51 results about "Laboratory centrifuge" patented technology

Laminar flow of a carrier liquid and polymeric molecules through micro-channels is used to straighten, align, separate, and / or sort the polymeric molecules. The polymeric molecules may be analyzed and / or manipulated in the carrier liquid or attached to a wall of the micro-channel for subsequent treatment and analysis. Micro-channels can be manufactured using an elastic molding material. One micro-channel embodiment provides fluid flow using a standard laboratory centrifuge.

A laboratory with a rotor driven by a centrifuge electric motor and a cooling unit driven by an electrical cooling motor, wherein the centrifuge motor is formed as a frequency-controlled induction motor fed from a frequency converter controlled by a control unit and having a centrifuge inverted rectifier that feeds the centrifuge motor and is connected to a d.c. source fed from a mains power rectifier, characterized in that the cooling motor is formed as a frequency-controlled induction motor, and that the frequency converter has a further cooling inverted rectifier connected to the d.c. source parallel to the centrifuge inverted rectifier for feeding the cooling motor.

The invention relates to a rotor for laboratory centrifuges which is designed for accommodating at least one centrifugation container, and an adapter for accommodating a sample vessel and for use in a laboratory centrifuge rotor. The rotor has at least one hold-down element by which the at least one centrifugation container is held in the rotor and protected from axial displacement. In addition, a contact pressure may be produced on the at least one centrifugation container on the rotor.

An adapter for taking up a sample container and for use in a laboratory centrifuge rotor, the adapter including a closed end, an opened end and closure assembly that releasably seals the opened end. The closed end and the opened end can be of a certain diameter. The adapter can also be a certain shape. The closure assembly can also include a handle, flange, a hold down ring, a sealing ring and bottom support for the sealing ring, hold down ring, flange and handle.

The invention relates to a laboratory centrifuge rotor (1) running in air and devoid of an air chamber, comprising rotor arms (2) ending in fork arms (4), containers (6) swinging out on pivot pins (5) being suspended between said arms (2), said rotor being characterized in that an aerodynamic cladding component (12, 16, 20, 25) is mounted ahead as seen in the direction of motion on each rotor arm (2, 4) and / or ahead of each container (6) in at least the radially outermost regions of the zones (7) facing the incident airflow of the swung-out containers (6).

Laminar flow of a carrier liquid and polymeric molecules through micro-channels is used to straighten the polymeric molecules and attach the straightened molecules to a wall of the micro-channel for subsequent treatment and analysis. Micro-channels can be manufactured using an elastic molding material. One micro-channel embodiment provides fluid flow using a standard laboratory centrifuge.

A laboratory centrifuge includes elements (10) for the locking of a lid in a closed position, which locking elements (10) include at least one strike (11) and at least one bolt (12) mobile between a locking position and an unlocking position. These locking elements (10) also include operating elements (15) including a motor shaft (16) that is coupled to the bolt (12) through transmission elements (17). The transmission elements (17) include a crank (18), extending the motor shaft (16), which carries an actuating member (19) bearing on a contact surface (12c1, 12c2) formed on the bolt (12), so that the driving into eccentric rotation of the actuating member (19) about the motor axis of rotation (16′) causes its circulation and bearing along the contact surface (12c1, 12c2) and the rotational control of the bolt (12) between its locking and unlocking positions.

A control device for controlling operating parameters and control functions for the operation of a laboratory centrifuge. The control device has a panel for displaying a visual representation of at least a part of the operating parameters and control functions such as speed of rotation, acceleration temperature, etc. A control switch sets the operating parameters and control functions, this switch being capable of at least two independent movements—a first movement including a rotation about an axis, the second one a displacement along the axis. One of these switch movement, e.g., rotation, provides for the selection and change in setting of one of the operating parameters and control functions, and another of the switch movement, e.g., displacement, provides for acceptance of the selection and acceptance of the setting.

A closure lock, in particular to a lock for a cover of a laboratory centrifuge and a housing of the laboratory centrifuge. The closure lock provides a particularly effective, loadable and safe lock which is not only actuatable through a power drive, but which also provides robust self blocking with respect to strong vibrations and high crash energies.

The invention relates to a laboratory centrifuge (1) with a coupling device (4) actuated by a centrifugal force. According to the invention an eccentric mass (22), especially a roller (23), is guided through a guideway (26) and preferably another guideway (27, 32) in such a way that the centrifugal force (46) of the eccentric mass (22) is deflected in such a way that a coupling force is generated which presses a coupling element (24) radially inwards against the outer surface of a drive shaft (3).

