Abstract: Techniques are disclosed for remotely switching screw color or screw type feeding into a door assembly machine with an auto-hinge applicator. An apparatus having a turntable is supported on bearings and a framework. Each side of the turntable includes a screw hopper accessible via a rotary index. The screw hoppers receive a user input to make a screw selection. Upon receiving a selection, one of the hoppers indexes into position, allowing the correct screw to feed to the hinge applicator. Screw feed-hoses from screwdrivers on the hinge applicator are arranged to connect to a manifold below the screw hoppers. Screws drop from the hoppers into a manifold, at which point the screws are blown with compressed air through the feed-hoses to the screwdrivers on the hinge applicator. Screws can be reloaded into the screw hoppers when rotated in alignment with the hinge side of the door assembly machine.

Abstract: The present disclosure provides a carrying device comprising: a supporting platform; a plurality of supporting strips disposed along at least two edges of an upper surface of the supporting platform, and at least one of the supporting strips being capable of moving on the supporting platform; and a first moving assembly that includes a first guide rail, a second guide rail and a first sliding block capable of sliding on the first and second guide rails, and the first and second guide rails being disposed parallelly on the upper surface of the supporting platform. The plurality of supporting strips include a first supporting strip having a side wall connected to a side wall of the first sliding block, and the first moving assembly is configured to drive moving of the first supporting strip.

Abstract: An apparatus for installing and removing glass panels and methods of using the apparatus includes a base portion, a back support structure secured to the base portion, and a glass adjustment system moveably coupled to the back support structure. The glass adjustment system couples to the glass panels. The apparatus is used to install and remove glass panels from, for example, ice rink boards.

Abstract: A panel handling device, has a wheeled portion, having plural wheels at a bottom section thereof, and having a plurality of teeth along a section thereof, said teeth being at different heights relative to the wheeled portion, and a second handle portion, separable from the first wheeled portion, but selectively attachable there to, said handle portion having a handle at one end, and having a slot at the other end, into which slot a surface of the wheeled portion is received, and having a panel handling tray at said other end, the panel handling tray having a surface for holding a panel, and the second handle portion having a teeth holding portion, which holds a position between said first handle portion and said second handle portion by holding into the teeth.

Abstract: An auxiliary pane is attached to a window having an existing primary window pane using a plurality of mounting members, each formed of a first flange and a second flange joined perpendicularly to one another at an apex so as to be substantially L-shaped. The first flange of each mounting member is secured to an inner frame surface of the perimeter frame of the window using a curable adhesive material. A gauge having first and second gauge surfaces at a prescribed distance is used to align the second flanges of the mounting members into a common plane by abutting the first gauge surface against the primary window pane and adjusting each mounting member to abut the second flange thereof to the second gauge surface of the gauge before the curable adhesive material has cured. Once cured, the auxiliary pane is magnetically coupled to the second flanges of the mounting members.

Abstract: A fastener guide for accurate spacing and aligning of fastening means in light wood frame construction, comprising a vertical leg comprising a generally flat rigid material and including a plurality of through-holes spaced according to a calculated matrix for driving fasteners therethrough to secure a first structural member to a second structural member, and a flange attached to or integral with the vertical leg and positioned approximately at a right angle thereto. The fastener guide is placed against a face of the first structural member such that the vertical leg plurality of through-holes are positioned to allow for transfer of thrust, tension and shear forces to the second structural member oriented adjacent thereto at a building frame joint. Fasteners are driven through the plurality of through-holes into the second structural member to secure the first structural member to the second structural member.

Abstract: An automatic system for automatically mounting door hinges to upper and lower seats on pillars of a vehicle body conveyed by a conveying unit may include i) a first aligning unit automatically aligning a plurality of door hinges, ii) a first gripper disposed on one side of a mounting frame fixed to an arm of a first handling robot, and taking out the door hinges from the hinge box, iii) a second aligning unit loading the door hinges, and arranging the door hinges into position at a predetermined mounting angle, iv) a second gripper disposed on the other side of the mounting frame, and unloading the door hinges aligned by the second aligning unit, v) a mounting jig clamping and setting the door hinges into seats on the vehicle body, and vi) a bolt runner bolting the door hinges set in the seats on the vehicle body.

