Hose clamp

A hose clamp for clamping a hose to an object, the hose clamp comprising:

• a clamping band in which an ear-like tightening device has two outward extending legs and a web portion interconnecting the legs;
• wherein an inner side of the clamping band has a recess in an area which, in a tightened condition, lies upon the hose, the recess having its boundary entirely within the clamping band;
• wherein the recess has a shape of a drop falling toward the center of the clamping band;
• wherein the width of the drop shaped recess decreases in a direction from a center of the clamping band toward an end thereof as viewed in a longitudinal direction of the band;
• wherein the drop shape recess has a surrounding wall which is shallower at a wider end of the drop shaped recess than at a narrower end;
• and
• wherein the drop shape of the recess hinders back movement of the hose such that hose material that has entered into the recess when the tightening device has been narrowed is urged in the direction of decreasing width of the recess when the tightening force is removed.