Abstract: The disclosure provides a human laryngeal model for simulation of endoscopic guided injection laryngoplasty surgery and for an insertion of a syringe containing a fluid. The human laryngeal model includes a laryngeal body, a seat body, and a vocal cord. The seat body is mounted to the laryngeal body. The seat body has an accommodation space. The vocal cord includes a plate and at least one bag body. The plate is stacked on the seat body, the bag body is fixed to the plate and located in the accommodation space of the seat body, and the bag body has a storage space. The vocal cord is configured for the insertion of the syringe to allow the syringe to inject the fluid into the storage space of the bag body. In addition, the disclosure also provides a human head and neck model including the human laryngeal model.

Abstract: Systems and methods for setting correspondence between pieces of equipment, locations and elements of a lockout procedure checklist comprising a procedure checklist and marking tools. The procedure checklist is printed over a markable support and comprises elements printed thereon each comprising a unique graphical assemblage. Marking tools, provided at locations to perform securing operations on pieces of equipment, are adapted to generate markings on the support matching the graphical assemblages. The operator following each of the elements of the procedure uses the marking tools at the locations to generate markings on the support, and thereby completion of the procedure may be validated by comparing the markings generated on the support with the graphical assemblages thereon. Procedure allows to validate that operations are performed only on appropriate pieces of equipment and location, and that all steps are performed.

Abstract: Disclosed herein are display devices and systems including a collapsible display assembly: the assembly having a plurality of panels having a predetermined area and thickness, the plurality of panels connected using a plurality of living hinges; a plurality of posts connected to at least one panel; a plurality of protrusions disposed on at least one surface of at least one panel, the protrusions configured to limit a range of motion of at least one living hinge. Also disclosed herein are methods of using the disclosed display devices and systems, for example, to display information in a vending machine, such as pricing and/or caloric information.

Abstract: An endcap header assembly includes a primary frame and an auxiliary frame. The primary frame includes a back wall, a top wall extending forwardly from the back wall, and a bottom wall extending forwardly from the back wall opposite the top wall to define a sign holder track in front of the back wall and at least partially open opposite the back wall. The auxiliary frame includes a primary panel, a top panel, and a bottom panel extending across a bottom of the primary panel. The top and bottom panels collectively define a first auxiliary sign reception track on a first side of the primary panel and a second auxiliary sign reception track on a second side of the primary panel. The auxiliary frame is configured to be slidably and selectively received within the sign holder reception track in a first configuration and a second configuration.

Abstract: Provided is a tag retaining system for use with a container. The tag retaining system includes a tag retainer having a front surface and a back surface. The back surface has a middle portion interposed between first and second side portions. The first and second side portions have adhesive thereon for mounting to a surface of a container. The middle portion is free of adhesive to form a tag opening between the surface of the container and the middle portion and the tag opening receives a tag therein.

Abstract: A display sign mountable on a support surface where at least some of the information displayed thereon needs to be changed periodically. The sign includes a housing with one or more pockets defined therein, where an interior of each pocket is visible through an associated window on the housing. A set of display cards is receivable in each pocket in the housing. Each display card has different text or graphics thereon. Individual display cards may be selectively withdrawn from the set of display cards by grasping a tab on that particular display card and pulling the display card out of the pocket. The removed display card may be inserted in front of an outermost display card that was previously visible through the associated window. A single display card that is free of tabs may be inserted into one of the pockets and remain substantially permanently visible through the associated window.

Abstract: A sign holder assembly comprises a cross bar and a mounting member. The mounting member is selectively coupled with the cross bar and includes a front panel, at least two elongated reception channels, a first flange, and a second flange. Each of the at least two elongated reception channels is sized and shaped to sit over and extend at least partially around the cross bar to couple the mounting member to the cross bar. The first flange is offset from and extends substantially parallel to the front panel; the first flange defines a free top edge of the mounting member. The second flange is substantially coplanar with and extends in an opposite direction as the first flange to define a free bottom edge of the mounting member opposite the free top edge. The first flange and the second flange are configured to collectively receive a sign holder support member.

Abstract: A trading card (10) that is collectible by one or more users comprises a card body (12) and a first card insert (20). The card body (12) includes a first side (14), an opposed second side (16), and a first slot region (18A) that is formed into at least one of the first side (14) and the second side (16). The first card insert (20) is selectively positioned within the first slot region (18A). Additionally, the trading card (10) can further comprise a second card insert (20) that is selectively and alternatively positioned within the first slot region (18A). The card body (12) can further include a second slot region (18B). Each of the card inserts (20) can be interchangeably positioned within one of the first slot region (18A) and the second slot region (18B).

