SEAL CAVITY PROTECTION
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United States of America Patent
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N/A
Issued Date -
Jul 29, 2010
app pub date -
Jul 18, 2008
filing date -
Jul 19, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A seal cavity throat bushing, for use with rotating fluid equipment having a seal cavity, is defined by a rotary shaft having an axis. The shaft housing surrounds at least a portion of the shaft and a sealing device engages the shaft and the housing at one end of the cavity. The bushing includes an annular element, which is adapted for a tight fit in a housing at the entrance to the cavity opposite the one end. The annular element has a radially outer cylindrical surface for contacting a cavity wall of the housing and a radially cylindrical surface having a diameter greater than that of the shaft to define a gap there-between.
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