Patent ID: 8303423
Filing Date: 2012-11-06
Classification: F16D,Y10T

Abstract:
1. A power transmission in which a driven body and a drive body for driving said driven body are rotated in the same direction and are coupled through a coupling member, torque of said drive body is transmitted to said driven body, and transmission of torque from said drive body is interrupted when a drive load of said driven body exceeds a predetermined value, characterized in that said coupling member has, as separate sections in said coupling member, both of a positive torque transmission section for holding torque in a forward rotational direction and interrupting transmission of torque from said drive body by its own fracture when a drive load of said driven body exceeds said predetermined value, and a negative torque transmission section for holding torque in a reverse rotational direction, wherein preloads in directions opposite to each other are applied to said positive torque transmission section and said negative torque transmission section, both preloads are in a condition approximately balanced with each other from a relationship of action/reaction, and said negative torque transmission section is disposed on each side of said positive torque transmission section.