Abstract: An illuminated display that may display a decorative translucent placard from a window of a house or building is provided. The illuminated display may include a front portion with a sign holder and a plurality of lights configured to project a light on a sign when the sign is within the sign holder. The illuminated display may further include a slot configured to store additional signs. Therefore, a user may display one sign from the sign holder and then change the sign to display another sign when desired.

Abstract: Two components slide with respect to one another, and hold a stack of cards. A first component includes three members extending into a chamber formed by its C-shaped cross-section. When the components are slid apart, the first card in the stack is partially exposed. The card is pushed back past the outer members providing resistance to prevent the cards from moving while allowing only the top card to be pushed past the outer appendages to expose the next card. When the components are pushed together, a bump on an L-shaped component assures that the cards are aligned in a stack. The two outer members include tangs at their terminations that retain a stack of cards within the chamber and prevent them from sliding past. Between the outer members, a central spring extends in an angled configuration into the chamber and presses against the cards and frictionally retains them in position within the chamber.

Abstract: A tabbing apparatus is provided that includes a pocket and a tab element disposed within the pocket in a retracted position. The tab element includes an indexing segment configured for protruding from the pocket in an extended position as a tab and for being received within the pocket in the retracted position, an anchor portion attached to the pocket, and an intermediate portion connecting the anchor portion and indexing segment and configured for folding to allow the indexing segment to move between the retracted position and the extended position. The indexing segment is configured for displaying writing thereon for indexing a file.

Abstract: An aroma visual message carrier is shaped into a card device for carrying multisensory messages to deliver two interchangeable images with a scent releasing mechanism linked to the very act of image change by a recipient. The carrier comprises an image changing frame including a still image member with a first image printed on it and a sliding image member with a second image print partially interlaced with the still image member so that a manual sliding action of the still image member brings the two images interchangeably fade in and out laterally through each other. The still image member has a deposit of scent material formed rearward of its visual side.

Abstract: An aroma visual message carrier is shaped into a card device for carrying multisensory messages to deliver two interchangeable images with a scent releasing mechanism linked to the very act of image change by a recipient. The carrier comprises an image changing frame including a still image member with a first image printed on it and a sliding image member with a second image print partially interlaced with the still image member so that a manual sliding action of the still image member brings the two images interchangeably fade in and out laterally through each other.

Abstract: A lighted display for an address indication. The display includes a housing with a solar panel on top and a depending acrylic panel having numbers and letters etched thereon. The housing includes a rechargeable battery and appropriate electronics. A series of LEDs provided above the acrylic panel light the display. The panel includes grooves on the side of the top which interact with projections on the bottom of the housing which allow the panels to slide into place. A channel on the top of the panel receives the LEDs. The solar panel is preferably angled to receive more light and to shed water.

Abstract: The display panel has an outer surface to which a sign may be attached and an inner surface having a fastener composed of resiliently deformable material. An end of the fastener is separated from the display panel by a slit which is adapted to receive an outer plate of a conventional door handle The outer plate is held in the slit by the resiliently deformable composition of the fastener. The plate may however be removed from the slit by the application of a force opposed to the bias of the resilient material in order to widen the slit.

Abstract: By providing a unique housing member within which a plurality of separate display and holding members are operatively interconnected for sequential display relative to each other in a unique, cooperative, continuous, extending manner, a unique, hands-on, visually exciting and interest generating multi-panel display and holding system is realized. In the preferred construction of the present invention, a plurality of separate and independent display and/or holding members are cooperatively interconnected to each other for sequential movement relative to each other. Furthermore, each of the display/holding members are also constructed for being automatically positioned in a precisely desired continuous array in response to the receipt of pulling or movement force applied to one of the display/holding members or to a designated lead element.

Abstract: A serving dish for small children has a window through which exchangeable pictures can be viewed. The dish has an upper dish with a transparent window, a lower dish, and an exchangeable picture carrier situated in between. In order to permit easy cleaning of the dish and simple replacement of the pictures, the upper dish is fastened to the lower dish with at least one central fastening element bearing at least one rotatable picture carrier, such that different pictures are displayed in the window when the picture carrier is rotated.

