Circuit breaker panels with alarm system

• US 4,706,073 A
• Filed: 07/31/1985
• Issued: 11/10/1987
• Est. Priority Date: 09/25/1984
• Status: Expired due to Fees

• Current Assignee: Light Circuit Breaker, Inc.
• Original Assignee: Oscar Vila Masot
• Inventors: Vila Masot, Oscar
• Primary Examiner(s): Rowland, James L.
• Assistant Examiner(s): Hofsass, Jeffery A.
• Application Number:
  US06/760,925
• Time in Patent Office: 832 Days
• Field of Search: 340/638, 340/639, 340/644, 361/114, 361/115, 361/344, 361/347, 361/349, 361/350, 361/357, 337/241, 337/242, 337/206, 337/265, 337/266, 337/332, 337/376
• US Class Current: 340/639
• CPC Class Codes: G08B 21/185 Electrical failure alarms
• CPC Class Codes: H01H 2071/048 containing non-mechanical switch position sensor, e.g. HALL sensor
• CPC Class Codes: H01H 71/0271 Mounting several complete assembled circuit breakers together interconnected mechanisms H01H71/1009
• CPC Class Codes: H01H 71/04 Means for indicating condition of the switching device by means of an auxiliary contact H01H71/46
• CPC Class Codes: H01H 9/168 making use of an electromagnetic wave communication

Abstract

An alarm system used in conjunction with a circuit breaker panel box indicating the presence of an overload condition. At least one sensor is provided in proximity with the circuit breaker box but is not physically connected thereto. This sensor senses various parameters which are inherent in an overload condition or which are produced by various circuitry connected to the circuit breaker which are enabled during an overload condition. This alarm system is set by closing the door of the circuit breaker panel box.

Claims

1. An alarm system used in conjunction with a conventional thermoelectrically or magnetically actuated device for sensing the occurrence of an overload condition or a short circuit condition between a line current and a load, said device provided in electrical panel devices, each panel box provided with a movable door and a fixed frame, the system comprising:

a movable switch provided in said thermoelectrically or magnetically actuated device, said movable switch movable from an ON position to a TRIPPED position when said device senses a circuit overload or short circuit condition;

alarm set-reset switch provided in said door and said frame of said electrical panel box, said door provided with a movable contact and said frame provided with a fixed contact engaged by said movable contact when said door is closed;

sensing means provided in proximity with device but physically and electrically disconnected from said device for sensing the actual physical movement of said switch responsive to the occurrence of an overload or short circuit condition as opposed to the result of said movement such as noise or vibration; and

alarm means electrically connected to said sensing means for indicating the presence of an overload in a short circuit condition.

2. The alarm system in accordance with claim 1, wherein said alarm means is provided on the frame of said electrical panel box.

3. The alarm system in accordance with claim 1, wherein said alarm means is provided at a location remote from said electrical panel box.

4. The alarm system in accordance with claim 1, wherein said thermoelectrically or magnetically actuated device is a circuit breaker.

5. The alarm system in accordance with claim 1, wherein said thermoelectrically actuated device is a fuse.

6. The alarm system in accordance with claim 1, further including:

a permanent magnet connected to or embedded in said movable switch;

wherein said sensing means senses the movement of said movable switch to the TRIPPED position, thereby enabling said alarm means to indicate the presence of an overload or short circuit condition.

7. The alarm system in accordance with claim 1, further including:

a permanent magnet connected to or embedded in said movable switch;

wherein said sensing means senses the movement of said movable switch to the TRIPPED position, thereby enabling said alarm means to indicate the presence of an overload or short circuit condition.

8. The alarm system in accordance with claim 6, wherein said sensing means is a Hall effect sensor.

9. The alarm system in accordance with claim 7, wherein said sensing means is a Hall effect sensor.

10. The alarm system in accordance with claim 6, wherein said sensing means is a magneto-resistor.

11. The alarm system in accordance with claim 7, wherein said sensing means is a magneto-resistor.

12. The alarm system in accordance with claim 1, further including:

metallic material connected to or embedded in said movable switch;

wherein said sensing means senses the movement of said movable switch to the TRIPPRD position, thereby enabling said alarm means to indicate the presence of an overload or short circuit condition.

13. The alarm system in accordance with claim 1, further including:

metallic material connected to or embedded in said movable switch;

wherein said sensing means senses the movement of said movable switch to the TRIPPED position, thereby enabling said alarm means to indicate the presence of an overload or short circuit condition.

14. The alarm system in accordance with claim 12, wherein said sensing means is an RF tank circuit.

15. The alarm system in accordance with claim 13, wherein said sensing means is an RF tank circuit.

16. The alarm system in accordance with claim 12, wherein said sensing means is a variable reluctance sensor.

17. The alarm system in accordance with claim 13, wherein said sensing means is a variable reluctance sensor.

18. The alarm system in accordance with claim 1, wherein said sensing means is connected to said movable door.

19. The alarm system in accordance with claim 1, wherein said sensing means is connected to said fixed frame.

20. The alarm system in accordance with claim 1, wherein said sensing means includes:

a source of radiant energy provided in said panel box and direct toward said movable switch; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said movable switch to receive radiant energy when said movable switch moves to said TRIPPED position.

21. The alarm system in accordance with claim 1, further wherein said sensing means includes:

a source of radiant energy provided in said panel box and directed toward said movable switch; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said movable switch to receive radiant energy when said movable switch is in the ON position.

22. The alarm system in accordance with claim 1, wherein said sensing means includes:

a source of radiant energy provided in said panel box and directed toward said movable switch; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said movable switch to receive radiant energy when said movable switch moves to said TRIPPED position.

23. The alarm system in accordance with claim 1, wherein said sensing means includes:

a source of radiant energy provided in said panel box and directed toward said movable switch; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said movable switch to receive radiant energy when said movable switch is in the ON position.

24. The alarm system in accordance with claim 1, further including:

a plurality of aligned movable switches, each of said movable switches moved to a tripped position when a circuit overload or short circuit is sensed by the line associated with that particular switch;

a radiant energy source provided in said panel box and directed toward aligned movable switches; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said aligned movable switches to receive radiant energy when all of said aligned movable switches are in a non-tripped position.

25. The alarm system in accordance with claim 24, wherein said radiant energy detector does not receive radiant energy when one of said aligned movable switches moves to a tripped position, thereby activating said alarm means.

26. The alarm system in accordance with claim 1, further including:

a plurality of aligned movable switches, each of said movable switches moved to a tripped position when a circuit overload or short circuit is sensed by the line associated with that particular switch;

a radiant energy source provided in said panel box and directed toward said aligned movable switches; and

a radiant energy detector provided in said panel box aligned with said source of radiant energy and said aligned movable switches to receive radiant energy when all of aligned movable switches are in a non-tripped position.

27. The alarm system in accordance with claim 26, wherein said radiant energy detector does not receive radiant energy when one of said aligned movable switches moves to a tripped position, thereby activating said alarm means.