Fluid jet seal structure
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United States of America Patent
Stats
-
Aug 18, 1992
Grant Date -
N/A
app pub date -
Apr 2, 1991
filing date -
Apr 2, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A seal for a fluid jet apparatus includes an assembly with a head portion and a stem portion. A body has a bore formed therein, the bore has an upstream portion of a first diameter, a downstream portion of a second diameter which is less than the first diameter and an axially extending converging portion which connects upstream and downstream portions. The stem portion has a lesser dimension that said second dimension. The stem portion is disposed within the downstream portion and the head portion is disposed within the upstream portion. The upstream portion extends for a considerable distance upstream of the head portion. A maximum cross section of the head portion is less than the first diameter and greater than the second diameter, and a surface to surface seal is formed between the head portion and the axially extending converging portion. This seal may be applied to either a nozzle or a swivel of a fluid jet assembly.
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