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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 |
| 7786624 | Power control device A power control device prevents unauthorized and unwanted use of electrical devices by locking the plug of the electrical device in the power control device, when the current flowing through the power control device is stopped. The device includes a switch, moveable... | 08/31/2010 |
| 7391134 | Electrical safety lockout mechanism for power tools and other hazardous machinery An improved electrical lockout mechanism includes a first connection means to a power source, and a second connection means to the power input terminal of the machine being protected. The machine being protected includes a manually-operated ON/OFF switch. A switchin... | 06/24/2008 |
| 7274866 | Power tool and method for controlling a power tool A power tool is disclosed comprising a controller for controlling at least one operating parameter, a motor for driving a tool, at least three switching elements which are coupled to the controller, and a speed sensor for monitoring the speed of the motor to generat... | 09/25/2007 |
| 7231262 | Apparatus for monitoring and controlling use of equipment Apparatus is provided for controlling and limiting the amount of time that a television, computer game, or other electrical appliance can be utilized. The apparatus is inserted in the electrical cord leading to the electrical appliance and is programmable to limit t... | 06/12/2007 |
| 7154380 | Power distribution and timing device A power distribution and timing device (PDTD) for controlling power supply to controlled device(s). This invention includes: an outlet; an alarm clock; a backup battery; a keyboard; a tamper switch; a display for showing day, time, modes of operation, programming st... | 12/26/2006 |
| 7075195 | Electrical safety lockout mechanism for power tools and other hazardous machinery An improved electrical lockout mechanism includes a first connection means to a power source, and a second connection means to a power input terminal of the machine being protected. The machine includes a manually-operated ON/OFF switch. A switching element, which i... | 07/11/2006 |
| 7071819 | Remote control lock operation system for vehicles A remote control lock operation system for a vehicle capable of unlocking a mechanical locking mechanism for mechanically disabling traveling of the vehicle by a infrared signal, without using the key. Components of the system include a handheld remote control trans... | 07/04/2006 |
| 6996750 | Methods and apparatus for computer bus error termination In a computer system having a bus architecture, a system and process for isolating a device from a bus without interrupting system operation is described, the system including bus interface logic monitoring and reporting activity on the bus, isolation control logic ... | 02/07/2006 |
| 6967445 | Circuit continuity and function monitor A circuit to monitor electrical continuity through a light bulb when the light bulb is switched off, and to monitor proper functioning of the light bulb when the bulb is switched on. The circuit comprises a LED, a relay and a latching circuit portion, the latching c... | 11/22/2005 |
| 6462431 | Remote locking release device and method A remote locking release device in a bicycle wheel locking apparatus, including: a remote controller; a light signal receiving unit for generating a locking release signal by a locking release requirement signal received from the remote controller; a posi... | 10/08/2002 |
| 6232676 | Safety power on/off switching for hot pluggable cards Disclosed is structure and method for supplying and cutting off power to a removable card component of an electrical device, without interfering with supply of power to other components of the device (including other card components), so that the single c... | 05/15/2001 |
| 5886426 | Power switch locking device A power switch locking device for controlling the on/off function of a soft touch type power switch is disclosed. In general, the output of the power switch is provided to an input of a microcontroller that switches on/off the main power switch or relay o... | 03/23/1999 |
| 5734206 | Security power interrupt A security electrical power interrupt apparatus prevents usage of an electrical appliance such as an electric stove, or other electrically operated device. The apparatus includes a relay controlled by a micro-processor based programmable controller. The d... | 03/31/1998 |
| 5691874 | Power switch control apparatus of equipment When the user depresses a soft key SW in an on-state of a door switch DSW in which a door is closed, a transistor Tr1 is turned on, a transistor Tr4 is turned on, a relay RL1 is turned on, and an AC power source is supplied to an image forming apparatus. ... | 11/25/1997 |
| 5592032 | Security power interrupt A security electrical interrupt device for preventing unauthorized usage of an electrical appliance such as an electric stove, while retaining operation of auxiliary electrical equipment such as the lights and an electrical clock. The device comprises a r... | 01/07/1997 |
| 5554895 | Electronic latching circuit for momentary contact switches A switch circuit for activating and deactivating a motor vehicle cruise control includes a 555 model timer integrated circuit which has a trigger terminal, a reset terminal, a threshold terminal, a control voltage terminal and an output terminal. A substa... | 09/10/1996 |
| 5530230 | Variable password safety interlock system for microwave ovens and other appliances A new variable password safety interlock system for microwave ovens and other computerized or electrical appliance allows the user to dynamically and automatically generate a new password immediately prior to each use. The variable password comprises some... | 06/25/1996 |
| 5506455 | Electrical appliance with reduced electric field emissions An electrical appliance comprises a power supply cable (70) having a first conductor (200) surrounded by a second conductor (210) for supplying electrical power to the appliance from a domestic electricity mains supply, and a connector (490) connected to ... | 04/09/1996 |
| 5432387 | Power source voltage supply controlling apparatus A switching means is provided in a power source line for supplying the A.C. power source of a main power source circuit. A lock switch is separately provided. In the normal state, the lock switch is in a locked off state, thereby controlling the on-off op... | 07/11/1995 |