Abstract: A door hinge loading device for a vehicle includes a door hinge storage that is attached to an attachment frame, where one or more door hinges are loaded on the door hinge storage, a clamping unit that extracts the door hinges from the door hinge storage, and clamps the extracted door hinges while aligning bolts, and a moving unit that is provided at a position corresponding to the clamping unit to be connected to the clamping unit, and selectively moves the clamping unit toward the door hinge storages.

Abstract: An improved mounting device for mounting a bodyshell sliding door to a body-in-white of a motor vehicle during a painting operation comprises a body connection which can be mounted to the body-in-white and a door connection which can be mounted to the bodyshell sliding door. The body connection and the door connection are connected with each other by a multiple joint.

Abstract: A portable painting apparatus comprises a combination of a portable paint booth for holding an object to be painted, removable handles for moving objects coated with wet paint, an optional drying rack for wet painted objects, and accessory hangers adapted for suspending objects inside the portable paint booth or from the drying rack. The portable paint booth includes a support frame with a rotatable hub assembly for painting all sides of an object and a replaceable tent for providing a paint overspray and splatter barrier. The tent may optionally include exhaust ports for withdrawing paint vapor and airborne paint droplets from within the tent. The support frame, removable handles, and drying rack are adapted to hold painted objects coated with wet paint on all sides and edges without damaging the coating of wet paint.

Abstract: An exhaust system includes an exhaust fan having a frame within which fan blades and a motor are secured. The frame includes an upper sidewall, a bottom sidewall, a first lateral sidewall and a second lateral sidewall, defining an inlet opening and an outlet opening on opposite sides of the frame. A flexible exhaust boot is secured to the frame of the exhaust fan adjacent the outlet opening. The exhaust boot is a flexible piece of material having a substantially tubular configuration with a first end having an opening and a second end having an opening. A support assembly secures the exhaust fan and exhaust boot in position adjacent an opening. The support assembly includes a vertical bracket having a first end and a second end, and an outwardly extending support block is mounted at the first end of the vertical bracket. The support assembly also includes a horizontal bracket extending substantially perpendicular to the vertical bracket.

Abstract: In one exemplary embodiment, a low-profile clamping system generally includes first and second elongate supports engageable with an edge portion of a sheet material for supporting at least part of the sheet material against bending. A fastener can releasably couple the first and second elongate supports to the edge portion of the sheet material. The first and second elongate supports define a channel for receiving the edge portion of the sheet material into the channel when supporting the sheet material. In another exemplary embodiment, an apparatus for transporting a sheet material generally includes a frame, at least one wheel coupled to the frame for allowing rolling movement of the frame, and an adjustable vice coupled to the frame for securing a sheet material in the vice on the frame.

Abstract: A gripper device for laser welding and vision inspection is provided which includes a frame unit releasably mounted on a front end of an arm of a robot and a clamping unit mounted on the frame unit. Additionally, embodied in this single gripper device is a laser-vision exchange (first) module, a laser-vision sharing (second) module and a laser-vision target (third) module all embodied in a single gripper device to irradiate laser beam for welding a welding object and obtain a vision source of an inspection object.

Abstract: An assembly jig includes a first frame adjustably fastened to a vehicle body in the vicinity of a door opening, a second frame with supporting the door of the vehicle, and link arms between the first and second frames that are hinged to the first and second frames so as to form a deformable quadrilateral in association therewith. Hinges between the arms and the frames include at least one ball joint arranged between a carrier element secured to one of the frames or arms and a carried element secured to one of the arms or frames, carrying being relative to the effect of gravity, wherein at least one of the carrier and carried ball joint elements is secured to the corresponding arm or frame in such a manner that the position in three-dimensional space of the center of the ball joint is adjustable in three spatial directions.

Abstract: A gripper for a door of a vehicle is provided which may be applied to various types of vehicles. In particular, a gripper for a door of a vehicle as provided may include frames mounted to an end of an arm of a robot, moving units which are disposed on the frames and are configured for reciprocating toward a clamping point of a door panel, angle adjusting units disposed to an end of the moving unit and configured for reciprocating forward and backward with respect to the frame and adjustable according to an angle difference of the door panel, and clamping units which are disposed on each angle adjusting unit and configured for clamping the clamping points of the door panel.

Abstract: A device for maintaining a plurality of doors in an upright and spaced position for treatment is provided. The device comprises a body with a plurality of radially extending hinge plate connectors each for connecting to a respective hinge plate. Also provided is a kit for assembling the device and a method for maintaining a plurality of doors in an upright and spaced position for treatment.

