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Class Information
Number: 137/78.4
Name: Fluid handling > Ambient condition change responsive > Burner gas cutoff
Description: Apparatus in which flow of flammable gas to a burner is stopped in response to a sensed environmental extinguishing action to the flame of the burner.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7199721 |
Alarm shut off system |
Apr. 3, 2007 |
| 6543743 |
Gas control valve |
Apr. 8, 2003 |
| 6269829 |
Integrated gas meter |
Aug. 7, 2001 |
| 6199573 |
Gas flow arrestor |
Mar. 13, 2001 |
| 6170509 |
Safety valve system |
Jan. 9, 2001 |
| 6000390 |
Control mechanism with gas safety valve for a gas range |
Dec. 14, 1999 |
| 5908980 |
Integrated safety control system for user's gas facility and gas leakage recognizing method |
Jun. 1, 1999 |
| 5730170 |
Emergency gas or fuel shut-off device |
Mar. 24, 1998 |
| 5722448 |
Gas line automatic cut off valve |
Mar. 3, 1998 |
| 5503549 |
Ultra low power valve for the control of gas flow |
Apr. 2, 1996 |
| 5468142 |
Gas light control apparatus |
Nov. 21, 1995 |
| 5419358 |
Gas monitoring system for a boiler |
May. 30, 1995 |
| 4974624 |
Gas shut-off device |
Dec. 4, 1990 |
| 4787410 |
Gas shut-off system |
Nov. 29, 1988 |
| 4549717 |
Heat responsive valve |
Oct. 29, 1985 |
| 4349042 |
Fluid shut-off device |
Sep. 14, 1982 |
| 4263928 |
Fuel security device |
Apr. 28, 1981 |
| 4262687 |
Electromagnetic valve security device for fuel supplies |
Apr. 21, 1981 |
| 4223692 |
Recreational vehicle safety system |
Sep. 23, 1980 |
| 4207912 |
Emergency shut-off valve |
Jun. 17, 1980 |
| 3955186 |
Character image generation apparatus and CRT phototypesetting system |
May. 4, 1976 |
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