Abstract: A pocket door frame includes a stud having a first section, a second section, and a third section. The first section is perpendicular to the second section, and the third section is perpendicular to the second section. The first section includes a first opening. The stud also includes a second opening located at least partially in the second section and at least partially in the third section. The second opening is at least partially aligned with the first opening so as to provide access to the first opening through the second opening.

Abstract: A centering device for centering a sliding door or window, including a rail; a moving member configured to be movable along the rail; and a plurality of centering rollers fixed to one of the rail and the moving member and spaced along a length thereof corresponding to a direction of movement of the door or window along the rail, the centering rollers abutting against an other of the rail and the moving member to laterally center the moving member with respect to the rail. The centering device can be implemented in a sill, header and jamb.

Abstract: A secure sliding closure having a modular frame and one or more sliding door is described. The modular frame defines at least one secure cavity and a portal and comprises a main frame and at least one door frame. The main frame comprises at least one frame upright spaced apart from at least one portal upright and a respective at least one top plate extending between the at least one frame upright and the at least one portal upright. The at least one door frame comprising a locking side upright spaced apart from a secure cavity upright and a door frame top plate. The modular frame defines at least one secure cavity and defines a portal. The one or more sliding door comprises a sliding leaf and a sliding leaf covering, the covering comprising one or more sliding door security panel.

Abstract: Multi-piece, flexible, sill pan assemblies and methods of installation are disclosed. Method of installation of a sill pan assembly for pocket door systems such as single- and double-door versions as well as multi-panel pocket doors. The sill pan assembly has a first flexible end dam member, a second flexible end dam member, a flexible outside corner member, and a flexible insert. Methods of installation of a sill pan assembly for a double-pocket door. The sill pan assembly having a first flexible end dam member, a second flexible end dam member, a first flexible outside corner member, a second flexible outside corner member, and a flexible insert.

Abstract: The present invention relates to a door guide frame of a detachable segment structure for sliding windows and doors, in which in order to improve heat insulating performance of the door guide frame, the door guide frame is divided into an outer body portion and an inner body portion and a thermal break is disposed therebetween, and even when a second pocket guide segment accommodated in the inner side surface of the inner body portion and a third pocket guide segment accommodated in the inner side surface of the outer body portion are separated from an upper cap region of an aluminum material and have a lower leg region formed of a thermal break material, a supporting means capable of providing a good supporting force for the lower leg region formed of such thermal break material is provided without affecting the heat insulating performance of the door guide frame.

Abstract: A window assembly for use in a vehicle including a window frame including a first end and a second end opposite the first end, and an opaque shade movable relative to the window frame, wherein the opaque shade includes a first tab formed at a bottom end of the opaque shade. A transparent shade is movable relative to the window frame, wherein the transparent shade includes a second tab formed at a bottom end of the transparent shade. The first tab and the second tab are configured for selective integration with each other to enable dependent movement of the opaque shade and the transparent shade with each other, and to enable independent movement of the opaque shade and the transparent shade relative to each other.

Abstract: The present disclosure describes a bulkhead assembly for an aircraft interior comprising a pocket door mechanism (48) for supporting and guiding the movement of a pocket door; and a structural member (50) to which the pocket door mechanism is attached. The structural member is attached to a structure of the aircraft and provides support for the pocket door relative to the aircraft structure independently of any decorative member (32, 34) covering the structural member.

Abstract: A sliding door arrangement comprising a sliding door (1) which is movably suspended from a rail system (23, 24) in order to be moved horizontally between two end positions wherein the door respectively opens and closes a door opening (10). The sliding door (11) is mounted in a housing (1) arranged for insertion in a wall (15) in a building. The housing is made of metal plate material and comprises two vertical long walls, two vertical short walls, one top wall, and one bottom wall. The long walls have door openings that at least partly are bordered by sealing elements. The door has a sealing element on its bottom side. The housing with the door installed is manufactured in a factory and shipped to the building site as a unit ready for installation in the wall.

Abstract: It is contemplated that the present invention provides a preassembled pocket door frame including a first vertical member, a second vertical member, an intermediary member having a vertically extending central slot, an upper member horizontally extending between the first vertical member and the second vertical member, and at least a pair of transverse braces, each transverse brace extending horizontally between the intermediary member and the second vertical member, each transverse brace having a moveable coupler operable such that each transverse brace is movable from a first, stowed position to a second, generally orthogonal position.

