Patent ID: 6019408
Filing Date: 2000-02-01
Classification: B66C,Y10T

Abstract:
A safety lock for substantially closing a throat of a hook with a clevis at an upper end having two horizontal bore holes therein comprising:a pin having a shank that has a head on one end and a bore on the opposite end that is substantially perpendicular to a longitudinal direction of the shank;a spring-lock having an upper portion, middle portion, and lower portion, the upper portion of said spring-lock having a bore in axial alignment with the shank of said pin to receive the shank therethrough, the lower portion of said spring-lock closes the throat of said hook;said spring-lock at its upper portion being abutted between the head of said pin and the exterior of the clevis of said hook so that the bore of said spring-lock is in axial alignment with the two bore holes in the clevis of said hook;the shank of said pin penetrating the two bore holes in the clevis of said hook; andrestraining means placed through the bore in the shank of said pin after the shank has penetrated the two bore holes in the clevis of said hook to restrain said pin within the two bore holes;said spring-lock at its middle portion having two flared sides facing toward the head of said pin so that at least one of the two flared sides can be pushed to rotate said spring-lock one-quarter turn around the shaft of said pin and open the throat of said hook.