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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 |
| 6324974 | Treatment of solutions A fountain solution for a lithographic press is treated by applying a succession of doses of electromagnetic radiation at increasing frequencies, from audio to radio frequencies, via an antenna that is immersed in the fountain solution. The conductive ele... | 12/04/2001 |
| 6073306 | Safety device The invention relates to a safety device, and in particular to a safety device for a sliding panel, such as a patio door. The safety device includes an abutment, a carrier member for the abutment, a mounting arm for the carrier member, a pivot for the mounting... | 06/13/2000 |
| 6057771 | Fluid delivery apparatus A line, especially for delivery of liquefied gas at ambient temperature, has two solenoid valves connected in series with an intermediate section of the line between them. In normal operation when both valves are closed, the isolated intermediate section ... | 05/02/2000 |
| 6032664 | Pressure display for self contained breathing apparatus A self contained breathing apparatus has a display of air pressure within the face mask in the field of vision of the user of the breathing apparatus. The display is four lights that indicate the four quarter-tanks of pressure, and the lights change to in... | 03/07/2000 |
| 6021828 | Trim saw with waste removal blades A trim saw is mounted in conjunction with a hogger, or device for reducing scrap to particles, or saw dust. The hogger is made up of a any desired number of units that will reduce scrap to sawdust. Each unit has a pair of oscillator plates that hold a pai... | 02/08/2000 |
| 5992770 | Burner for grill and method for making same A burner for a gas grill is inexpensive and durable. The burner may be made of an inexpensive sheet steel, but the steel is fully porcelainized or otherwise treated to resist corrosion. The complete coverage of the porcelain is accomplished by making the ... | 11/30/1999 |
| 5947885 | Method and apparatus for folding sheet materials with tessellated patterns A variety of sheet materials can be tessellation folded with an infinite variety of patterns in a one-step folding process by placing the sheet material against a pallet having flat rigid segments and flexible hinges, exerting forces against the pallet in... | 09/07/1999 |
| 5938437 | Bony anchor positioner A rigid buccally positioned bar, placed above the upper teeth and stabilized anteriorly by a connector to a protruding bony anchor carries a variety of force systems to facilitate tooth/teeth movement in all three spatial directions. The bar can be stabil... | 08/17/1999 |
| 5926844 | External soccer shin guard strap An adjustable, resealable and reusable elastic strap worn on the outside of a soccer sock and used for locking the shin guard in its intended protective position. This external shin guard strap includes a piece of woven, braided or knitted elastic materia... | 07/27/1999 |
| 5909179 | Automatic reset for personal alert safety system Light is directed towards at least one eye of a user of a personal alert safety system (PASS), and the reflected light is sensed. When the eye blinks, there is an interruption of the reflected light signal indicating that the user is conscious. Electronic... | 06/01/1999 |
| 5894856 | Seismically triggered valve A seismically triggered valve is designed to shut off gas supply during an earthquake. A valve member is pivoted within a valve body, the valve member being mechanically movable to the open position. A magnet is fixed to the valve member, and a ferromagne... | 04/20/1999 |
| 5893384 | Seismically triggered valve with manual override A seismically triggered valve is designed to shut off gas supply during an earthquake. A valve member is pivoted within a valve body, the valve member being mechanically movable to the open position and movable by gravity to the closed position. A magnet ... | 04/13/1999 |
| 5893613 | Method of making a dust mop A dust mop head is formed of a single sheet as a backing for pile yarns, with flaps integrally formed, the flaps having slits therein. A mop frame has inwardly directed tongues, and the flaps wrap around the frame so the tongues extend through the slits t... | 04/13/1999 |
| 5887854 | In-place vehicle servicing system An in-place automotive vehicle servicing system for servicing vehicles while in a parking lot or the like utilizes a servicing vehicle carrying a vehicle lifting apparatus. The vehicle lifting apparatus has a telescoping central beam with two pivotal cros... | 03/30/1999 |
| 5885684 | Rug having relief pattern, and method for forming A rug or mat having a pattern in relief is formed by printing a pattern on a rug having face yarns of a thermoplastic fiber, and subsequently heating the printed rug. The ink is applied by silk-screen, stencil or the like to apply enough ink to raise the ... | 03/23/1999 |
| 5884694 | Bathroom dehumidifier method and apparatus A dehumidifier for use in a bathroom or the like utilizes the cold surface of a heat exchanger to condense moisture, and the hot surface of a heat exchanger to warm the air after the moisture is removed. The cold surface is provided by having the cold wat... | 03/23/1999 |
| 5858739 | Gas sensor A method for determining the presence of a first gas in a second gas uses a gas sensor made up of at least two pairs of electrodes, each pair of electrodes having different spacing between the electrodes. The electrodes of the gas sensor have surfaces tha... | 01/12/1999 |
| 5856780 | Semiconductor sensors and method for detecting fires using such sensors A fire detector, for connection in a fire protection/alarm system, comprises an array of sensors, or a single sensor, of the semiconductor resistor type impregnated with a noble metal. The detector is responsive, by way of a decrease in its resistance, to... | 01/05/1999 |
| 5853291 | Subperiosteal bone anchor A subperiosteal bone anchor has a base that is thin and moldable so the base can be conformed to bone where it is to be placed. The base is formed as a plurality of arms, and leaves with central holes in the leaves so screws can urge the leaves against th... | 12/29/1998 |
| 5852754 | Pressurized housing for surveillance camera A housing for a surveillance camera is generally dome shaped, the camera being movable therein, and the interior of the housing is under pressure to exclude contaminants. The housing is made up of an assembly plate having a central opening to receive a lo... | 12/22/1998 |
