LAMINATED SPRING WASHER Russian patent published in 2000 - IPC

FIELD: mechanical engineering; fasteners for metal structures. SUBSTANCE: proposed washer has at least two layers in cross section. At least part of section boundary line, at least on boundary of face and/or rear side of at least one of layers and/or at least on one of tops of at least one of section layers, is made in form of fragment and/or combination of fragments of oblique conical section of straight round cone. Invention provides directivity of strength properties of washer built in by design, with due account of its work in bend and shear, increased efficiency of locking against self-loosening if hardening compound is placed between washer and part, reduced compression forces and increased relative elastic deformation and ensures identification of manufacture. EFFECT: enhanced locking of parts. 21 cl, 21 dwg