Laminar flow of a carrier liquid and polymeric molecules through micro-channels is used to straighten, align, separate, and / or sort the polymeric molecules. The polymeric molecules may be analyzed and / or manipulated in the carrier liquid or attached to a wall of the micro-channel for subsequent treatment and analysis. Micro-channels can be manufactured using an elastic molding material. One micro-channel embodiment provides fluid flow using a standard laboratory centrifuge.

The invention relates to a laboratory centrifuge rotor (1) running in air and devoid of an air chamber, comprising rotor arms (2) ending in fork arms (4), containers (6) swinging out on pivot pins (5) being suspended between said arms (2), said rotor being characterized in that an aerodynamic cladding component (12, 16, 20, 25) is mounted ahead as seen in the direction of motion on each rotor arm (2, 4) and / or ahead of each container (6) in at least the radially outermost regions of the zones (7) facing the incident airflow of the swung-out containers (6).

A laboratory centrifuge according to the invention provides much better de-mixing rates of centrifuged samples since providing at least one rotation compressor introduces substantially less vibration into the laboratory centrifuge, so that much lower remixing rates are provided.

A laboratory centrifuge includes two rotating parts (10, 11) associated by translation locking elements (13) including at least one female element (16) and at least one complementary male element (15). The male element (15) is associated with elements (20) for its operation to the inactive position, which include a rotating actuator member (21) carried by one of the rotating parts (11) and which cooperates with the male element (15) to ensure, by a rotational operation of the rotating actuator member (21) about its axis of rotation (21′), the displacement of the associated male element (15) from the active position to the inactive position.

The invention relates to a laboratory centrifuge (1) with a coupling device (4) actuated by a centrifugal force. According to the invention an eccentric mass (22), especially a roller (23), is guided through a guideway (26) and preferably another guideway (27, 32) in such a way that the centrifugal force (46) of the eccentric mass (22) is deflected in such a way that a coupling force is generated which presses a coupling element (24) radially inwards against the outer surface of a drive shaft (3).

The present invention relates to a rotor for laboratory centrifuges, the rotor including a rotor housing that is open to the top and at least one recess for taking up centrifuge containers, with the recess being formed in the peripheral area of the rotor as a concentric, circumferential ring trough having an inner wall and an outer wall and with the ring trough being stiffened in a spoke-type manner in such a way using centrifuge containers that are distributed radially and over the circumference of the ring trough that the centrifuge containers support the inner wall and the outer wall rigidly against one another. Furthermore, an adapter for receiving a sample container and for use in such a rotor is suggested.

The present invention relates to a centrifuge rotor, in particular a laboratory centrifuge rotor, including a rotor body, wherein the rotor body at least partially includes a porous metal or a porous metal alloy and an armoring located radially outside with respect to the rotation axis of said rotor body is provided. The centrifuge rotor allows centrifugation to be performed in a shorter time than previously and at a higher rotational speed. This results, inter alia, in higher RCA (relative centrifugal acceleration) values and thus in a very rapid separation of the constituents of the substances to be centrifuged.

An adapter for taking up a sample container and for use in a laboratory centrifuge rotor, the adapter including a closed end, an opened end and closure assembly that releasably seals the opened end. The closed end and the opened end can be of a certain diameter. The adapter can also be a certain shape. The closure assembly can also include a handle, flange, a hold down ring, a sealing ring and bottom support for the sealing ring, hold down ring, flange and handle.

The locking system, which is intended to axially secure the rotor (1), of a laboratory centrifuge, wherein said rotor can be placed onto a rotatably mounted shaft (3) that extends vertically, is characterized by an arrangement of a plurality of locking levers (7), which are each pivotably mounted about axes (8) extending perpendicularly to the shaft (3) between a locking position and an unlocking position in planes containing the axes (2), wherein said locking levers can each be automatically transferred from the unlocking position to the locking position and from the locking position to the unlocking position depending on rotational speed. The locking levers (7) are mounted on the rotor (1), and an annular groove (6) is provided on the shaft (3), said annular groove engaging with the locking levers (7) in the locking position, wherein the locking levers (7) are prestressed in the unlocking position. An advantage over the prior art is achieved, namely that the rotor can be both installed and removed without tools by merely placing the rotor onto or removing the rotor from the shaft (3), in each case depending on rotational speed.

