DYNAMOMETER Russian patent published in 1994 - IPC

FIELD: measurement of forces of small values in gravitation field. SUBSTANCE: device has cylindrical hollow body in form of sleeve whose outer side surface has longitudinal recess. Made on both sides of recess are interval marks of load scale. Accommodated in body is rod with threaded shanks. Sleeve inner surface has three step groups of longitudinal recesses with constant period with uniform step of shortening. Recesses are narrowed from end side and in transition places they are chamfered. Attached to rod is bushing connected with reading pointer. Dynamometer measuring member is made in form of set of washers fitted on rod. Washer set has three radial protrusions located in longitudinal recesses. Planes of each washer has projection and hollow. EFFECT: higher efficiency. 7 dwg