Patent ID: 8424846
Filing Date: 2013-04-23
Classification: B66D,Y10T

Abstract:
1. An overload warning system for a winch hoist of the type that includes: a drum that rotates about a drum shaft; a handle that is received in a socket, wherein the handle can be used to turn the drum; and a movable frame that is located between the socket and the housing, the system comprising: the socket being coupled to the drum shaft; a shear pin embedded in the frame and embedded in the socket, and defining a relatively weak shear zone located between the frame and the socket; an elongated opening defined in the socket; and a projection projecting from the frame and into or through the elongated opening; wherein if the shear pin fails under rotational load applied through the handle the socket will rotate relative to the frame until the edge of the elongated opening contacts the projection, such that the socket movement provides tactile feedback that the shear pin has failed while maintaining control over the hoist operation via the handle.