Claims
- 1. In a gas burning fireplace having a burner for producing a flame, a rod in the vicinity of the burner, a gap between the burner and the rod and wherein the flame is produced in said gap, apparatus for monitoring the presence of a flame comprising battery means for applying a DC voltage derived from said battery between the rod and the burner, and electronic circuit means for sensing a DC current between the rod and the burner.
- 2. Apparatus as in claim 1 wherein said flame is a pilot flame, said burner is a pilot burner, said electronic circuit means are electronic logic circuit means and said battery provides power to said electronic logic circuit means.
- 3. Apparatus as in claim 2 wherein said gas burning fireplace includes a thermopile for generating a control voltage when it is heated and transmission means for applying the control voltage to valve control means for holding open a gas flow valve and wherein said electronic circuit means operates to cause an interruption in said transmission means when there is no current between the rod and the pilot burner.
- 4. Apparatus as in claim 3 wherein said fireplace further comprises generating means for producing a high voltage, conductor means for applying the high voltage to the rod and switch means for selectively enabling a connection between said generating means and said rod via said conductor.
- 5. Apparatus as in claim 4 further comprising electronic timing means for causing said interruption to be effective for a predetermined time interval.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 07/995,361, filed Dec. 12, 1992, now abandoned.
US Referenced Citations (4)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
995361 |
Dec 1992 |
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