Safety control system responsive to carbon monoxide smoke and th

Details Safety control system responsive to carbon monoxide smoke and th Safety control system responsive to carbon monoxide smoke and th

1996-10-22

1997-12-30

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307117, H01H 4722

Patent

active

057037493

ABSTRACT:
Apparatus is disclosed for preventing injury to an occupant of an enclosed space as the result of exposure to a noxious gas. The apparatus shuts a source of noxious gases, when an unsafe ambient condition is sensed. More particularly, the unsafe condition is typically the presence of the noxious gas in the enclosed space. In some forms of the invention the apparatus also includes structure for latching that upon sensing an unsafe condition continues to send a signal to shut off the source of noxious gas. Some forms of the apparatus may further include an override for the latching aspect of the structure. The override may be a manually operated push button that operates a relay. The apparatus for shutting down the source of noxious gases is a relay in some forms of the invention and that relay may be normally closed in some embodiments.

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