Wells – Above ground apparatus – With seal for reciprocating member
Reexamination Certificate
2011-01-18
2011-01-18
Thompson, Kenneth (Department: 3676)
Wells
Above ground apparatus
With seal for reciprocating member
C166S083100, C277S326000, C277S343000
Reexamination Certificate
active
07870896
ABSTRACT:
An improved rotating head that utilizes a box assembly that stores at least one locking element that that allows for movement of the locking balls within the box assembly such that a liner inserted into the box assembly biases the locking elements to a locked position to couple the box assembly and the outer barrel. An integrated wear surface of the present invention seals the bearing elements to extend the life of the rotating head and reduce downtime caused by necessary maintenance of the rotating head.
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Braun Cris
Pruitt Grant
Keisling & Pieper PLC
Pruitt Group, Inc.
Ro Yong-Suk
Schrantz Stephen D.
Thompson Kenneth
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