Abstract: A pivotable safety gate having a pair of spaced apart parallel support frames which each have a distal end and a proximal end. The frames each have a support stanchion which is disposed adjacent the proximal end of the frame. The stanchions support a pivotable pair of gates. When one gate is down, the other gate is up. This gate assembly is utilizable at mezzanine floors where security and safety at edges of those floors are important. The gates prevent accidents and improper entry into areas which should be off limits to passage.

Abstract: A high impact resistant rotationally molded door and process for molding the door is disclosed in which a hinge member is integrally molded to the door along one edge only. This hinge member forms to the hollow door edge without door warpage during curing and shrinking of rotationally molded plastic door body. Door warpage is avoided by delaying full integral attachment of the hinge member to the door until curing of the injected foam interior which both bonds to the interior of the door and the hinge member. An improved seal and hinge seal is disclosed together with a placed window construction that can include both placement and shaping to meet the special order needs.

Abstract: The present disclosure concerns a pivotable motor-vehicle body-window of which the pane or window is pivotable about an essentially vertical pivot axis located at the leading edge of the pane. Clamps mounted on the pane periphery grip both sides of the pane by means of an adhesive. Flexible bent segments are affixed to the clamps and are used to fasten the clamps to the body. A frame made of PVC or other materials such as elastomers is injection-molded around the clamp and the leading edge of the pane.

Abstract: Door or window mountings with a first mounting member (2) having a pivot pin (1), said first mounting member being formed as an insert member being fixable within a U-shaped rail (5), or a recess etc.; and with a second mounting member (4), which is formed as a bearing bushing (3) with a fixing panel (8) on the side pointing in the direction of the pivot pin (1) and accommodating this pivot pin (1), wherein the pivot pin (1) is slideable in axial direction within a receiving bore in the insert member and the insert member comprises a lateral elongated hole (10) along the pivot pin (1), a fixing screw (11) extending through said elongated hole being screwed therethrough into the pivot pin (1) which is fixable with regard to the insert member by means of said fixing screw. The insert member comprises a slideway (6) being fixable with regard to the U-shaped rail (5) etc.

Abstract: An equipment cabinet employs a rack-mountable equipment enclosure surrounded by a base, a cap, and front and rear covers. Each cover consists of a bezel and a door reversibly mounted thereon via removable hinge pins. The bezels have sidewalls that rest against ledges on the edges of the enclosure to receive support therefrom. The door has a centrally-located latch, the latch having a pawl with an eccentric catch portion that engages a latch opening on a ledge extending from the bezel. The pawl also has a tab that rests between the ends of an arcuate raised portion on the rear of the door to limit the rotational travel of the pawl.

Abstract: A glass door and hinging mechanism where a glass panel may have a frame disposed entirely outside of the panel surface and perimeter of the panel which is held to the panel edge by a zone of bonding material, the glass door frame being provided with mounting members for receipt in hinging mechanism assemblies which are positioned above and below a doorway.

Abstract: The invention is a shock mount for a pivoted door on mobile food service equipment or a rolling cart. The shock mount is preferably a sliding block which is spring biased to a normal position. In case of a shock or jolt, the block slides to dissipate the energy resulting from the shock or jolt. A door is pivotally mounted on the sliding block. Detents hold the door in either a closed position or a supported open position. The pivot mount enables the door to move over the detent, while holding the door in either a closed or a supported open position.

Abstract: The invention relates to a door having at least one wing which can be swivelled about a lower hinge axis of a bearing device of a lower door rail, and about an upper hinge axis of a bearing device of an upper door rail relative to a door closer disposed within an upper tubular door frame. The upper hinge axis is defined by an adjustable first hinge part which is disposed on the outside of an upper wing frame section and which is capable of swivelling in a limited fashion about an essentially vertical alignment axis, and by a second hinge part which is essentially horizontally displaceable 1) in a limited fashion on the first hinge part and 2) essentially parallel to the plane of the wing. The first and second hinge parts are capable of being fixed in place.

Abstract: A floor door lock for restricting movement of a pivotal or sliding door relative to a floor, which inserts a lock pin into a pin-receiving opening in the floor. The door carriers an adapter fixed to its bottom side, the adapter having a chamber (42) therein, a pivotal arm (44) pivotally connected to the housing within the chamber, the lock pin connected to the bottom of the pivotal arm, and blocking means (46) for bearing against the arm (44) to retain the lock pin in the door-locking position in the receiving opening in the floor. The adapter arrangement also allows the door to be converted from a sliding door to a pivotal door, and vice versa.

