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 |
| 7439457 | Apparatus for determining relative density of produce using weighing and size measuring The higher the reading of relative density, liquid weight per unit volume, of pieces of produce such as fruits, the juicier the piece of produce is. By comparing a number of pieces of produce of the same type and species and ranking them, the juiciest pieces of prod... | 10/21/2008 |
| 7290447 | Density measuring apparatus containing a densimeter and a method of using the same in a pipeline A densimeter contains an inlet pipe section, a second pipe section joined to the downstream end of the inlet pipe section, and an outlet pipe section joined to the downstream end of the second pipe section. The inlet and outlet pipe sections are constrained by a sup... | 11/06/2007 |
| 7236252 | System and apparatus for measuring displacements in electro-active materials A device designed to apply uniaxial pressure to the surface of an electro-active material while simultaneously applying a current to the material under controlled temperature conditions and then measuring the displacement of the material by means of a laser interfer... | 06/26/2007 |
| 7215806 | Adaptive iterative bone correction in computerized tomography A method of performing bone correction on a computerized tomography (CT) image includes the steps of: A. generating a reconstructed CT image of a bone-containing portion of a patient's body, the reconstructed CT image including a b... | 05/08/2007 |
| 7209240 | System and apparatus for measuring displacements in electro-active materials A specialized containment cell with optically transparent apertures, in conjunction with a laser interferometer system provides the means for non-contact displacement measurements of electro-active (piezoelectric and electrostrictive) materials to be performed under... | 04/24/2007 |
| 7136450 | Method of and system for adaptive scatter correction in multi-energy computed tomography Method of and system for adaptive scatter correction in the absence of scatter detectors in multi-energy computed tomography are provided, wherein input projection data acquired using at least two x-ray spectra for scanned objects may include a set of low energy pro... | 11/14/2006 |
| 7123685 | Device and method for analyzing fat of meat The invention relates to continuously determining the fat content of meat. A conveyor belt is used on which the pieces of meat to be examined are advanced past a radiation source serving as a fat analyzing means. The attenuation of an X-ray beam emitted from the rad... | 10/17/2006 |
| 7123024 | Device comprising a microwave resonator for or on a spinner preparation machine A device is disclosed, comprising a microwave resonator, for or on a spinner preparation machine with drawing gear (2) for drawing fiber material (FB), in particular a carding, drawing or combing machine, whereby the resonator (30) is embodied for conn... | 10/17/2006 |
| 6990848 | System and method for determining material properties of samples A method is provided for nondestructively determining a material property of a porous sample. A first vessel is evacuated to a sub-atmospheric pressure, while a test pressure, greater than the sub-atmospheric pressure, is established in a second vessel containing th... | 01/31/2006 |
| 6935166 | Measurement of moisture of potting soil The invention relates to a method and apparatus for determining the moisture content of bulk material, in particular potting soil, wherein the volume of a quantity of bulk material is determined, the weight of the quantity of bulk material is determined, the specifi... | 08/30/2005 |
| 6917924 | Automated package shipping machine A system for accepting and storing items for subsequent pickup by a commercial carrier includes a storage area which is defined by an outer housing, and a customer interface area that includes a weighing unit and a unit, such as a magnetic card reader, for accepting... | 07/12/2005 |
| 6759601 | Check weighing apparatus and method A check weighing system is provided which can check weigh samples (1) on a production line. The check weighing system comprises a magnet (13) for creating a static magnetic field over an interrogation zone for creating a net magnetisation within a samp... | 07/06/2004 |
| 6705153 | Monitoring liquid characteristics including quality control A drilling mud monitoring system includes a single measurement chamber which is filled with a predetermined quantity of drilling mud. The chamber is weighed to provide a value representative of the density of the drilling mud. The time needed for the chamber to drai... | 03/16/2004 |