Abstract: A pull-out index for physical file folders, books, boxes and the like is shown which includes a record device that has a surface for recording information about the contents of the folder, is slidably enclosed in a pocket formed by a holder that is attachable to the folder. The record device may be constructed to have a portion of tabs near the bottom edge. Stops placed at the top edge of the pocket cooperate with the tabs to prevent the record device from inadvertently being removed from the pocket while allowing the user access to the information recording surface.

Abstract: Apparatus for visualizing images, comprising: (a) a housing; (b) a window of transparent material with multiple lens effect arranged in a wall of the housing for making visible an image to be placed there behind; (c) moving means arranged in the housing for moving reciprocally a holder arranged behind the lenses of the window for holding a card-like medium with two or more images.

Abstract: A sign for workplaces and a method for its use. The preferred embodiment comprises a rectangular board retained by extendable brackets on the wall of a cubicle or the door of an office. Alternatively, the board may be retained on a wall, door or other surface by strips of hook and loop fasteners, glue, nails, screws, or any other suitable means. The board preferably has three sections or windows. The top and middle sections have front slots for retaining a choice of several rectangular message cards that can be slid in or out of the slots. The bottom section is an erasable white board on which messages can be written. Unused message cards may be stored in rear slots in each section, where they can be identified by their tabs that extend beyond a side of the board. Indicia may be included on the board such as trademarks or names.

Abstract: A sliding sign is movably mounted on an overhead truss which extends over a roadway. The sliding sign is mounted on rails connected to the top and bottom chords of the truss so that the sign may be moved from a position over the roadway to a position adjacent the shoulder of the roadway so that necessary maintenance may be performed on the sign without the need for lane closures of the roadway.

Abstract: The invention relates to a frame panel system (1) for suspending sliding panels that comprise a frame (8) and a fabric covering (6) or a board (6′). The panels can be freely displaced with respect to one another in parallel, thereby producing color effects or optical effects. The panels are movably received in a guide rail (2) by means of a special fixture (3). The inventive system is mainly used for window decorations, blackout panels and sun protection devices, as well as for room dividers and sliding elements for paneling shelves, wardrobes, cupboards or niches.

Abstract: A key includes a stem connected to a head and an identification system positioned within the head. The head has two opposing surfaces and an aperture that forms a visible area. The aperture extends along the opposing surfaces and interior walls of the aperture connect the opposing surfaces. The identification system is configured to be positioned within the aperture and includes a cover and an identification card that carries a key identification. When inserted, the cover extends across the visible area within the aperture so that the key identification is visible.

Abstract: A display device includes a rigid back cover to be attached to a mounting surface. A rigid front cover is positioned in overlying relationship to the back cover for showing product identification information, and a rigid panel is provided having a grip portion and a support portion for holding an information sheet. The panel is between and movable relative to the covers from a retracted position to an extended position. The panel in the retracted position has the support portion underlying and hidden by the front cover and the grip portion projecting outwardly from the front cover for providing access to pull the panel to the extended position. The panel in the extended position has the support portion projecting outwardly from the front cover, whereby the information sheet is hidden by the front cover when the panel is retracted, and the information sheet is exposed when the panel is extended.

Abstract: An image forming apparatus includes a recyclable molded exterior cover made of plastic with a plate holder at a back side of the cover. The exterior cover is mounted on the apparatus so as to swing between open and close positions. The exterior cover and the plate holder, which holds an information plate, are integrally molded.

Abstract: By providing a unique, pre-printed housing within which a pair of display members are operatively interconnected to each other to move simultaneously outwardly from the housing in an unexpected and unanticipated manner, a printed, visually exciting and interest generating advertising/promotional product is attained. In the preferred embodiment, the housing incorporates a front panel and a rear panel interconnected to each other and mounted in juxtaposed, spaced relationship defining an interior zone there-between. Each panel preferably comprises an eye-catching, visual display for generating consumer interest. In addition, an interior partition is mounted between the front panel and the rear panel, with the interior partition being affixed to one of said panels. Furthermore, an endless band is mounted about the interior partition in a manner which enables the endless band to freely slide peripherally about the partition in a continuous manner.

Abstract: A furniture system is particularly adapted to support group activities in open plans, and the like. A plurality of columns support an overhead framework on the floor of a building in a freestanding fashion at a predetermined elevation, generally above average user height. A plurality of individual panels are provided, wherein each panel is constructed to permit easy, manual, bodily translation of the same by an adult user. A hanger arrangement is associated with the overhead framework, and cooperates with connectors on the panels to detachably suspend the panels at various locations along the overhead framework. The panels are manually reconfigurable between many different arrangements to efficiently and effectively support different group activities. Preferably, the panels are capable of providing a partitioning function to visually divide at least a portion of the workspace, and/or a display function to facilitate group communications.

