Invention Grant
- Patent Title: Pumping assembly
- Patent Title (中): 泵组件
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Application No.: US14016188Application Date: 2013-09-02
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Publication No.: US08875781B2Publication Date: 2014-11-04
- Inventor: Perry L. St. Denis
- Applicant: 1238585 Alberta Ltd.
- Applicant Address: CA Lloydminster
- Assignee: 1238585 Alberta Ltd.
- Current Assignee: 1238585 Alberta Ltd.
- Current Assignee Address: CA Lloydminster
- Agency: Eubanks PLLC
- Priority: CA2451918 20031218
- Main IPC: F04B47/04
- IPC: F04B47/04 ; F04B9/105 ; E21B43/12 ; F04B47/02

Abstract:
A pumping assembly includes a hydraulic pump having a hydraulic ram tied to a reciprocating annular piston having a central bore. When the annular piston moves in an upward direction, the hydraulic ram moves toward an extended position extending from the housing. When the annular piston moves in a downward direction, the hydraulic ram moves toward a retracted position retracted within the housing. A polish rod extends up through the central bore of the annular piston and is held in position by a polish rod clamp positioned on top of the hydraulic ram. The polish rod moves with the hydraulic ram. Other pumping systems, devices, and methods are also disclosed.
Public/Granted literature
- US20140000866A1 PUMPING ASSEMBLY Public/Granted day:2014-01-02
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