Abstract: An apparatus for holding a door, the apparatus incorporating a base, a pair of support columns, each support column among the pair of support columns having upper and lower ends, each support column among the pair of support columns being fixedly attached to the base; and a cradle mounted between the support columns, the cradle being adapted for, upon downward and upward movements of the door between the support columns, alternatively compressing against and releasing the door; the cradle including at least a first wall and being adapted for, upon the door's downward and upward movements, alternatively moving the at least first wall toward and away from the door.

Abstract: Featured is a door gripper for a vehicle including a frame, upper clamping units and a lower clamping unit. The lower clamping unit including a rotary pad with a swivel ball in restricted surfaces of a clamper and a locator of a lower clamping unit to deal with an angle difference of restricted cross sections of the door. The lower clamping unit and upper clamping units being configured and arranged so as to be movable in the up-down direction and the width direction along a guide rail of the frame in order to deal with differences in height and width of the restricted cross section.

Abstract: A fabrication line that utilizes a jig pallet that is commonly used in processing equipment to efficiently finish and assemble semifinished products of plural shapes. The jig pallet includes a holding member D for holding a semifinished product W and an opening/closing device G1 for opening and closing the holding member D, and allows the semifinished product W to be mounted and dismounted by opening and closing the holding member D with the opening/closing device G1. The jig pallet is transported to processing equipment M1, M2, and M3 to allow the semifinished product to be processed in the fabrication line. An opening/closing driving device G2 that engages the opening/closing device G1 to open and close the holding member is provided along the fabrication line.

Abstract: A jig pallet for conveying a workpiece that is placed on it and has a portion to be worked. The jig pallet has a conveyance carriage (A) movable along a production line, a workpiece receiving member (B) provided on the conveyance carriage (A) and on which the workpiece is placed, a pressing mechanism (E) to be placed so as to face a peripheral section of a to-be-worked portion of the workpiece placed on the workpiece receiving member (B), and an opening/closing member (D) on which the pressing mechanism (E) is provided. When the opening/closing member (D) is closed, the pressing mechanism (E) presses a peripheral section of the to-be-worked portion of the workpiece from above, and when being opened, the pressing is released, enabling the opening/closing member (D) to be opened and closed, with one end of the conveyance carriage (A) functioning as the support point, and allowing the workpiece to be taken out.

Abstract: A positioning device for positioning an object includes a platform, a slide rail vertically extending from the platform, two standard units, and a retaining unit. The standard units are slidably mounted to the slide rail to abut against a first side of the object to cooperatively define a position reference plane for the object. The retaining unit includes a fixing block fixed to the high standard unit, a slide bar slidably mounted to the fixing block, a holding arm fixed to the slide bar to abut against a second side opposite to the first side of the object, and a spring to bias the slide bar to ensure that the holding arm abuts against the second side of the object.

Abstract: A painters stand comprising a pair of extensible supports for rotatably securing a workpiece therebetween. Each support is comprised of a stanchion having a collar mounted thereon with a plurality of divergent legs extending therefrom with the stanchion having an intermediate workpiece support approximate the top end and a receiver for a workpiece fastener that will be fastened to a workpiece end whereby the workpiece can be supported between the stanchions. Once mounted in the workpiece receiver a plurality of radially positioned apertures are provided within the workpiece fastener so that one can be selectively co-aligned with a workpiece receiver aperture for insertion of a pin to secure the workpiece while a desired operation is performed, such as sanding and or painting.

Abstract: An automatic clamping device is disclosed for holding planar workpieces such as: doors, windows, panels, plasterboard, etc. The planar workpiece is held in an upright position by clamping bars actuated by the weight of the workpiece. Automatic clamping is accomplished by placing the workpiece through a slot at the top of the clamping device and lowering it onto a flexible strap connected to movable bars which, under the weight of the workpiece, move laterally towards and clamp the workpiece. The workpiece is released by simply lifting it up through the slot and an elastic member will automatically return the bars to an open position.

Abstract: The device to hold a door for painting supports a door while leaving the outer faces of the door exposed for the application of paint. The device includes a base having a securement member mounted thereon. The securement member may be selectively positioned in the longitudinal direction with respect to the base. A vertical support is releasably received by the securement member and projects upwardly therefrom. An upper horizontal support is releasably mounted to the vertical support and projects forwardly therefrom. The upper horizontal support is user-adjustable in the vertical direction, and the forward portion is received by the lock-receiving opening formed in the door. The lower edge of the door is mounted on a lower horizontal support, which is releasably secured to a forward portion of the base and extends forwardly therefrom.

