Richard A Perduta

US Patent:

8424846, Apr 23, 2013

Filed:

Sep 20, 2010

Appl. No.:

12/885783

Inventors:

Richard A. Perduta - Grafton MA, US
David B. Hallen - Rutland MA, US

Assignee:

Lincoln Precision Machining Company - North Grafton MA

International Classification:

B21F 9/00
B66F 3/00

US Classification:

254243, 254218, 254237, 254223, 403 2, 74545

Abstract:

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 socket is coupled to the drum shaft. There is a shear pin with one end embedded in the frame and the other end embedded in the socket, the shear pin defining a relatively weak shear zone located between the frame and the socket. There is an elongated opening defined in the socket and a projection projecting from the frame and into or through the elongated opening. 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. The socket movement provides tactile feedback that the shear pin has failed, while maintaining control over the hoist operation via the handle.

US Patent:

20170152127, Jun 1, 2017

Filed:

Nov 28, 2016

Appl. No.:

15/361718

Inventors:

- North Grafton MA, US
Richard A. Perduta - Grafton MA, US

International Classification:

B66D 3/14

Abstract:

A handle-engaging assembly for releasably engaging a winch hoist handle in a winch hoist, where the winch hoist comprises a frame with an integral handle-receiving socket that is adapted to receive the handle. There is a pull pin assembly that comprises a spring-loaded pin that is constructed and arranged to be manipulated such that it engages with or disengages from an opening in the handle