Abstract: Provided is a specimen carrier supply and delivery device having at least one specimen carrier magazine with separate compartments for receiving interchangeably specimen carriers and a magazine lift, which is adjustable in height in a magazine carrier frame for receiving interchangeably specimen carrier magazines. Two pairs of bars, which stand vertically and parallel to one another, are arranged in the magazine carrier frame, wherein the magazine lift is guided in a height adjustable manner on the two complementary first bars of the bar pairs. An equal-sided coupling frame, which is aligned vertically to the plane formed by the first bars, with a bridge, which is arranged parallel to the plane, is mounted in a sliding manner on the two complementary second bars of the pairs of bars. A linear scale, which is aligned parallel to the direction of the bars, is fastened to the magazine lift.

Abstract: Provided is a specimen carrier supply and delivery device having at least one specimen carrier magazine with separate compartments for receiving interchangeably specimen carriers and a magazine lift, which is adjustable in height in a magazine carrier frame for receiving interchangeably specimen carrier magazines. Two pairs of bars, which stand vertically and parallel to one another, are arranged in the magazine carrier frame, wherein the magazine lift is guided in a height adjustable manner on the two complementary first bars of the bar pairs. An equal-sided coupling frame, which is aligned vertically to the plane formed by the first bars, with a bridge, which is arranged parallel to the plane, is mounted in a sliding manner on the two complementary second bars of the pairs of bars. A linear scale, which is aligned parallel to the direction of the bars, is fastened to the magazine lift.

Abstract: An arrangement for supporting a shaft of a vacuum pump includes a first bearing for supporting the shaft at one of its end, a second bearing for supporting the shaft at another of its ends and formed as a rolling bearing, a holder for receiving the second bearing and including an oscillating base, a fixation member secured in the vacuum pump housing, metallic connection members for connecting the oscillating base with the fixation member and axial springs arranged between the oscillating base and the fixation member and providing for the axial stiffness of the holder which is greater than its radial stiffness thereof and greater than the axial stiffness of the first bearing.

Abstract: An arrangement for supporting a shaft of a vacuum pump includes a first bearing for supporting the shaft at one of its end, a second bearing for supporting the shaft at another of its ends and formed as a rolling bearing, a holder for receiving the second bearing and including an oscillating base, a fixation member secured in the vacuum pump housing, metallic connection members for connecting the oscillating base with the fixation member and axial springs arranged between the oscillating base and the fixation member and providing for the axial stiffness of the holder which is greater than its radial stiffness thereof and greater than the axial stiffness of the first bearing.

Abstract: A twin-shaft vacuum pump includes two shafts and two rotors supported on respective shafts and cooperating with each other for producing a pumping effect, with each rotor being formed of a plurality of discoid components.

Abstract: A twin-shaft vacuum pump includes two shafts and two rotors supported on respective shafts and cooperating with each other for producing a pumping effect, with each rotor being formed of a plurality of discoid components.

Abstract: A multirotor vacuum pump including a housing, at least two rotors located in the housing and cooperating with each other so that as a result of a contactless movement of the at least two rotors relative to each other, working chambers, into which a to-be-pumped gas is fed, are formed, with at least one of the at least two rotors being hollow, and a drive formed as an external rotor motor having its rotor elements arranged on an inner surface of the at least two rotors, and stator elements fixedly mounted inside the at least one of the at least two rotors opposite the rotor elements.