Abstract: A three-dimensional land-use model is constructed in modular units and used with a modular framework so that it can be readily modified and changed as a community develops and expands.

Abstract: Tickets for an instant lottery are imprinted with lottery numbers and serial numbers that are uniquely related and the lottery numbers are covered from view until after purchase, to provide control and distribution of winners and a high degree of security from fraud. By means of computerized fabrication a low cost and high security ticket is achieved. Playing cards for other games are also inexpensively fabricated.

Abstract: A pneumatic bumper system for the protection of moving vehicles and passengers therein is used with a passenger safety device such as an inflatable air bag. A pressurized gas container has a flexible portion with an impact surface. The pressure of the compressible gas in this container increases upon impact with an object and causes a valve to open, directing the passage of compressed gas to inflate the air bag.

Abstract: An electric broiler suitable for the charcoal style of broiling employs large surface heater blocks using relatively small high-resistance heater elements fully encased within the heater block, which is formed of cast iron or steel. Each heater element is assembled in an iron tube, which, in turn, is clamped between and embedded within two plates forming the heater block to insure a high degree of direct contact for efficient heat transfer.

Abstract: A device and method for dealing predetermined bridge hands to facilitate the widespread use of competitive scoring commonly followed in duplicate or tournament bridge by using a conventional deck of playing cards and a programmed device for setting forth different cuts of the deck for the different hands, different deals of the cut deck, and different distributions of the dealt hand so that each player cannot identify the hands dealt to each of the other players for the successive deals. A device for instructional analysis of bidding and playing and for presentation of expected scores and contracts is coordinated with the programmed dealing device.

Abstract: Structures such as the shell of a boat are formed in a ferro-cement laminate composed of a fiber glass reinforced skin and ferro-cement with a coupling between the fiber glass layer and the ferro-cement that consists of fabric connector tapes that are bonded to the fiber glass and that have projecting wires which are secured to the armature wires of the ferro-cement. The structure is fabricated with the molding of the fiber glass skin with the connector tapes bonded thereto and the connector wires projecting therefrom. Thereafter, the ferro-cement armature is fitted within the molded shell and the connector wires secured thereto, and the cement is poured and shaped. An epoxy adhesive bonds wet cement to the cured fiber glass resin impregnant and armature wires and also fills any voids in the poured cement.

Abstract: This surveillance system employs a closed circuit television camera or cameras used in conjunction with an electronic cash register or registers employed at one or more point-of sale stations. Combined images of transaction items viewed by a camera at a given station and transaction data (such as prices) rung up on the cash register at said station are presented on a television monitor. Signals for these combined images are also stored on video tape together with coded signals related to transaction data to achieve computerized editing.

Abstract: Structures which have a wide variety of applications including that of educational toys are formed of chains of hinged three-dimensional units such as tetrahedra. The chains may be formed by folding a sheet of material.

Abstract: A swimming pool lift installation for the handicapped employs a platform for carrying a wheelchair that is lowered and elevated with the platform so that a handicapped person can sit on his chair and be lowered into the pool for swimming away from the chair and can leave the pool by swimming back into the wheelchair. The chair is releasably secured to the platform so that there is no danger of it being rendered unstable by its buoyancy in the water and so that it can be wheeled on and off the platform. A water hydraulic system operates the lift to avoid contamination of the pool.

Abstract: A seal for flow passages has directional characteristics allowing gases or fluids to flow freely in one direction while restricting the flow in the opposite direction. The seal includes a flow diverter cone (or other inclined surface) which is spacedly mounted on a flow inverter cone (or other inclined surface) in a passage to effectively reverse the direction of undesired counterflow of gases without restricting normal gas flow. The seal has no moving parts but serves as an effective aerodynamic valve. Addition of this seal to the stack of a flare system, or to other chimneys, restricts the flow of air into the stack while allowing the waste gases to be exhausted with negligible restriction.