Abstract: A changeable image display device that has a front panel and a back panel forming an envelope open at one end. The front panel has first and second spaced windows and the back panel has a first image thereon in alignment with the first window of the front panel. A stationary transparency is fixed between the front and back panels and has second and third visual images thereon. A slidable V-shaped insert in the device moves between recessed and retracted positions and has first and second legs straddling the stationary transparency. A third window in the first leg of the V-shaped insert exposes the second visual image in the recessed position and exposes the third visual image in the retracted position. The second leg of the V-shaped insert covers the first visual image in the recessed position and exposes the first visual image in combination with the second visual image in the retracted position.

Abstract: A frame structure that displays media includes a support member, a frame housing and at least one interchangeable cartridge insert. The frame housing is supported by the support member and has at least one display opening for displaying the media. The frame housing also has at least one generic guide on the interior of the frame housing. The at least one interchangeable cartridge insert is adapted to fit in and be supported by the at least one generic guide of the frame housing of the frame structure. The interchangeable cartridge insert includes at least one rail member and a media support panel. The at least one rail member has rails that are adapted to engage with the at least one generic guide of the frame structure. The at least one rail member also has media supports for supporting the media support panel.

Abstract: A display apparatus has an interchangeable cassette including a first static image-bearing slatted panel and at least two further movable image-bearing slatted panels, movable relative to the static panel and interleaved therewith. The panels form part of the cassette in which any of the panels can be selectively removed and replaced. Additionally, the display apparatus includes a frame for receiving the cassette. The frame includes a drive system for selectively moving the movable panels to enable the slats on each of the movable panels to move from a position behind the slats of the static panel, to a position in front of the slats of the static panel, thereby enabling an image on the panels to be viewed.

Abstract: A new and improved information storage and display apparatus includes an outer information-bearing member and an inner information-bearing member. The outer information-bearing member and the inner information-bearing member display information relating to exercise routines. The outer information-bearing member includes an array of windows and window-associated informational data. The inner information-beating member includes an array of information fields which contain information data. The information data in the respective information fields are arranged in respective linear stacks. The array of information fields and the linear stacks of information data are arranged such that the information data in the respective information fields are registrable with the array of windows in the outer information-bearing member.

Abstract: An advertisement card display assembly particularly suitable for walls of plastic shopping carts. The assembly includes a rectangular backing plate held or formed in a cart wall opening. An upright wall is formed on and about the entire perimeter of the plate. Inwardly disposed tabs are formed on top of the wall on three of the four sides define slots. Display cards can be inserted from the fourth side into the slots and into a display position against the backing plate. The tabs retain the card in the display position. Keeper ribs on the backing plate at the fourth side prevent the card from slipping out of the display position but do not prevent the removal therefrom by being lifted slightly and slid back out the slots. The entire assembly is injection molded as one piece with the basket wall. Mold inserts form the slots and tabs.

Abstract: A device for the cyclic rearrangement of a pile of sheets with a housing having a viewing window, from which housing a slider member can be withdrawn and reinserted, and with elements for removing a sheet from an inserted pile and transferring the same to the other end of the pile on each movement cycle of the slider member. When the slider member is inserted the pile is pressed against the viewing window by a pressing arrangement which comprises rails supported on leaf springs. The rails having integrally moulded function elements, such as anchoring projections, sheet stop members, blocking projections, spacer ribs and guide prongs.

Abstract: The invention relates to a device for the cyclic rearrangement of a pile of rectangular or square sheets, especially a pile (182) of photographic prints, having a first (12) and a second (14) frame part which may be moved relative to one another and parallel to the main plane of the pile, and having means that, on movement of the frame parts backwards and forwards, remove an individual sheet from one end of the pile and add it to the other end of the pile again, these means comprising(a) a separating means (20,68,71) for separating the individual sheet from the pile,(b) a feeding means (22) for feeding sheets to the separating means,(c) retaining means (26,28,32,80) for holding the individual sheet in the first frame part and the remainder of the pile in the other frame part, and(d) a guide means (79) for guiding the separated individual sheet for the purpose of returning it to the other end of the remainder of the pile,the guide means having a stop member (52) which can be brought up against the transverse e

Abstract: A device for the cyclic rearrangement of a pile of rectangular sheets, especially photographic prints. The device includes first and second frame parts (12, 14), of which one has a viewing window (35) in front of a principal face of the pile. The frame parts can be pulled away from each other and pushed back together again parallel to the plane of this face. A single sheet is removed from one end of the pile when the frame parts are pulled away from each other and returned to the other end of the pile when the frame parts are pushed together. During its movement relative to the window, the sheet facing the window is held spaced from the window by elements on the frame parts which are arranged and designed so that they overlap all edges of the picture but nevertheless render possible the passage of the picture through the gap defined by those elements.

