Abstract: A tightenable band clamp with a clamping band and a tightening head with two clamping jaws which are a certain circumferential distance apart and which can be moved toward each other by a tightening device. For this purpose, at least one clamping jaw, in the area of its radially inside surface, has at least one projection which extends in the circumferential direction toward the other clamping jaw and which projects into the gap.

Abstract: A hose coupling with a clamp which can be clamped around a longitudinal axis, wherein the edges of the clamp are located closer to the longitudinal axis than an area of the clamp located between the edges. The hose coupling further includes a pipe, wherein an end portion of the hose can be pushed onto an end portion of the pipe and can be clamped by means of the clamp. The end portion of the pipe is provided with a circumferential holding rib, wherein the end portion of the hose can be pushed past the holding rib and wherein the clamp can be clamped on the hose above the holding rib so that the hose is secured between the holding rib and the clamp. The clamp includes an elastic, circular circumferential metal clamping band of uniform thickness.

Abstract: A clamp with a clamp band and a mounting element which is connected to the clamp band. In a clamp band of the above-described type, this object is met by connecting the mounting element to the clamp band with a clinch connection. The clinch connection may have a polygonal cross-section. The clamp band and the mounting element may be formed of different materials at least in areas where they contact each other.

Abstract: A hose coupling with a clamp which can be clamped around a longitudinal axis, wherein the edges of the clamp are located closer to the longitudinal axis than an area of the clamp located between the edges. The hose coupling further includes a pipe, wherein an end portion of the hose can be pushed onto an end portion of the pipe and can be clamped by means of the clamp. The end portion of the pipe is provided with a circumferential holding rib, wherein the end portion of the hose can be pushed past the holding rib and wherein the clamp can be clamped on the hose above the holding rib so that the hose is secured between the holding rib and the clamp. The clamp includes an elastic, circular circumferential metal clamping band of uniform thickness.