Abstract: According to one embodiment of the present invention, a system operable to transport an object, comprises a frame, a frame transport system, a securing system, an object lift system and a sideways drive system. The frame transport system moves the frame in a plurality of directions comprising a first direction. The securing system couples an object to the frame. The object lift system lifts the object, and comprises at least one pump and at least one cylinder. The sideways drive systems deactivate the frame transport system and moves the frame in a second direction perpendicular to the first direction.

Abstract: An electrode assembly for use in a plasma processing system that includes removable rails that are adjustable for reconfiguring the electrode to accommodate substrates of different widths. The electrode assembly includes an electrode having a plurality of first connecting members. Associated with the electrode is a plurality of rails that cooperate for supporting the substrates on the electrode. Each of the rails includes a plurality of second connecting members. Each of the second connecting members is connected detachably with one of the first connecting members for removably mounting the rails with the electrode.

Abstract: In order to correctly align a door in a doorway structure, this device has been contemplated. It will be comprised of several identically shaped members that extend from the top of the door jamb to another separate member that is secured to the floor. The use of dual members that extend from the door jamb to the floor aligns the door in one dimension in the doorway but in order to align the door from the side a separate side member will be used.

Abstract: The present invention relates to a clamping apparatus for securing a panel, particularly a door, to a stationary or mobile carriage.

Abstract: A device is disclosed for setting a door frame in position before adjacent walls are built and for maintaining the dimensions of the door frame during the building of the adjacent walls. The apparatus of the present invention generally includes two main components, specifically a first extension assembly and a second extension assembly. The first extension assembly and second extension assembly adjustably engage to provide a cost effective and efficient apparatus and method for setting a door frame in position before adjacent walls are built and for maintaining the dimensions of the door frame during the building of the adjacent walls. The apparatus is adjustable, lightweight, and easily portable by hand from worksite to worksite.

Abstract: An adjustable lumber stand system may include a pair of adjustable leg assemblies. Each leg assembly may comprise a first external tubular section into which a second internal section may longitudinally slidably adjust. A pair of base anchors configured to anchor the pair of adjustable leg assemblies may be coupled to lower ends of the first external tubular sections. A pair of adjustable support bracket assemblies may comprise a brace and a support arm configured to support lumber. The first end portions of the support arms and the braces may be coupled to one another and second end portions of the support arms and the braces may be coupled to different locations on the first external tubular sections. A pair of top anchors configured to anchor the pair of adjustable leg assemblies to a structure may be coupled to upper ends of the second internal section.

Abstract: An apparatus and methods of use thereof are provided for improved manufacturing of window and door frames. In particular, the present invention provides an apparatus that can improve efficiency and reduce manpower in manufacturing of window and door frames by being able to accommodate whole assembled window or door frames without manual assistance and by incorporating and utilizing multiple machining tools for machining of multiple surfaces of window and door frames. Correspondingly, the use of the apparatus of the present invention permits the practical use of an unconventional process for manufacturing window and door frames that can reduce wastage of materials.

Abstract: Portable work stations which permit a one-step, touch-free finishing of all surfaces of doors, shutters, window sashes, cabinet doors, garage doors, spindles, and other workpieces. There are also provided trim measuring and cutting, and hinge mortising and prep racks, a leg assembly, a drying rack, and a trim board work station. All of these devices are provided by kits of components.

Abstract: The invention concerns a method and a device (10) for closing wedge simulation to set gap dimensions between a movable flap (5; 5a, 5b) of a vehicle and the surrounding body (1) of the vehicle. The flap (5; 5a, 5b) is initially fitted and held in a roughly adjusted installation position in alignment with the body (1). The flap (5; 5a, 5b) is then finely adjusted such that predeterminable gap dimensions can be met with optimum precision. Finally, the flap (5; 5a, 5b) is movably fixed in the finely adjusted installation position on the body (1). To simplify the closing wedge simulation without losing accuracy for fine adjustment of the flap (5; 5a, 5b), the invention proposes to suction the flap (5; 5a, 5b) against a mechanical stop (15) for fine adjustment using a pneumatic suctioning device (16), wherein the mechanical stop (15) is fixed relative to the surrounding body (1) and is freely pivotable about a substantially vertical axis of rotation (13).

