Patent ID: 8567765
Filing Date: 2013-10-29
Classification: E21B,F04D

Abstract:
1. A well pump puller for extracting a well pump from within a well casing that extends from a ground surface to a below-ground point, the well pump having, electrical wiring with a first wiring end connected to the well pump and a second wiring end extending up to the ground surface, and a water pipe with a first pipe end connected to the well pump and a second pipe end extending up to the ground surface, the well pump puller comprising: a rigid base having an engagement element adapted to engage at least one of the well casing and the ground surface, and a base extension extending upwardly, and rotatably supporting a spindle having a rotation element for rotating the spindle, the spindle being adapted to fixably receive the second wiring end; a rigid pipe guide, connected to said base, and having at least one frame element defining an opening, disposed above the well casing, and having a size greater than the water pipe; and a pipe catch having at least one rigid flap, adjacent to the opening, and having a first flap end hingedly connected to said pipe guide and a second flap end having a concave shape, the at least one flap being, biased in a locking position, and moveable between an unlocking position, in which a the respective second flap end is angled upwardly, and the locking position, in which the at least one flap covers a portion of the opening; wherein when the second wiring end is fixably received by the spindle and the rotation element is rotated to rotate the spindle, the electrical wiring is wound around the spindle resulting in a pulling force applied to the electrical wiring, which pulls the water pipe and the pump from within the well casing towards the ground surface, and the water pipe is guided upwardly through the opening with the at least one flap being in the unlocked position, and if the water pipe is subsequently moved downwardly, the second flap end locks the water pipe in a static position by abutting the water pipe and creating static friction in conjunction with at least one of the at least one frame element and a second rigid flap.