Stake pulling apparatus

Details Stake pulling apparatus Stake pulling apparatus

1987-09-18

1989-02-14

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Lifter

254132, E21B 1900

Patent

active

048041653

ABSTRACT:
A stake pulling apparatus which is characterized by an upright box-frame adapted to contain a quantity of hydraulic fluid, a bifurcated base plate attached to the bottom of the frame for supporting the frame, a hydraulic cylinder pivotally suspended from the frame over the slot provided in the base, a hydraulic pump provided in fluid communication with the box-frame hydraulic fluid reservoir, a gasoline engine for powering the apparatus and a hydraulic control system for controlling the introduction of hydraulic fluid into the hydraulic cylinder to remove a stake embedded in the ground and located in the slot beneath the hydraulic cylinder. In a preferred embodiment, a chain is wrapped around the stake and attached to the cylinder piston, in order to secure the piston to the stake and effect extraction of the stake from the ground.

REFERENCES:
patent: 2967044 (1961-01-01), Corcreham et al.
patent: 3290005 (1966-12-01), Beemsterboer et al.
patent: 3773292 (1973-11-01), Thiermann

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