Patent ID: 6439078
Filing Date: 2002-08-27
Classification: B66D,Y10T

Abstract:
An overload protection device for a manual hoist lever comprising:a pressure hub with a radially extending flange and a substantially centrally positioned cantilevered boss, said boss having a threaded outer surface with an axial groove extending from an end of said boss toward said radially extending flange; an outer hub with a central opening, said outer hub including a tapered inner surface, and a flange contact surface which frictionally contacts said radially extending flange of said pressure hub; a brake nut disposed in said central opening of said outer hub between said outer hub and said boss of said pressure hub, said brake nut having a frusto-conical outer surface that frictionally contacts said tapered inner surface of said outer hub, and a threaded inner opening with a corresponding axial groove, said threaded inner opening being sized to threadingly engage said threaded outer surface of said boss; and a dowel pin received within a receiving hole formed upon alignment of said axial groove of said boss and said corresponding axial groove of said brake nut, thereby locking said pressure hub and said brake nut together to prevent relative rotation thereof.