LOCKABLE SWIVEL APPARATUS
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United States of America Patent
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Issued Date -
Nov 12, 2015
app pub date -
Dec 4, 2012
filing date -
Dec 4, 2012
priority date (Note) -
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Abstract
A swivel apparatus includes upper and lower housings having a passage therethrough operably connected with a coupling for selective relative rotation; at least one movable piston having a first position where the housings are rotationally locked to each other and a second position where the housings are free for relative rotation; the piston is retained to the upper housing with a retainer secured within and discrete from the upper housing, and the retainer is axially spaced from a bearing assembly.
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