Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute – Combustion is confined chamber having restricted discharge...
Reexamination Certificate
2011-04-19
2011-04-19
Pezzuto, Robert E (Department: 3671)
Boring or penetrating the earth
Boring by directly applying heat to fluidize or comminute
Combustion is confined chamber having restricted discharge...
C037S344000
Reexamination Certificate
active
07926587
ABSTRACT:
A water jet assembly and method of use is provided comprising a tank with cutting fluid, fuel and oxidizer lines, and a tank discharge lines. In operation, the tank is filled with oxidizer; the oxidizer line is closed and cutting fluid is supplied compressing the oxidizer. When the fluid reaches a level, the fluid line is closed and fuel is injected. A spark generator ignites the fuel/oxidizer mixture thereby raising the tank pressure. As the pressure rises, a low pressure valve simultaneously closes at a prescribed level. The vent line and a discharge to a nozzle are opened thereby, forming a gas bubble. When the bubble reaches a desired size and pressure drops below a level, the vent closes, allowing combustion expansion to force fluid through the nozzle to form a cutting jet.
REFERENCES:
patent: 3182734 (1965-05-01), Scott
patent: 3539104 (1970-11-01), Cooley
patent: 3620313 (1971-11-01), Elmore et al.
patent: 4073351 (1978-02-01), Baum
Kasischke James M.
Nasser Jean-Paul A.
Pezzuto Robert E
Stanley Michael P.
The United States of America as represented by the Secretary of
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