Abstract: A centrifuge rotor (10) includes a closure (32) between a lower part (12) of the centrifuge rotor (10) and a cover (14). The centrifuge rotor has been improved such that proper single-handed operation is made possible. In particular, the closure (32) can be closed and detached again using just one hand. The cover (14) includes a circular cut-out (20) for fastening the centrifuge rotor (10) in a centrifuge. The cover (14) is attached to the lower part (12) by levers having a concave shaping (66). The cover (14) and the levers cooperate to provide a visual indication whether the cover is properly closed.

Abstract: A prechamber spark plug having a housing, which at its front end comprises a prechamber with an ignition electrode arranged therein, wherein the ignition electrode comprises a base and electrode legs protruding from the base, wherein the ignition electrode is machined from a sheet made of an iridium alloy and the legs are bent out of the plane of the base to form a basket shape, characterized in that the ignition electrode, in particular the electrode legs, is/are separated out of the sheet metal by means of laser cutting. Furthermore, a corresponding ignition electrode and a method for producing such an ignition electrode are claimed.

Abstract: A prechamber spark plug having a housing, which at its front end comprises a prechamber with an ignition electrode arranged therein, wherein the ignition electrode comprises a base and electrode legs protruding from the base, wherein the ignition electrode is machined from a sheet made of an iridium alloy and the legs are bent out of the plane of the base to form a basket shape, characterized in that the ignition electrode, in particular the electrode legs, is/are separated out of the sheet metal by means of laser cutting. Furthermore, a corresponding ignition electrode and a method for producing such an ignition electrode are claimed.

Abstract: A fixed-angle rotor for centrifuges includes stiffening ribs on the lower side of its rotor body. Its rotational energy is comparatively low during operation even at high speeds, whereby safety is noticeably increased without the need for a reinforced armored vessel in the centrifuge that is equipped therewith. At the same time, the drive power required to drive the fixed-angle rotor remains low. The fixed-angle rotor also withstands extreme loads over a long period of time. In addition, the fixed-angle rotor can be manufactured cost-effectively, because no additional components are required; rather, the stiffening ribs can also be manufactured during the manufacture of the rotor body. Finally, very thin rotor shells can also be used, which improves the temperature control of the samples, because the fixed-angle rotor has very good structural stability, especially in the main load directions.

Abstract: A centrifuge rotor for sample vessels includes a seal between a lower part and a cover. The seal comprises a gasket, which is arranged in a first groove. The first groove is arranged on one of the elements constituted by the cover and the lower part. The first groove, in relation to the axis of rotation of the centrifuge rotor, is open axially toward the other of the elements constituted by the cover and the lower part.

Abstract: A connection construction (10), between a centrifuge rotor (12) and a drive shaft (14) of a laboratory centrifuge (100), allows one-handed operation that does not require any additional tools. The connection construction (10) is designed such that the locking mechanism (16, 48) is constantly guaranteed, preventing the jamming or blocking of the locking elements (16, 48). In addition, the user receives a reliable indication of a locked state (16, 48) by a clearly noticeable click.

Abstract: A centrifuge includes a swing rotor. Rotor arms of the swing rotor have recesses into which hangers of the swing rotor at least partially swing in a swung-out state. As a result, the centrifuge container and thus also the centrifuges are more compact, because the swinging-out requires less space. An inertial mass of the swing rotor is reduced due to the recesses provided therein, whereby energy consumption, primarily when starting the centrifuge, is significantly reduced.

Abstract: A connection construction (100) between a centrifuge rotor (102) and a drive shaft (104) of a laboratory centrifuge (200) allows one-handed operation that does not require any additional tools. The connection construction (100) is designed such that the locking mechanism (118, 132, 134) is constantly guaranteed, preventing the jamming or blocking of the locking elements (118, 134).

Abstract: A pre-chamber spark plug includes a housing, a ground electrode, and a pre-chamber defined by the housing and a cap, a center electrode being arranged within the pre-chamber, in which the V/D ratio of the pre-chamber volume V to the largest internal diameter D of the pre-chamber (5) is in the range of from 30 mm2 to 95 mm2.

Abstract: A centrifuge rotor for sample vessels includes a seal between a lower part and a cover. The seal comprises a gasket, which is arranged in a first groove. The first groove is arranged on one of the elements constituted by the cover and the lower part. The first groove, in relation to the axis of rotation of the centrifuge rotor, is open axially toward the other of the elements constituted by the cover and the lower part.

Abstract: This disclosure relates to a pre-chamber spark plug including a housing, a ground electrode, a cap enclosing a pre-chamber, and a center electrode inside the pre-chamber, with transfer passages being formed in the cap. Center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. A method of manufacturing such a pre-chamber spark plug is also disclosed. The method includes generating a housing, generating a ground electrode, and generating a cap enclosing a pre-chamber and having transfer passages formed in the cap. The method may further include generating a center electrode inside the pre-chamber, such that center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. The method further includes generating the cap by a forming process from a raw material wire or from raw material bars. The method may further include compacting a material forming the cap.

