Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply
Reexamination Certificate
2007-11-29
2009-12-01
Nguyen, Dinh Q (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With system fluid relief or return to supply
C239S126000, C239S444000, C239S532000, C239S569000
Reexamination Certificate
active
07624933
ABSTRACT:
Apparatus and methods for establishing a controllable reactive thrust in a pressure washing lance (40) linked to an extension member (20) through use of a variable bypass valve (52) and dump tube (66) combination. The bypass valve (52) is coupled to a source of high pressure fluid by a system high pressure or primary circuit (26,38). The bypass valve (52) preferably has at least one bypass input (56), which is intended to be fluidly coupled with the high pressure or primary circuit (38), and at least one each of a bypass primary output (58) and a bypass secondary output (60). Operation of the bypass valve (52) selectively couples the bypass input (56) with the bypass primary output (58) and/or the bypass secondary output (60). Fluid from the bypass primary output (58) is directed to the lance ejection nozzle (44) while fluid from the bypass secondary output (60) (secondary fluid) is directed to the dump tube (66). Dump tube output can also be modified to provide a reactive thrust and vectored by adjustment of the tube bend (67b) and a nozzle (68) thereon.
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Graybeal Jackson LLP
Nguyen Dinh Q
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