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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 |
| 7419405 | Dehumidifier safety cut-off system The present invention relates to a dehumidifier safety cut-off system. This invention is an after-market safety accessory for existing dehumidifiers which operate through the use of a condensate-pump. The safety cut-off system would automatically shut down a dehumid... | 09/02/2008 |
| 7382269 | Mold and fungus growth warning apparatus and method An apparatus for monitoring environmental conditions favorable for mold, mildew and fungus growth includes a microprocessor having a data map, a temperature sensor attached to the microprocessor, a relative humidity sensor attached to the microprocessor, an indicato... | 06/03/2008 |
| 7351926 | Rotation-proof enclosure for pressure switch housing A housing for a pressure switch is coupled to a pipeline. The housing has a tubular body with an explosion-proof enclosure attached to the body with a retainer sleeve inserted through an opening in the enclosure and threaded into the body to secure the enclosure to ... | 04/01/2008 |
| 7145053 | Moisture indicator for a diaper A battery operated moisture indicator for selective attachment to an existing diaper worn by a baby, having an audible alarm and having a liquid crystal display bulb, for providing an audible alert and a visual alert, respectively, when the diaper has been wet by th... | 12/05/2006 |
| 7135118 | Method for treatment against corrosion and depositions in domestic supply water stallations The invention concerns a method for preventive treatment of corrosion, oxidation and/or depositions in domestic supply water distribution circuits, comprising steps which consist in: a diagnosis including an analysis of the state of corrosion, oxidation, depositions... | 11/14/2006 |
| 7131335 | Pressure sensor with barrier providing impending sensor failure indication A pressure transmitter for transfer of a pressure prevailing in a first medium onto a second medium, including a pressure chamber 4 in a platform 1, which chamber is separated from the first medium by means of a dividing membrane 2, wherein the ... | 11/07/2006 |
| 7120002 | Power distribution bus with protection and alarming Power distribution busses and methods are disclosed that provide flexible protection and alarming capabilities. Various embodiments provide interchangeability of fuses and circuit breakers within the same power distribution bus configuration. These various embodimen... | 10/10/2006 |
| 7112752 | System and method to delay activation of a powered device A system and method for delaying the activation of a powered device, such as a battery powered device. The activation of the device is triggered by contact with a particular environmental characteristic encountered by the device. For example, the system can be confi... | 09/26/2006 |
| 7111580 | Device for detecting the presence of a chemical contaminant The disclosure relates to a device for detecting the presence of a chemical contaminant. The device comprising a resilient indicator element which is biased into a first position and is anchored in the first position by means of a failure element. The failure elemen... | 09/26/2006 |
| 7084363 | Variable differential adjustor A variable differential adjustor for a fluid pressure-actuated switch, with the fluid, in the preferred form of the invention, being air. The restrictor has a restrictor housing with a fluid passage in which a restrictor plug, typically a set screw, is engaged. By j... | 08/01/2006 |
| 7082959 | Shutoff valve system with leak detector A pilot operated shutoff valve system with leak detector for automatically shutting off a water supply to appliances such as a clothes washing machine, dishwashing machine, sink, toilet, or refrigerator equipped with an ice maker, comprising a sealing member movable... | 08/01/2006 |
| 7071830 | Moisture sensor A sensor for indicating moisture, comprising a unit whose conductivity is dependent on the current moisture exposure and an electric circuit, the unit being included as a component in the electric circuit and the electric circuit being activable by applying an elect... | 07/04/2006 |
| 7010394 | Intelligent environmental sensor for irrigation systems The invention provides a regulator system for regulating the operation of an irrigation system which is responsive to user programmed information. It has a control element for issuing watering control signals to an irrigation system, having at least one of (i) a dur... | 03/07/2006 |
| 6977351 | Moisture absorptive rain sensor with sealed position sensing element for irrigation watering program interrupt A rain sensor for use with an irrigation control system includes a position sensing element. A moisture absorptive element is supported for receiving rainfall. An actuating element is mechanically connected to the moisture absorptive element for movement adjacent th... | 12/20/2005 |
| 6950032 | Apparatus and method for protection against appliance leaking A water protection system apparatus for detecting and stopping a flow of water which includes a power supply, a water ionization switch, and a controlled valve assembly. The water ionization switch selectively conducts electricity when exposed to water and includes ... | 09/27/2005 |
| 6853305 | Air-conduit condensation sensor A tape-drive condensation sensor includes a probe with first and second spaced-apart electrodes that define a passage for air flow within a pneumatic conduit. A voltage source is coupled between the electrodes and the voltage of the source and the spacing between th... | 02/08/2005 |
| 6846994 | System and method to delay closure of a normally closed electrical circuit A system and method are provided to delay closure of an electrical circuit of a battery-powered electrical device, intended to operate remotely in an environment in which the pH value changes from one value to another. Two electrical contacts of an electrical circui... | 01/25/2005 |
| 6787718 | Device, method, and system for detecting the presence of liquid in proximity to electronic components An elongated sensor is provided for detecting the presence of a liquid in an electronics system. The sensor includes an elongated sensor element having a pair of adjacent electrical conductors, and a liquid permeable material that when dry electrically insulates the... | 09/07/2004 |
| 6750773 | Liquid flow meter A liquid flow meter (50), including a microcontroller (60) and associated algorithm, monitors urine flow through a cartridge trap (20). Measuring the duration of such flow and the number of times the urinal is used will determine, in accordance ... | 06/15/2004 |