Abstract: A pre-chamber spark plug includes a housing, a ground electrode, and a pre-chamber defined by the housing and a cap, a center electrode being arranged within the pre-chamber, in which the V/D ratio of the pre-chamber volume V to the largest internal diameter D of the pre-chamber (5) is in the range of from 30 mm2 to 95 mm2.

Abstract: A centrifuge rotor (10) has a closure (32) between a lower part (12) of the centrifuge rotor (10) and a cover (14). The closure has been improved such that proper single-handed operation is made possible. In particular, the closure (32) can be closed and detached again using just one hand. This means that the closure (32) has a simpler structure and can also be produced more cost-effectively.

Abstract: A centrifuge rotor (10) includes a closure (32) between a lower part (12) of the centrifuge rotor (10) and a cover (14). The centrifuge rotor has been improved such that proper single-handed operation is made possible. In particular, the closure (32) can be closed and detached again using just one hand. This means that the closure (32) has a simple structure and can also be produced cost-effectively.

Abstract: A fixed-angle rotor for centrifuges includes stiffening ribs on the lower side of its rotor body. Its rotational energy is comparatively low during operation even at high speeds, whereby safety is noticeably increased without the need for a reinforced armored vessel in the centrifuge that is equipped therewith. At the same time, the drive power required to drive the fixed-angle rotor remains low. The fixed-angle rotor also withstands extreme loads over a long period of time. In addition, the fixed-angle rotor can be manufactured cost-effectively, because no additional components are required; rather, the stiffening ribs can also be manufactured during the manufacture of the rotor body. Finally, very thin rotor shells can also be used, which improves the temperature control of the samples, because the fixed-angle rotor has very good structural stability, especially in the main load directions.

Abstract: This disclosure relates to a pre-chamber spark plug including a housing, a ground electrode, a cap enclosing a pre-chamber, and a center electrode inside the pre-chamber, with transfer passages being formed in the cap. Center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. A method of manufacturing such a pre-chamber spark plug is also disclosed. The method includes generating a housing, generating a ground electrode, and generating a cap enclosing a pre-chamber and having transfer passages formed in the cap. The method may further include generating a center electrode inside the pre-chamber, such that center axes of the transfer passages diverge from a longitudinal direction of the main combustion chamber. The method further includes generating the cap by a forming process from a raw material wire or from raw material bars. The method may further include compacting a material forming the cap.

Abstract: A centrifuge includes a swing rotor. Rotor arms of the swing rotor have recesses into which hangers of the swing rotor at least partially swing in a swung-out state. As a result, the centrifuge container and thus also the centrifuges are more compact, because the swinging-out requires less space. An inertial mass of the swing rotor is reduced due to the recesses provided therein, whereby energy consumption, primarily when starting the centrifuge, is significantly reduced.

Abstract: A pre-chamber spark plug for igniting a fuel-air mixture in an internal combustion engine, in particular a gasoline engine, comprises a spark plug body (1) having a pre-chamber housing (2) and a cap (4) which at least partially closes the pre-chamber (3), and further comprises a ground electrode (11) in the spark plug body (1) as well as a central electrode (7) which protrudes into the pre-chamber (3); the ground electrode (11) has an annular shape and, on the inner surface thereof, includes at least one ignition area (17) designed as a cam (16) as well as a radially inward extending protrusion (18) as a baffle (19).

Abstract: A prechamber spark plug for igniting a fuel-air mixture in an internal combustion engine, in particular a gas engine, having a spark plug body (1) comprising a prechamber housing (2) and a cap (4) that closes the prechamber (3) at least partially, a ground electrode (10) and a central electrode (7) isolated from the ground electrode and projecting into the prechamber, is designed and developed with simple structural means in order to obtain advantageous igniting properties, the ground electrode (10) being designed for that purpose essentially as a cylindrical pin (11) that can be welded in a passage (12), preferably a bore (12), in the spark plug body (1).

Abstract: A pre-chamber spark plug for igniting a fuel-air mixture in an internal combustion engine, in particular a gasoline engine, comprises a spark plug body (1) having a pre-chamber housing (2) and a cap (4) which at least partially closes the pre-chamber (3), and further comprises a ground electrode (11) in the spark plug body (1) as well as a central electrode (7) which protrudes into the pre-chamber (3); the ground electrode (11) has an annular shape and, on the inner surface thereof, includes at least one ignition area (17) designed as a cam (16) as well as a radially inward extending protrusion (18) as a baffle (19).