Mechanical connection for open clamps

A clamp, comprising clamping band means having clamping band portions adapted to overlap in the installed position, connecting means for connecting overlapping band portions, tightening means for securing the clamp about an object to be fastened thereby, said connecting means including at least one outwardly extending hook-shaped member in the inner of said overlapping band portions adapted to engage in at least one aperture in the outer of said overlapping band portions, and preassembly means in said hook-shaped member forming an abutment surface means for the outer band portion to lessen the likelihood of disengagement of the connecting means during the entire tightening operation by said tightening means.

A method for manufacturing a so-called open clamp having band portions intended to overlap and provided with a mechanical connection including at least one guide hook, comprising the steps of

• cutting a flat blank of predetermined length,
• making a substantially U-shaped cut of a shape corresponding in length to the guide hook, and
• thereafter bending said guide hook twice in such a manner as to form an inner section extending obliquely outwardly, a center section extending at least approximately parallel to the clamping band in its flat condition, and an outer section extending obliquely outwardly.