| 6731215 | Moisture monitoring system A leakage response system for an appliance includes a leakage sensor which is operative to change an electrical parameter upon contact by a conductive liquid, a controller circuit electrically coupled with the strip for generating an activation signal in response to... | 05/04/2004 |
| 6723932 | Water immersed electrical switch and method for preparation thereof A water-immersed switch which does not conduct electricity in the absence of a dielectric liquid, such as water, and which conducts electricity in the presence of the dielectric liquid. The water-immersed switch includes a modified copolymer containing acrylonitrile... | 04/20/2004 |
| 6683535 | Water detection system and method A water detection system for detecting water and activating an alarm is provided. The water detection system includes an alarm relay and a water sensor. The water sensor includes a solid state switching and amplifying circuit for detecting low levels of c... | 01/27/2004 |
| 6680618 | Leak sensing switch A low-cost leak sensor that prevents leakage current from flowing between electrodes when moisture is deposited. A leak sensor is formed on an insulating substrate. The leak sensor has a through hole having a pair of opposed walls with a predetermined spa... | 01/20/2004 |
| 6679101 | Device for detecting leakage in membranes A device for detecting leaks in membranes, etc., for liquid media, whereby the membrane is provided, over at least one partial area of its surface extension, with at least one electrical conductor that produces a change in a measurement signal of the elec... | 01/20/2004 |
| 6635834 | System and method to delay closure of a normally closed electrical circuit A system and method are provided to delay closure of an electrical circuit of a battery-powered electrical device, intended to operate remotely in an environment in which the pH value changes from one value to another. More specifically, two electrical co... | 10/21/2003 |
| 6580013 | Inexpensive diaper wetness monitoring system A wetness monitoring system for a disposable diaper includes an elongated compliant sensor installable within the front portion of the diaper and having an inner conductive layer, a hydrophilic porous middle layer containing a water-soluble ionizable salt... | 06/17/2003 |
| 6570109 | Quick shut-off extended range hygroscopic rain sensor for irrigation systems A micro-switch is mounted within a housing and is electrically connectable to an irrigation controller. The switch has a spring biased actuating lever pivotable between ON and OFF positions. A single disc made of a hygroscopic material is mounted within t... | 05/27/2003 |
| 6489895 | Fail-safe leak detection and flood prevention apparatus A fail-safe leak detection and flood prevention apparatus includes an induced current, transconductive darlington amplifier and tuned-frequency standing water detector mounted at a lowest point of a potential leak plane for sensing variations of standing ... | 12/03/2002 |
| 6337632 | Sump pump and moisture alarm A self-contained apparatus which will detect the presence of moisture at floor level--such as on a basement floor--or below floor level--such as the level of water in a sump. The apparatus is battery powered and foldable, with a pair of moisture sensing e... | 01/08/2002 |
| 6230838 | Rescue assist safety system The present invention is an electronic system for automatically rolling down power windows and unlatching power door locks of a motor vehicle in the event of an accident. The electronic system has a vehicle immersion detecting device for triggering an ope... | 05/15/2001 |
| 6091336 | Moisture detection apparatus A moisture detection apparatus for signaling to a caregiver that a diaper or other article of clothing worn by an infant or adult being cared for by the caregiver is wet and needs to be changed. The apparatus includes a liquid transfer component having a ... | 07/18/2000 |
| 6084520 | Leak collection and supply shut off system A new leak collection and supply shut off system for closing off the supply of water and energy to a water heater in the event of a leak. The inventive device is designed for use with a water heater that has a tank, a water inlet pipe, a water outlet pipe... | 07/04/2000 |
| 6024116 | Valve assembly and acuator operative for automatically shutting off water and gas supplies to a hot water heater upon detection of a water leak A valve assembly is operative for automatically shutting off both a water supply line and gas supply line to a gas-fired hot water vessel upon detection of water discharge, leak or overflow, from the water vessel. The valve assembly is connected in the wa... | 02/15/2000 |
| 6003536 | Automatic water shut-off valve An electrically actuated flow control device for use with an electrical household appliance includes a single body defining first and second flow passages. Inlet ends of the flow passages connect to pressurized sources of hot and cold water, and outlet en... | 12/21/1999 |
| 5992443 | Valve system A valve system for use in conjunction with a hot water heater where the water line to the hot water heater passes through the valve system which, when a leak is detected by an electrical sensor, causes a motor to drive a gear which moves a gear rack later... | 11/30/1999 |
| 5877689 | Leak detector A water appliance detection and cut off apparatus is provided including a water entry conduit for receiving water from a water source. A pan is provided having a bottom face and a lip coupled thereto and extending upwardly therefrom for defining an open t... | 03/02/1999 |
| 5857482 | System for control of fluid vessel overflows An overflow control system includes a vessel having a liquid input and output, the vessel having a top and bottom defined by the gravity vector. The system further includes a housing peripherally surrounding the vessel about all surfaces, other than the b... | 01/12/1999 |
| 5790036 | Sensor material for use in detection of electrically conductive fluids Apparatus for detecting the presence of electrically conductive fluids, including urine and other body fluids such as exudate from wounds, includes a pair of spaced-apart electrodes covered by absorbent material, together with a housing containing a signa... | 08/04/1998 |
| 5777210 | Oil quality sensor measuring bead volume Method and apparatus for determining deterioration of e.g. lubricating oil by measuring the contraction of a polymeric matrix (support) holding charged ionic groups. The support contracts due to oil quality degradation. The expansion/contraction is detect... | 07/07/1998 |
| 5719552 | Automatic trailer illuminating lighting control system A system and method for illuminating an area proximate a trailer, such as a boat or snowmobile trailer. At least one area illuminating light is connected to an area illuminating lighting control member. The area illuminating lighting control member receiv... | 02/17/1998 |
