Patents Assigned to Brand GmbH + Co KG
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Patent number: 9731953Abstract: A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids in which the stroke length of the piston of the cylinder-and-piston assembly is delimited by a stroke length stop when suctioning from the cylinder and is delimited by a readjustment stop when exhausting into the cylinder. The readjustment stop is disposed on the piston or on the cylinder housing and interacts with a fixed stop. The readjustment stop is accessible and adjustable by way of a removable seal. The seal is connected by way of ribs to a piston bearing. The readjustment stop is disposed below this removable seal. The seal has a molding and the piston bearing has a counter molding. Displacement of the seal in relation to the piston bearing moves the seal in the longitudinal direction, and by this movement, the seal is removed in a manner that preferably is not capable of re-assembly.Type: GrantFiled: January 21, 2016Date of Patent: August 15, 2017Assignee: BRAND GMBH + CO KGInventors: Günter Hochholzer, Dieter Böhm, Ottmar Kneucker, Markus Kurz
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Patent number: 9694376Abstract: A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids provides a cylinder attachable to a valve block assembly, a piston, displaceable in a sealed manner in the longitudinal direction within the cylinder, and a cylinder housing connected to the piston and externally encompassing the cylinder. The piston is displaceable in the cylinder and the stroke length of the piston in the cylinder is delimited by a fixed stop, which interacts with a stroke length stop on the cylinder housing. The cylinder housing has a longitudinal slot running in the longitudinal direction and on the external side thereof has a scale assigned to this longitudinal slot. The stroke length stop on the cylinder housing is adjustable in the longitudinal direction and is interlockable in the respective position.Type: GrantFiled: January 21, 2016Date of Patent: July 4, 2017Assignee: BRAND GMBH + CO KGInventors: Dieter Böhm, Günter Hochholzer, Ottmar Kneucker, Markus Kurz
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Publication number: 20170074718Abstract: A housing for a laboratory device, having floor, ceiling, rear, side, and front walls, which together form an operating chamber, wherein the front wall is movable upward and downward between a lowered closed position and a raised open position in a linear and simultaneously pivoting manner and, in the open position of the front wall, the operating chamber is open on the front side of the housing. The top wall section having top and bottom wall sections connected about a first pivot axis and transitions in an arc shape to a plate-shaped connection section extending at an angle to the top wall section, or is connected thereto in an angularly rigid manner, and a connection section is hinged in a pivoting manner to the ceiling on the edge thereof distant from the top wall section parallel to the first pivot axis, at a distance from the front wall.Type: ApplicationFiled: February 26, 2015Publication date: March 16, 2017Applicant: BRAND GMBH + CO KGInventors: Wolfgang ETTIG, Steffen GEHRIG
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Publication number: 20160264391Abstract: A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids in which the stroke length of the piston of the cylinder-and-piston assembly is delimited by a stroke length stop when suctioning from the cylinder and is delimited by a readjustment stop when exhausting into the cylinder. The readjustment stop is disposed on the piston or on the cylinder housing and interacts with a fixed stop. The readjustment stop is accessible and adjustable by way of a removable seal. The seal is connected by way of ribs to a piston bearing. The readjustment stop is disposed below this removable seal. The seal has a molding and the piston bearing has a counter molding. Displacement of the seal in relation to the piston bearing moves the seal in the longitudinal direction, and by this movement, the seal is removed in a manner that preferably is not capable of re-assembly.Type: ApplicationFiled: January 21, 2016Publication date: September 15, 2016Applicant: BRAND GMBH + CO KGInventors: Günter Hochholzer, Dieter Böhm, Ottmar Kneucker, Markus Kurz
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Publication number: 20160214846Abstract: A valve block assembly for a bottle attachment apparatus for handling liquids has a valve block, an intake valve insert and/or an exhaust valve insert, and a valve receptacle assigned to the respective valve insert. The valve insert is inserted in a replaceable and sealing manner in the valve receptacle. The valve insert has a stop portion, a fastening portion distinct therefrom and a sealing portion distinct from both. The associated valve receptacle has stop, fastening, and sealing portions matching the equivalent portions of the valve insert. When the valve insert is installed correctly both the stop portions and the sealing portions bear on one another in a planar manner.Type: ApplicationFiled: January 21, 2016Publication date: July 28, 2016Applicant: BRAND GMBH + CO KGInventors: Günter Hochholzer, Markus Kurz
