High speed manual post puller

Details High speed manual post puller High speed manual post puller

1994-08-26

1995-11-07

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Lifter

E21B 1900

Patent

active

054641926

ABSTRACT:
A hand operated post puller including a lever arm with multiple pivot points and a fulcrum mounted on a force dispersing foot. The cinch for the post is mounted on the end of the lever arm and consists of a pair of angulated links with a pair of separated bars mounted between them. The bars grip the post on either side and pressure from the lever arm tightens the cinch as the force pulls the post out of the ground.

REFERENCES:
patent: D300801 (1989-04-01), Pollard
patent: 475764 (1892-05-01), Garren
patent: 580737 (1897-04-01), Smith
patent: 1761675 (1930-06-01), Mick
patent: 1911287 (1933-05-01), Pladson
patent: 3525502 (1970-08-01), Fisher
patent: 4422621 (1983-12-01), Ekern
patent: 4706935 (1987-11-01), Thompson
patent: 4726565 (1988-02-01), Keller
patent: 4738433 (1988-04-01), Hoff
patent: 5186437 (1993-02-01), Scott

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