Battery charge system
First Claim
1. A battery charge system, comprisinga magnet adapted to hold a load,a battery,an electrical power source,circuitry operably interconnecting the magnet, battery and power source, and including an SCR,a power transformer deriving power from the source and operable, when connected with the battery, for charging the battery,a control transformer deriving power from the source,valve means interposed between the power transformer and the battery,means for sensing minimum voltage level of the battery,means for sensing maximum voltage of the battery, andmeans controlled by the minimum voltage sensing means and operative for turning on the SCR and thereby connecting the power source and the battery, and controlled by the maximum voltage sensing means and operative for turning off the SCR and thereby disconnecting the power source from the battery.
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Accused Products
Abstract
A battery charge system for a transfer magnet (heretofore generally known as a lift magnet) and for a chuck control. In the case of the transfer magnet, the battery provides constant power, while in the case of the chuck control, it serves as a standby power. The charge system is automatically connected when the charge on the battery reaches a predetermined minimum, and disconnected when it is charged to a predetermined maximum. The battery in each case is connected with the usual utility source of AC, and upon the voltage of the battery reaching the levels mentioned, the AC source is respectively connected or disconnected.
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Citations
10 Claims
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1. A battery charge system, comprising
a magnet adapted to hold a load, a battery, an electrical power source, circuitry operably interconnecting the magnet, battery and power source, and including an SCR, a power transformer deriving power from the source and operable, when connected with the battery, for charging the battery, a control transformer deriving power from the source, valve means interposed between the power transformer and the battery, means for sensing minimum voltage level of the battery, means for sensing maximum voltage of the battery, and means controlled by the minimum voltage sensing means and operative for turning on the SCR and thereby connecting the power source and the battery, and controlled by the maximum voltage sensing means and operative for turning off the SCR and thereby disconnecting the power source from the battery.
Specification