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Publication number: 20160214127Abstract: A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids provides a cylinder attachable to a valve block assembly, a piston, displaceable in a sealed manner in the longitudinal direction within the cylinder, and a cylinder housing connected to the piston and externally encompassing the cylinder. The piston is displaceable in the cylinder and the stroke length of the piston in the cylinder is delimited by a fixed stop, which interacts with a stroke length stop on the cylinder housing. The cylinder housing has a longitudinal slot running in the longitudinal direction and on the external side thereof has a scale assigned to this longitudinal slot. The stroke length stop on the cylinder housing is adjustable in the longitudinal direction and is interlockable in the respective position.Type: ApplicationFiled: January 21, 2016Publication date: July 28, 2016Applicant: BRAND GMBH + CO KGInventors: Dieter Böhm, Günter Hochholzer, Ottmar Kneucker, Markus Kurz
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Publication number: 20160214848Abstract: An exhaust valve assembly for a bottle attachment apparatus for handling liquids has a valve housing which forms a valve chamber having an inlet and an outlet, an exhaust valve body disposed on the inlet in the valve chamber, and a safety valve body disposed on the outlet in the valve chamber. The exhaust valve body is biased toward an exhaust valve seat, counter to the flow direction of the liquid and the safety valve body is biased toward a safety valve seat in the flow direction of the liquid. The safety valve seat is integrally molded on the valve housing.Type: ApplicationFiled: January 21, 2016Publication date: July 28, 2016Applicant: BRAND GMBH + CO KGInventors: Dieter Böhm, Michael Ertl, Günter Hochholzer, Bernhard Kämmerer, Ottmar Kneucker, Markus Kurz
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Publication number: 20160214847Abstract: An exhaust line assembly for a bottle attachment apparatus for handling liquids has an outrigger-type mount, an exhaust line which is disposed and guided in the mount and which terminates in a tip, and a mounting lug which has a closure cap attached to the end thereof and which is fastened to the exhaust line assembly, the tip of the exhaust line being closable by way of the closure cap. The mounting lug at that end thereof which is fastened to the exhaust line assembly is articulated so as to be pivotable by a rotary joint which has a physically present axis of rotation.Type: ApplicationFiled: January 21, 2016Publication date: July 28, 2016Applicant: BRAND GMBH + CO KGInventors: Dieter Böhm, Michael Ertl
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Patent number: 9364827Abstract: A piston-operated pipette with a drive unit with a piston drive and a displacement unit mounted on the drive unit, the displacement unit being dismountable from the drive unit, the drive unit having an actuating drive for the piston drive and a receiving section for the displacement unit. The displacement unit has a fastening section which fits the receiving section of the drive unit, there being a first detachable mechanical connection between the actuating drive and the piston drive and there being a second detachable mechanical connection between the receiving section of the drive unit and the fastening section of the displacement unit. The second detachable mechanical connection is made as a magnetic connection. A mechanical arrangement for breaking the magnetic connection is provided between the receiving section and the fastening section, the magnetic connection being releasable by actuating the arrangement for breaking the magnetic connection.Type: GrantFiled: November 19, 2013Date of Patent: June 14, 2016Assignee: BRAND GMBH + CO KGInventors: Steffen Gehrig, Günter Hochholzer, Burkard Schaub
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Publication number: 20160139166Abstract: A control unit for controlling a pipetting machine a pipetting machine, and a method for controlling a pipetting machine, wherein the control unit controls at least one actuator for moving a pipetting device between receptacle units for liquids to be pipetted and for receiving or dispensing liquids to be pipetted. The control unit, by selecting one or more graphic receptacle unit equivalents which correspond to receptacle units, assigns at least one transfer parameter to the receptacle unit equivalents. The transfer parameter corresponds to a transfer volume, which is to be received from the receptacle unit corresponding to the respective receptacle unit equivalent or is to be dispensed into the receptacle unit corresponding to the respective receptacle unit equivalent. The control unit is additionally designed so that selected source receptacle unit equivalents are simultaneously assignable to multiple target receptacle unit equivalents.Type: ApplicationFiled: November 16, 2015Publication date: May 19, 2016Applicant: BRAND GMBH + CO KGInventors: Christian Berberich, Jürgen Schraut, Michael Zugelder, Thomas Howe