Abstract: There is provided a window/door system with a flat track having “”-shaped roller supports to provide a nice appearance and to improve air tightness and water tightness by reducing the number of grooves exposed on a window/door frame when a window/door is opened, by using the roller supports in a cross sectional shape of “” which is open at one side.

Abstract: In an aspect, a lifter plate is provided that is capable of a relatively strong connection to a vehicle window. The lifter plate includes a lifter plate body including a first side wall and a second side wall configured to receive a vehicle window therebetween, a window holding member positionable in a locking position to prevent the withdrawal of the vehicle window from between the first and second side walls, and a locking member positioned to prevent the movement of the window holding member out of the locking position in the event of a force urging the withdrawal of the vehicle window from between first and second side walls.

Abstract: A device (1) for attaching a glass pane (200) to a carrier (100) of a window regulator (51) uses a holder (11) mounted in a hole (201) of the glass pane (200). The holder (11) has a first part (12) on a face of the glass pane (200) and a second part (13) on another face of the glass pane (200). The first part (12) and said second part (13) are attached to one another by a hinge (17). The holder (11) has a coupler (16) for coupling and retaining the first part (12) and the second part (13) to one another. The attachment device (1) has a flexible retainer (31).

Abstract: A sliding door assembly for incorporation within a wall, the assembly comprising a sliding door panel, a top rail guide and a bottom rail guide operatively associated with respective top and bottom ends of the sliding door panel to guide the same within a pair of cooperating guide tracks provided within each of the top rail guides and bottom rail guides, the top and bottom rails guides are not vertically interconnected whereby the pairs of cooperating guide tracks extend in a separate plane from that of the wall so that when the sliding door panel is fully opened it is disposed behind the wall. The invention includes a guide track that is bifurcated to provide multiple sliding door panels.

Abstract: A window lift assembly for a motor vehicle, with a component on which a bearing site is provided for a redirecting element, in particular for a cable pulley or a deflecting piece, is provided. The redirecting element is arranged beside the component at the bearing site along a connecting axis pointing from the redirecting element to the component and the redirecting element redirects a driving force for adjusting a window pane of the motor vehicle. The redirecting element is mounted on the component along the connecting axis and the connecting axis forms a physical axis for mounting the redirecting element. The bearing site supports the redirecting element on an outer surface rimming the redirecting element at least in a direction vertical to the connecting axis, and for supporting the redirecting element the bearing site includes at least one portion protruding from the component.

Abstract: A compact, sliding door apparatus includes three vertically curved panels positioned in a doorway. A first of the panels is solid and is operatively connected to a slot above the doorway enabling the first panel to move side to side in the doorway. The second of the panels is hollow and receives a portion of the first panel. The second panel is also operatively connected to the slot above the doorway for side to side movement of the panel across the doorway. A third of the panels has a hollow interior and is stationary adjacent the doorway. The third panel hollow interior receives a portion of the second panel. The doorway is opened by moving the first panel into the second panel interior to open a portion of the doorway, and then moving the second panel into the third panel interior to fully open the doorway.

Abstract: An air passage open/close device includes a casing having an air passage, and a sliding door having a board member slidably located in the casing so as to open or close the air passage. The casing has a guide groove for guiding a movement of the board member. The guide groove has an upstream wall extending in a moving direction of the board member at an upstream side of the board member in an air flow direction, and a downstream wall opposing to the upstream wall at a downstream side of the board member in the air flow direction. The board member is configured to be elastically deformed when the board member is arranged in the casing.

Abstract: A window opening device for use in an automobile door. The device including a motor having a drive gear comprised of a tooth region and a head region. The diameter of the head region is greater than the diameter of the tooth region. A sector gear engages the tooth region and the head region overlaps the sector gear. A first lever arm has a drive end engaging the sector gear and a window end engaging a window. The motor is secured to a body plate configured for mounting to a door. The body plate includes an opening through which the drive gear passes to facilitate engagement with the sector gear.

