Patent ID: 9488022
Filing Date: 2016-11-08
CPC Classification: E21B

Claim Text:
1. An overshot for handling equipment defining a spearhead point, said overshot comprising: a substantially elongated overshot body defining a body proximal end and a substantially longitudinally opposed body distal end; a pair of lifting dogs, said lifting dogs being substantially elongated and extending along said overshot body, said lifting dogs defining each a dog proximal section, a dog distal section substantially opposed thereto and a dog intermediate section extending therebetween, said lifting dogs being pivotally mounted to said overshot body in said dog intermediate section so as to be movable between a dog closed configuration and a dog open configuration, said dog distal sections being configured and sized for allowing latching of said spearhead point therebetween when said lifting dogs are in said dog closed configuration, said dog distal sections being spread apart from each other to a greater extent in said dog open configuration than in said dog closed configuration for allowing substantially free movements of said spearhead point therebetween; and a dog control element operatively coupled to said lifting dogs for selectively controlling the movement of said lifting dogs between said dog closed and open configurations, said dog control element being operable between an armed configuration, a locked configuration and a released configuration, said armed, locked and released configurations differing from each other, wherein said dog control element including a trigger operative for automatically configuring said dog control element from said armed configuration to said locked configuration when said spearhead point is latched between said dog distal sections with said dog control element in said armed configuration.