Abstract: A doorway system, comprising a novel mechanism for controlling tall glass doors and making their installation and repair much easier, and a header that can be used with standard size or tall glass doors, is disclosed. The mechanism features circular bearings, a specially-designed bottom spindle and an upper, adjustable, pivotable housing. The header houses, among other parts, the adjustable housing and allows pre-cut, modular parts to be assembled at the building site.

Abstract: An improved bottom offset door pivot is disclosed which comprises an elongated threshold and a door pivot body. The threshold has a keyway formed therein in a direction generally parallel to the axis of elongation of the threshold. The door pivot body has a pivot spindle projecting upwardly therefrom for pivotably mounting a lower portion of a door to the pivot body. The pivot body further has a hook formed thereon configured to mechanically hook into the keyway in the threshold. A flange formed on the lower surface of the pivot body engages a groove formed in the upper surface of the threshold. The flange is disposed relative to the pivot spindle such that when the flange engages the keyway, the pivot spindle is properly offset with respect to the threshold. In the disclosed embodiment, when the lateral edge of the pivot body abuts the vertical door jamb, the pivot spindle is properly offset with respect to the doorjamb.

Abstract: A door has a frame mounted therearound for connecting with an engaging member mounted adjacent to an opening in a wall. The frame has a guiding channel and a connecting member installed in the guiding channel for connecting with the engaging member. A slide piece is slidably provided in the guiding channel and screws are introduced into the connecting member for interconnecting the connecting member and the slide piece, and thus immobilizing the slide piece, so that the slide piece permits adjustment of the location of the connecting member relative to the channel.

Abstract: A wall panelling for altering the acoustic properties of a wall, comprising wall elements adapted to have their orientation altered with respect to the wall. The wall panelling comprises a plurality of hinged frames mounted on the wall panelling or the wall itself and adapted to be swung away from the wall panelling or wall, respectively. The frames contain wall elements mounted therein for rotation by 180.degree. with respect to the associated frame. The front and rear faces of the wall elements have different acoustic absorption or reflection properties.

Abstract: A door hinge assembly includes a frame and a door with top and bottom hinge pivot assemblies. The top hinge pivot assembly includes a plate fixed to the frame and thereabove a parallel vertically movable plate. The upper plate includes a downwardly projecting hinge pin which projects through a clearance hole in the fixed plate. The fixed plate also includes an upwardly extending guide pin which extends through a clearance hole in the upper plate. A screw extends through the fixed plate and is threaded into the upper plate. When the screw is loosened the upper plate and thus the hinge pin may be pushed up, or permitted to drop into place. By tightening the screw the hinge pin is locked in its extended position and the screw head is flush with the bottom of the fixed plate. The bottom hinge pivot assembly includes an L-shape bracket with the vertical leg secured to the frame and the horizontal leg beneath the door.

Abstract: A sliding or swinging wardrobe door is sturdy and attractive and is quickly and easily assembled from a minimal number of inexpensive, lightweight and standardized components. The stiles and rails of the door frame have identical profiles and are cut as needed from a continuous length of inexpensive and lightweight aluminum channel stock. The stock is formed with a longitudinally continuous rear structure flange which improves appearance, adds strength and rigidity, and provides a site for mounting flush or recessed rollers. A longitudinally continuous internal screw race is used to add extensions onto the stock and to join the stiles and rails at mitered corners without the use of separate connecting brackets. A solid internal corner block provides a site for mounting door hinges. The block is two-sided to permit left-hand or right-hand use and is attached to the frame without the use of screws or brackets.

Abstract: A refrigerator is formed with a freezer compartment beneath a cold storage compartment for the purpose of adopting a single evaporator for two temperature compartment by disposing an evaporator between two compartments, further for operating a freezer compartment with a natural convection and a cold storage compartment with a forced circulation. Therefore a door of a freezer compartment is opened downwardly for the requirement of above facilities and a automatic ice making device which is settled on the shelf of an evaporator drops the ices into the ice pocket fixed to the door back during the door is closed. A door handle of ".andgate." shaped in section is adopted for use with downward opening door of a freezer compartment.

