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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 5896867 | Coilable structures containing beaded dental floss Coilable, tape-like structures are disclosed, that contain parallel segments of dental floss. Each segment has a bead on each of its ends for handling by an applicator. The beads can be fixed to the ends of a floss segment, either by melting its ends (wit... | 04/27/1999 |
| 5658003 | Trailer system A trailer system has a drawbar that connects to a flat bed via a laterally-swiveling joint. The drawbar has a forward member and an aft member. A clevis structure on the mating-end portion of each drawbar member is formed by two plates fixed to the sides ... | 08/19/1997 |
| 5650035 | Coilable structures containing beaded dental floss and methods and apparatus for making them Coilable, tape-like structures are disclosed, that contain parallel segments of dental floss. Each segment has a bead on each of its ends for handling by an applicator. The beads can be fixed to the ends of a floss segment, either by melting its ends (wit... | 07/22/1997 |
| 5167753 | Apparatus for making beaded dental floss or the like A filament of thermoplastic material is formed into a continuous strand of connected beads having a longitudinal slit that penetrates about half way into each bead. This is done by passing the filament between a pair of rotating mold wheels having matchin... | 12/01/1992 |
| 4776357 | Dental floss applicator A dental floss applicator is especially designed to cooperate with a floss-loading device. It has a pair of resilient, juxtaposed, divergent prongs attached to a handle. Slots in the ends of the prongs enable the applicator to hold floss of the type havin... | 10/11/1988 |
| 4753254 | Method and apparatus for a dental floss system A method and apparatus for a dental floss system is disclosed, using an applicator having two resilient prongs on one end of a handle member and floss having nodules fixed thereto and spaced apart at distances shorter than the relaxed distance between the... | 06/28/1988 |
| 4509621 | Variable-load energy absorber and method for making energy absorbers having variable-load capability An inversion tube energy absorber, that absorbs energy by inverting a tube, is made to be capable of infinitely variable loading within a prescribed range by addition of a constricting device surrounding the inverted tube where it emerges from its housing... | 04/09/1985 |
| 4500114 | Device for controlled differential flow A flow control device for use with inflatable confinements or "air bags" of vehicle occupant safety restraint systems is produced by incorporating in the wall of the confinement a fluid permeable portion which has a filamentous surface on one side in whic... | 02/19/1985 |
| 4434780 | Extendible grill A portable cooking grill has an annular frame with parallel bars spanning it. Each of the bars is attached at each end to opposite sides of the frame. Two U-shaped extension members are attached to selected parallel bars, for sliding motion thereon, and c... | 03/06/1984 |
| 4369904 | Scabbard for firearms An elongated tube that is open at one end and tapers to a closed end has an elongated stiffener or spine fastened inside the tube. The stiffener is sufficiently wide to maintain the normally flat tube in an open position and to provide anchor means for st... | 01/25/1983 |
| 4263243 | Method for making a flexible bearing A strong, light-weight flexible bearing, particularly suitable for use in mounting a movable thrust nozzle to a rocket case, is made by stacking reinforced plastic shims, having the forms of concentric, spherical zones, alternately with layers of elastome... | 04/21/1981 |
| 4175470 | Gun with rapid firing rate A gun has a projectile housing and a cartridge chamber, aft thereof, aligned between a barrel and a breech bolt containing a striker. The striker is positioned to impact on primer caps of expendable propellant cartridges, which are placed in the cartridge... | 11/27/1979 |
| 4173967 | Draft air control for fireplace grate A tray has an upturned flange at least on the front edge thereof, and support means to space the tray above the floor of a fireplace, such that an opening is provided under the front of the tray to permit air flow. A hollow, raised portion in the tray, or... | 11/13/1979 |
| 4168031 | Thrust control nozzle for rockets The cowl of a spike nozzle is attached to the inside of the aft closure of a rocket case by means that allow it to rotate about a fixed point. Fluid-operated actuators mounted in the aft closure bear against the cowl to effect changes in the direction of ... | 09/18/1979 |
| 4164834 | Junior stirrups attachment for adult-size saddle A flexible, main strap has a stirrup attached to each end, a forward-extending loop fixed to the center of the main strap, and a small, forward-extending strap also fixed to the main strap. The loop is passed through the typical opening under the pommel o... | 08/21/1979 |
| 4157788 | Low friction, movable, rocket nozzle A ball-and-socket, thrust nozzle for rockets has a movable member retained by a stationary member attachable to a rocket. The movable member includes a venturi throat and an expansion cone for the propulsive gases. At least one of the nozzle members has a... | 06/12/1979 |
| 4147114 | Waste treatment system The discharge end portion of a sewage delivery tube is surrounded by the input end portion of a conveyor pipe. A long, flat strip of consumable filter material is inserted through the annular space between them and into the conveyor pipe. Prior to this in... | 04/03/1979 |
| 4141950 | Method for making flexible, cylindrical bearings Cylindrical, flexible bearings of the type constructed of concentric, annular layers of elastomer and rigid material mutually bonded together are molded under high temperatures and pressures to fluidize the elastomer and to neutralize the tensile stresses... | 02/27/1979 |
| 4134616 | Seat cover A rectangular, coarse-weave blanket is folded upon itself at one edge to form a pocket, which is sewn into that position at the ends and, optionally, at intermediate locations. A long tube of leather, or other flexible material, is fastened at one side to... | 01/16/1979 |
| 4120792 | Combined filter and incinerator An enclosure having an inlet and an outlet for hot air, and an inlet and an outlet for waste water, contains a plurality of refractory, porous, tubular, membrane-type filters, each of which is closed at one end and connected at its other end to the waste ... | 10/17/1978 |