Abstract: A carrier for connection of a window pane to a window lift of a motor vehicle comprises guiding claws spaced apart from each other in a longitudinal direction of a guide rail of the window lift for guiding the carrier on the guide rail. The carrier includes a window pane holder for connecting the window pane with the carrier and an adjusting device for adjusting the position and/or orientation of the window pane with respect to the guide rail. To ensure an exact bearing of the window pane on an associated sealing contour on a motor vehicle body with simple constructive means, little mounting effort and few components, at least one guiding claw is adjustable in a direction vertical to the longitudinal extension of the guide rail or in longitudinal extension of the guide rail and vertical to the longitudinal extension of the guide rail.

Abstract: The present invention relates to a method of operating a panel system including a moveable panel and an opening, the method characterised by the steps of aligning the panel with respect to the opening in an alignment plane so that the panel is capable of moving across the opening in the alignment plane, and positioning a panel release mechanism such that a user pushing on the panel along the alignment plane causes the panel release mechanism to release the panel from a fixed position within the panel system.

Abstract: A pocket door system with a constant rail system provides a pocket door adapted for sliding into and out of an enclosed wall pocket to enable or prevent egress through a framed door opening. The pocket door includes a roller mechanism mounted at a top surface and a slotted lower guide mechanism mounted at a bottom surface. A floor track with a vertically extending, flat, planar protruding plate element is mounted upon a floor surface is secluded within the enclosed wall pocket. The vertically extending, flat, planar protruding plate element is insertable into the corresponding vertically extending flat, planar slot of the guide mechanism. The roller mechanism of the pocket door system engages an upper track as the lower guide mechanism engages with the protruding element guide wherein the pocket door slides into and out of the enclosed wall pocket without wobbling and dislocating from the tracks during use.

Abstract: A window clip for connecting a window to a window lift includes a clip body having a generally U-shaped profile and a window lift connector attached to the clip body. The clip body includes a pair of generally opposed side walls connected at a closed bottom portion with an opening opposite therefrom, each opposed side wall having an inner face and having a single concave curvilinear surface on the inner face. An isolator is adapted to fit into a clip body. The isolator has a convex curvilinear portions adapted to fit and nest within the concave curvilinear surfaces on each inner face.

Abstract: In a first aspect, the invention is directed to a window regulator for a vehicle window on a sliding vehicle door. The window regulator includes a ratchet that is positionable in a first position and a second position and a pawl that is positionable in a ratchet release position and a ratchet locking position. The position of the ratchet determines the position of a door interlock member for controlling whether the vehicle door is fully openable or not. The window regulator includes a mechanism for separating the ratchet and pawl from each other prior to movement of at least one of the ratchet and pawl from one of its associated positions to the other of its associated positions. The mechanism preferably separates the ratchet and pawl from each other prior to movement of each of the ratchet and pawl from one of its associated positions to the other of its associated positions.

Abstract: Provided is a platform screen door device capable of reducing total weight of the whole device and securing sufficient strength and durability thereof. The platform screen door device includes a door case provided on a platform; and a sliding door moving in and out of the door case. At least one of the door case and the sliding door includes a frame formed by integrating horizontal door case frame members and vertical door case frame members disposed orthogonally relative to each other, or by integrating horizontal door frame members and vertical door case frame members disposed orthogonally relative to each other, through fastening members using bolts and fixing members using adhesive or the like, supplemental for joint strength of the fastening members using the bolts.

Abstract: A snap-in glass carrier, engageable with a window regulator for snap fitting a door glass having a glass retention hole to the carrier, comprises a carrier base, a regulator attachment extending from the carrier base, a glass retention portion and a finger. The glass retention portion extends from the base spaced from the window regulator portion to define a gap for the glass. The finger, cantilevered from the base, includes a vertical portion extending parallel to the support finger on the same side of the glass as the support finger, a retention tab extending from the vertical portion into the gap that engages the retention hole, a hinge point adjacent to the glass carrier base and located on the same side of the gap as the window regulator attachment, and a spring leg extending through the gap from the hinge point to the vertical portion.

Abstract: An exterior pocket door of simple design is provided that can be used for commercial and residential exterior building applications. The exterior pocket includes a door frame structure having a top head jamb coupled to a bottom sill plate by a left wall jamb and a right wall jamb. A first exterior wall panel and a second exterior wall panel are coupled to an outside face of the frame structure and a first interior wall panel and a second interior wall panel coupled to an inside face of the frame structure. A first sliding door unit and a second sliding door unit are mounted within the door frame structure to be moveable between an open position and a closed position. The first exterior wall panel and the first interior wall panel form a first pocket in which the first sliding door unit is located in the open position, and the second exterior wall panel and the second interior wall panel form a second pocket in which the second sliding door unit is located in the open position.