| 5829146 | Automotive measuring device hanger A measuring device hanger is engageable with one of the standard holes in a vehicle body, and suspends a conventional measuring device therefrom. A head is small enough to pass through the smallest of holes in a vehicle body; and, the head is expansible t... | 11/03/1998 |
| 5814281 | Resistive gas sensing A resistive gas sensor has a porous semiconducting oxide body in which the pore surfaces are decorated with a precious metal. The sensor operates at ambient temperatures for detection and measurement of target gases, especially carbon monoxide. The porous... | 09/29/1998 |
| 5809602 | Window scraper A window scraper has a drum that mounts four blades on its periphery, the blades extending generally tangentially so the sharp edges project beyond the drum. A shroud covers the drum and blades, and the shroud defines an opening where the blades project t... | 09/22/1998 |
| 5811662 | Resistive gas sensing, especially for detection of ozone A resistive gas sensor having a WO3 sensing element is especially useful for detection of low concentrations (1 ppm or less) of ozone in air. The WO3 element is a porous layer with a 30-60% porosity and less than 50 micrometer thick,... | 09/22/1998 |
| 5803088 | Heel cup for examination table A heel cup for a medical examination table has a solid bottom, and a heel receiving area that comfortably cradles the patient's heel. The rear portion to receive the heel is spherically shaped so the patient's heel can rotate as required and maintain the ... | 09/08/1998 |
| 5801153 | Method of enhancing the antimicrobial properties of antibacterial antibiotics to massively control and prevent bacterial, fungal, and viral diseases in plants A method for controlling plant diseases utilizes a mixture of antibiotics and food additives or food preservatives. The mixture is sprayed on the plants twice per week for three weeks, then once every three weeks. Such a regimen has been found to cure pla... | 09/01/1998 |
| 5789659 | Monitoring of multiple-electrode gas sensors A gas sensor, suitable for use under non-steady state conditions, has a gas-sensitive resistor with pairs of electrodes which either have different spacings between the electrodes of a pair, or comprise a pair at the active surface and further pairs burie... | 08/04/1998 |
| 5789700 | Grounding device with mounting brackets A grounding device for positively grounding a broken electrical conductor has a primary body having a mounting post extending therefrom. A bracket is fixed to the pole carrying the conductor, and a clamp connects the mounting post to the bracket. To raise... | 08/04/1998 |
| 5771739 | Automatic chain lock An automatic chain lock allows successive pulls on a vehicle on a straightening apparatus without manipulation of the chain lock between actuations of the fluid cylinder. A pair of gates provides a ratchet arrangement for the chain, the lower gate holding... | 06/30/1998 |
| 5755307 | Hydraulic earth leveling machine A hydraulic earth leveling machine has a pair of legs, and cross pieces to connect the legs together. The hydraulic earth leveling machine is attached to a ladder by clamps on the cross pieces. The legs of the hydraulic earth leveling machine telescope; a... | 05/26/1998 |
| 5749123 | Safety device This invention relates to a safety device, and in particular to a safety device for a sliding panel, such as a patio door. The safety device includes an abutment (20), a carrier (21), for the abutment (20), a mounting arm (22) for the carrier (21), a pivo... | 05/12/1998 |
| 5740578 | Dust mop A dust mop head is formed of a single sheet as a backing for pile yarns, with flaps integrally formed, the flaps having slits therein. A mop frame has inwardly directed tongues, and the flaps wrap around the frame so the tongues extend through the slits t... | 04/21/1998 |
| 5738514 | Resiliently expandable orthodontic device An orthodontic appliance has two telescoping cylinders having springs therein to urge the cylinders apart. The outer cylinder is then slidably inserted into a third cylinder. The outer ends of the cylinders are attached to a patient's teeth so the springs... | 04/14/1998 |
| 5718217 | Fireplace safety device A safety device for fireplaces provides a non-flammable apron adjacent to the fireplace opening, the apron being sloped up in a direction away from the fireplace. Thus, logs or embers discharged from the fireplace will engage the apron, and will dissipate... | 02/17/1998 |
| 5717391 | Traffic event recording method and apparatus A system for determining the condition of a traffic controlling semaphore has an audio sensor mounted in the vicinity of an intersection so the sound level is monitored at all times. A computer is placed into the semaphore controller, and the computer rec... | 02/10/1998 |
| 5704077 | Bidet fittings for water closet Bidet fittings can be attached to an existing water closet to provide a combination water closet and bidet. A nozzle is placed at the front of the bowl of the water closet, and a delivery pipe extends around the bowl, under the rim. At the rear of the bow... | 01/06/1998 |
| 5702324 | Wrist extensor exercise device A wrist exerciser has a rigid platform to receive a person's wrist, and a fabric support to hold the wrist to the rigid platform. A hinged arm is pivoted to the rigid platform and is fixed to the fabric support at the palm of the hand, so that as the hand... | 12/30/1997 |
| 5690061 | Water heater with expansion tank A hot water heater has an expansion tank below the water tank and aligned with the water tank, so both water tank and expansion tank occupy the same floor space. The expansion tank is connected to the water tank by a pipe, so expansion due to heating of t... | 11/25/1997 |
| 5687443 | Motorized janitorial cart with accessories A janitorial cart is small, and narrow enough for use indoors, and will pass through conventional-width doorways. The cart is electrically powered, and the batteries are mounted very low so the lower center of gravity will stabilize the cart. The steering... | 11/18/1997 |
| 5678703 | Finial adapter for curtain rods A large diameter curtain rod has a small, lamp shade finial fixed to the ends through an adapter. The adapter may have a screw with a wood-screw thread on one end and a machine-screw thread on the other. The wood-screw thread is inserted into the rod, and... | 10/21/1997 |
