Rotating fluid nozzle for tube cleaning system
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United States of America Patent
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Jul 26, 2016
Grant Date -
Jul 16, 2015
app pub date -
Jan 16, 2014
filing date -
Jan 16, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A nozzle for use in a high pressure water jetting system is provided including a stationary housing, a rotating shaft, and a central passage within the shaft for communicating high pressure fluid to the nozzle. The shaft may include communication passages to provide fluid from the central passage to a forward fluid pressure chamber defined between an outer peripheral surface of the shaft and the housing. A rear fluid pressure chamber may be defined between the shaft and the housing and a restriction may be defined between the housing and the inlet end of the shaft, the restriction configured to receive fluid from the rear fluid pressure chamber and transport it to a chamber communicating with the atmosphere. The restriction may be formed as an annular gap between the housing and the inlet end of the shaft and configured to decrease in volume when the shaft moves axially forward.
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