| 摘要 |
FIELD: mechanics; paper. ^ SUBSTANCE: clamp is designed in a form of two U-shaped clutches, which, when loose, are parallel to each other, and a pretensioned back. Both clutches have bent and necked-in narrow fold. The clamp has a triangular or trapezoidal profile with each fold going along one of the legs of the triangle or trapezoid. ^ EFFECT: easy to manufacture and use, secure hold of clamped sheets. ^ 4 cl, 11 dwg |
