APPARATUS FOR UNSCREWING BOLTS AND NUTS WITH STRIPPED FACES

摘要

FIELD: mechanical engineering. SUBSTANCE: apparatus has jaws 5 of concave arced shape. Jaws 5 are provided with notches. Each serration of notch is defined by two side faces of three-faced prism and is oriented toward central opening of head 1. EFFECT: increased efficiency in unscrewing bolts and nuts by increased area of contact between working surfaces of jaws and stripped faces of threaded part. 2 cl, 5 dwg