Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate
2006-05-16
2006-05-16
Dang, Hoang (Department: 3672)
Wells
With below and above ground modification
Eduction pump or plunger in well
C166S078100, C417S904000
Reexamination Certificate
active
07044215
ABSTRACT:
I disclose an apparatus for driving a submerged pump in a well, of the kind where the pump has a driving rod. A motor is connected to a double-reduction helical gear drive, and the gear drive has a threaded output shaft. The gear drive output shaft is removably connected to the pump driving rod. There is a back plate; the motor and gear drive are connected together to the back plate. The back plate has at least one slotted track for vertically adjusting the position of the motor and gear drive above the pump driving rod. The apparatus has a drive head housing attached to the well head. A pivot connects the drive head housing and the back plate, so that the motor and gear drive may be pivoted clear of the pump driving rod when the gear drive and pump rod are disconnected. A back plate rest connected to the drive head housing supports the back plate (and the motor and gear drive) when the motor and gear drive are pivoted clear of the pump driving rod.
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Dang Hoang
New Horizon Exploration, Inc.
Thomas John A.
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