Apparatus for selectively supplying electrical pulses op different widths to a plurality of load devices

Claim 1

IN APPARATUS FOR SELECTIVELY PROVIDING ELECTRICAL PULSES OF PREDETERMINED DURATIONS TO A PLURALITY OF ELECTRICAL LOAD DEVICES, THE COMBINATION OF A PLURALITY OF LOAD CIRCUIT PORTIONS EACH HAVING A FIRST TERMINAL AND A SECOND TERMINAL, SAID FIRST TERMINALS BEING CONNECTED TO A COMMON JUNCTION; RELAY CIRCUIT MEANS HAVING AN INPUT TERMINAL ADAPTED TO RECEIVE ELECTRICAL POWER AND AN OUTPUT TERMINAL CONNECTED TO SAID COMMON JUNCTION FOR PROVIDING PULSES OF ELECTRICAL POWER TO SAID LOAD CIRCUIT PORTIONS, SAID RELAY CIRCUIT MEANS HAVING A FIRST CONTROL TERMINAL ADAPTED TO RECEIVE SUCCESSIVE START PULSES, AND A SECOND CONTROL TERMINAL TO RECEIVE SUCCESSIVE STOP PULSES, THE PULSES OF ELECTRICAL POWER PROVIDED BY SAID RELAY CIRCUIT MEANS BEING INITIATED BY A START PULSE RECEIVED BY SAID FIRST CONTROL TERMINAL AND TERMINATED BY A STOP PULSE RECEIVED BY SAID SECOND CONTROL TERMINAL; A PLURALITY OF CAPACITIVE CIRCUIT UNITS; SWITCHING CIRCUIT MEANS OPERATIVELY CONNECTED TO SELECT SAID LOAD CIRCUIT PORTIONS ONE AT A TIME AND, WITH EACH SUCH SELECTION, TO SELECT A CORRESPONDING ONE OF SAID CAPACITIVE CIRCUIT UNITS; CHARGING CIRCUIT MEANS INCLUDING SAID SWITCHING CIRCUIT MEANS AND OPERATIVELY CONNECTED TO CHARGE EACH SELECTED CAPACITIVE CIRCUIT UNIT TO A PREDETERMINED VOLTAGE LEVEL IN A PREDETERMINED PERIOD OF TIME; PULSING CIRCUIT MEANS CONNECTED TO SAID CHARGING CIRCUIT MEANS AND SAID SECOND TERMINAL TO SUPPLY A STOP PULSE TO SUCH SECOND TERMINAL WHEN THE SELECTED ONE OF SAID CAPACITIVE CIRCUIT UNITS HAS BEEN CHARGED TO ITS PREDETERMINED VOLTAGE LEVEL; AND MEANS FOR PREVENTING SAID CAPACITIVE CIRCUIT UNITS FROM ACCUMULATING ANY MATERIAL CHARGE UNTIL A START PULSE IS RECEIVED BY SAID FIRST CONTROL TERMINAL OF SAID RELAY CIRCUIT MEANS.