Fire extinguisher valve

• US 4,567,948 A
• Filed: 01/22/1985
• Issued: 02/04/1986
• Est. Priority Date: 01/22/1985
• Status: Expired due to Fees

• Current Assignee: The United States of America As Represented By The Secretary of Agriculture
• Original Assignee: The United States of America As Represented By The Secretary of Agriculture
• Inventors: Rozniecki, Edward J.
• Primary Examiner(s): Nase, Jeffrey V.
• Application Number:
  US06/692,954
• Time in Patent Office: 378 Days
• Field of Search: 169/30, 169/71, 169/74, 169/75, 169/76, 169/89, 239/337, 222/402.24, 222/402.1, 222/514
• US Class Current: 169/76
• CPC Class Codes: A62C 13/64 the extinguishing material being released by means of a valve

Abstract

A portable fire extinguisher designed to increase the discharge velocity and maximum throw distance of the extinguishant. A poppet type valve manually operable to open and close the extinguisher. Tappets placed outside the path of the discharging extinguishant and a smoothly finished discharge passage to provide an obstruction free discharge path. The obstruction free discharge path reduces turbulence and the resultant pressure drop in the extinguishant and increases both the discharge rate and throw distance.

Claims

1. In a fire extinguisher comprising:

a bottle;

a pressurized extinguishant in said bottle;

a housing attached to said bottle;

an opening in said housing;

a conduit in said housing, said conduit having an inlet and an exit end, said inlet end communicating with said bottle, said exit end communicating with said opening, said conduit having smooth interior faces;

a poppet valve in said conduit, said poppet valve sealing said bottle;

at least one tappet rod having a first and second end said tappet rod attached at said first end to said poppet valve, at least one tappet guide passage through said housing not intersecting said conduit;

said tappet rod slidably engaged within said tappet guide passage, whereby said tappet rod causes said poppet valve to move to an open position and releasing said extinguishant when depressed.

2. The fire extinguisher of claim 1 wherein said opening is perpendicular to said bottle, and said conduit is radially curved between said inlet end and said exit end, whereby said extinguisher is operated in a generally upright manner.

3. The fire extinguisher of claim 2 wherein said poppet valve comprises a generally cylindrical head, said head having a first side and a second side;

a projection attached to said first side, a seating surrounding said inlet end, said first side registers with said seating when said poppet valve is in a closed position;

said projection centrally aligns said first side with said seating when said poppet valve is in said closed position, said pressurized extinguishant acts on said second side to urge said poppet valve to said closed position.

4. The fire extinguisher of claim 3 and further comprising a non-metallic O-ring seal between said first side and said seating to retain said extinguishant in said bottle when said poppet valve is in said closed position.

5. The fire extinguisher of claim 4 and further comprising a handle pivotably attached to said housing, said handle depresses said tappet rod to cause said poppet valve to travel to an open position, said open position allowing an unobstructed flow of pressurized extinguishant between said bottle and said exit end.

6. The fire extinguisher of claim 5 and further comprising a spring attached to said second end, between said second end and housing normally urging said poppet valve to said closed position and sealing said pressurized extinguishant in said bottle.

7. The fire extinguisher of claim 6 and further comprising a nozzle means attached to said opening.

8. The fire extinguisher of claim 5 and further comprising a spring attached to said second end and said housing, normally urging said poppet valve to said open position.

9. In a fire extinguisher comprising:

a bottle;

a pressurized extinguishant in said bottle;

a housing threadably attached at one end to said bottle;

an opening in said housing perpendicular to said bottle;

a conduit in said housing communicating said pressurized extinguishant with said opening, said conduit having an inlet end and an exit end, said inlet end communicating with said bottle and said exit end communicating with said opening, said conduit being radially curved between said inlet and said exit ends and having smooth interior faces;

a poppet valve having a generally cylindrical head, said head having a first side and a second side, a projection attached to said first side, a seating surrounding said inlet end, said first side registers with said seating when said poppet valve is in a closed position;

said projection centrally aligns said first side with said seating when said poppet valve is in said closed position;

said pressurized extinguishant acts on said second side to urge said poppet valve to said closed position;

a non-metallic O-ring seal between said first side and said seating to retain said extinguishant in said bottle when said poppet valve is in said closed position;

two tappet rods having a first and second end attached at said first end near the periphery of said first side, two parallel tappet guide passages through said housing, said inlet end and said conduit being located centrally between said tappet guide passages, said tappet rods slidably engaged within said guide passages, said second end of said tappet rods extending beyond said housing;

a bar attached between said second ends;

a handle pivotably attached to said housing, said handle depresses said tappet rods to cause said poppet valve to travel to an open position, said open position allowing an unobstructed flow of pressurized extinguishant between said bottle and said exit end;

a spring means between said bar and said housing normally urging said poppet valve to said closed position.

10. In a fire extinguisher comprising:

a bottle;

a pressurized extinguishant in said bottle;

a housing threadably attached at one end to said bottle;

an opening in said housing perpendicular to said bottle;

a conduit in said housing communicating said pressurized extinguishant with said opening, said conduit having an inlet end and an exit end, said inlet end communicating with said bottle and said exit end communicating with said opening, said conduit being radially curved between said inlet and said exit ends and having smooth interior faces;

a poppet valve having a generally cylindrical head, said head having a first side and a second side, a projection attached to said first side, a seating surrounding said inlet end, said first side registers with said seating when said poppet valve is in a closed position;

said projection centrally aligns said first side with said seating when said poppet valve is in said closed position;

said pressurized extinguishant acts on said second side to urge said poppet valve to said closed position;

a non-metallic O-ring seal between said first side and said seating to retain said extinguishant in said bottle when said poppet valve is in said closed position;

two tappet rods having a first and second end attached at said first end near the periphery of said first side, two parallel tappet guide passages through said housing, said inlet end and said conduit being located centrally between said tappet guide passages, said tappet rods slidably engaged within said guide passages, said second end of said tappet rods extending beyond said housing;

a bar attached between said second ends;

a handle pivotably attached to said housing, said handle depresses said tappet rods to cause said poppet valve to travel to an open position, said open position allowing an unobstructed flow of pressurized extinguishant between said bottle and said exit end;

a spring attached to said bar and to said housing between said tappet rods normally urging said poppet valve to said open position.