Patent ID: 9630810
Date: 2017-04-25
CPC Classifications: B66C

Claim:
1. A hook for a hoist system, comprising: a hook having a hook body portion and a loading portion; a latch movably connected to the hook having an open position wherein the hook is open and a closed position wherein the hook is closed; a first sensor operable to sense a position of the latch and to generate a signal responsive to the latch being in the closed position; a lock movably connected to the hook and having a locked position wherein movement of the latch from the closed position is obstructed by the lock and an unlocked position wherein movement of the latch from the closed position is unobstructed by the lock, wherein the lock is a cam plate pivotally connected to the body portion for pivotal movement between the locked and unlocked positions, the cam plate having a cam surface for sliding contact with a retaining pin carried in a slot in the body portion when the cam plate is in the unlocked position, the cam plate having a lock surface for engaging the retaining pin to obstruct movement of the latch when the cam plate is in the locked position; and, a second sensor operable to sense a position of the lock and to generate a signal responsive to the lock being the locked position.