Fluid sprinkling – spraying – and diffusing – Terminal outlet formed between parts mounted for relative... – Spray fluid pressure responsive discharge modifier
Reexamination Certificate
2000-12-07
2003-07-29
Mar, Michael (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Terminal outlet formed between parts mounted for relative...
Spray fluid pressure responsive discharge modifier
C239S533100, C239S456000, C239S459000, C239S524000
Reexamination Certificate
active
06598810
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a fire hose lance. It is known that most fire hose lances comprise a pressure control device for preventing a too large recoil when opening the lance. This device also enables constant pressure to be maintained even if the water flow rate varies, which may facilitate use of the lance. However, pressure control devices of the prior art suffer from the drawback of increasing the weight of the fire hose lance and therefore making the latter less handy.
Accordingly, the object of the present invention is to overcome the drawbacks of the prior art by providing a fire hose lance which may easily be manoeuvred and is less cumbersome.
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patent: 5312048 (1994-05-01), Steingass et al.
patent: 6007001 (1999-12-01), Hilton
patent: 2 297 930 (1996-08-01), None
patent: 95/17926 (1995-07-01), None
patent: 99/30828 (1999-06-01), None
Gorman Darren
Mar Michael
Nixon & Vanderhye
POK
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