Patent ID: 6601279
Filing Date: 2003-08-05
Classification: B25B,Y10T

Abstract:
A piston pulling apparatus comprising:a body having a head member and a base member; said body, between said head and base members, initially having a cylindric periphery defined by the exterior surfaces of an array of gripping segments, each said gripping segment having a top, an exterior surface, an interior surface and a bottom; said segment tops being secured to each other by inelastic means proximate said head member; said segment bottoms being secured to each other by elastic means and initially arranged around said base member; said base member is mounted for controlled movement toward said head member and for impinging upon each said interior surface during such movement; said base member and each said interior surface being constructed and arranged such that impinging movement of said base member displaces said segment bottoms radially outward, to increase the circumference of said apparatus proximate to said segment bottoms, but said inelastic means holds said segments tops to prevent their radial displacement; and said head member is mounted to inhibit its movement toward as well as away from said base member.