| 6644344 | Method and apparatus for metering a flow rate of a fluid A method and apparatus for measuring the flow rate of a fluid based on the fluid weight. A container is provided between a fluid source and a fluid removal system. A valve is arranged between the fluid source and the container, to control the admitting of... | 11/11/2003 |
| 6637265 | Apparatus for measuring physical properties of matter The invention determines density of a sample while the sample is immersed in a gaseous medium having variable density. The apparatus includes a chamber for containing the gaseous medium and the sample, means for selectively varying the density of the gase... | 10/28/2003 |
| 6609423 | System for content analysis of comestible products using volumetric determination A system that performs content analysis on comestible products using volumetric determination with a single-chamber technique in a mass production environment. The content value determination system includes a conveyor system, a system for weighing the co... | 08/26/2003 |
| 6474143 | Automatically monitoring density and viscosity of a liquid A drilling mud monitoring system includes a single measurement chamber which is filled with a predetermined quantity of drilling mud. The chamber is weighed to provide a value representative of the density of the drilling mud. The time needed for the cham... | 11/05/2002 |
| 6210727 | Method and means of controlling a food extruder as a function of bulk density of the extruded product A bulk density sampling method and device whereby formed product is flowed through a vertically disposed passage of pre-determined size. The passage is temporarily obstructed to collect and weigh a known volume of product upon which to base a calculation ... | 04/03/2001 |
| 6079122 | Weighing dryer A dryer is provided which is adapted to receive and dry polymeric material. The dryer comprises a support structure, a drying hopper assembly, a polymeric material supply device and a controller. The drying hopper assembly includes a drying hopper having ... | 06/27/2000 |
| 6076400 | Apparatus and method for classifying objects in computed tomography data using density dependent mass thresholds A method and apparatus for detecting objects in computed tomography (CT) data are disclosed. Sheet-shaped objects such as sheet explosives can be detected by analyzing a neighborhood of voxels surrounding a test voxel. If the density of the test voxel is ... | 06/20/2000 |
| 5869763 | Method for measuring mass change using a quartz crystal microbalance A quartz crystal resonator is excited in two different modes at the same time such that the mass change and the temperature change can be measured independently. In using such a quartz crystal the change in mass can be calculated accurately and in real ti... | 02/09/1999 |
| 5858791 | Method and device for the continuous measurement of variations in the overall saturation of a sample with incompressible immiscible fluids Saturation variations are obtained by displacing a first fluid (for example water) that initially saturates a sample (1) coated with resin (2) by injecting therein, through a first end plate or cap (3) and by means of a pump (7), a second fluid (for examp... | 01/12/1999 |
| 5840042 | Method of predicting body composition in prepubertal children infected with human immunodenficiency virus A method for predicting fat free mass (FFM) and total body water (TBW) of a prepubertal child infected with human immunodeficiency virus (HIV) comprises the steps of measuring a child's height, measuring the child's total body resistance, and predicting f... | 11/24/1998 |
| 5799596 | Ashing furnace and method A furnace comprises an enclosure, a hearth plate within the enclosure for supporting combustible material, a first heater element adjacent the hearth plate for initial combustion of the combustible material, a filter disposed above the hearth plate for fi... | 09/01/1998 |
| 5760293 | Method and apparatus for measuring envelope and bulk densities A compaction device for determining envelope and bulk densities of sample materials. The device uses a rotating sample cylinder and a plunger positioned within the cylinder. The force on the plunger is measured as the plunger advances in the cylinder. The... | 06/02/1998 |
| 5703278 | Pressurized fluid density balance A conventional fluid density balance beam measurement instrument used for measuring fluid density at atmospheric pressure is converted for use to measure fluid density at super-atmospheric pressure. The conversion is made without modifying the structure o... | 12/30/1997 |
