[12] Patent
[11] Patent No.:GC0013777  
[45] Date of Publishing the Grant of the Patent: 9/Sep /2025                102/2025  		 Number of the Decision to Grant the Patent:2025/203303
Date of the Decision to Grant the Patent:05/Aug/2025

[21] Application No.:GC 2018-35731

[22] Filing Date:26/7/2018

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
1/8/2017
 15/666526

[72] Inventor: Garnett W. VALENTINE

[73] Owner: Lufkin Industries, LLC, 601 S. Raguet Street, Lufkin, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C

  

 

   

[51]IPC:
Int. Cl.: E21B 43/12; F04B 47/02 (2006.01)

[56] Cited Documents:

-US 4703665 A (THOMPSON, JAMES E.) 03 November 1987
-US 20120031208 A1 (SIMPSON et al.) 09 February 2012
  
Examiner: Eng. Imad A. AlAhaidib

[54] BEAM PUMPING UNIT WITH GEOMETRY OPTIMIZED FOR BEARING STRESS REDUCTION
[57] Abstract: A pump jack includes a number of standard components that have been sized and configured according to unique relative dimensions to produce a pump jack that reduces structural stress, increases bearing life and permits a lower cost of manufacture. These geometric ratios can be used to express the relative size and spacing of the crankshaft, crank arms, center bearing, equalizer bearing, walking beam and pitman arms. Pump jacks incorporating one or more of these geometric ratios can be sized and scaled for a variety of pumping applications.
No. of claims: 8     No. of figures: 6


 

Note: Any interested individual may, within 3 months of publication of the grant, file objection thereof with the Grievance Committee after payment of grievance fees.