Abstract: A molecular model system in which a first component representative of an atom includes at least one elongated shank that has a cylindrical section of one cross sectional area with an inwardly extending shoulder and an outwardly extending abuttment located between the shoulder and the part of the component that represents the nucleus. The molecular model system further includes a fastener component that has a hollow tubular portion longitudinally slotted at one end and having an axial length that represents predetermined portion of a covalent radius of the atom. The inner surface at one end of the slotted end portion extends inwardly to be hooked behind the shoulder to interlock with the shank.

Abstract: A method of designing an outdoor playground complex is disclosed. Complex components are represented by reduced scale, two-dimensional projections of interchangeable playground devices. The projections are formed into pliable, transparent templates consisting of an electro-static vinyl material. The significant features viewable in each projection are lined on the templates. The components are stored on pliable sheets which releaseably adhere to the templates. The complex itself is designed by selecting possible components, removing the same from the storage sheet and placing the selected templates adjacent to each other on a transparent work surface which is adapted to releaseably adhere to the template.The combination of transparent, lined templates and transparent work surface allows easy photocopying of the selected design with all significant features clearly set forth. The transparent work surface allows the design to be laid over scale drawings of play areas if desired.

Abstract: A game which may be played by two or more persons includes a playing board and a pair of dice. The board comprises three concentric play areas, the outer two of which are divided into arcuate sections. The central play area designates a type of dice which is to be used with the particular game board. The various play areas are provided with indicia to indicate an appropriate payoff rate to be associated with that area. A number of variations of the game board are possible, each of which is to be played with particularly shaped dice.

Abstract: An educational device for aiding in the teaching of the mechanics of reading which employs color coded cards using three colors to facilitate teaching and learning the alphabet, the sounds the alphabet letters represent, subsequent word attack skills and necessary sight words.

Abstract: A device is provided which can be used as an educational means for teaching young children how to tie a double bow knot, particularly in their shoe laces, or as an aid to the handicapped child lacking sufficient manual dexterity in tying such a knot. Basically the device is a planar body member in which is provided two pairs of spaced-apart openings in alignment with one another, the two intermediate openings being connected by a narrow opening or slit. The device allows "bunny ear" loops to be formed in the intermediate spaced-apart openings and to form the double bow knot by making a simple overhand knot with the two "bunny ear" loops.

Abstract: A playing board is divided into a number of discrete playing areas bearing respective numerals in a reading sequence. A plurality of game pieces such as cards or tiles, whose aggregate number approximates the number of the areas, respectively bear letters of the alphabet. The number of game pieces bearing a particular letter corresponds generally to the normal frequency of occurrence of that letter. The player makes a plurality of random draws of a certain number of the tiles and, attempting to form words or parts of words, places them on respective areas of the board in relative positions that form words or are likely to form parts of words in subsequent plays of subsequent draws. Each play of a draw is playable only in areas having higher numbers than those played in a previous draw except when a play can no longer be so made whereupon play can be made in low numbered areas toward the beginning of the board.

Abstract: An educational device utilizing light as the displaying medium is provided. The device has a light-impervious housing having a hole in the top and a light source therein. There is a plexiglass panel inside said housing, accessible through the hole in the top of the housing. The light source is located directly offset one edge of the plexiglass panel such that light rays from said light source enter the plexiglass panel through this edge and are entrapped therein. The housing also has slits in the sides thereof directly below the plexiglass panel so that paper inserts can be placed inside the housing directly beneath the plexiglass panel. The device is employed by turning on the light and by either inserting materials into the above-described slit or by writing on the outer surface of the plexiglass panel with a grease pencil. The light entrapped in the plexiglass panel will escape thru the top of the plexiglass panel and illuminate the inserts and the writing for the user's viewing.

Abstract: A premixed basic color media set is disclosed, the basic set including coloring media varying through a spectral range of selected hues, which can be grouped to create palettes of tonally related source colors for use in rendering color compositions by artists. The palettes so created vary through a spectral range of tonal influences. The basic set of coloring media is based on the derivation of a limited number of colors, including a selected group of primary colors, here disclosed as the artist's red, yellow and blue, and those essentially different colors resulting from illumination or toning of these primary colors through a spectral color range of illumination. Physical arrangements of coloring materials and associated color charts are provided to facilitate use of the premixed coloring materials when grouped into tonal palettes.

Abstract: A method and system for automated training of a subject in manual skills, wherein body motion is measured so as to derive a set of motion variables, the motion variables are compared to a reference motion to derive a motion error value, the motion error value is compared to a threshold error value corresponding inversely to the proficiency level of the subject, and a training signal is provided to the subject whenever the motion error value exceeds the threshold error value.

Abstract: A series of interrelated sets of tetrahedron blocks. Each set comprises twelve blocks capable of assembly into a rectangular parallelepiped using all twelve blocks, and is also capable of assembly into an eight-block pyramid and a four-block tetrahedron. The pyramid and parallelepiped of all sets are the same height. The tetrahedrons are preferably hollow and each of them has a magnet for each face, e.g., affixed to the interior walls of its faces, the magnets being so polarized that upon assembly into a cube or pyramid, the magnets of facing faces attract each other. Preferably, the blocks are colored in such a way that faces of the same size and shape are colored alike and each size and shape has a different color.

