Abstract: The present invention is related to a pipetting device with means for detachably connecting with at least one pipette tip, at least one displacement device, a driving device for driving a displacement member of the displacement device and an adjustment device with a lead screw nut and a lead screw for adjusting the metering volume.

Abstract: Pipetting device with an upper part of the casing, a driving element, arranged in the upper part of the casing, with a movable drive element, a spigot receiver, arranged in the upper part of the casing, at least one claw receiver inside the spigot receiver, a lower part of the casing, at least one displacement equipment, arranged in the lower part of the casing, with a displacement chamber, at least one seat for detachably holding a pipette point, arranged on the lower part of the casing and being connected with the displacement chamber via a channel, a spigot, arranged on the lower part of the casing, to be inserted into the spigot receiver, at least one snap hook, arranged on the spigot, with a claw for engaging into the claw receiver when the spigot is inserted into the spigot receiver, and a springy shaft, which is deflectable transversely to the axis of the spigot in order to lift off the claw out of the claw receiver, a lock release ring, movable on the spigot, a wedge gear on the shaft and the lock rel

Abstract: Pipetting device for metering liquids comprising a piston actuating rod, at least one receiver for a piston head arranged on one end of the piston actuating rod and which is defined by an abutment surface for the piston head in the axial direction of the piston actuating rod, and comprises a through-opening for a piston rod opposing said piston head and a base for supporting the piston head surrounding the through-opening, at least one cylinder with a hollow space, at least one seat for holding a pipette tip, at least one through-channel connecting the hollow space of a cylinder to a through-hole in a seat and at least one piston arranged longitudinally displaceably in a cylinder with a piston rod extending through the through-opening of a receiver and a piston head at the end of the piston rod arranged in the receiver, which is positioned on the base with a lower face facing the piston rod and comprises a resilient body projecting beyond the upper face facing away from the piston rod, which does not bear aga

Abstract: Multi-channel metering device with displacement devices for displacing a plurality of air columns, a plurality of holders which comprise a shank for releasable connection to a pipette tip, a connector and a connecting channel extending from the free end of the shank to the connector, flexible pipes which connect the displacement devices to the connectors, a guide on which the holders may be displaced with shanks aligned parallel to one another and perpendicular to the guide, abutment surfaces on the faces of the holders facing one another, pins projecting from the holders, oriented perpendicular to the guide and the shanks, round chain links arranged on the pins of adjacent holders, a free space existing between the pins and the rounded portions of the round chain links when the abutment surfaces of the adjacent holders bear against one another, and a drive device which engages at least one of the two outer holders and by means of which the holders may be pushed apart and pushed together along the guide.

Abstract: Gripping tool for automatic laboratory machines, with gripping appliances for gripping vessels, an appliance for converting and/or transferring of movements, the power take-off of which is coupled with the gripping appliances in order to drive them, a coupling appliance for detachable connection with a drive appliance of a tool support of an automatic laboratory machine, which is coupled with the drive of the appliance for converting and/or transferring in order to drive it, and a mounting appliance for detachable mounting of the gripping tool on the tool support of the automatic laboratory machine, while the coupling appliance is connected with the drive appliance of the tool support.

Abstract: A proportioning system, comprising at least one tool, a programmable electronic storage device disposed on the tool, a proportioning device including a device for releasably mounting the tool, a device for actuating the tool, and a device for controlling of the device for actuating the tool and/or device for releasably mounting it, and a device for contacting connected to the device for controlling and disposed on the proportioning device and another device for contacting disposed on the tool that is connected to the programmable electronic storage device wherein the device for contacting and the other device for contacting contact each other when the tool is releasably mounted on the proportioning device.

