Bizarre Patents
A sealed crustless sandwich for providing a convenient sandwich without an outer crust which can be stored for long periods of time without a central filling from leaking outwardly.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8022675 | Detection of the supply state of a load supplied by a variable voltage A method and a circuit for detecting the state of supply of a load by a variable voltage, including measuring the difference between values representative of the variable supply voltage and of a voltage across the load. ... | 09/20/2011 |
| 7339354 | Rechargeable battery charging method and apparatus A method and an apparatus for charging a lithium-ion based rechargeable battery in a short time is provided. A terminal voltage of the rechargeable battery is compared with a predetermined first set voltage V1 while charging the rechargeable battery with a co... | 03/04/2008 |
| 7286330 | Power supply device and method having a spark prevention function Disclosed is power supply device and method having a spark prevention function. The power supply device having a spark prevention function includes output connectors to which an external device is coupled to be supplied with electric power; and an output controller ... | 10/23/2007 |
| 7282891 | Method for charging a battery A method and apparatus for charging a rechargeable battery (110) that takes into account the use patterns of the particular battery. A user may only discharge the battery a little and recharge it frequently which is a low capacity high life cycle use pattern,... | 10/16/2007 |
| 7148657 | Apparatus and method for regulating and monitoring a chargeable device with minimal operator intervention A method and apparatus that enables the load applied to a battery to be regulated. Regulation of the load to the battery is based upon a load request from which a set-point is derived in a microprocessor. From this set-point, voltage is either allowed to pass or not... | 12/12/2006 |
| 6344733 | Portable jump-starting battery pack with charge monitoring system A battery pack includes a lead-acid battery and a charger port and an electronic switch connected between the two, the switch being controlled by a microcontroller which is connected to each of the battery and the charger port for separately monitoring th... | 02/05/2002 |
| 6286109 | Method and apparatus for reducing heat generation in a portable computer A method and apparatus for controlling heat generation within a battery-powered portable computer. One aspect is directed to a computer including a battery, a battery charging circuit operatively connected to the battery to charge the battery at a chargin... | 09/04/2001 |
| 6097172 | Method and apparatus for determining when to terminate charging of a battery An apparatus and method for charging a battery are described in a technique wherein charge pulses are followed by discharge pulses and then first rest periods and other discharge pulses followed by second rest periods. Selected ones of the second rest per... | 08/01/2000 |
| 5929606 | Ripple-suppressed converting battery module A universal battery pack which contains an integral DC-DC switching power converter, with an asymmetric ripple-suppression topology which suppresses ripple at the power output terminals during discharging.... | 07/27/1999 |
| 5861733 | Battery charger In a battery charger in which an output voltage and an output current from the battery charger are compared with a reference voltage, respectively, and an error voltage is fed back, so that, in an initial charging period, constant-current charging is perf... | 01/19/1999 |
| 5631542 | Method for controlling the strength of a charging current In a method for controlling the strength of a charging current when charging a battery by means of an alternating voltage source, the rectified voltage of the alternating voltage source is fed to the battery via a phase control circuit with variable trigg... | 05/20/1997 |
| 5396164 | Battery charging apparatus capable of completely charging secondary cell in safety Battery charging apparatus is provided between a power source and a secondary cell which charges the secondary cell by direct current (DC) power. The apparatus includes a power generation circuit for generating the DC power, a pulse generation circuit for... | 03/07/1995 |
| 5337228 | Differential charging circuit A differential charging circuit comprising an active switch device controlled by a differential trigger circuit and a current impedance device to charge a storage battery through an intermediate storage capacitor. A capacitor and commutating inductance ar... | 08/09/1994 |
| 5214369 | Universal battery charger A battery charger having an input receptacle, and different AC electrical cords pluggable therein for adapting the charger to a variety of different AC distribution systems. Portions of rectified signals are coupled by a triggerable switching device to a ... | 05/25/1993 |
| 4695784 | Voltage and current limiting phase-triggered battery charger with continuous optimization of charging rate A battery charging circuit includes a silicon controlled rectifier full wave bridge that has its input connected across a conventional 60 hertz alternating current power line. The output of the bridge provides 120 hertz pulsating direct current to the bat... | 09/22/1987 |
| 4658199 | Current regulating circuit A current pulse producing, current regulating circuit includes a SCR arranged to pass a current pulse once each positive going half wave input supplied thereto. The SCR is controlled by a control circuit free of current feedback and timing circuitry and r... | 04/14/1987 |
| 4476425 | Battery charger A battery charger can charge a battery from a primary power source having a peak voltage exceeding the maximum battery voltage independently producible by the battery. The charger has output terminals, a switch and a feedback circuit. The output terminals... | 10/09/1984 |
| 4301398 | Method and apparatus for controlling a resonant power module A method and apparatus for controlling a resonant power module comprising a resonant power circuit which is coupled to a load. First and second switching elements are coupled to the resonant circuit for alternately supplying a flow of current. Trigger gen... | 11/17/1981 |
| 4242627 | Battery charger A battery charging system for charging a battery from an AC source, including control rectifier means for rectifying the charging current, a pulse generator for triggering the rectifier to control the transmission of current to the battery, phase control ... | 12/30/1980 |
| 4131841 | Battery charger with automatic change from current to voltage mode control An improved battery charger having a current limiting transformer for supplying a charging current. The transformer includes primary and secondary coils wound about a core and has a shunt path for a portion of the magnetic flux induced by the voltage appe... | 12/26/1978 |
| 4087733 | Battery charger A battery charger in which full-wave rectified current is supplied to a battery through a silicon controlled rectifier. By controlling the gating of the SCR the average charging current is controlled. An oscillator circuit formed by a unijunction transist... | 05/02/1978 |
| 3987354 | Regulating circuit A regulator circuit provides a constant direct current to a load, for example, a string of batteries. The current is regulated to be independent of the load and supply voltage variations and can be operated under open or short circuited load conditions fo... | 10/19/1976 |
| 3970913 | State-of-charge indicator for voltage-regulated battery charger A signaling circuit is connected across the output terminals of a voltage-regulated battery charger that also has a.c. input terminals, an SCR connected between one input terminal and an output terminal, and a regulating circuit connected with the gate of... | 07/20/1976 |
