Patent ID: 9206655
Filing Date: 2015-12-08
Classification: E21B

Abstract:
1. An elevator comprising: (a) a pair of opposing semi-circular jaws, each said jaw having first and second ends; (b) a set of gear teeth on said first end of each said jaw, said set of gear teeth rotatably connecting each said jaw; (c) a hinge plate having first and second opposing hinge pins, said hinge pins pivotally attaching a said first end of one of said jaws to said hinge plate about the centerline of said set of gear teeth; (d) a spindle pivotally attached to each said jaw; (e) a radially extending hanger coincident with each said spindle; and (f) an aligning link pivotally connecting said second end of each said jaw to said attached jaw spindle; and (g) a pin offset from said axis of rotation of said gear teeth pivotally connecting each said aligning link to said hinge plate.