Claims
- 1. Fire extinguisher and alarm apparatus, comprising:
- (a) a first reservoir;
- (b) an orifice, connected to said first reservoir;
- (c) fire detection means, connected to said orifice, for maintaining said orifice closed in the absence of fire, and for opening said orifice when said fire detection means is exposed to heat from a fire;
- (d) a second reservoir, connected to a valve;
- (e) a flexible diaphragm communicating on one side of said diaphragm with said first reservoir, and communicating on the opposite side of said diaphragm with said second reservoir;
- (f) pressure coupling means, connected to said valve and to said first reservoir, for opening said valve when pressure is lost in said first reservoir;
- (g) acoustic alarm means, connected to said second reservoir through said valve, for generating an audible alarm signal upon flow of fluid through said acoustic alarm means.
- 2. The apparatus of claim 1, further comprising a tube connecting said orifice to said first reservoir.
- 3. The apparatus of claim 1 wherein said first reservoir further comprises a first reservoir fill port and a first reservoir fill port plug.
- 4. The apparatus of claim 1, wherein said fire detection means comprises a fusible alloy plug filling and sealing said orifice.
- 5. The apparatus of claim 4, wherein said fusible alloy plug has a melting point between about 135 degrees Fahrenheit and about 200 degrees Fahrenheit.
- 6. The apparatus of claim 1 wherein said second reservoir further comprises a second reservoir fill port and a second reservoir fill port plug.
- 7. The apparatus of claim 6 wherein said second reservoir fill port plug has a hole through said second reservoir fill port plug, further comprising a transparent tube passing through said hole and sealed to the edges of said hole, with the lower portion of said transparent tube extending into said second reservoir.
- 8. The apparatus of claim 1, wherein said pressure coupling means comprises a rod connected to said valve and to said diaphragm.
- 9. The apparatus of claim 8, wherein said first reservoir and said second reservoir are cylindrical and housed within a cylindrical main body.
- 10. The apparatus of claim 8, wherein said valve comprises an O-ring seated within a groove, and a conical valve head connected to said rod.
Government Interests
This invention was made with Government support under contract No. F29601-81-C-0013 awarded by the U.S. Air Force. The Government has certain rights in this invention.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
568898 |
Apr 1924 |
FRX |