Self-regulated battery charger

Claim 1

CHARGING MEANS FOR DELIVERING CHARGING CURRENT TO A LOAD, SAID LOAD HAVING A PREDETERMINED RATED TERMINAL VOLTAGE IN A FULLY CHARGED CONDITION AND A LESSER TERMINAL VOLTAGE WHEN IN A DISCHARGED CONDITION, SAID CHARGING MEANS COMPRISING A POWER SOURCE, CIRCUIT MEANS CONNECTED WITH SAID POWER SOURCE FOR DERIVING A VOLTAGE STANDARD THEREFROM, SILICON CONTROLLED RECTIFIER MEANS CONNECTED IN SERIES WITH SAID POWER SOURCE AND SAID LOAD, SAID CONTROLLED RECTIFIER MEANS INCLUDING A GATE TERMINAL, AND CONDUCTOR MEANS CONNECTING SAID GATE TERMINAL WITH SAID CIRCUIT MEANS WHEREBY A BIAS POTENTIAL IS APPLIED TO SAID GATE TERMINAL, SAID BIAS POTENTIAL BEING SELECTED SUCH THAT SAID CONTROLLED RECTIFIER MEANS WILL PREVENT THE FLOW OF CHARGING CURRENT TO SAID LOAD UPON THE ADVENT OF RATED TERMINAL VOLTAGE AT SAID LOAD; WHEREIN SAID CIRCUIT MEANS COMPRISES A FILTER CAPACITOR AND RECTIFIER MEANS CONNECTED IN SERIES ACROSS SAID POWER SOURCE, A VOLTAGE DIVIDER COMPRISING FIRST AND SECOND SERIES CONNECTED RESISTANCE MEANS CONNECTED ACROSS SAID FILTER CAPACITOR, AND A VOLTAGE REGULATOR MEANS CONNECTED ACROSS SAID SECOND RESISTANCE MEANS, SAID SECOND RESISTANCE MEANS HAVING A VARIABLE CENTER TAP THEREIN CONNECTED WITH SAID CONDUCTOR MEANS, WHEREBY A SELECTIVELY VARIABLE BIAS POTENTIAL IS PROVIDED FOR SAID GATE TERMINAL OF SAID CONTROLLED RECTIFIER MEANS.