Carbon monoxide safety system
Patent 5576739 Issued on November 19, 1996. Estimated Expiration Date: 
August 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 24, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3609732 3733595 3826180 3909816 Gas analysis device Sensing system for automatically opening garage doors Home security and garage door operator system Environmental control system and method Transmitter and receiver for controlling the coding in a transmitter and receiver Building intelligence system InventorAssigneeApplicationNo. 295519 filed on 08/24/1994US Classes:340/3.4, Quiescent340/3.44, Control to correct fault340/632, Gas432/37Analyzer or composition sensor of work, work atmosphere or exhaust gasExaminersPrimary: Bowler, Alyssa H.Assistant: Rinehart, Mark H. Attorney, Agent or FirmInternational ClassesG05B 023/02G08B 017/10 F27D 021/04 AbstractDescribed is a system for measuring noxious gas concentration in an affected space and for controlling the device producing the noxious gas or for decreasing the concentration of the gas in the affected space. The invention is particularly described in relation to measuring carbon monoxide concentration in an automobile garage and for controlling the garage door opener circuit to open the garage door in response to a preselected concentration of carbon monoxide. Also described in particular is a system for deactivating a furnace operating circuit to turn off the furnace in the event of excessive carbon monoxide concentration.Other References
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