| 4108381 | Rocket nozzle bearing seal The invention is a special, low-friction, compliant bearing seal for use between the stationary and movable members of a thrust-vectoring, rocket nozzle. The movable member of such nozzles typically contains the throat and expansion cone for acceleration ... | 08/22/1978 |
| 4073242 | Sewage sludge disposal A slanted sieve is used to drain liquid out of sewage and to concentrate the sludge, the liquid being drained into a first tank and the sludge allowed to slide into an adjacent, second tank. The sludge is drawn from the second tank into a macerating pump ... | 02/14/1978 |
| 4063787 | Cylindrical, flexible bearings Flexible bearings of the type constructed of alternate, clyindrical layers of rigid material, or shims, and elastomer bonded together are made substantially free of internal, tensile stresses by making the walls of the shims wedge-shaped and by alternatin... | 12/20/1977 |
| 4061901 | Telemetering system A small, permanent magnet is eccentrically supported on a shaft that is rotated by some means, such as gears, in response to linear change in some quantity, e.g. accumulated water from rainfall. A float on the surface of the water in a receptacle transmit... | 12/06/1977 |
| 4047667 | Support system for rocket thrust nozzles A system for mounting a movable thrust nozzle to a rocket case, wherein a plurality of cups surrounding the nozzle is fixed in a common plane to one of the members (the nozzle or case) and a plurality of plugs, each loosely fitting into a corresponding on... | 09/13/1977 |
| 4029014 | Safety igniter for flares A safety igniter for flares is attachable to the flare parachute by a lanyard that operates the igniter when the parachute opens. The igniter is packaged in a housing that is mounted into the flare casing adjacent the ignition surface of the flare candle.... | 06/14/1977 |
| 4029557 | Treatment of water containing cyanide Sodium chloride is added to water which is then passed through at least one electrolytic cell. There, electrolysis of the sodium chloride produces chlorine molecules and sodium hydroxide. The water is then flowed into the presence of metal-cyanide contami... | 06/14/1977 |
| 4019553 | Method for mounting and inflating tubeless tires A tubeless tire to be mounted is placed on a wheel rim so that a side-wall bead of the tire is in contact with the adjacent wheel rim flange. A plastic, water soluble substance of doughy consistency is then placed in the gap between the opposite side-wall... | 04/26/1977 |
| 4013010 | Gas generator with expandable cartridge The invention, which is especially useful for inflating safety cushions for automotive vehicles, is essentially an orificed housing and an expendable cartridge therein. The cartridge has a hermetically sealed can containing a layer of gas generant materia... | 03/22/1977 |
| 4005876 | Gas generator for automobile safety cushions An elongated gas generator, designed especially for use on the passenger side of the front seat position of an automotive vehicle, has a combustion cartridge having a central, electrically initiated igniter surrounded by gas generant material. This, in tu... | 02/01/1977 |
| 4004741 | Grinding mechanism A hopper has an adjustable opening into a tube that leads to the interior of a drum-shaped housing containing a grinding impeller that also functions simultaneously as a screw-type fan and as a paddle-type fan, formed to maximize air turbulence at the gri... | 01/25/1977 |
| 3989191 | Thrust control nozzle for rockets The central portion of the aft closure of a rocket motor case is recessed inwardly and held in fixed relationship to an apertured aft closure dome by brackets. A sleeve, operating in sealed relationship inside an annular, aftwardly extending flange fixed ... | 11/02/1976 |
| 3985076 | Gas generator An electric squib igniter and a gas generant composition surrounding it are enclosed in a hermetically sealed container. This is enclosed in an inner housing which is surrounded by an annular outer housing. An annular filter surrounds the gas generant com... | 10/12/1976 |
| 3983816 | Compositions for producing flickering signals The compositions burn to produce flickering signals of flame and smoke, and which in addition emit infrared and radar signals. The compositions comprise a fuel of either magnesium, aluminum or both, a reactive chlorinated aromatic compound such as hexachl... | 10/05/1976 |
| 3972545 | Multi-level cool gas generator A gas generator for inflating safety cushions in automotive vehicles has a tubular housing, closed at both ends except for a discharge orifice in one end. A hermetically sealed container in the completely closed end of the housing is divided by a consumab... | 08/03/1976 |
| 3968584 | Illuminated sign A very thin and rugged illuminated sign has a transparent, light-source plate with cavities in its edges to receive light bulbs. One side of the plate is covered with opaque material and the other with translucent material. Both surfaces are internally re... | 07/13/1976 |
| 3964700 | Airdrop canister An elongated, cylindrical case has an intermediate partition dividing it into a canister and a housing. A parachute is attached into the housing with deployment means releasable by a timer. After a predetermined time has elapsed, the timer withdraws radia... | 06/22/1976 |
| 3958840 | Flexible bearing having reinforcements A flexible bearing is constructed of layers of elastomer and rigid shims, alternately stacked and bonded together. At least some of the rigid shims are replaced with flexible reinforcements of refractory cloth or wire screen. The reinforcing material mini... | 05/25/1976 |
| 3952506 | Rocket motor construction A solid propellant grain for a rocket is encased in and bonded to an elastomeric insulation sheath. Stresses that would occur between the propellant grain and the rocket case as a result of differential expansion and contraction if the grain were bonded t... | 04/27/1976 |
| 3946672 | Rocket propelled projectile The forward end of a rocket motor is attached, by a threaded adapter, to a cylindrical housing that is in turn attached to an elongated tube, the opposite end of which is fitted with a releasable nose cone. The elongated tube is filled with a series of bo... | 03/30/1976 |