Abstract: The invention comprises a door attaching apparatus for positioning and aligning a door for attachment to a doorway. The apparatus has a mobile frame adapted to be moved upon a surface. The mobile frame has a first frame. The first frame is movably mounted to the mobile frame to move upward and downward and forward and rearward relative to the mobile frame with a door mounted thereon. A second frame is pivotably mounted to the mobile frame behind the first frame and is handle operated to move forward and rearward on the mobile frame and to engage the first frame to cause the first frame and door thereon to move forward and rearward with the second frame to align the door in a doorway in one direction for attachment of the door to the doorways. A handle operated cam mechanism is mounted between the first and second frames to cam the first frame and thereby the door upward and downward on the mobile frame align the door in another direction for its attachment to the doorway.

Abstract: A door lifting apparatus includes a frame and a lift mechanism. The lift mechanism includes a slide and a lever. The slide includes a plurality of holders and a plurality of glides, wherein the holders are operable to engage and support a door while the glides cooperate with rails provided upon the frame to guide the slide along the rails. Pivotal movement of the lever moves the slide vertically relative to the upright supports, thereby raising or lowering the door.

Abstract: A method of aligning and duplicating alignment includes welding a washer over a larger opening in a hinge once in an aligned position relative to a vehicle door. The door is mounted into an alignment fixture and the hinges are installed over threaded studs extending from the door. The washer is placed onto the threaded stud and tightened against the hinge, covering the larger opening in the hinge. The larger opening in the hinge allows movement of the hinge relative to the door for alignment. The washer defines an opening with a smaller opening sized to provide relatively little clearance for the threaded stud, and thereby maintain alignment between the door and hinge. The washer is permanently attached by a welding operation to allow duplication of door hinge alignment during reassembly.

Abstract: A separating device that includes a wedge that extends between first and second plates, with at least one of the plates being supported by a support device such as a bar. The support device supports the or each plate while the device is in use so that the plate(s) are substantially prevented from bending or twisting due to the forces applied to the plate(s).

Abstract: A method and apparatus for holding an article to be painted coated with a stand. In one embodiment the stand comprises (a) a first leg, (b) a second leg, (c) an upper connecting member attached to the first and second legs at an upper elevational position, (d) a base connecting the first and second legs at a lower elevational position, (e) at least part of the upper connecting member being insertable in a hardware opening of the article, and (f) the base extending on at least two sides of the article.

Abstract: An all-direction transport includes a triangular wheeled platform for stable movement over a surface such as a factory, business or gymnasium floor, pathway or roadway. A load support is pivotally attached to the wheeled platform, and can pivot from a horizontal position parallel to the platform to a vertical position perpendicular to the platform. An extensible brace extends from the platform to load support when in an operative position. A pin passes through one part of the brace, which allows the load support to pick up a load from vertical position, while preventing the load support from moving beyond a predetermined limit towards horizontal. The brace is additionally removably pinned on one end to either the platform in an operative position or to the load support in a storage position, to allow the transport to be folded relatively flat. The load support additionally may be extensible in either horizontal direction, vertical direction or both. Other alternative embodiments are also described.

Abstract: An apparatus to aid in the accurate installation of a frame by establishing a required gap and alignment is disclosed. The apparatus comprises a block of material with pre-determined dimensions related to the standard or custom dimensions of the frame and standard or custom dimensions of a subsequent stud and dry wall to be installed. The block of material has a slot running along the length of at least one side with the slot having a pre-determined depth and width corresponding to standard or custom dimensions of an outer lip of the frame to be installed for fitting the block of material onto the outer lip. A securing system for temporarily securing the block of material to the outer lip is also provided. The slot is offset from an edge of the block of material by a distance corresponding to the required gap and alignment to be established.

Abstract: A table having a two-part table top, wherein each part is independently pivotable, and a base which can double as a lift mechanism for raising and lowering the table top. The table top is useful for rotating heavy objects during manufacture to access the underside of the objects for installation of components. The table top can also be raised and lowered allowing installation of components without resort to a stepladder.

Abstract: A door painting rack holds one or more doors for finishing by a painter. A base member has a lower support pin and a stop while an extension extends upwardly from the base member. An extension arm extends outwardly in fixed fashion from the extension arm and has a spring-loaded upper support pin located thereon, the upper support pin facing and aligned with the lower support pin. A door is positioned between the two support pins. A portion of the base member, the extension arm, and the extension support may each be telescoping in appropriate fashion.

