The hollow member (9) has an increasing diameter and decreasing diameter aligned with the increasing and decreasing diameter of the central passage way (5) to form an annular passage (12).

A diameter-increasing part (6) is provided at the tail end of the barrel (1), and an inclined step (8) is provided at the transition between the diameter non-increasing part (7) and the diameter-increasing part (6) of the barrel (1).

Preferably, the spoil (6) is separated into layers of increasingly larger diameter particles.

In the direction of the connecting region, the insertion region has an increasing diameter.

The coupling area has an increasing diameter in a lateral direction (L).

Flattening group (18) for levelling machine with operative rollers (60-65, 70-74) of increasing diameter.

The small-diameter tubular section (2a), the increasing-diameter tubular section (2b), and the large-diameter tubular section (2c) may be computed continuously and integrally.

The pin (12) has a conical section (48) with an increasing diameter at the distal end of the pin (12).

An increasing-diameter tubular section (2b) having a channel area increasing gradually toward the downstream side is interposed between the small-diameter tubular section (2a) and the large-diameter tubular section (2c).

The shape of each wire may be generally described as a spiral, or a helix of expanding diameter.

The slipforming means is intended for slipforming hollow, inclined columns having increasing and/or decreasing diameter.

The implantologist will use drills of increasing diameter to prepare the place in the bone.

A retainer ring (10) which can retain the bottom of the round board (14) is provided in the diameter-increasing part (6).

A concentric structure, linked to the historical development of the urban space according to a circle of increasing diameter and

The head section (21) of the plunger is a pleated bellows (18) consisting of a conical upper section (22) of increasing diameter from top to bottom, and a smaller lower section (23), also conical, of decreasing diameter from top to bottom.