Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
A power supply system for supplying direct current to a load, said system comprising: three sets of batteries, with each set of batteries having an ampere/hour rating of at least ten times the value of the load current; circuitry connecting each of the three sets of batteries to the load; three sets of switching means for opening and closing the respective circuits between the load and each set of batteries; and control means for alternating each set of switches in open and closed position, wherein the closed position has a time duration about twice that of the open position, and the switches are switched open and closed in cyclic, predetermined order with the first switch closing at about the same time the second switch opens, the second switch closing about the same time the third switch opens, the third switch closing about the same time the first switch opens, and then repeating the cycle.
Claim 2
Dependent Claim
154 words
A power supply system for supplying direct current to a load, said system comprising: three sets of batteries, with each set of batteries having an ampere/hour rating of at least ten times the value of the load current; circuitry connecting each of the three sets of batteries to the load; three sets of switching means for opening and closing the respective circuits between the load and each set of batteries; and control means for alternating each set of switches in open and closed position, wherein the closed position has a time duration about twice that of the open position, and the switches are switched open and closed in cyclic, predetermined order with the first switch closing at about the same time the second switch opens, the second switch closing about the same time the third switch opens, the third switch closing about the same time the first switch opens, and then repeating the cycle.
Claim 3
Dependent Claim
29 words
A power supply system in accordance with claim 1, wherein each switch is in the closed position in each cycle for a duration of about 4 to 10 seconds.
Claim 4
Dependent Claim
58 words
A power supply system in accordance with claim 1, wherein means are provided for delaying the opening of each switch during each cycle so that each switch opens about 1/2 to 1.25 seconds following the closing of the corresponding switch in the cycle, whereby at three distinct spaced time periods during the cycle, all three switches are closed.
Claim 5
Dependent Claim
84 words
A power supply system in accordance with claim 3, wherein each of the sets of switching means comprises a relay, and the control means comprises a control logic unit which supplies cyclic energizing pulses to three current drivers which in turn supplies energizing current to a mutually respective relay, with said current drivers being provided with means for delaying the opening of the respective switches for about 1/2 to 1.25 seconds after the pulses from the control unit to the current drivers are terminated.