Abstract: A tilt-in/tilt-out window assembly with improved weather seal gasket includes a pivot bar having a particular cross-section and being integral with the lower frame member of the window sash. The pivot bar is adapted to be received in an aperture of a rotatable disk for pivotal movement within an adjacently opposing shoe integral with a channel formed in an adjacent jamb of the window assembly. A weather seal gasket, positioned on and entirely surrounding the pivot bar between the shoe of the jamb and the sash, includes a centrally located aperture therethrough having a configuration shaped to that of the pivot bar cross-section and a diameter or width at least equal to width of the channel opposing formed in the jamb. The gasket is adapted to seal the junction between the pivot bar and the shoe, thereby preventing the "chimney effect" and thereby improving insulation.

Abstract: A pneumatically actuated dumping bin for a cargo bed of a vehicle includes a floor, a left side wall, a right side wall and a rear wall. The pneumatic piston and cylinder is pivotably connected only to the bin at the rear wall portion with the cylinder being substantially vertical when the bin is horizontal. Compressed air selectively actuates the piston and cylinder to raise the bin at the rear wall portion when the bin substantially overhangs a rear end of the vehicle.

Abstract: In combination a shower stall structure for bathtubs or shower basins having a top and bottom comprising at least one opening extending from top to bottom defined by a multiplicity of stiles each stile extending in both a horizontal and vertical direction abutting an adjacent wall or stile, wherein at least one opening is closed by more than one closure member spanning across the at least one opening, having pivot mechanisms carried by both the multiplicity of stiles and the more than one closure member at the peripheral extremities thereof wherein the pivot mechanisms are adjustable in position along the respective peripheral edges of at least one of the multiplicity of stiles and the more than one closure member, allowing for dimensional variation of such as the at least one opening with respect to the dimensions of the corner in which the shower stall is installed.

Abstract: A method of reinforcing a structural assembly having an elongated panel with spaced front and rear thin metal walls. One of the panel walls is lanced to form a tang transverse to the elongated panel and attached at one end to the wall and having its opposite end free. One of the panel walls is also lanced to form a resilient tang spaced from the transverse tang and longitudinal to the elongated panel which tang is attached at one end to the wall and its opposite end is free. Both tangs are bent away from their respective walls. A reinforcing member is formed having a length slightly less than the distance between the spaced tangs and a thickness slightly less than the distance between the front and rear walls of the panel.

Abstract: A hinge for mounting a substantially planar faced door in a cabinet flush with the cabinet frame. The hinges are substantially invisible when viewed from the front and sides of the cabinet. The top hinge has a door plate member connected to the top edge of the door and a base plate member connected to the bottom face of the top base of the cabinet. The two hinge members are connected by a pivot pin. The hinge assembly is located adjacent the front face of the door and adjacent a side edge of the door. A similar hinge is attached to the bottom edge of the door.

Abstract: The service window is constructed from a universal extruded framing member which can be cut to any desired window dimensions. A bell crank linkage with hip actuator or either of the pair of handles can be used to swing both doors open simultaneously about their respective vertical hinges. The bell crank linkage is mechanically efficient and space saving, and includes an automatic spring return mechanism. The handles are located over center with respect to the hinges. A U-shaped channel-formed member with wedge-shaped insert slips over the handles to prevent the window from being opened. The innermost edges of the handles confront the wedge insert to prevent the handles from following the arc trajectories followed during opening. These trajectories pass closest as they cross the plane between vertical hinges, thus, the wedge insert provides a solid, stable locking condition which is not readily jarred loose by vibration or prying.

Abstract: A fastening element for glass in metal sections is provided in the form of a metal section having a conical groove along its length, a deformable clamping section fitting into the conical groove, a fastener for holding the clamping section tight in the conical groove whereby the outer end of a glass panel to be clamped may be inserted in said conical groove and clamped and an elastic member between the clamping section and outer end of the glass panel.

Abstract: A door fitting device capable of adjusting an axis of rotation and torque, which makes it possible to connect easily a torsion bar and a worm wheel and to engage the worm wheel with a worm. The door fitting device itself can be assembled easily and rapidly in parallel with fitting of the door to an upper and lower frame.

