Patent ID: 9132995
Filing Date: 2015-09-15
Classification: B66C

Abstract:
1. A hook assembly comprising: a main body defining a housing for an actuator; an upper assembly operably coupled to said main body for connecting a line for hoisting a load, said upper assembly configured with a cap and pin for providing a location for connecting the line thereto; a lower assembly operably coupled to said main body for connecting to a load, said lower assembly comprising a support structure body configured to have means for mounting a plurality of keeper arms thereto movable between a retracted position, a soft stop position and a hard stop position, a central bore for aligning a drive shaft assembly with said actuator, and an end cap adapted to interact with said drive shaft assembly; a clutch for connecting said drive assembly to said actuator assembly, said clutch being configured to limit a linear force applied to said actuator; and said drive shaft assembly is configured to move a plurality of hook arms between an open and closed position adapted capturing a line attached to a load, said plurality of hook arms being connected to said support structure body by said means for mounting at a pivot point of said plurality of hook arms; said plurality of hook arms being connected to said drive assembly by one or more intermediate links, whereby when said actuator is energized said drive assembly rotates said plurality of hook arms to a closed position, said plurality of hook arms configured to be rotated by gear teeth in said plurality of hook arms cooperating with screw threads in said actuator whereby said actuator rotating said screw threads provides rotation about said pivot point by said gear teeth in said plurality of hook arms.