DEVICE FOR CHECKING TIGHTENING EFFORT OF THREADED JOINT Russian patent published in 1997 - IPC

FIELD: mechanical engineering; check up devices. SUBSTANCE: device is mounted on bolt clamping the pack of articles together. Device has body 3 and cover 4 thread coupled with body. Spring-loaded stop 6 is placed between body and cover. Indicator ring 7 is placed on part of stop projecting from cover Support member is installed on bolt at side of free end face of stop. Support member can be made in form of washer 8 or threaded bushing connected with stop 6 by thread. EFFECT: enlarged operating capabilities, possibility of checking of threaded connection with preliminary setting for any required effort within wide range, reduced production costs owing to the fact that components of device do not require high accuracy in manufacture. 2 cl, 2 dwg