Abstract: A door for refrigerating and freezing chambers, comprising a door frame supporting one or more glass panes for exposing refrigerated or frozen goods in said chamber through the door. According to the invention, the door frame comprises a section (6) capable to support the glass (4) associated with the door (1) along only one vertical edge (7) of the glass (4), at which edge (7) the door (1) is intended to be hingedly suspended in a door case. An inner longitudinal cavity (10) is located along the entire length of the section (6), in which cavity (10) a torsion spring (11) extends substantially along the entire length of the section (6), which torsion spring (11) is capable to be locked at one end relative to the section (6) and at its other end relative to said door case.

Abstract: In a door bearing, a bearing arm having a bearing bore is fastened to a stationary construction, such as a door frame. A bearing pin which is axially displaceable in the door engages the bearing bore. In order to permit quick and simple release of the bearing in a minimum amount of space, an open recess is provided within the door. Through this open recess, the bearing pin can be reached manually or by means of a tool in order to withdraw it from the bearing bore.

Abstract: A glass door assembly is provided with at least one door, at least one sidelight, and a transom above the door, with a transom bar disposed beneath the glass transom, with the transom bar being supported from above the transom, such as from a ceiling, and preferably in such a way as to present an unsupported, floating appearance for the bar. The bar is carried by rods at ends of the transom, with the weight of the transom being supported by the transom bar, and with the rods preferably being unobtrusive and hidden from view. The transom bar is provided with a bearing arrangement for facilitating the pivoting of a door pivot therein. A number of adjustment features are provided, for the bearing of the door pivot, and for the transom support rod, both vertically and laterally. The transom bar also ties in with sidelights at its ends, for mutual support between the sidelight, the transom bar and the transom, all of which cooperate to provide rigidifying support for the door.

Abstract: A hinge device comprising a main body in the form of a channel member, a mount pin projecting outward from the web of the main body, and a pressing plate pivoted at its one end to the inner side of one side wall of the main body and retractable into the channel of the main body, the pressing plate being provided with a wedge formation on one side surface thereof opposed to said one side wall of the main body so as to gradually approach the other side wall of the main body as the pressing plate is retracted into the channel of the main body. A plate, such as the closure plate of a cabinet, can be loosely fitted into the channel of the main body with the pressing plate withdrawn therefrom and can be tightly held in the channel by the wedging effect produced when the pressing plate is retracted. The hinge device can be installed in place easily and yet holds the plate reliably.

Abstract: A refrigerator door of joint parts, an outer shell, an inner door lining and heat insulation. A top frame part and a bottom frame part have a bushing at their ends for a pivot pin or a hinge, the bushing being insertable in a sleeve on a side part of the frame. Thus, the refrigerator door is fabricated at a lower cost than previous similar constructions.

Abstract: A substantially planar closure for a cabinet compartment is disclosed having two resiliently retractable pivot hinges disposed in cantilivered fashion approximately co-axial with the rear edge of the door. This closure can be deployed in a housing opening having a cross-sectional area approximately equal to the planar dimension of the door. A front edge of the door includes an integral retractable latch which can lockingly engage a catch receiving recess disposed on the housing. The latch mechanism is co-axial with the forward edge of the door. A support means integrally formed with the undersurface of the door, provides the rear portion of the closure panel with additional support.

Abstract: An access door is constituted by an outer framework adapted to be fitted in a rough opening formed in a building ceiling, wall, or the like, an inner framework set in an opening in the outer framework, a cover plate secured to the inner framework so as to close an opening in the inner framework, a pair of bearings and axis for pivotally connecting the inner framework to the outer framework, and a locking means for locking the inner framework to the outer framework when the inner framework closes the opening in the outer framework. The bearings are projected on one framework of the opposite inner surfaces of the outer framework and the opposite outer surfaces of the inner framework, and have U-shaped bearing surfaces. The axis are projected on another framework of the opposite inner surfaces of the outer surfaces of the inner framework, and pivotally supported to the bearings, respectively.

Abstract: A fireplace or stove apparatus for efficiently providing heat to a structure without loss of interior air to the flue draft. A blower forces outside air through a conduit located in the exhaust flue into a grate located in a fireplace or stove. The fuel loading opening of the fireplace or stove is made substantially air-tightly sealed. An air opening in the grate provides air to be consumed by the fire. A second air opening in the grate is fluidly connected by means of a conduit to the structure to be heated.