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Patent number: 8997552Abstract: A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus (1) for performing the method. Essential to the system is a holder (8) for the sealed connection of a pipette tip (3) to the leak-testing apparatus. A line system (9) with connecting sections of the leak-testing apparatus forms a specific connection volume. The pipette tip (3) is evacuated to a measuring pressure below atmospheric pressure. With the vacuum pump (5) disconnected and the connection volume sealed off, the pressure is measured after a specific time interval, and any possible rise in pressure is determined. An indication of the serviceability of the pipette (2) is generated from the pressure rise determined.Type: GrantFiled: October 20, 2010Date of Patent: April 7, 2015Assignee: Brand GmbH + Co KGInventors: Rainer Feldmann, Wolfgang Ettig
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Publication number: 20140137672Abstract: A piston-operated pipette with a drive unit with a piston drive and a displacement unit mounted on the drive unit, the displacement unit being dismountable from the drive unit, the drive unit having an actuating drive for the piston drive and a receiving section for the displacement unit. The displacement unit has a fastening section which fits the receiving section of the drive unit, there being a first detachable mechanical connection between the actuating drive and the piston drive and there being a second detachable mechanical connection between the receiving section of the drive unit and the fastening section of the displacement unit. The second detachable mechanical connection is made as a magnetic connection. A mechanical arrangement for breaking the magnetic connection is provided between the receiving section and the fastening section, the magnetic connection being releasable by actuating the arrangement for breaking the magnetic connection.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Applicant: BRAND GMBH + CO KGInventors: Steffen Gehrig, Günter Hochholzer, Burkard Schaub
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Patent number: 8652418Abstract: A pipette for a pipette system comprising a pipette and a syringe. The pipette housing has a longitudinal axis. A syringe to be handled with the pipette is insertable with its fastening portion and plunger head into the pipette housing and is removable or discardable from said pipette housing in the direction of the longitudinal axis of the pipette housing, i.e., axially. The syringe has as cylinder and a plunger with a plunger head which projects out of the end of the cylinder even when the plunger has been completely inserted into the cylinder. A pipette housing comprises an axially accessible plunger gripping device for the plunger head of the syringe. An actuating device for the plunger gripping device is mounted on the plunger displacing device and is axially displaceable with said adjusting device.Type: GrantFiled: July 1, 2011Date of Patent: February 18, 2014Assignee: Brand GmbH + Co KGInventors: Renate Rempt, Dieter Böhm, Steffen Gehrig, Ottmar Kneucker
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Patent number: 8597593Abstract: A bottle top dispenser for handling liquids having a piston-cylinder arrangement in an outside housing. At least one actuating button (49) that can be pressed downwards is arranged on the upper side of the outside housing. The outside housing (2) can be provided with ventilation openings (48) that can be hidden beneath the actuating button (49). The bottle arrangement is also characterized by a specific arrangement of a sensor system (65) in relation to a measuring strip (64) on a piston rod (28). The path measuring signal can be evaluated by means of a magnetoresistive sensor system, especially such a system based on the AMR effect. The arrangement of the measuring strip (64) in relation to the longitudinal central axis of the piston rod (28) is of considerable importance.Type: GrantFiled: February 27, 2012Date of Patent: December 3, 2013Assignee: Brand GmbH + Co KGInventors: Dieter Boehm, Wolfgang Ettig, Peter Mahler, Juergen Schraut, Roland Wohner
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Patent number: 8420027Abstract: A dosing device for liquids, with a distributor rail and a plurality of dosing units for the liquid that are hydraulically connected to the replaceable distributor rail. Each dosing unit has a valve unit, preferably a suction valve, a discharge valve and a discharge cannula. A piston-cylinder unit is detachably arranged on each valve unit for drawing in and measured discharging of the liquid. Each valve unit has a hydraulic connection element for detachable hydraulic connection to the distributor rail. The distributor rail has an elongate fluid supply line, a supply connection for the liquid being provided on an end of the distributor rail and dosing unit connections being distributed laterally along the length of the rail. Each of the dosing unit connections are detachably coupled to the hydraulic connection elements of the dosing units. The distributor rail is a replaceable part made of a preferably recyclable, injection-moldable plastic.Type: GrantFiled: October 13, 2008Date of Patent: April 16, 2013Assignee: Brand GmbH + Co KGInventors: Peter H. Mahler, Thomas Stricker, Harry Siebert, Eberhard Albrecht