Abstract: A series of interrelated sets of tetrahedron blocks. Each set is capable of assembly into a cube with all the cubes being identical in size. Typically, there are at least three such sets, though there may be more; and when there are three sets, for example, one set contains twice as many tetrahedron blocks as the second set and four times as many as the third set. The tetrahedrons are preferably hollow and each of them has a magnet for each face, e.g., affixed to the interior walls of its faces, the magnets being so polarized that upon assembly into a cube or pyramid, the magnets of facing faces attract each other. Preferably, the blocks are colored in such a way that faces of the same size and shape are colored alike and each size and shape has a different color.

Abstract: A constructional kit comprising elongated connectors and panels. The elongated connectors can only be joined to panels and the panels can only be joined to connectors. Elongated connectors have no means by which they can be joined to other elongated connectors, and panels have no means by which they can be joined to other panels. The elongated connectors comprise a number of longitudinal grooves into which edges of the panels may be pressibly fitted. Certain panels formed as doors and windows are provided with oppositely extending, axially aligned pins. The elongated connectors further comprise holes formed within each groove for pivotally mounting the pin-bearing panels.

Abstract: A modular teaching and demonstrating laboratory having a cabinet with electrical apparatus mounted on a hinged outside cover and has a number of compartments contained therein for the transport of electrical fixtures that are used in conjunction with the externally attached electrical apparatus. The external electrical apparatus provides a pre-assembled electrical circuit of boxes and connecting conduit that are used to teach and demonstrate electrical principles and operation.

Abstract: A simulated finger model having articulated simulated finger bones with cords representing the major tendons to produce flexion and extension of the finger bones in the manner of the natural hand, with interconnections between an extensor tendon and intrinsic tendons to produce the proper interrelationship therebetween; with connections between the extensor tendon and the middle phalanx with a hood interconnecting the extensor tendon and the intrinsic tendons adjacent the metacarpophalangeal joint; with a resilient component interconnecting the simulated bones of the metacarpophalangeal joint tending to restore it to extended position; and with a further elastic component interconnecting the first and middle phalanges representing the capsule and collateral ligaments of the proximal interphalangeal joint.

Abstract: A hollow body is in the shape of a tracheobronchial tree having a plurality of segments. The hollow body is supported in a carrying container so as to be hidden from view while having its entrance opening disposed to receive a bronchoscope operated by a trainee. The hollow body has forty openings at various locations for various segments of the tree with each opening having one end of a fiber optic bundle disposed therein. The other end of each of the fiber optic bundles is supported in an opening in a backing plate. A photographic print of a drawing of a tracheobronchial tree having the same segments as the model is secured to the upper surface of the backing plate. Each of the openings in the backing plate is aligned with an opening in the print so that a light from the probe of the bronchoscope illuminates the same segment of the tracheobronchial tree of the print as the segment of the hollow body having the probe of the bronchoscope inserted therein.

Abstract: A training manikin for teaching cardiopulmonary resuscitation is provided with a hollow body in human form, with two nostril orifices and a mouth orifice, and an air passage extending from the nostril and mouth orifices entirely through the interior of the body to a flushing orifice, whereby the air passage is readily flushable through the introduction of a flushing fluid into the air passage through any one of the orifices. The manikin has simulated heart, pulmonary and pulse systems, with instant readout to a separate console box.

Abstract: A booklet having a plurality of pages incorporated therein on which the enlarged depictions of each hole of a golf course appear together with descriptive material relating to the holes with the upper outer corners of each page including a cutout area providing access to and revealing a score recording area along the inner surface of the right-hand marginal portion of the last page of the booklet. The bottom edge of the cutouts are progressively lower from the first hole to the last hole of the golf course and the bottom edge of the cutout provides a guideline in relation to the score recording area so that the spaces for the score for the holes depicted on the pages would be immediately above the bottom edge of the cutout on that page. Also, the cutouts reveal the actual score descending from the first hole as play progresses around the golf course.

Abstract: A method of providing a human knee model suitable for teaching operative arthroscopy includes the steps of modifying a bovine knee to render its appearance more human-like and to facilitate access to the interior of the knee joint, and encasing the modified knee joint with a synthetic fluid-impervious cover to allow for continuous irrigation of the knee joint. Lesions are created in the menisci of the knee, and loose bodies are added to the knee joint to simulate various injuries.

Abstract: An orientator, for enabling visually handicapped persons to examine objects having projecting details, such as a relief illustration, comprising a grid structure for overlaying the object, having tactilely identifiable reference points distributed thereon, and means for holding the grid structure in a spaced relationship from the object. The tactilely identifiable reference points may define, for example, sectos of a circle or rectangle, or both.

Abstract: A molecular model building set for the formation of models of molecules and compounds primarily in the field of organic chemistry is disclosed. The set includes dimensionally accurate model building members (10, 60) that are rotatable about their axes, and can be interconnected and/or interlocked to form specific molecular models. Model building members depicting a double molecular bond (80) and a triple molecular bond (90) are also provided and can be interconnected and/or interlocked with the model building members (10, 60). All of the aforementioned model building members (10, 60, 80 and 90) are formed from a polypropylene copolymer material resulting in the members being inherently flexible while retaining sufficient rigidity to depict strain in molecular bonding. Because of this flexibility, the rotatability of the members, and the manner in which the members can be interconnected and/or interlocked, models of all known molecules and compounds in the field of organic chemistry can be formed.