Abstract: A pocket door system with a constant rail system provides a pocket door adapted for sliding into and out of an enclosed wall pocket to enable or prevent egress through a framed door opening. The pocket door includes a roller mechanism mounted at a top surface and a slotted lower guide mechanism mounted at a bottom surface. A floor track with a vertically extending, flat, planar protruding plate element is mounted upon a floor surface is secluded within the enclosed wall pocket. The vertically extending, flat, planar protruding plate element is insertable into the corresponding vertically extending flat, planar slot of the guide mechanism. The roller mechanism of the pocket door system engages an upper track as the lower guide mechanism engages with the protruding element guide wherein the pocket door slides into and out of the enclosed wall pocket without wobbling and dislocating from the tracks during use.

Abstract: A motor vehicle door has a door body formed from a door inner part and a door outer panel fastened thereto. The door body has a shaft opening for a window shaft located inside the door body, and a shaft reinforcement fastened to the door inner part. The reinforcement extends below the shaft opening and supports the door outer panel via a downwardly bent flange of the door outer panel. A window seal for the shaft opening is received in a fastening groove formed by an upright longitudinal web of the shaft reinforcement and the downwardly bent flange.

Abstract: A pocket door mounting system allows a pocket door to be easily leveled or adjusted after installation in a door opening. The system is installed in a level position in the area of a structural header. At each end of the system is a standard bracket or brackets which attach to vertical framing members on either side of the door opening. At one end of the system is an adjustment assembly having a vertically oriented adjustment screw. Raising or lowering the adjustment screw adjusts the pitch of the system relative to the door opening.

Abstract: A snap-in glass carrier engageable with a window regulator assembly for snap fitting a movable door glass with a glass retention hole to the glass carrier is disclosed. The glass carrier may comprise a glass carrier base and a spring finger. The spring finger may extend in a cantilevered fashion from the base and include a barb spaced from the base and engaged with the retention hole. The spring finger may also include a spring finger neck adjacent to the base and connecting to the base at an attachment location, with the spring finger neck being tapered and having a curvature configured to align the attachment location directly under an edge of the glass when the glass is mounted to the glass carrier. The snap-in glass carrier may also include saber-toothed ribs under the barb and a support bridge for the spring finger.

Abstract: An air passage open/close device includes a casing having an air passage, and a sliding door having a board member slidably located in the casing so as to open or close the air passage. The casing has a guide groove for guiding a movement of the board member. The guide groove has an upstream wall extending in a moving direction of the board member at an upstream side of the board member in an air flow direction, and a downstream wall opposing to the upstream wall at a downstream side of the board member in the air flow direction. The board member is configured to be elastically deformed when the board member is arranged in the casing.

Abstract: There is disclosed a pocket door system. The pocket door system comprises a pocket door sized and shaped to fit into a pocket opening in a wall. Associated with the pocket door is a storage means which is sized and shaped to fit into the pocket opening in the pocket door. The pocket door system also comprises a means for sliding the pocket door and the associated storage means into and out of the pocket opening. A kit for installing a pocket door system is also disclosed.

Abstract: A glass fixing grommet fixes a glass with a hole to a mount and includes first and second supporting plates. The first supporting plate is attached on one surface of the glass and has a first cylinder portion with a bolt inserting hole for inserting a bolt therein. The second supporting plate is attached on the other surface of the glass to face the first supporting plate. The second supporting plate includes a second cylinder portion to be fitted with the first cylinder portion with a bolt exit, and a nut holding member situated adjacent to the bolt exit for holding a nut thereat. When the first and second supporting plates sandwich the glass, the bolt passes through the mount and the first and second supporting plates to engages the nut to fix the glass to the mount.

Abstract: A universal trim piece system for a refrigerator door having a decorative panel can be employed with either a front mounted door handle or a side mounted door handle. When employing the front mounted handle, the door is provided with a top trim piece, a bottom trim piece and first and second side trim pieces. When employing the side mounted handle, the door is provided with the top trim piece, the bottom trim piece and only the first side trim piece, with the side mounted handle replacing the second side trim piece. Interchanging the handles/decorative panels just requires loosening the top and bottom trim pieces, exchanging the handles and possibly the decorative panels, providing a second side trim piece or handle, and re-secure the top and bottom trim pieces.