Abstract: An improved adjustable mounting arrangement for mounting a glass door assembly on a door frame for a refrigerated display cabinet. The mounting arrangement includes upper and lower hinge assemblies for providing swinging movement of the door assembly relative to the door frame, with the hinge assembly accommodating adjustment of the hinge axis relative to the door frame for alignment of the door assembly in order to provide effective sealing and enhanced appearance of the display case. The hinge assemblies include upper and lower hinge brackets which are adapted to receive upper and lower hinge pins of the door assembly, the brackets being adapted to be attached to frame members of the door frame in different positions for effecting alignment of the door.

Abstract: A casement window is operable in a vent-egress mode and a wash mode. Hinge assemblies are mounted to the sash and hinge lock assemblies are engaged by the hinge assemblies. Both hinge and hinge lock assemblies are slidably mounted to channel-forming slides on the window frame. The lock assemblies releasably lock the sash in the vent-egress and wash modes.

Abstract: A frame particularly for use in a supplemental window which may be installed in an existing window case comprising sections of a linear extrusion forming a rigid body. The elements including a screw receiving channel, a channel adapted to hold sliding pins, a channel adapted to hold a pane and a channel adapted to fasten a compressible gasket to the element. Four such elements fastened together by means of screws form a rigid body surrounding the pane. The outside dimensions of this rigid body are slightly smaller than the inside dimensions of the window case in which it is adapted to be fitted. The rigid body is surrounded by a compressible gasket which is adapted to be compressed against the inside of the window case to form a seal therewith. The sliding pins are adapted to be slid into holes in the window case and to be locked in that position, thus providing a pivotal mounting for the supplemental window.

Abstract: A pivotal door for an entrance or passageway, and particularly for shower or bathtub enclosures, comprising a plurality of frame members, a panel mounted in said frame members, a channel provided in both top and bottom frame members, and a pair of pivot members each having one end adjustably retained within one of the channels, and the other end engaged in a socket provided in the shower enclosure frame, each pivot member being arranged to be affixed at any of a plurality of positions on the channel to enable the door to be utilized with enclosures having entrances of different widths.

Abstract: A door for closing a man-door opening in a mine stopping, the door having a pair of knife-edge hinges one at each of the two upper corners of the door for mounting the door to swing about a horizontal axis adjacent the top edge of the man-door opening between open and closed positions. Each hinge comprises a horizontally extending pivot pin and a vertically extending lug comprising a relatively thin metal plate member having a hole therein adapted to receive the pivot pin, whereby the area of engagement between the pivot pin and the lug is relatively small so that corrosion on the hinge at said area of engagement does not inhibit opening of the door.

Abstract: A self-aligning door hinge having a pin and sleeve bearing and a spherical bushing and socket bearing to minimize the effect of any misalignment of the hinges and simplify door assembly.

Abstract: A new and improved system for improving the heat insulating characteristics of an existing wall structure includes apparatus for providing an additional panel in spaced relation with a first or existing panel of an existing wall structure having a surround for supporting the edges of the panel. A sash including the additional panel is mounted in spaced apart relation with the first panel and includes peripheral elongated frame elements, each having a body with a transverse cross-section that is proportioned to extend generally normal to a face of the sash panel and providing a greatest resistance to longitudinal bending forces applied to the element acting in a direction generally normal to the face. Means is provided for structurally interconnecting the sash panel with the elongated elements of the sash frame and the sash is pivotally mounted in the surround outwardly of the first glazing panel.

Abstract: A window frame, especially for ventilation by setting at various angles a plurality of slats mounted on said frame is disclosed, the improvement consisting in that the control lever which acts upon the rod which gangs the slats for setting them at an angle together has the end pointing towards the interior of the frame in the form of a scalloped sector, the points of which engage, in turn, a notch formed on a brace which is removably fastened to the window frame upright. The mechanism is reliable and versatile since it permits that the slats may be set at various angles in a stable manner. Means are also provided for preventing slat rattle by properly shaping the individual frames of the slat carriers. Thermoplastics materials are widely used in the construction of the frame and accessories.

Abstract: A flush toilet which includes a concave bowl with a bottom drain port and a closure such as a pan or plate to close the drain port. When a pan is used, it can hold a quantity of water to form a gas seal. When a plate is used, a mechanical seal is employed. The closure is pivotable away from the drain port to permit the bowl to drain. Flushing means is provided which includes a nozzle directing a stream of flushing water tangentially into the bowl, air purging means to purge air from said water stream before a substantial amount of it discharges into the bowl, and a unique combined ball valve and vacuum breaker in the water supply system. The toilet also can include linkage which toggle-locks the closure in its closed position, a break-way lid, and when a mechanical seal is used, a gas-sealing overflow.

