Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Multipart
Reexamination Certificate
2007-03-27
2007-03-27
Mitchell, Katherine (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Multipart
C411S014500, C411S917000, C411S916000, C411S915000
Reexamination Certificate
active
10503801
ABSTRACT:
A hydraulic nut having a first part connected around the first end of a fixing member the first part having an annular recess which opens to receive a second part forming an annular member which fits within the annular recess, wherein a pressurized medium chamber is defined between the second part and the annular recess. The second part has an annular portion which extends longitudinally away from the first part. The annular portion has an outer surface which is spaced radially inwardly to form a locking part recess. A locking part is placed within the locking part recess, and has an inner diameter which is threadedly engaged with the second part outer surface. The locking part has a surface facing the first part first surface, and movable by the threaded engagement with the second part to an abutment with the first part first surface.
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Metso Paper Inc.
Mitchell Katherine
Stiennon & Stiennon
LandOfFree
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