Abstract: Pipetting device for metering liquids comprising a piston actuating rod, at least one receiver for a piston head arranged on one end of the piston actuating rod and which is defined by an abutment surface for the piston head in the axial direction of the piston actuating rod, and comprises a through-opening for a piston rod opposing said piston head and a base for supporting the piston head surrounding the through-opening, at least one cylinder with a hollow space, at least one seat for holding a pipette tip, at least one through-channel connecting the hollow space of a cylinder to a through-hole in a seat and at least one piston arranged longitudinally displaceably in a cylinder with a piston rod extending through the through-opening of a receiver and a piston head at the end of the piston rod arranged in the receiver, which is positioned on the base with a lower face facing the piston rod and comprises a resilient body projecting beyond the upper face facing away from the piston rod, which does not bear aga

Abstract: Pipetting device with an upper part of the casing, a driving element, arranged in the upper part of the casing, with a movable drive element, a spigot receiver, arranged in the upper part of the casing, at least one claw receiver inside the spigot receiver, a lower part of the casing, at least one displacement equipment, arranged in the lower part of the casing, with a displacement chamber, at least one seat for detachably holding a pipette point, arranged on the lower part of the casing and being connected with the displacement chamber via a channel, a spigot, arranged on the lower part of the casing, to be inserted into the spigot receiver, at least one snap hook, arranged on the spigot, with a claw for engaging into the claw receiver when the spigot is inserted into the spigot receiver, and a springy shaft, which is deflectable transversely to the axis of the spigot in order to lift off the claw out of the claw receiver, a lock release ring, movable on the spigot, a wedge gear on the shaft and the lock rel

Abstract: Multi-channel metering device with displacement devices for displacing a plurality of air columns, a plurality of holders which comprise a shank for releasable connection to a pipette tip, a connector and a connecting channel extending from the free end of the shank to the connector, flexible pipes which connect the displacement devices to the connectors, a guide on which the holders may be displaced with shanks aligned parallel to one another and perpendicular to the guide, abutment surfaces on the faces of the holders facing one another, pins projecting from the holders, oriented perpendicular to the guide and the shanks, round chain links arranged on the pins of adjacent holders, a free space existing between the pins and the rounded portions of the round chain links when the abutment surfaces of the adjacent holders bear against one another, and a drive device which engages at least one of the two outer holders and by means of which the holders may be pushed apart and pushed together along the guide.

Abstract: A proportioning system, comprising at least one tool, a programmable electronic storage device disposed on the tool, a proportioning device including a device for releasably mounting the tool, a device for actuating the tool, and a device for controlling of the device for actuating the tool and/or device for releasably mounting it, and a device for contacting connected to the device for controlling and disposed on the proportioning device and another device for contacting disposed on the tool that is connected to the programmable electronic storage device wherein the device for contacting and the other device for contacting contact each other when the tool is releasably mounted on the proportioning device.

Abstract: Gripping tool for automatic laboratory machines, with gripping appliances for gripping vessels, an appliance for converting and/or transferring of movements, the power take-off of which is coupled with the gripping appliances in order to drive them, a coupling appliance for detachable connection with a drive appliance of a tool support of an automatic laboratory machine, which is coupled with the drive of the appliance for converting and/or transferring in order to drive it, and a mounting appliance for detachable mounting of the gripping tool on the tool support of the automatic laboratory machine, while the coupling appliance is connected with the drive appliance of the tool support.

Abstract: A pipetting system with a pipetting device and at least one pipette tip releasably fastenable thereon, at least one fastening element on the pipetting device, on which the pipette tip is fastened, an ejection means on the pipetting device, which has an axially movable ejection element for releasing the pipette tip from the fastening element with an axial movement of the ejection element and a drive means for driving the axial movement of the ejection element, and a pull-means gear, push-means gear or linkage gear which transmits an essentially axial drive movement of the drive means into an axial movement of the ejection element and with which the ejection element at least on releasing the pipette tip from the fastening element is axially movable over a smaller distance than the essentially axial drive movement covers and an ejection force exceeding the force for the essentially axial drive movement can be exerted onto the pipette tip.