Abstract: A recessed lighting system is provided. The recessed lighting system a universal light module to emit light through a light transmissive cover, a plurality of trims wherein each trim has the same means for attaching to the light module and the same size opening that aligns with the light transmissive cover of the module, but have different flange widths; and a plurality of different size recessed lighting fixture housings that each include an annular cavity to receive the light module attached to one of the trims. Each of the cavities is differently sized and is coupled to the trims using support brackets on the trims.

Abstract: A multiple blister, dye-containing unit for attachment to the back face of a shooting target sheet is formed into a suitable shape corresponding to a predetermined portion of an image on the front face of the target sheet by removal of a portion of a larger array of blisters arranged in rows and columns. The multiple blister unit is than secured by adhesive to the back face of the target sheet.

Abstract: A test form comprises a substrate, a chromogenic material applied to at least a top surface portion of the substrate, a removable opaque layer overlaying a portion of the chromogenic material, the chromogenic material being adapted to irreversibly generate a visible change in color to form a desired indicia, upon exposure of the area to an activating agent such as heat to predetermined areas on a bottom portion of the substrate, all without disturbing the opaque layer covering the indicia so produced. The present invention is further directed to a method and system for customizing a test form having a removable opaque layer, by permitting printing under the opaque layer to be concealed until the corresponding opaque layer covering the indicia is removed.

Abstract: An association game including an overall image a portion of which is in latent invisible form to be developed by a marking means to provide an identifying configuration for a visible portion movably compatible with the latent image developed portion.

Abstract: A power of observation game including two sets of visible images with each set including visible images substantially corresponding and with a preselected portion of at least one corresponding image of one set of visible images being visibly incomplete with the completing portion being printed invisibly to be artistically developed visible by an observing participant with a marking member to confirm correctness.

Abstract: A security paper authenticating system comprises, in combination, a security paper carrying both starch and an iodate salt, typically potassium iodate, and an authenticating composition comprising an acidic solution of an iodide salt, typically potassium iodide, the system being such that on applying the authenticating composition to authentic security paper, as by a pen, brush or stamp pad, iodine is generated and a characteristic starch-iodine coloration is produced. The authenticating composition is preferably aqueous or part-aqueous, and is preferably made acidic by means of a weak organic acid such as tartaric acid. The authenticating composition preferably also contains an antioxidant such as ascorbic acid. The invention extends to the paper and the authenticating composition individually.

Abstract: A learning association game wherein at least two series of images are visibly presented on at least one marking sheet with each of the images of one series being logically related to one of the images of the other series and with the images of each series being in different order to be selectively identified by a responding player with a marking instrument to visibly indicate indicia associated with at least one series of images, the game having a confirmation area associated therewith which includes the visible indicia and the correct invisible answers to be developed with the marking instrument.

Abstract: A color memory toy set has a color memory toy with surface, at least one portion of the surface being provided with a color memory temperature-sensitive color changing layer colored with a coloring material including a color memory temperature-sensitive dye exhibiting hysteresis characteristics in response to temperature change between a colored state and a colorless state or between a color (I) state and a color (II) state. The toy set also includes a writing pen for either causing an image to appear or disappear on the color memory temperature-sensitive layer by drawing the image on the layer to change the color state of the drawn portion into a first state, or for causing an image to appear or disappear on the color memory temperature-sensitive layer by drawing the image on the layer to change the color state of the drawn portion to a second state.

Abstract: A kit for producng symbols of unpredictable colors on paper including a plurality of individual sheets of paper each having a coating therein containing a reactant composition. A writing instrument is included in the kit to be usable with the various paper substrates supplied therein for writing thereon in various colors depending upon which reactant is contained within the coating of a particular piece of paper. The different paper substrates each will include a reactant chosen from one of several reactants used in the kit. Each of these individual reactants when contacted by the writing instrument will react with an agent in the fluid of the writing instrument to display a coloration on the paper substrate which is different from the reacted coloration resulting from usage with a different reactant. Each paper substrate has a base coloration which is in no way indicative of the particular reactant contained in the coating thereon.

Abstract: A composite sheet for forming visually observable designs comprising a transparent deformable upper layer having a plurality of pockets formed therein; a transparent intermediate layer sealed to the upper layer along edges of the pockets to form a plurality of containers; a lower layer connected to the intermediate layer, with the lower layer having a plurality of fluid activatable invisible designs formed thereon; and invisible design activation fluid contained within the containers to transform the invisible designs into visually observable designs upon breaking of the intermediate layer adjacent the containers by pressure exerted against the upper layer and subsequent contact of the fluid with the lower layer.

Abstract: A toilet training aid comprising a porous sheet of papers having a normally invisible picture imprinted thereon is attached to the rim of a toilet bowl over the mouth thereof whereby the attention of a child is attracted to use the toilet as the picture becomes visible when wetted by the urine of the child using the toilet.

Abstract: The method includes the steps of inscribing or imprinting a symbol or message on a substantially flat surface of a block of plastic while the same is at an elevated temperature by the application of pressure to said surface. The plastic block is then cooled to approximately room temperature and all visible evidence of the inscription is "erased" by physically removing, as by grinding, the superficial layer of material which bears the visible inscription. The inscription is made to reappear on the surface of the remaining block of plastic by heating the same to approximately the elevated temperature at which the inscription was made until the symbol or message reappears.

Abstract: A sharp imaging, non-smearing system for latent imaging and subsequent visual development of printed text or the like is provided which can be used on a variety of substrates (e.g., paper, metal, cloth, synthetic resins) and is extremely stable and easy to use. The system involves first imaging a substrate with an invisible ink containing a dissociable transition metal salt such as CuSO.sub.4, with subsequent application of a liquid developer containing a solubilized color precursor such as thiooxalic amide which complexes with dissociated transition metal ion to give a sharp, virtually instantaneously developing, long lasting color. Depending upon the metal salt selected, different colors can be obtained upon development. The system of the invention can be used in a variety of contexts, such as in self-testing materials or novelty items.

Abstract: A game device including first and second areas with the first area having a number of visible questions, each having a visible identifying indicia associated therewith and at least two visible answers with invisibly marked designations indicating correctness of the answer of the question responded to and a second defined area having random chance selection means to indicate the question to be responded to by a player.

Abstract: A hidden image, which can be made detectable by rubbing, is produced by applying to a substrate surface a first ink-like material in image configuration, then applying a second ink-like material to cover the image and an area surrounding the image. Each of the first and second ink-like materials contain one of a color-forming pair of reactants which are colorless or light colored in their unreacted states, but which together produce a colored product when brought into reactive contact. Separation of the two reactants is assured by encapsulating at least one of the reactant pair. Reactive contact is caused by rubbing the printed area or otherwise applying sufficient pressure to rupture the capsules, releasing one of the reactants into intimate contact with the other reactant.

Abstract: A scoring form for tests having a series of questions with multi-choice answers.The form provides an answer group for each question. An answer group is a matrix of rows and columns. The number of columns (or matrix elements in a row) is typically equal to the number of answer choices in the questions, with the elements in each row identified the same as the answer choices. The number of rows in the matrix is equal to the position number of the question in the ordered series of test questions. Each line in the matrix is identified by the question number and one of a series of hyphenated identifiers.Each element in each matrix contains a latent image address which is invisible to the testee until he activates the latent image, as by rubbing the spot which he associates with the correct answer.