Abstract: A tricycle for adults having stable handling characteristics provides pedal drive and electrocmechanical drive for two-speed propulsion, coasting and braking.

Abstract: An energy absorbing bumper system for protection of moving vehicles. The system comprises a flexible section and a rigid section, each containing compressed air, and an orifice passage or valve for controlling the flow of air between the flexible section and the rigid section. The flexible section is contoured for a generally flat impact surface to provide efficient operation and compact size, and to yield an aesthetically pleasing shape, and is held in shape by dividing the flexible section or bag into a large number of compartments lying adjacent to each other along the direction of the surface to be protected, and by introducing compressed air into each compartment. Each one of the compartments of the bag is connected to the rigid section by means of an orifice, or by a relief valve.

Abstract: A digital communication system for the transmission of digital data with a modulated carrier uses a modulation locked loop and pseudo-random code to develop synchronization signals for the digital data signals and to ensure a high level of communication reliability.

Abstract: A telephone circuit monitoring system includes sampling means for repeatedly sampling the bistate and linear (a-c and d-c) control signals concurrently on a plurality of trunk circuits. When any of the circuits go off-hook, a central control initiates the sampling operation and repeatedly directs the sampling of the linear signals and bistate signals of each of a plurality of off-hook circuits until the monitoring purpose has been served.

Abstract: A pulper for reclaiming cellulosic fiber from scrap paper includes a high-speed pressure-wave-generator impeller with individually hinged arms and a movable foraminous filter in the form of a wire screen that is flexibly mounted. A plurality of impellers and filters are used in a multistage pulper. The pulping energy is directed through the movable filter to isolate the energy source from contact with the fibers. In multistage fibering, filtering is performed between each stage and with successively finer filtering.

Abstract: A system for leveling vehicles such as those used for family camping employs a plurality of jacks secured to the front and rear bumpers of the vehicle. The jacks are adjustable in length and are pivoted to the front and rear bumpers and have a ground engaging fulcrum portion. When the vehicle is driven against the jacks, it tends to rotate the jacks into a vertical condition around the ground engaging ends of the jacks, and thereby partially lifts the vehicle off its spring suspension an amount corresponding to the height of the jack. To restore the vehicle to its operating condition, it need only be driven in a reverse direction, rotating the jacks out of their vertical condition and restoring the full weight of the vehicle to its spring suspension.

Abstract: A method of hydrolyzing cellulose to monosaccharides, especially glucose, by subjecting cellulose, under controlled temperature and pressure, to an aqueous mixture of calcium chloride and an acid, preferably hydrochloric acid, providing a low concentration of H.sup.+. When the starting material is pure alpha cellulose, glucose is produced in very high yields. When the starting material is a mixture of hemi and alpha cellulose, the resultant product is a mixture of pentose (xylose) and hexose (glucose) sugars. Refluxing the reaction mixture containing pure alpha cellulose, about 55% calcium chloride and only about 0.01% hydrochloric acid, based on the total reaction mass, will produce in a relatively short time relatively high yields of glucose.

Abstract: A broadband microwave attenuator is formed by connecting a plurality of PIN diodes in a modified Tee network. Four semiconductor chips of PIN diode material are arranged in a flat layer sandwiched between conductors to form a strip-line configuration of a TEM transmission line, whereby the diodes are part of the line. This strip-line construction is used with outer diodes connected in series circuit relation between input and output terminals, and inner diodes in shunt relation to ground to form the Tee network. The diodes are constructed as silicon chips and are mounted in very close relation with a substantially uniform conductive strip forming the series-circuit connection between the central diodes.

Abstract: Fertilizers with controlled nutrient release produced from the treatment of solid waste with a phosphate to derive paper pulp and precipitated inks, coatings and waxes removed from the paper fibers.

Abstract: A pyrotechnic toy noisemaker detonates an explosive charge on impact without hazards of burning or shrapnel. A container with constricted outlet retains solid particles and releases gaseous products.