Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7612523 | Method of recovering voltage of a primary cell and its device A method of recovering voltage of a primary cell and its device. The method of steps of reading a cell to obtain start voltage, capacitance and number of the cells to be recovered, of imposing sine curve impulse once every 1-3 second on the positive pole of the cell... | 11/03/2009 |
| 7576512 | Secondary battery charging system capable of preventing drop of charged electric power A secondary battery charging system, mounted on a vehicle having an internal combustion engine, has a secondary battery, a fuel cell, a fuel storage unit, and a fuel supply controller. In order to start the engine of the vehicle, the engine requires the electric pow... | 08/18/2009 |
| 7432684 | Mobile equipment with electric power supply control function An apparatus for controlling the supply of electric power to mobile equipment has a battery checker that checks a remaining battery-level of at least one of plural batteries including main battery. The main battery is installed in a body, and the other batteries are... | 10/07/2008 |
| 7199553 | Battery pack apparatus and cooling device thereof A battery pack apparatus is configured with a battery pack composed of a plurality of rechargeable batteries arranged in parallel with cooling medium passages formed therebetween, and a cross flow fan which faces a distribution space formed adjacent to one side of t... | 04/03/2007 |
| 6804098 | Charge/discharge protection circuit for a rechargeable battery The invention refers to a charge/discharge protection circuit for a rechargeable battery being able to differentiate between a temporary overvoltage on the charge/discharge terminals and a permanent overvoltage and in the last case for security reasons to permanentl... | 10/12/2004 |
| 6744234 | Preliminary charging state apparatus, program and method The present invention provides an electrical apparatus, program and method for a user to display a preliminary charging state in a battery. In one aspect, the present invention provides an electrical apparatus that is capable of receiving a battery for supplying ele... | 06/01/2004 |
| 6657408 | Air conditioner In an air conditioner having a control unit receiving a power from a switching power supply, a supplied voltage for the control unit is reduced to a possible lowest voltage for the unit to operate. This arrangement provides the air conditioner with less e... | 12/02/2003 |
| 6242886 | Apparatus and method for automatic recovery of sulfated lead acid batteries Apparatus and method for automatic recovery of sulfated lead acid batteries rely on monitoring battery voltage, current and internal resistance during battery charging. The lead acid battery is recovered for usage by measuring the internal resistance to s... | 06/05/2001 |
| 6184649 | Power converter with desulfation mode A power converter supplies a charging current to a rechargeable battery responsive to a control module. The control module includes a microcontroller, a memory coupled to the microcontroller and power converter code. The power converter code causes the mi... | 02/06/2001 |
| 6184650 | Apparatus for charging and desulfating lead-acid batteries Apparatus for charging and desulfating lead-acid batteries provides a DC electrical charging current to the battery terminals to charge the battery to a fully charged voltage during a bulk charge mode. When the battery reaches a fully charged voltage, the... | 02/06/2001 |
| 5963008 | Method and apparatus for electroacoustic battery sonication Electroacoustic battery sonication rehabilitates a battery by decreasing metallic shorting across battery elements through sonication. Sonication may be produced by application of an electrical signal of selected frequency to the terminals of a battery, t... | 10/05/1999 |
| 5932988 | Apparatus and methods for manufacturing electrodes Electrodes are cured through application of modulated electrical signals. In preferred embodiments the signal comprises pulsed currents, and in particularly preferred embodiments the signal comprises a train of both forward and reversed pulses, with modul... | 08/03/1999 |
| 5677612 | Lead-acid battery desulfator/rejuvenator A lead-acid (SLI) battery desulfator which is powered by the batteries wh it is conditioning when a motor associated with the batteries is off. The desulfator activates whenever an alternator supplies charge to the battery then deactivates itself upon ex... | 10/14/1997 |
| 5646505 | Method of charging a battery using asymmetrical current A method of charging a discharged battery by creating a level direct current carrier and a riding alternating current charging vector which rides on the level direct current, the alternating current having a repeating waveform comprising two phase displac... | 07/08/1997 |
| 5617002 | Method of and apparatus for charging nonaqueous electrolytic battery A charging method of and a charging apparatus for charging a nonaqueous electrolytic battery such as a lithium primary battery including a positive pole active material, negative pole active material of a lightweight metal and nonaqueous electrolyte. The ... | 04/01/1997 |
| 5523667 | Alkaline battery charger and method of operating same Apparatus and methods for recharging various types of battery cells are enclosed involving alternating periods of charging and discharging of the cells, a reference charge cut-off voltage, a comparator for comparing cell voltage with cut-off voltage, and ... | 06/04/1996 |
| 5493196 | Battery charger for charging alkaline zinc/manganese dioxide cells A battery charger for charging alkaline zinc/manganese dioxide cells is disclosed. The battery charger contains means for producing a direct current voltage at 25 degrees centigrade of from about 1.6 to about 1.7 volt as well as means for individually and... | 02/20/1996 |
| 5463304 | Life extending circuit for storage batteries A low cost, relatively inexpensive and highly reliable tuned resonant circuit and method for prolonging the life of storage batteries of the type that contain a liquid electrolyte and are exposed to extensive periods of non-use. The resonant circuit is po... | 10/31/1995 |
| 5105142 | Cell discharging circuit for a fuel cell A discharging circuit can be made compact by forming a discharging path for the fuel cell via a fixed resistor. Even if the operation of a fuel cell is interrupted and/or a control power source for supplying electric power to a controlling circuit is inte... | 04/14/1992 |
| 4644244 | Battery conditioner A depolarizing device conditioning for small batteries includes an open ended housing for receiving and holding a large battery to be used as a source of depolarizing current, a carrier, for receiving a small battery to be depolarized, configured to be sl... | 02/17/1987 |
| 4629963 | Dry cell battery re-activator A dry cell battery re-activator comprising means for producing uni-directional pulses and inductive coupling means whereby the pulses are applied to a closed circuit comprising an inductive element and a battery to be re-activated. The battery to be re-ac... | 12/16/1986 |
| 4394741 | Battery monitoring system A microprocessor based electric vehicle traction battery monitoring system evaluates the state of charge, interfaces with a traction motor control system, and controls recharging. The state of charge is evaluated during the first part of discharge by inte... | 07/19/1983 |
