METHOD AND DEVICE FOR DRAWING AND REMOVAL OF TENSION FROM STUDS Russian patent published in 2000 - IPC

FIELD: methods and device for drawing and removal of tension from stud fitted in such object as flange and the like. SUBSTANCE: first part moving axially is thrown into engagement with stud, second part is connected with first one, friction member is connected with at least one of these parts in such way that first part has more surfaces engageable with other members as compared with second part; then holding force is applied to friction member when opposite active force is applied to second part which is rotating at this time; first part is movable only axially drawing stud engageable with this part. EFFECT: enhanced efficiency and reliability. 19 cl, 5 dwg