GEAR TESTING TIGHTENING FORCE FOR THREADED CONNECTION Russian patent published in 2000 - IPC

FIELD: measurement technology. SUBSTANCE: gear has indicator, bushing linked to fixing member which hole houses needle contacting bottom of hole. Needle has collar with bearing surface located inside space of bushing that protrudes beyond upper butt of fixing member. Gear is also fitted with bracket and rocker having common rotation axis. Both ends of bracket carry clamps in which outer surface of protruding part of bushing and indicator are anchored. Measuring bar of indicator is mounted for contact with plane of rocker placed perpendicular to its plane of interaction with free butt of needle. Axes of measuring bar of indicator and needle are mutually perpendicular. Rocker is provided with indicator showing its position relative to bracket. Distances between points of interaction of rocker with measuring rod and of rocker with needle from their rotation axis are equal. Angular bracket is equipped with spring interacting with rocker. Free end of needle has bearing surface with ring protrusion whose diameter exceeds diameter of hole in bushing. EFFECT: expanded functional capabilities. 2 dwg