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1. (WO2018136979) REAR LEG CONNECTION FOR BEAM PUMPING UNIT

Pub. No.:    WO/2018/136979    International Application No.:    PCT/US2018/023137
Publication Date: Fri Jul 27 01:59:59 CEST 2018 International Filing Date: Tue Mar 20 00:59:59 CET 2018
IPC: F04B 47/02
E21B 43/12
B66C 23/62
Applicants: LUFKIN INDUSTRIES, LLC
Inventors: GILCREASE, Aaron, Bruce
Title: REAR LEG CONNECTION FOR BEAM PUMPING UNIT
Abstract:
A pump jack includes a base, a pedestal supported by the base and a Samson post that supports a walking beam. The Samson post includes a front leg that is supported by the base and a connection bracket affixed to the front leg. The Samson post further includes an adjustable rear leg that is connected between the connection bracket and the pedestal. The rear leg can be rotated and shifted up and down within the connection bracket to ensure that the opposite end of the rear leg is properly located on the pedestal.