Abstract: A lottery ticket holder having a pair of planar members interconnected by and through a pair of partition (or side) members to form a hollow body wherethrough a lottery ticket slidably passes.

Abstract: A device for the cyclic rearrangement of a pile of sheets with a housing having a viewing window, from which housing a slider member can be withdrawn and reinserted, and with elements for removing a sheet from an inserted pile and transferring the same to the other end of the pile on each movement cycle of the slider member. When the slider member is inserted the pile is pressed against the viewing window by a pressing arrangement which comprises rails supported on leaf springs. The rails have integrally moulded function elements, such as anchoring projections, sheet stop members, blocking projections, spacer ribs and guide prongs.

Abstract: A graphical display system utilizes an array of base units, which are disengageably affixed to one another so as to form a base board of variable extent, having a grid of slots in the front face thereof. Cover pieces have elements for slidably engaging them upon the front face of the base board, enabling them to be shifted in both of two mutually perpendicular directions within the grid of slots. The cover pieces are of various sizes and dimensions, and appropriate decorative or characterizing elements are applied to their surfaces to permit use for creating effective graphical display components.

Abstract: A personalized greeting card system includes a foldable sheet member defining first and second panels and a plurality of interchangeable sleeve elements for removably fitting over and around the second panel. Each of the sleeve elements is provided with a separate printed message or greeting. The first panel defines opposed front and rear surfaces, and the front surface has a printed message or greeting thereon which preferably includes a person's name. The rear surface has a plural-lined printed message or greeting thereon which uses the letters of the person's name as the first letter of each line of the plural-lined message.

Abstract: An information-bearing and direction indicating sign is described having at least one rectangular information carrier provided with printing, a pictogram or a direction-indicating symbol and a frame holding the exchangable information carrier releasably. The frame includes at least two longitudinally-extended members running parallel to each other, which are provided with a plurality of opposing longitudinally-running receiving grooves, in which the information carrier or carriers are held edgewise and are easily removable. The longitudinally-extended members can have a connecting piece at each end for attachment to a wall surface. Means for easily holding or releasing one or more of the information carriers may be provided in the opposing receiving grooves in adjacent pairs of longitudinally-extending members. The longitudinally-extended members can be rods or bars and the connecting pieces can be formed by angular pieces which engage in mounting pieces permanently attached to the wall surface.

Abstract: A board game on which the players simulate a shopping trip to a mall by moving their distinctive markers along a route defined by rectangles depicting stores of various types. A spinner determines the number of squares a player moves her marker during a turn. Playing cards having decorative portions of different designs are stacked in storage areas, each associated with a rectangle of a store. Each player has a frame with a plurality of cavities for receiving and depicting the decorative portions of the cards. A player wins the game by being the first to fill all of the cavities in her frame with cards having decorative portions of the same design. A replica of an outfitted mannequin is formed on the front face of the frame. Several windows of transparent material are formed in the front face of the frame within the replica of the mannequin so that the decorative portions of the cards which are inserted in the frame will be visible as portions of the outfit of the mannequin.

Abstract: Disclosed is a display sign holder in the form of a semi-rigid rectangular sheet of optically clear plastic having elongated flat spacing structures extending along its top and bottom margin areas on one side so as to space the plastic sheet from a supporting surface and guide the longitudinal insertion and removal of an elongated display sign therebetween. The spacing structures are flat strips printed with ink on one or both sides to permanently display marginal information or design, and relatively thin transparent adhesive layers are disposed on both sides of the strips to adhere them to the plastic sheet and to the supporting surface.

Abstract: The invention provides an indicating device in the form of a holder for symbol elements. The device has a body portion that is attached to a c-section clamp. The c-section clamp is adapted to be springly engaged with the object to which the device is to be connected. Symbol elements are positioned along the body portion's guide track for selective alignment with a viewing aperture. This viewing aperture slides parallel to the face of the body portion so that each symbol element can be viewed individually, if so desired.

