US Patent No: 5,497,067

Number of patents in Portfolio can not be more than 2000

Battery charger with timer-controlled charging, shut-off and reset operations




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A timer control circuit is coupled with a battery charger to control on a timed basis the charging, shut-off and reset operations of the battery charger. The timer control circuit includes a timer, a d.c. power supply connected to the timer, and an auxiliary relay connected to the timer and connected between a battery and the battery charger. The timer is operable to repetitively and automatically turn on for a first preset timing period, turn off for a second preset timing period, and then turn on again for the first preset timing period. During each second preset timing period, when the timer is turned off, the auxiliary relay is normally deactuated so as to open a feedback path from the battery to the battery charger permitting the battery charger to reset in preparation for initiating a new charging cycle. Then, during each first preset timing period, when the timer is turned on, the auxiliary relay is actuated so as to close the feedback path causing the battery charger to initiate the new charging cycle.

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Inventor Name Address # of filed Patents Total Citations
Shaw, Donald E 9206 Peppertree Cir., Wichita, KS 67226 2 19

Cited Art Landscape

Patent Info (Count) # Cites Year
Minicam Research Corporation (1)
4,499,415 Battery rapid charging circuit 2 1982
Other [Check patent profile for assignment information] (2)
4,568,869 Method of and device for reducing charging time of batteries and increasing power and torque of electric motors 6 1984
4,575,670 Battery charging system 11 1984

Patent Citation Ranking

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8,037,228 Bridge device with page-access based processor interface 2 2008
D588985 Battery charger 5 2007
6,208,116 Method for charging batteries, particularly in cordless communication devices 2 2000
7,570,022 Variable battery refresh charging cycles 1 2005
8,598,850 Devices and methods for optimizing rechargeable battery life 0 2012
8,653,789 Method and apparatus for recharging batteries in a more efficient manner 0 2012
Other [Check patent profile for assignment information] (2)
7,573,212 Automatic power control module for battery powered devices 1 2004
8,508,080 Automatic power control module for battery powered devices 0 2009

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