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Publication number: 20120240663Abstract: A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus (1) for performing the method. Essential to the system is a holder (8) for the sealed connection of a pipette tip (3) to the leak-testing apparatus. A line system (9) with connecting sections of the leak-testing apparatus forms a specific connection volume. The pipette tip (3) is evacuated to a measuring pressure below atmospheric pressure. With the vacuum pump (5) disconnected and the connection volume sealed off, the pressure is measured after a specific time interval, and any possible rise in pressure is determined. An indication of the serviceability of the pipette (2) is generated from the pressure rise determined.Type: ApplicationFiled: October 20, 2010Publication date: September 27, 2012Applicant: BRAND GMBH + CO KGInventors: Rainer Feldmann, Wolfgang Ettig
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Publication number: 20120183453Abstract: A bottle top dispenser for handling liquids having a piston-cylinder arrangement in an outside housing. At least one actuating button (49) that can be pressed downwards is arranged on the upper side of the outside housing. The outside housing (2) can be provided with ventilation openings (48) that can be hidden beneath the actuating button (49). The bottle arrangement is also characterized by a specific arrangement of a sensor system (65) in relation to a measuring strip (64) on a piston rod (28). The path measuring signal can be evaluated by means of a magnetoresistive sensor system, especially such a system based on the AMR effect. The arrangement of the measuring strip (64) in relation to the longitudinal central axis of the piston rod (28) is of considerable importance.Type: ApplicationFiled: February 27, 2012Publication date: July 19, 2012Applicant: BRAND GMBH + CO KGInventors: Dieter BOEHM, Wolfgang ETTIG, Peter MAHLER, Juergen SCHRAUT, Roland WOHNER
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Patent number: 8142738Abstract: A bottle top dispenser for handling liquids having a piston-cylinder arrangement in an outside housing. At least one actuating button (49) that can be pressed downwards is arranged on the upper side of the outside housing. The outside housing (2) can be provided with ventilation openings (48) that can be hidden beneath the actuating button (49). The bottle arrangement is also characterized by a specific arrangement of a sensor system (65) in relation to a measuring strip (64) on a piston rod (28). The path measuring signal can be evaluated by means of a magnetoresistive sensor system, especially such a system based on the AMR effect. The arrangement of the measuring strip (64) in relation to the longitudinal central axis of the piston rod (28) is of considerable importance.Type: GrantFiled: December 6, 2007Date of Patent: March 27, 2012Assignee: Brand GmbH + Co KGInventors: Dieter Boehm, Wolfgang Ettig, Peter Mahler, Juergen Schraut, Roland Wohner
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Publication number: 20120003129Abstract: A pipette for a pipette system comprising a pipette and a syringe. The pipette housing has a longitudinal axis. A syringe to be handled with the pipette is insertable with its fastening portion and plunger head into the pipette housing and is removable or discardable from said pipette housing in the direction of the longitudinal axis of the pipette housing, i.e., axially. The syringe has as cylinder and a plunger with a plunger head which projects out of the end of the cylinder even when the plunger has been completely inserted into the cylinder. A pipette housing comprises an axially accessible plunger gripping device for the plunger head of the syringe. An actuating device for the plunger gripping device is mounted on the plunger displacing device and is axially displaceable with said adjusting device.Type: ApplicationFiled: July 1, 2011Publication date: January 5, 2012Applicant: BRAND GMBH + CO KGInventors: Renate REMPT, Dieter BÖHM, Steffen GEHRIG, Ottmar KNEUCKER
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Patent number: 8011257Abstract: A multichannel pipette, including a grip part defining a longitudinal axis and including a piston-driving device movable axially thereon, a displacement part rotating about the axis and having cylinder and piston arrangements, and a connection device for detachably connecting the grip part to the displacement part and permitting a rotation of the displacement about the longitudinal axis. The connection device includes threaded connection elements engaged with one another. The pistons move axially to the cylinders via a piston-driving device. A connection part of the threaded elements is axially connected with the cylinders and includes a clearance for a rotary bearing provided therein. Form-fit configurations on the support and connection parts are engaged to prevent a reverse rotation of the connection part relative to the support part. By a manual release action, the form-fit configurations disengage, such that the connection part rotates in a reverse rotation relative to the support part.Type: GrantFiled: February 1, 2008Date of Patent: September 6, 2011Assignee: Brand GmbH + Co KGInventors: Ottmar Kneucker, Michael Ertl