Abstract: Apparatus for the cyclic rearrangement of a pile of rectangular or square sheets, especially a pile of photographic prints, is provided. The apparatus has a first and a second frame part which may be moved relative to one another and parallel to the main plane of the pile, and a picture changer which, on movement of the frame parts backwards and forwards, removes an individual sheet at one end of the pile and adds it to the other end of the pile. The picture changer includes a first and a second separating member which, resiliently biased towards each other, define a through-gap which for the entry of the sheet being separated has a spacing greater than the thickness of one sheet and less than the thickness of two sheets, which spacing is, during the outward movement of the frame parts, maintained or reduced to the thickness of the sheet being separated, as appropriate.

Abstract: The invention relates to a container for a pile of sheets essentially of like format with a housing (12), which has a viewing window (35) exposing to view the uppermost sheet in the pile, and with a slider member (14), which can be pulled out of the housing parallel to the plane of the window, having a front wall (61) essentially flush with one edge of the housing, which wall is joined by side-pieces (44) to a slider member rear wall (20), as well as a grip arrangement (56, 57) that fits-in in the direction of the window (35) from the front wall (61) and comprises a grip top plate or wall part (56) and a grip bottom plate or wall part (57), the outer faces of which are essentially flush with the surrounding outer faces of the housing, and having at least one housing part (627) that extends parallel to the or one of the grip plates and, when the slider member (14) is in the pushed-in state, is covered by this grip plate (57).

Abstract: Apparatus for the cyclic rearrangement of a pile of rectangular or square sheets, especially a pile of photographic prints, is provided. The apparatus has a first and a second frame part which may be moved relative to one another and parallel to the main plane of the pile, and a picture changer which, on movement of the frame parts backwards and forwards, removes an individual sheet at one end of the pile and adds it to the other end of the pile. The picture changer includes a first and second separating member which, resiliently biased towards each other, define a through-gap which for the entry of the sheet being separated has a spacing greater than the thickness of one sheet and less than the thickness of two sheets, which spacing is, during the outward movement of the frame parts, maintained or reduced to the thickness of the sheet being separated, as appropriate.

Abstract: The invention relates to a device for the cyclic rearrangement of a pile of rectangular or square sheets, especially a pile (182) of photographic prints, having a first (12) and a second (14) frame part which may be moved relative to one another and parallel to the main plane of the pile, and having a sheet cycling structure that, on movement of the frame parts backwards and forwards, removes an individual sheet (188) from one end of the pile and adds it to the other end of the pile again, this sheet cycling structure comprising:(a) a separator structure (20, 68, 71) for separating the individual sheet from the pile,(b) a feeder structure (22) for feeding sheets to the separator structure,(c) a retainer structure (26, 28, 32, 80) for holding the individual sheet in the first frame part and the remainder of the pile in the other frame part, and(d) a guiding structure (79) for guiding the separated individual sheet for the purpose of returning it to the other end of the remainder of the pile, wherein the retain

Abstract: The picture viewing device comprises a housing and a slider member, which may be displaced backwards and forwards relative to one another and parallel to a viewing window, in order thereby to rearrange cyclically a pile of pictures. The pile is located in a removable container which has an opening complementary with the window and openings which allow the pile to be changed. Optionally, components of the change-over mechanism are contained in the container. The container may be formed by the slider member itself.

Abstract: A base panel is mounted to glass with metal strips and magnets. The magnets and metal strips are shaped to mate with each other for easy alignment of the sign. The panel includes an aperture behind which a sliding panel is mounted in a set of guide tracks. The sliding panel has lettering on it which may be viewed through the aperture in the base panel. The lettering showing through the aperture depends upon the position of the sliding panel. A magnetic stop holds the panel in one position.

Abstract: A sign holder holds a plurality of sign elements. The sign holder comprises an optically transparent planar front panel, a planar rear panel parallel to the front panel, and a peripheral frame situated between the front and rear panels and attached thereto, forming a display space between the front and rear panels within the circumference of the frame. The sign holder has opposed sides, a top and a bottom and includes an access slot in one of its sides near the bottom, the height of the access slot being less than the height of the frame so that a plurality of signs each shorter than the sign holder can be inserted into and removed from the display space via the access slot. The sign holder also has a side hole in the side opposite from the access slot, so that a pusher can be inserted into the side hole for pushing a sign element out of the display space via the access hole.