Long throw shotcrete nozzle

Details Long throw shotcrete nozzle Long throw shotcrete nozzle

2006-03-03

2010-12-21

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including supplemental gas shaping or shielding jet

C239S589000

Reexamination Certificate

active

07854397

ABSTRACT:
An improved apparatus for the gunning of a material is provided having a nozzle with an inner passage defined by an inner tubular member having an inlet end into which a wetted material is to be introduced and an outlet end from which the material is to be sprayed. An outer tubular member is disposed around the inner tubular member defining an outer passage between the inner and outer tubular members. A compressed gas is passed through the outer passage and impinged on the wetted material exiting the inner passage to better control the spray pattern of the wetted material. The inner tubular member extends out beyond the outlet end of the outer tubular member and the inner surface of the outer tubular member and the outer surface of the inner tubular member near the outlet end are chamfered to provide an optimal attitude for the impinging air.

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