Abstract: A metal frame includes top, bottom and side members, each member having an angular cross section. A sheet metal door of unitary construction is formed with a tubular portion at its upper end and a pair of spaced panels depending therefrom. A pair of plastic bushings are loosely received in the opposite ends of the tubular portion, the bushings having flanges that determine the small amount of clearance between the door and the sides of the frame. A rod extends through the bushings and through the flanges of the angled side members to determine the small amount of clearance between the frame and the top and bottom of the door. In this way, the door is free to swing inwardly and outwardly, thereby permitting a dog to readily enter or leave the doghouse.

Abstract: A system is provided for pivotally mounting opposed ends of a door panel between a pair of frame or shelf members. The system utilizes a pair of panel-engaging members which have U-shaped cross sections and which receive the door panel ends. Each of the panel-engaging members has a pair of spaced leg portions interconnected by a base portion. A pair of elongate cylindrical projections extends from the base portions to define a pivot axis of the door panel. A pair of projection-receiving formations is provided on the frame members for journaling the projections. At least one of the projection-receiving formations takes the form of an adjustably positioned bearing structure. The panel-engaging members are preferably formed as elongate extrusions of plastics material. One of the panel-engaging members is provided with a handle formation for facilitating movement of the door panel.

Abstract: A plastic hinge comprising a leaf having a knuckle extending the length of the leaf, and partially open, with a boss therein positioned substantially medially of the ends of the knuckle, and an elongated pin therein terminating in a right angled arm, said pin having an annular groove therein arranged to cooperate with the detent in the knuckle.

Abstract: A moulded plastics pet door for relatively large animals comprising a rectangular frame for attachment to the sides of an aperture in a main door, a second U shaped frame engaging a frame on the rectangular frame and a flap engaging a frame on the second frame both the frame and the flap being pivoted on a rod extending transversely of the rectangular frame, shielded magnets being provided on the second frame and the flap to engage shielded keepers on the second frame and the flap. The flap is moulded with hollow reinforcing ribs and with slots in the rear side to receive bolts for locking the second frame and flap to the rectangular frame to prevent use of the pet door.

Abstract: A safety gate comprises a counterbalanced gate structure which consists of two side parts connected at one end by a fence part and which is pivotably mounted on a supporting structure by way of the said side parts to permit the gate structure to be swung between two end positions, and stop means pivotably mounted in relation to the supporting structure, preferably on the pivot for the gate structure, and automatically engageable with the supporting structure and by the side parts of the gate structure for determining the said end positions. Extensions telescopically adjustable longitudinally in relation to the side parts may be provided for adjustably counterbalancing the gate structure. The stop means advantageously comprises a stop plate pivotably mounted, between parts of the gate and supporting structures, on a pivot pin fixed in the said part of the latter.

Abstract: A hidden hinge construction for use in hingedly fastening one member to another member includes first and second parts which are adapted to be countersunk into the members. Each of the parts has appended thereto a plate which is respectively adapted to be fastened to the member. One of the hinge parts includes a projecting pin, and to the other hinge part includes an axial opening for rotatively receiving the pin.

Abstract: This pivot assembly for a swinging or folding door can be readily adjusted for door height or position of the door pivot axis relative to the door jamb. An L-shaped bracket is connected into the corner between the floor and door jamb. The bracket has a number of discontinuities parallel to the floor to prevent translation. A pivot is mounted on the lower corner of the door, preferably by a plastic sleeve. The sleeve is threaded on the inside and a threaded pin is mounted therein. The lower end of the pin has means directly engaging the jamb bracket to prevent rotation and translation of the pin. To adjust the door in most embodiments it is lifted so that the head of the pin is out of engagement with the teeth in the slot. The pin is rotated by hand to move it up or down in the threaded sleeve. The pivot axis of the pin is adjusted by moving the pin to a desired position on the bracket.

Abstract: A door assembly, and method of constructing same, including a door, and a wall panel having an opening sized to receive the door. The door is mounted in the opening of the wall panel on concealed, tamper-proof pivot hinges. The pivot hinges are held captive to the door via elongated fasteners during assembly, with the elongated fasteners subsequently functioning as concealed pivot pins about which the door is swingable.