Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Lifter
Patent
1998-05-11
1999-08-10
Scherbel, David A.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Lifter
254131, 254120, 254132, E21B 1900
Patent
active
059346493
ABSTRACT:
A hand operated post and pole extraction device for removing a pole or post from the ground. The device includes a frame assembly having a base section, a vertical frame member extending therefrom and a plurality of leverage arms each extending along the length of and substantially perpendicular to the vertical frame member. A handle assembly is pivotally held atop one of the plurality of leverage arms and a chain assembly is removably connected to one end of the handle assembly. When the chain assembly is wrapped around the pole or post and a force is applied to one end of the handle assembly towards the ground, the handle assembly is caused to pivot about the leverage arm applying a force to the opposite end connected to the chain assembly and the pole or post in a direction away from the ground causing the pole or post to be extracted from the ground. The frame assembly also includes an upright support member extending at an angle from the vertical frame member providing additional support thereto. The handle assembly includes a handle section, an extension arm removably connected thereto and a leverage assembly for engaging the frame and chain assemblies. The leverage assembly includes a plurality of perpendicular rods integrally connected thereto wherein the leverage bar is removably positioned between adjacent ones of the plurality of perpendicular rods when the handle assembly is positioned thereon and a hook positioned at one end thereof for engaging the chain assembly.
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patent: 5186437 (1993-02-01), Scott
patent: 5775674 (1998-07-01), Bigham
Kroll Michael I.
Scherbel David A.
Wilson Lee
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