Abstract: The invention relates to a compressor (20) for generating a compressed air flow for a fuel cell (10), having a compressor element (21), in particular a compressor wheel, wherein the compressor element (21) is coupled in a to a drive shaft (23) for co-rotation, the drive shaft (23) being driven by a motor (22), in particular an electric motor, wherein at least one hydrodynamic or hydrostatic bearing (24, 25) is used to mount the shaft (23) in a rotatable manner, wherein the plain bearing (24, 25) is connected to a lubricant supply means (30), which is used to supply a lubricant for hydrodynamic or hydrostatic pressure generation to the plain bearing (24, 25), wherein the lubricant is water or a fluid mixture, predominantly comprising water, wherein the plain bearing (24, 25) has a lubricant inlet and a lubricant outlet, wherein the lubricant can be routed to the plain bearing (24, 25) via the lubricant inlet and the lubricant can be discharged from the plain bearing (24, 25) via the lubricant outlet, and where

Abstract: The present invention relates to a dental drill (10) formed of titanium or a titanium alloy having a hardness greater than pure titanium, said drill extending along a central axis (A) from a proximal end (14) to a distal end (16). The drill comprises a shank (12) arranged in a proximal end region of the drill (10) and extending along the central axis (A), a flute portion (20) arranged distally to and running coaxially with the shank (12), said flute portion (20) comprising two or more flutes (22a, 22b, 22c) extending along the flute portion (20) and being interposed by lands (24a, 24b, 24c), the flute portion further comprising a central solid web and a drill tip (26) directly adjoining the distal end (28) of the flute portion (20) and comprising two or more flanks (25a, 25b, 25c) which taper radially inwardly from the distal end of each land in the distal direction toward the central axis (A), each flank (25a, 25b, 25c) comprising a cutting edge (30a, 30b, 30c).

Abstract: A method including fixing a dental drill template with a fixation pin including a rod and a head attached to the rod. The dental drill template can be fixed by inserting the rod into the drill template or a sleeve provided in the drill template such that a bearing surface of the head bears at least partially on the drill template. The rod has a shape of an essentially circular cylinder and extends from the bearing surface of the head at an essentially right angle. A diameter of the head at the bearing surface is larger than the diameter of the rod.

Abstract: The present invention relates to a dental drill (10) formed of titanium or a titanium alloy having a hardness greater than pure titanium, said drill extending along a central axis (A) from a proximal end (14) to a distal end (16). The drill comprises a shank (12) arranged in a proximal end region of the drill (10) and extending along the central axis (A), a flute portion (20) arranged distally to and running coaxially with the shank (12), said flute portion (20) comprising two or more flutes (22a, 22b, 22c) extending along the flute portion (20) and being interposed by lands (24a, 24b, 24c), the flute portion further comprising a central solid web and a drill tip (26) directly adjoining the distal end (28) of the flute portion (20) and comprising two or more flanks (25a, 25b, 25c) which taper radially inwardly from the distal end of each land in the distal direction toward the central axis (A), each flank (25a, 25b, 25c) comprising a cutting edge (30a, 30b, 30c).

Abstract: A method including fixing a dental drill template with a fixation pin including a rod and a head attached to the rod. The dental drill template can be fixed by inserting the rod into the drill template or a sleeve provided in the drill template such that a bearing surface of the head bears at least partially on the drill template. The rod has a shape of an essentially circular cylinder and extends from the bearing surface of the head at an essentially right angle. A diameter of the head at the bearing surface is larger than the diameter of the rod.

Abstract: A fixation pin for fixing a dental drill template. The fixation pin has a head having a bearing surface that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin has a rod having a shape of an essentially circular cylinder and extending from the bearing surface at an essentially right angle. The rod is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: A fixation pin for fixing a dental drill template. The fixation pin has a head having a bearing surface that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin has a rod having a shape of an essentially circular cylinder and extending from the bearing surface at an essentially right angle. The rod is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: A fixation pin for fixing a dental drill template. The fixation pin has a head having a bearing surface that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin has a rod having a shape of an essentially circular cylinder and extending from the bearing surface at an essentially right angle. The rod is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: A fixation pin for fixing a dental drill template. The fixation pin has a head having a bearing surface that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin has a rod having a shape of an essentially circular cylinder and extending from the bearing surface at an essentially right angle. The rod is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: Fixation pin (1) for fixing a dental drill template. The fixation pin (1) has a head (5) having a bearing surface (10) that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin (1) has a rod (15) having a shape of an essentially circular cylinder and which extends from the bearing surface (10) at an essentially right angle. The rod (15) is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: The invention relates to a bumper system with which the requirements for compatibility between motor vehicles can be accommodated. In particular the invention relates to a bumper system for a motor vehicle which has a force distributing element (10) and which is characterized in that in at least two planes at different heights there are force absorbing components (20, 13) on the motor vehicle (2) and the force distributing element (10) is mounted on the force absorbing components (20, 13) and connects the force absorbing components (20, 13).

Abstract: Set of dental drills having two or more dental drills (10, 10?), each of dental drills (10, 10?) having a cutting portion (20, 20?) that has an end-face drilling end (22, 22?) and a shank portion (30, 30?) that has a receiving region (32, 32?) intended to be received in a drill holding device. The shank portions (30, 30?) of the dental drills each have a substantially circular-cylindrical guide region (40, 40?) for guiding the dental drills, the guide regions (40, 40?) of the two or more dental drills being of the same diameter.

Abstract: Drill sleeve (1) for a dental drill (70) having a hollow and cylindrical shape and a longitudinal axis A, a circular inner surface (10) for guiding the dental drill (70), and an outer surface (15) intended to be inserted into a template (50). The outer surface (15) of the drill sleeve (1) has at least one longitudinal flattened or concave area (20, 120), the circular inner surface (10) is essentially parallel to the longitudinal axis A, and the drill sleeve (1) is thin-walled.

Abstract: Set of dental drills having two or more dental drills (10, 10?), each of dental drills (10, 10?) having a cutting portion (20, 20?) that has an end-face drilling end (22, 22?) and a shank portion (30, 30?) that has a receiving region (32, 32?) intended to be received in a drill holding device. The shank portions (30, 30?) of the dental drills each have a substantially circular-cylindrical guide region (40, 40?) for guiding the dental drills, the guide regions (40, 40?) of the two or more dental drills being of the same diameter.

Abstract: Fixation pin (1) for fixing a dental drill template. The fixation pin (1) has a head (5) having a bearing surface (10) that is intended to bear at least partially on the drill template, or a sleeve provided in the drill template. The fixation pin (1) has a rod (15) having a shape of an essentially circular cylinder and which extends from the bearing surface (10) at an essentially right angle. The rod (15) is intended to be inserted into the drill template or the sleeve provided in the drill template.

Abstract: The invention relates to a bumper system with which the requirements for compatibility between motor vehicles can be accommodated. In particular the invention relates to a bumper system for a motor vehicle which has a force distributing element (10) and which is characterized in that in at least two planes at different heights there are force absorbing components (20, 13) on the motor vehicle (2) and the force distributing element (10) is mounted on the force absorbing components (20, 13) and connects the force absorbing components (20, 13).