| 5418404 | Data processing device and plug-in package In a data processing device, when exchanging a plug-in package with another without breaking the power to be supplied to the data processing device, a package removing lever is equipped with a locking piece. The lever does not move and the package hence c... | 05/23/1995 |
| 5272385 | Photographic and X-ray film protection system An electronic device comprising a light sensor, a plurality of inputs and outputs, and an integrated circuit provides discrimination from logic input detection signals to generate output signals. The input detection signals are received from slotted opto-... | 12/21/1993 |
| 5231310 | Electrical and electronic appliance lock An electronic appliance lock can be used on televisions and other appliances for which use control is sought. In one embodiment, the lock sits atop a television set or is manufactured integrally with the television. In another embodiment the lock is made ... | 07/27/1993 |
| 5196731 | Power on/off circuit with lock function A power on/off circuit with a lock function includes a momentary type main switch connected to ground, a two-circuit two-contact lock switch coupled to, a switching state holding circuit, a load and a power supply. One of the switching circuits in the loc... | 03/23/1993 |
| 5191231 | Timer for electrical appliances The present invention provides an improved timer device for programming pre-selected time periods during which an electrical appliance can be actuated or de-actuated at the selection of the user, or during which the appliance is in a non-operational state... | 03/02/1993 |
| 5126643 | Control system for hole cutting machines A control system for an electric-motor-driven power tool, comprising solenoid operated switching contacts in a mains supply circuit for controlling the supply of mains current to the motor, a latching circuit for normally holding said switching contacts c... | 06/30/1992 |
| 4820934 | Dispenser control for dishwashers A control circuit for dispensing detergent and a wetting agent in a dishwasher is provided in which a single triac can be utilized to selectively energize either the detergent dispenser operator or the wetting agent dispenser operator by connecting the tw... | 04/11/1989 |
| 4772977 | System for protection of electrical machines against damage from residual voltage effects A system for use with electrical machines allows fast transfers to be made from one power source to another or fast reconnections to be made to a momentarily interrupted power source without subjecting the machines to unsafe voltage levels. The system sho... | 09/20/1988 |
| 4727263 | Electromotive setting device In an electromotive control device having an end disconnect switch, two circular conductive paths are arranged on an insulating support, at least one of said paths being less than an entire circle. Wiper contacts which connect the conductive paths are ele... | 02/23/1988 |
| 4714976 | Multipole breaking device with remote control A remotely controlled circuit breaker or switch comprises two breaking poles adjoining a remote control unit with an electromagnet, and a toggle for manual operation of the contacts. The remote control unit comprises a selector switch for switching into t... | 12/22/1987 |
| 4710841 | System for production of induction machines against damage from residual voltage effects Protection of induction motors and generators is provided to allow rapid reclosure of the power supply or fast transfer from one power supply to an alternate supply. A switching sequence is disclosed in which motor stator windings are short circuited imme... | 12/01/1987 |
| 4689492 | Switching circuit A switching circuit for turning on and off an electronic instrument, an electric lamp, or other electrically powered electric or electronic circuits, by means of a single switch, and which is constructed so that when the switch is closed momentarily and o... | 08/25/1987 |
| 4611204 | Arrangement for an electromechanical space switching network This invention is a cost efficient network arrangement for a space switching network for high voltage applications. This arrangement minimizes the number of control signal leads for a multistage switching network. If a switching network has N stages, then... | 09/09/1986 |
| 4603370 | Power-saving relay circuit A power-saving relay circuit for reducing power consumption from a power supply comprises a relay including a selectively energizable relay coil, a plurality of movable contactors, and a plurality of fixed contacts including first and second fixed contact... | 07/29/1986 |
| 4602165 | Switch assembly for maintaining an electric time switch clock synchronized with real time An automatic electric switch assembly with associated timers re-synchronizes a time clock with real time after a power interruption.... | 07/22/1986 |
| 4570109 | Irradiation device An irradiation device including a series arrangement of an ultraviolet radiation source (5), a first switch (3) and a second switch (4). Under normal conditions the radiation source (5) is switched on and off by the first switch (3). The second switch (4)... | 02/11/1986 |
| 4559456 | Battery powered electric appliance A portable type electric appliance powered by incorporated main and reserve batteries. The batteries are connected to an electric load selectively by means of a switching device including a main switch for connecting the main battery to the load and a sub... | 12/17/1985 |
| 4539453 | Control circuit for a microwave oven A control circuit for a microwave oven with a mechanical switch locking assembly, wherein a cooking start switch is available to turn on after closing a door and is turned off when the door is opened. The control circuit includes a relay for connecting a ... | 09/03/1985 |
| 4507703 | System for error-protected operation of multipanel, power distribution network switches An arrangement for generating in each switching panel of a multipanel switching facility of an electrical power distribution network a digital operating-state image derived from command inputs and switching position signals. The digital operating state im... | 03/26/1985 |
| 4418289 | Two stage starter drive system A two stage positive shift starter drive system for an internal combustion engine is disclosed. A pair of electrical switches are sequentially actuated by an actuator solenoid engaging the starter drive's pinion gear with the engine's ring gear. The first... | 11/29/1983 |
| 4401958 | Electromagnetic trigger switch Apparatus is disclosed for controlling the operation of electrically operated equipment, such as power tools and the like. The apparatus includes circuit connectors, including first and second spaced terminals, in which the first terminal is connected to ... | 08/30/1983 |