Abstract: A spring mechanism for a trailer ramp door which is adapted to be completely received in an opening in a side member of a tubular rectangular trailer rear entrance frame and with its bottom end securely attached to the inner surface of a flange extending along a side of the frame of the trailer ramp door and its top end securely attached through the opening to the inner surface of the side member, and the flange completely encloses the spring when the trailer ramp door is closed.

Abstract: A room partition system for a room having a central connecting panel and hingeably attached, foldable lateral storage units. Each of the lateral storage units has a bottom-mounted wheel assembly, thereby allowing the partition system to be rolled to various locations within the room. The lateral storage units have a plurality of shelves and provide substantial storage volume for containment of various items of clothing and other accessories. The lateral storage units are attached by hinges to the central connecting panel, thereby allowing a user to fold the storage units partially or fully against the connecting panel. The partition system has an open position, wherein the storage units extend parallel to the connecting panel, and also a folded position, wherein each lateral storage unit is rotated upon its hinges to a position perpendicular to that of the connecting panel, thereby forming a partially enclosed area for use as an entertainment center, a study center, or a work center.

Abstract: The specification discloses a pocket door assembly having a notch or recess in a pocket portion of the frame that allows for use of a protruding handle, such as a doorknob, to be used on a door portion of the assembly. In a second aspect, the specification discloses a latch mechanism for use with pocket doors that may utilize rotary handles, such as standard doorknobs.

Abstract: A door lock system for an airplane is operative to alternately operate spaced doors to provide controllable entry into a restricted area located between the spaced doors.

Abstract: The section member slidingly receives outwardly a driving member extending through the rail provided with a clamp for holding the lower edge of the window pane. The section member of the rail comprises a longitudinal base portion and a longitudinal portion abutting said driving member having an essentially U-shaped symmetrical cross-section between which branches an extension of said driving member is fitted to avoid relative rotating movements. The base portion has a suitable thickness to bring the two free ends of the driving member in abutting relationship with the lower portion of said second longitudinal portion.

Abstract: An apparatus for sealing a vacuum chamber having a plurality of long cylinders for linearly moving first piston rods. The first piston rods connect with a frame elevator. The frame elevator has a second piston rod and guide stems parallel to the first piston rods. A lever, a transmitting rod and a connecting rod are synchronously moved, when the second piston rod is moved parallel to the guide stems by a short stroke cylinder. The transmitting rod is pivoted with a middle of the connecting rod. Direction-changing mechanisms are pivoted at the two ends of the connecting rod for horizontally moving a door to seal the vacuum chamber. The moving direction of the door pushed by the direction-changing mechanisms is perpendicular to the moving direction of the second piston rod so that the apparatus has a thin configuration.

Abstract: A dual rack and pinion system is provided for a window lift mechanism. The window lift mechanism includes improved window brackets for simple mounting to a window. A modular frame design is provided to improve assembly of the window lift mechanism into the door of a vehicle. An improved assembly method is provided for the dual rack and pinion system. The system is also provided with a smart motor and incorporates resilient shock absorbers in the dual rack and pinion gear train to allow more time for the smart motor to detect and react to an obstruction in the window.

Abstract: A window-lift device for motor vehicles includes a panel-connector, a drive-connector attached to a drive mechanism of the window-lift device for lifting and lowering a window pane, matching fixing pieces for fixing the panel-connector to the drive-connector, and an assembly piece. The assembly piece is mounted to the drive-connector and supports a first one of the fixing pieces in a pre-assembly position. The assembly piece and the drive-connector together provide a feeding opening for guiding the panel-connector to an aligning position in which the matching fixing pieces are to be engaged to fix the panel-connector to the drive-connector.

Abstract: A window regulator comprises a front guide rail installed in a front portion of a door and extending upward and downward; a rear guide rail installed in a rear portion of the door and extending upward and downward; a front carrier unit fixed to a lower front portion of the window pane and slidably engaged with the front guide rail through a first mechanism; and a rear carrier unit fixed to a lower rear portion of the window pane and slidably engaged with the rear guide rail through a second mechanism. The first mechanism is constructed to permit a pivotal movement of the front carrier unit about an imaginary axis that extends along the front guide rail. The second mechanism includes a channel construction possessed by the rear guide rail and a slider possessed by the rear carrier unit and slidably received in the channel construction. The construction has a generally C-shaped cross section with its open side facing in a direction of a thickness of the door.