Abstract: The panel mover is designed for receiving, holding and moving a panel and comprises: first and second elongate arms each having an upper end and a lower end and each having a length of between approximately 2 feet and approximately 4 feet; panel support structure connected between the arms; a wheel mounted to each arm on a wheel shaft extending from an outer side of each arm at the lower end of each arm; and, inwardly facing engaging structure only at the upper end of each arm for engaging the side surface of a panel positioned between the anns, whereby, when, an elongate edge of a panel is placed on the panel support stricture, the weight of the panel will cause each elongate arm to rotate upwardly around one of the wheel shafts and pivot inwardly toward the panel to a panel engaging position where the engaging structure at the upper end of each arm engages the panel.

Abstract: In order to fit side doors precisely on a motor vehicle, this is performed mechanically by aligning an assembly frame on the side frame of the vehicle. This assembly frame has points for receiving supports in which the doors are held. These receiving points are configured such that they permit the alignment of the doors in directions X, Y and Z.

Abstract: A method and apparatus for holding an article to be painted coated with a stand. In one embodiment the stand comprises (a) a first leg, (b) a second leg, (c) an upper connecting member attached to the first and second legs at an upper elevational position, (d) a base connecting the first and second legs at a lower elevational position, (e) at least part of the upper connecting member being insertable in a hardware opening of the article, and (f) the base extending on at least two sides of the article.

Abstract: The invention comprises a door attaching apparatus for positioning and aligning a door for attachment to a doorway. The apparatus has a mobile frame adapted to be moved upon a surface. The mobile frame has a first frame. The first frame is movably mounted to the mobile frame to move upward and downward and forward and rearward relative to the mobile frame with a door mounted thereon. A second frame is pivotably mounted to the mobile frame behind the first frame and is handle operated to move forward and rearward on the mobile frame and to engage the first frame to cause the first frame and door thereon to move forward and rearward with the second frame to align the door in a doorway in one direction for attachment of the door to the doorways. A handle operated cam mechanism is mounted between the first and second frames to cam the first frame and thereby the door upward and downward on the mobile frame align the door in another direction for its attachment to the doorway .

Abstract: A carriage for the transport and installation of heavy doors and other construction panels includes a door-holding frame that is pivotally attached to a wheeled chassis. Independent drive mechanisms provide accurate control over the elevation, tilt, and roll of a door panel held by the frame, and effect a precisely controlled, lateral movement of the panel relative to the frame.

Abstract: A door dolly (11) has a side leg (17) rigidly attached to a bottom leg (15) and a wheel and axle assembly (21) attached to the side leg (17) near the bottom leg (15). A handle (19) attaches to the side leg (17) distal to the bottom leg (15). The handle (19) is configured to act as a support for the side leg (17) when the dolly (11) is positioned with the side leg (17) substantially level with the floor, so that the dolly (11) can also act as a stand for holding a door (13) placed on the dolly (11).

Abstract: A simple, compact, hands free device that allows a single operator to vertically lift and hold construction panels to a desired height for securing to a wall surface. Downward foot pressure on one end of a slotted lever arm causes a panel lifting surface on the other end of the lever arm to rise. This lever arm is supported by a base support which also supports a locking arm. Once the desired height is reached, the device locks the panel into position. The operator is then free to move about, adjust, and finally secure the panel. Once the panel is secured, the locking arm is released by simple forward pressure. With the aid of a foot strap, the device can then be transported to the next panel ready for lifting. This device eliminates the use of hands, bending, or stooping during the process of lifting construction panels.

Abstract: A door holding device is disclosed for wedging a door relative to a ceiling for preventing swinging or falling over of the door during painting thereof. The device includes a tubular member having a first and a second end. A biasing device having a first and a second extremity is disposed within the tubular member so that the first extremity of the biasing device abuts against the first end of the tubular member. A piston having a first and a second termination is slidably disposed within the tubular member so that the first termination of the piston abuts against the second extremity of the biasing device such that the piston is urged by the biasing device axially away from the first end of the tubular member. A door engaging fastener is rigidly secured to the first end of the tubular member such that in use of the device, the door engaging fastener is disposed between the door and the first end of the tubular member.