembly by fastening to a first glass plate (3) an IGU spacer (1) and, apart from said IGU spacer (1), an edge element (2) comprising at least one through hole (10), said edge element (2) being fastened with the help of one of an immediate tack and green strength adhesive (5) or a compressible adhesive seal (8); Fastening by pressing a second glass plate (6) to said first assembly, said second glass plate (6) being fastened to the IGU spacer (1) and to the edge element (2), said edge element (2) being fastened thanks to the other one of an immediate tack and green strength adhesive (5) or a compressible adhesive seal (8); Injecting a structural sealant (9) into said at least one through hole (10) of said edge element (2) to fill up the space between the IGU spacer (1) and the edge element (2).

Abstract: The invention relates to a bowed panel (102) comprising a frame (104, 106, 108, 110) and at least one sheet (112, 114), wherein the frame comprises at least one arcuate frame member (104, 106) and the frame is arranged to define an arcuate surface and wherein the at least one sheet is secured to the frame. The invention extends to a bowed cabinet door, drawer front or cabinet panel and a method of making a bowed panel.

Abstract: The present invention relates to a frameless glass door or window arrangement comprising a static frame and a movably mounted or stationary casement, wherein the casement further comprises a multiple glazing and at least one drip groove provided on the glazing, and wherein that at least one drip groove is provided between the plan defined by the external surface of the external glass plate and the plan defined by the internal surface of the internal glass plate of the glazing.

Abstract: A support assembly suitable for supporting a tiltable window in a tilted condition, said tiltable window including a window frame, a latch for releasably securing the tiltable window in a vertical orientation in a main frame, and an actuator arranged to actuate the latch in response to a user moving the actuator. The support assembly includes: a first support member arranged to be mounted on a surface, such as a floor, to support the tiltable window in the tilted condition; and a first connector attached to the first support member. The first connector includes a frame that is arranged to at least partly envelope a window frame member and is arranged to be releasably attached to the window frame member prior to the tiltable window being tilted out of the plane of the main frame. A window system including the support assembly, and a method for supporting a tiltable window using the support assembly are also disclosed.

Abstract: A doorway and passage barrier having a plurality of freely rotating members engaged upon a mounting member positioned upon a top edge of a frame of a child or pet barrier. The rotating members positioned adjacent the top edge of the frame form a bi-rotational shield preventing stationary contact with the top edge of the frame, thereby preventing a child or pet from using the top edge of the frame as a hand grip or foot positioner to climb over the barrier.

Abstract: A pull-cord control device for a curtain without an operation cord includes a pull-cord (3), a base (1), and a pressing plate (2) rotatably mounted to the base through a rotation shaft (42). The base forms first friction shafts (11). The pressing plate forms second friction shafts (21) staggered with the first friction shafts. The pressing plate forms a fixing pole (41). A first end of the pull-cord is connected to a retractable-cord device (5), and a second end of the pull-cord extends between the first and second friction shafts, and is connected to a curtain body (6) after extending about the fixing pole. When the curtain body moves up and down, the pressing plate is rotated between a clamping position and a loose position. When the pressing plate is in the clamping portion, the second friction shafts actuate the pull-cord to wander between the first and second friction shafts.

Abstract: A mounting assembly for mounting an architectural-structure covering to an architectural structure, in particular a movable structure is disclosed. In use, the mounting assembly is used in combination with the architectural-structure covering so that the architectural-structure covering can be movable between a retracted position and an extended position. All the while, the mounting assembly constrains movement of the covering portion of the architectural-structure covering so that, for example, in use, when the mounting assembly is mounted to a movable structure, the covering is prevented from moving relative to (e.g., away from) the architectural structure when the movable structure is opened and closed.

Abstract: An idle end for a roller blind, the idle end comprising a housing that includes a roller tube engagement portion for securing said housing to an end of a roller tube, and a pin. The pin comprises a body portion slidably receivable within said housing and extending outwardly from an end of said housing and terminating at an end face, said body portion having a notch that is shaped to receive a tool to permit the tool to engage the body portion and force the pin to slide relative to the housing, and a mounting element extending from said end face, said mounting element releasably securable to an idle end bracket of the roller blind to secure the end of the roller tube to the idle end bracket.

Abstract: A hidden fastener screen installation system is disclosed which includes a plurality of screen frame extrusions cooperating to form an opening across which a screen is positioned, wherein each screen frame extrusion defines at least one mounting surface configured to receive a plurality of mechanical fasteners to retain the screen frame extrusion to a portion of a building structure, and wherein at least one mounting rib extends outwardly from the mounting surface. The system further includes a trim mold defining a channel configured to closely receive and retain the mounting rib, wherein the screen is received in the channel and is retained by cooperation between the trim mold and the mounting rib, and wherein a portion of the trim mold is configured to extend over the fasteners such that the fasteners are hidden upon installation of the trim mold on the screen frame.

Abstract: A motorized window treatment configure for automatically determining and reporting the tilt level of a motorized window treatment. The motorized window treatment comprises a window covering material, a motor configured for moving the window covering material from an opened position to a closed position, an accelerometer configured for measuring gravitational forces, and a controller configured for reporting the tilt level of the motorized window treatment. Particularly, the controller receives gravitational force measurements from the accelerometer, determines a tilt level of the motorized window treatment using the gravitational force measurements, compares the tilt level to a first threshold value, and issues an error signal when the tilt level exceeds the first threshold value.

Abstract: An universal automatic tensioning system, for roller blinds and awnings with side rails, comprising a crossbar (2) equipped with a spring pin (6) that can move along a side guide (3) that defines the rail for the shift of the awning (1), characterized in that it includes one or more fixed clip(s) (4) that can be hooked by the spring pin (6) causing the locking of the roller blind (1); a further movement of the awning's crossbar (2) will force the spring pin (6) engaging with a mobile flap (5) that works as a sort of “bridge” for the spring pin (6), causing the unlocking of the crossbar (2), so as to realize the setting for the automatic tensioning of the roller blind (1).

Abstract: A gate system includes a first fixed support structure having a plurality of fixed rails defining respective passageways and a gate that moves relative to the fixed support structure between an open position and a closed position. The gate includes a plurality of gate rails that slide within the respective passageways as the gate moves between the open position and the closed position. Furthermore, the gate includes one or more compressible sheets coupled to the plurality of gate rails, and the one or more compressible sheets are configured to move from a compressed position to an expanded position as the gate moves from the open position to the closed position.

Abstract: There is described a step comprising a single foot secured to the floor for supporting a hinge system and a board onto which a user can step. The foot has an inclination ? with respect to the floor, wherein the inclination ? is fixed and lies between 45° and 80°. The hinge system installed on the foot provides a hinge with respect to the foot. The board extending in a plane is fixedly secured to the hinge system and hinges between a stowed position and a working position. The board is substantially horizontal when in the working position, and inclined at the inclination ? when in the stowed position. The board is adjacent to surfaces of the foot and of the cap onto the hinge system, and does not define any acute angle with these adjacent surfaces. The board has a recess that, upon hinging, always conforms to the cap.