Abstract: A window-regulating assembly selectively moves a window of a vehicle door between an open position and a closed position. The window-regulating assembly includes a rail that is fixedly secured to the vehicle door. The rail extends through a radius of curvature. A lift plate is slidably engaged with the rail. The lift plate is also secured to the window. The lift plate moves the window between the open and closed positions. A lead screw is secured to the rail. The lift plate travels along the lead screw to move the window between the open and closed positions. A drive motor is secured to lift plate. The drive motor receives electrical energy and converts the electrical energy into a selectively bidirectional rotational force to drive the lift plate over the lead screw. A pivot mount extends between the drive motor and the lift plate allowing the drive motor to move through the radius of curvature as the lift plate slides along the rail.

Abstract: An integrated glassrun and window regulator assembly is provided. Various lift assembly portions (screw drive, drive belt, flexible cable) can be used to selectively raise and lower a window glass. An integral glassrun extrusion provides a guiding function of the window glass as it proceeds between the raised and lowered positions, and also functions to seal against the external elements along the front, upper, and rear edges of the glass when in the window is in a closed or raised position. A substantial reduction in weight results from the integrated assembly, in addition to eliminating relays, electric switches, reducing electrical wire size, and reducing the cost of manufacture and assembly.

Abstract: A door lock system for an airplane is operative to alternately operate spaced doors to provide controllable entry into a restricted area located between the spaced doors.

Abstract: A follower for holding a window pane is adjustable by a motor vehicle window lifter. The follower is connectable to the window lifter and has at least one retaining arm which can be brought into engagement with the window pane and thereby extends at least in part along a window pane surface. The follower is designed so that in the event of the window pane being loaded with force (F) in the lifting direction (H) a torque is exerted on the retaining arm of the follower. The torque is exerted in the direction of the window pane surface to press the retaining arm toward the window pane and prevent the window pane from becoming disengaged and sliding out from the follower.

Abstract: A guide device for a window movable within a motor vehicle between an open position and a closed position for closing an opening in the motor vehicle. The device includes a first guide rail pivotally attached to the motor vehicle for pivotal motion in a plane parallel to a plane in which the window moves. The window includes a journal having a guide shoe for attachment to the first guide rail. The guide device further includes a second guide rail fixedly attached to the motor vehicle. The window further includes a slide element for attaching the window to the second guide rail. The guide device is particularly suited for use with a trapezoidal rear window of the motor vehicle.

Abstract: A carrier for connecting a window pane to a window lifter including retaining arms which are located to each side of the lower edge of the window pane. At least one of these retaining arms has a recess in which a window bolt can engage to connect the window pane to the carrier. At least the upper part of at least one retaining arm is resilient. One retaining arm has a retaining area formed as a horizontal oblong guide and the other retaining arm has a fixing area which is resiliently attached to the carrier for horizontally urging the window bolt as the bolt moves with respect to the carrier within the horizontal guide.

Abstract: A window regulator for a door that includes a portion that defines a helical path. The window regulator includes a drive assembly having an actuator coupled to a cable for moving a window along the helical path. A single guide having opposing channels extends longitudinally and defines a drive path, which is different from the helical path. A lift plate is movable along the guide for supporting the window, and the cable is connected to the lift plate for moving the lift plate along the guide. A slider, preferably two, is received in the opposing channels with a ball and socket connection between the lift plate and the slider. The ball and socket connection permits relative movement between the lift plate and the guide such that the window may travel in the helical path as the sliders move in the straight drive path.

Abstract: An automotive door is equipped with a window regulator for raising and lowering a window glass. The window regulator includes reconfigurable bracket assemblies that are mirror images of each other. Each bracket assembly includes a base plate that has a guide block for attaching the bracket assembly to a guide member of the automotive window regulator, and a clamp plate that is attached to the base plate in a first position with respect to the clamp plate or in a second position with respect to the clamp plate. The base plate is symmetrical with respect to an imaginary lateral centerline whereby a first bracket assembly may be configured by attaching the clamp plate to the base plate in the first position or a second bracket assembly may be produced by attaching the clamp plate to the base plate in the second position, the second clamp plate being a mirror image of the first bracket assembly.