Patent ID: 7713001
Filing Date: 2010-05-11
Classification: E02F

Abstract:
1. A pipe extractor for extracting pipe from the ground comprising: a main frame; a pair of support wheels journaled on a pair of arms pivotally attached to the main frame and including at least one liner actuator connected to the main frame and to the pair of arms and operable to raise and lower the main frame; an extractor assembly including an extractor frame pivotally attached to the main frame for pivotal movement about a transverse horizontal extractor pivot axis, at least one shank attached to the extractor frame, an extractor shoe connected to a lower end of the at least one shank and wherein the extractor shoe includes a lower wall that defines a through passage which pipe to be extracted passes through; a ramp assembly pivotally attached to the extractor shoe an extending rearwardly and upwardly from a trailing edge of the extractor shoe and having an upwardly facing pipe guide surface that guides pipe passing through said through passage upto the ground surface; a hitch beam, for towing the main frame, having a rear end pivotally attached to the main frame by a hitch pin for pivotal movement about a generally vertical axis and a hitch assembly mounted on a front end of the hitch beam; a self leveling linkage assembly attached to the pair of arms pivotally attached to the main frame, attached to the main frame, and attached to the extractor frame for controlling pivotal movement of the extractor frame relative to the main frame; and wherein the through passage through the extractor shoe cooperates with pipe being extracted to pivot the main frame about the hitch pin and relative to the hitch beam.