LAMP OUTAGE DETECTOR
First Claim
Patent Images
1. A LAMP OUTAGE DETECTOR FOR PROVIDING A SIGNAL WHEN ANY ONE OF A GROUP OF LAMPS NOT PASS CURRENT WHEN ELECTRICAL POWER IS APPLIED COMPRISING;
- A FIRST GROUP OF LAMPS;
A SECOND GROUP OF LAMPS;
A SOURCE OF DIRECT CURRENT POWER CONNECTED TO SAID GROUPS BY RESPECTIVE SWITCHES;
A FIRST SAMPLING RESISTOR CONNECTED IN SERIES WITH THE SOURCE OF POWER AND THE FIRST GROUP OF LAMPS;
A SECOND SAMPLING RESISTOR CONNECTED IN SERIES WITH THE SOURCE OF POWER AND THE SECOND GROUP OF LAMPS;
A SEMICONDUCTOR DIODE COUPLED TO EACH SAMPLING RESISTOR BY A COUPLING CIRCUIT WHICH APPLIES A REVERSE BIAS TO THE DIODE;
AN ALTERNATING CURRENT OSCILLATOR CONNECTED TO EACH OF SAID DIODES FOR APPLYING NEGATIVE PULSES THERETO, SAID PULSES NORMALLY HAVING AMPLITUDES WHICH ARE LESS THAN THE REVERSE BIAS ON THE DIODE;
A LATCH CIRCUIT COUPED TO SAID DIODES FOR ACTUATION WHEN A LAMP IN ANY ONE OF SAID GROUPS FAILS TO PASS CURRENT WHEN ITS SWITCH IS CLOSED;
AND IN INDICATOR MEANS CONNECTED TO SAID LATCH CIRCUIT FOR GIVING AN INDICATION WHEN SAID LATCH CIRCUIT IS OPERATED.
3 Assignments
0 Petitions
Accused Products
8 Citations
1 Claim
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1. A LAMP OUTAGE DETECTOR FOR PROVIDING A SIGNAL WHEN ANY ONE OF A GROUP OF LAMPS NOT PASS CURRENT WHEN ELECTRICAL POWER IS APPLIED COMPRISING;
- A FIRST GROUP OF LAMPS;
A SECOND GROUP OF LAMPS;
A SOURCE OF DIRECT CURRENT POWER CONNECTED TO SAID GROUPS BY RESPECTIVE SWITCHES;
A FIRST SAMPLING RESISTOR CONNECTED IN SERIES WITH THE SOURCE OF POWER AND THE FIRST GROUP OF LAMPS;
A SECOND SAMPLING RESISTOR CONNECTED IN SERIES WITH THE SOURCE OF POWER AND THE SECOND GROUP OF LAMPS;
A SEMICONDUCTOR DIODE COUPLED TO EACH SAMPLING RESISTOR BY A COUPLING CIRCUIT WHICH APPLIES A REVERSE BIAS TO THE DIODE;
AN ALTERNATING CURRENT OSCILLATOR CONNECTED TO EACH OF SAID DIODES FOR APPLYING NEGATIVE PULSES THERETO, SAID PULSES NORMALLY HAVING AMPLITUDES WHICH ARE LESS THAN THE REVERSE BIAS ON THE DIODE;
A LATCH CIRCUIT COUPED TO SAID DIODES FOR ACTUATION WHEN A LAMP IN ANY ONE OF SAID GROUPS FAILS TO PASS CURRENT WHEN ITS SWITCH IS CLOSED;
AND IN INDICATOR MEANS CONNECTED TO SAID LATCH CIRCUIT FOR GIVING AN INDICATION WHEN SAID LATCH CIRCUIT IS OPERATED.
- A FIRST GROUP OF LAMPS;
Specification
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Current AssigneeCooper Industries, Inc. (Eaton Corporation PLC.)
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Original AssigneeCarl E. Atkins
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InventorsAtkins, Carl E.
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Application NumberUS04/522,618Time in Patent Office1,079 DaysField of SearchUS Class Current340/642CPC Class CodesB60Q 11/005 for lighting devices, e.g. ...