The present invention relates to a centrifuge, in particular, a laboratory centrifuge, with a housing comprising a centrifuge lid, which delimits the centrifuge to the outside, a rotor and a rotor cover for closing the rotor, a connecting device comprising a holding arm and a holder being provided, via which the rotor cover and the centrifuge lid can be detachably connected with each other in such a way that the rotor cover is lifted off of the rotor upon opening of the centrifuge lid and is placed on the rotor upon closing the centrifuge lid. The holding arm is detachably and movably mounted in the holder during opening and closing of the centrifuge lid, and the holding arm and the holder are spaced via a gap space when the centrifuge lid is closed.

A centrifuge bucket for centrifuging materials, in particular in laboratory centrifuges. The centrifuge bucket is operable in a very simple manner and facilitates safe and constant closure over the service life of the centrifuge bucket. Thus, the centrifuge bucket handles much better than known centrifuge buckets because real one hand operation without using a second hand is facilitated. Furthermore, the centrifuge bucket can be produced in a simpler and more cost-effective manner while being equally suitable for a given centrifugation power and centrifugation capacity.

The present invention relates to a rotor for laboratory centrifuges, said rotor comprising a rotor housing that is open to the top and at least one recess for taking up centrifuge containers, wherein the recess is formed in the peripheral area of the rotor as a concentric, circumferential ring trough having an inner wall and an outer wall and wherein the ring trough is stiffened in a spoke-type manner in such a way using centrifuge containers that are distributed radially and over the circumference of the ring trough that the centrifuge containers support the inner wall and the outer wall rigidly against one another. Furthermore, an adapter for receiving a sample container and for use in such a rotor is suggested.

A rotor body (3) for a laboratory centrifuge includes a rotor hub (14) which is inserted in a central opening and on the outside of which, at least one helically curve continuous groove (27) runs so as to form a transport facility for cooling air. The cooling air is effective in the direction of the axis (2) of the rotor hub (14) between the upper side (23) and the underside (22) of the rotor (1). In this manner, a cooling airstream which runs axially through the rotor (1) and undergoes direct thermal exchange with the rotor (1) and the mixtures to be treated in the laboratory centrifuge can be realized. No additional installation volume is required for this measure and equalization of the temperature of the rotor and the housing accommodating the rotor can be achieved.

A rotor body (3) intended for a laboratory centrifuge is provided with a rotor hub (14) which is inserted in a central opening and on the outside of which at least one helically curved continuous groove (27) runs so as to form a transport facility for cooling air which is effective in the direction of its axis (2) between the upper side (23) and the underside (22) of the rotor (1). In this way, a cooling airstream which runs axially through the rotor (1) and undergoes direct thermal exchange with the rotor (1) and the mixtures to be treated in the laboratory centrifuge can be realized. No additional installation volume is required for this measure and equalization of the temperature of the rotor and the housing accommodating the rotor can be achieved.

The present invention relates to a laboratory centrifuge having a cooling device which comprises a compressor enclosed by a compressor housing, with the compressor housing, in the region of the compressor head, being at least regionally provided with a damping material which is capable of absorbing vibrations in the range from 20 Hz to 100 Hz.

Laminar flow of a carrier liquid and polymeric molecules through micro-channels is used to straighten the polymeric molecules and attach the straightened molecules to a wall of the micro-channel for subsequent treatment and analysis. Micro-channels can be manufactured using an elastic molding material. One micro-channel embodiment provides fluid flow using a standard laboratory centrifuge.

A laboratory centrifuge includes elements (10) for the locking of a lid in a closed position, which locking elements (10) include at least one strike (11) and at least one bolt (12) mobile between a locking position and an unlocking position. These locking elements (10) also include operating elements (15) including a motor shaft (16) that is coupled to the bolt (12) through transmission elements (17). The transmission elements (17) include a crank (18), extending the motor shaft (16), which carries an actuating member (19) bearing on a contact surface (12c1, 12c2) formed on the bolt (12), so that the driving into eccentric rotation of the actuating member (19) about the motor axis of rotation (16′) causes its circulation and bearing along the contact surface (12c1, 12c2) and the rotational control of the bolt (12) between its locking and unlocking positions.

The invention relates to a laboratory centrifuge (1). The laboratory centrifuge has a centrifugal system (2). The centrifugal system has a drive device (3) and a rotor (4) driven by the drive device (3). The centrifugal train (2) is supported relative to the housing (8) by means of at least one spring and / or damping device (7). The laboratory centrifuge (1) has an inclination sensor for detectingthe orientation of the longitudinal axis and / or the rotational axis (6) of the centrifuge system (2). The tilt sensor may be a gyroscope sensor held by a housing of a centrifugal system (2), or may beprovided with a magnetic field sensor and a permanent magnet (31) that generates a magnetic field.