Safety control system responsive to carbon monoxide smoke and the like
First Claim
1. Apparatus for preventing injury from a noxious gas which comprises:
- a shut off circuit for interrupting a source of electricity to an electrical appliance and interrupting a source of gas to a gas appliance;
a controller for controlling said shut off circuit, said controller having first and second states;
a sensor for sensing the presence of a noxious gas, said sensor being coupled to said controller to cause a change from said first state to said second state therein when the presence of a noxious gas exists, said change to said second state therein causing said shut off circuit to interrupt the source of electricity and the source of gas.
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Accused Products
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.
32 Citations
12 Claims
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1. Apparatus for preventing injury from a noxious gas which comprises:
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a shut off circuit for interrupting a source of electricity to an electrical appliance and interrupting a source of gas to a gas appliance; a controller for controlling said shut off circuit, said controller having first and second states; a sensor for sensing the presence of a noxious gas, said sensor being coupled to said controller to cause a change from said first state to said second state therein when the presence of a noxious gas exists, said change to said second state therein causing said shut off circuit to interrupt the source of electricity and the source of gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus for preventing injury from a noxious gas which comprises:
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a shut off circuit for interrupting a source of electricity to an electrical appliance that is the source of the noxious gas and a source of gas to a gas appliance that is the source of the noxious gas; a controller for controlling sad shut off circuit, said controller having first and second states; a sensor for sensing the presence of a noxious gas, said sensor being coupled to said controller to cause a change from said first state to said second state therein when the presence of a noxious gas exists, said change to said second state therein causing said shut off circuit to interrupt the source of electricity and the source of gas.
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Specification