| 5608157 | Method and apparatus for measuring envelope density An apparatus and method for measuring the volume and calculating the envelope density of an object of known weight. The apparatus has a hollow sample cylinder of known interior diameter mounted to a motor for rotation about its horizontal axis. A dry flow... | 03/04/1997 |
| 5606126 | Apparatus and a method for automatically measuring the density of an object Apparatus for automatically measuring the density an object which comprises a first weighing device for weighing the object in a first medium which is dry, a second weighing device for weighing an object in a second medium which is wet and a robotic devic... | 02/25/1997 |
| 5595189 | Methods and apparatus for measuring body composition A system for measuring body fat percentage is disclosed. The system relies upon the measurement of a subject's weight in two gases of different densities. The difference in weight, along with the difference in atmospheric density, is used to determine the... | 01/21/1997 |
| 5576499 | Measuring and monitoring the size of particulate material The apparatus and method for measuring and monitoring the characteristic diameter of a flowing particulate material comprises: a chamber having a particle size measurement outlet of known dimensions through which some or all of the flowing material passes... | 11/19/1996 |
| 5563384 | Bulk density sampler apparatus Improved bulk density sampler is provided for continuous sampling of material flowing in a material processing stream which includes a sampling assembly including a receptacle of known volume mounted on and secured to a load cell configured to selectively... | 10/08/1996 |
| 5447063 | Liquid density monitoring apparatus A liquid bulk density monitoring apparatus which is particularly suitable for monitoring suspended sediment levels has a plummet suspended from one end of a balance beam and submerged in a vessel containing a liquid to be monitored. A sensor detects tilti... | 09/05/1995 |
| 5435182 | Method and apparatus for determining at least one physical parameter of accumulator electrode plates A method for determining at least one physical parameter of accumulator electrode plates, such as the true plate thickness Pd, the apparent density Ds of the active material, the true density Dw of the active material, the... | 07/25/1995 |
| 5423216 | Apparatus for automatically determining bulk specific gravity of powdery product An apparatus which permits continuous automatic determination of the bulk specific gravity of a powdery sample and highly precise measurement thereof. The apparatus comprises a robot 3 transporting a container 2 filled with a powdery sample; a funnel 4 pr... | 06/13/1995 |
| 5410914 | Measuring device for density of liquid or high-temperature melt without influence of surface tension The measuring device has bobs 10, 17 suspended from a weight 12 with wires 11, 16. The hook 13 of the weight 12 is hung from a suspensor thread 15 extending downwards from a balance 14. The weight 12 may be omitted by using the upper bob 10 for dead weigh... | 05/02/1995 |
| 5383349 | Densitometer A fluid densitometer is constructed using loudspeaker technology. The loudspeaker diaphragm carries a fluid sample chamber. The increased mass loading causes a shift in resonant frequency of the loudspeaker when driven in positive feedback. With suitable ... | 01/24/1995 |
| 5353960 | Gravimetric metering apparatus for pourable materials An apparatus for continuous gravimetric metering of pourable material includes a housing having arranged therein a rotor. The material is supplied to pockets of the rotor through a charging inlet and blown out of the pockets at a discharging outlet arrang... | 10/11/1994 |
| 5157968 | Apparatus for measuring the specific gravity, weight, level, and/or volume of a liquid in a container Apparatus for measuring the specific gravity, weight, level, and/or volume of a liquid in a container includes two load cells supported at the upper end of the container, a first body of known cross-sectional area extending through the interior of the con... | 10/27/1992 |
| 5094786 | Method and apparatus for determination of ingredients of tablets A tablet determining method and an apparatus therefor capable of accurately determining ingredients of a multi-layer tablet without breaking the tablet. A multi-layer tablet is lighted from light sources, an area of the side surface of the tablet on which... | 03/10/1992 |
| 5052405 | Method and apparatus for measuring the density of an object including a living being A method and apparatus is provided for measuring the volume and density of an object, including a living being, which avoids the necessity of immersing the subject in a liquid medium. Where the subject is a living being, the percentage of body fat may rea... | 10/01/1991 |