Piston And Cylinder Patents (Class 73/864.16)
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Patent number: 11833519Abstract: Instrument free “plasticware” is provided that enables multi-step molecular reactions in a diagnostics context. A hollow plunger that is movable within a surrounding tube defines a reaction chamber inside the plunger. By moving the plunger to different positions in the tube, a sample can be collected, then the sample can be washed, and finally the reaction chamber can be sealed to perform diagnostic reactions on the sample. The juxtaposition of large sample collection/washing volume with small reaction volume allows one to conduct a wide range of diagnostic assays including a LAMP (Loop mediated isothermal amplification) based saliva test in a small, portable self-contained device. Applications include Molecular diagnostics for health applications (including COVID19 test), Environmental Monitoring, Disease surveillance, and Veterinary health.Type: GrantFiled: April 26, 2021Date of Patent: December 5, 2023Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Manu Prakash, Anesta Kothari, Adam George Larson, Shailabh Kumar, Hazel Soto-Montoya
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Patent number: 11280805Abstract: A robot accessory and/or device that provides a sample collector device, a sample storage device, and a work surface. Upon activation, the sample collector device performs a full cycle in which an actuator causes the movement (i.e., extension and then retraction) of an actuator arm that simultaneously causes the top link plate, the lance plunger, the plunger guide, and the plunger to likewise move, including the depression and/or compression and release of the pipette. During this full cycle, this single device is able to remotely collect solid, liquid and/or multiphase samples of potentially hazardous materials and reduces human exposure to this hazardous material and dangerous environment.Type: GrantFiled: April 17, 2019Date of Patent: March 22, 2022Assignee: Chemthief, LLCInventors: Larry Richard Houghton, II, Gordon Scott Johns, David Lambert Buck
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Patent number: 10168343Abstract: A processing system for processing experiment of biochemistry, biology and/or biotechnology includes a manual pipette which includes a piston and suctions and discharges liquid when the piston of the manual pipette is moved by external drive force, an automatic pipette which includes a piston and a built-in actuator and suctions and discharges liquid when the piston of the automatic pipette is moved by the actuator, a robot including a robotic arm which selects and grasps the manual or automatic pipette based on an operation command, and a robotic arm control device including circuitry which controls the robot such that the robotic arm selects and grasps the manual or automatic pipette based on the operation command. The operation command includes a collection of jobs that controls processes for processing a processing target in an experiment of biochemistry, biology and/or biotechnology and a container containing the processing target in a processing order.Type: GrantFiled: July 21, 2016Date of Patent: January 1, 2019Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Kohei Miyauchi, Makoto Umeno, Jiro Muraoka
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Patent number: 9421327Abstract: A dosing unit for an infusion pump device is disclosed having a piston pump with a pump cylinder and a plunger arranged within said cylinder, coaxially arranged along a longitudinal axis. The plunger has a shaft with a thread and the cylinder has a threaded sleeve part with a thread. The two threads engaging with each other in such a way that a rotational movement of the plunger around the longitudinal axis results in an additional linear displacement of the plunger along said longitudinal axis. A separate bias force element biases the two threads in regard to each other along the longitudinal axis, such that the threaded engagement of inner thread and outer thread is free of play independent of a direction of a rotational movement and linear displacement of the plunger in regard to the cylinder.Type: GrantFiled: February 28, 2014Date of Patent: August 23, 2016Assignee: Roche Diagnostics International AGInventors: Hanspeter Niklaus, David Teutsch, Ulrich Haueter
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Patent number: 9352319Abstract: A droplet dispensing apparatus has a piston rod driven by a solenoid, the rod for connection to a piston of a droplet dispensing syringe, in which the output member from the solenoid is directly connected to the rod through the entire impulse produced by the solenoid.Type: GrantFiled: July 24, 2013Date of Patent: May 31, 2016Assignee: TTP LabTech LimitedInventors: Anthony Douglas, Gary Cochrane
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Patent number: 9295986Abstract: A pipette for use with pipette tips in which a set metering volume is secured in that the locking body is arranged on the circumference of the annular cylindrical locking element when it is in the locking position. Through this, the transmission part which the locking element comprises on the outer circumference is held fast. The annular cylindrical locking element can be formed separately from a toothed ring for driving a counter mechanism. Thus, it is possible to perform the locking in arbitrary positions or in more selectable rotational positions than in the conventional locking equipment, where a locking element engages into the toothed ring for driving the counter mechanism.Type: GrantFiled: April 30, 2013Date of Patent: March 29, 2016Assignee: EPPENDORF AGInventors: Jens Wilmer, Ingo Winter
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Publication number: 20150128685Abstract: The invention relates to a sampler for providing a sample for high-performance liquid chromatography, in which a volume of liquid to be taken up into a cylinder can be aspirated by means of a first drive and can be compressed to a high pressure level by means of a second drive independent of the first drive or can be decompressed from this level in a controlled manner.Type: ApplicationFiled: November 5, 2014Publication date: May 14, 2015Inventors: Adolf SATZINGER, Hermann HOCHGRAEBER, Thomas Armin Alexander EICHHORN
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Publication number: 20150013476Abstract: An electronic pipette comprising a piston actuated in a cylinder by a motor, a control system for carrying out pipette operations, and a user interface for operating the pipette, wherein the user interface comprises at least one touch screen for operating the pipetting operations of the pipette, which touch screen comprises at least one touching or pressing area for operating the pipetting operations of the pipette. The invention also relates to a method for operating an electronic pipette and a use of a touch screen as a part of a user interface of an electronic pipette for operating the pipetting operations of the pipette.Type: ApplicationFiled: February 8, 2013Publication date: January 15, 2015Inventors: Juha Telimaa, Mikael Lind
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Patent number: 8900526Abstract: The present invention relates to a device for manually metering liquids, for example a pipette or a metering button. The device comprises a joint forming a seal between a hollow cylinder and a piston housed inside the cylinder, the piston being moved vertically so as to suck in or expel the liquid. During the metering operation, the joint remains fixed with respect to the movement of the piston and comprises parts formed by portions having dedicated geometric and mechanical characteristics which make it possible to locally optimize the functions of sliding, sealing and fastening in the cylinder.Type: GrantFiled: April 7, 2009Date of Patent: December 2, 2014Assignee: Socorex Isba S.A.Inventor: Jean-Pierre Uldry
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Publication number: 20140331794Abstract: An electronic pipette comprising a piston actuated in a cylinder by a motor, a control system for carrying out pipette operations, and a user interface for operating the pipette, wherein the user interface comprises features for defining at least one dilution variable for pipetting operations based on input pipetting operation variables of which one is dilution ratio.Type: ApplicationFiled: May 13, 2014Publication date: November 13, 2014Applicant: Thermo Fisher Scientific OyInventors: Suvi Berghall, Juha Telimaa, Mikael Lind
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Patent number: 8839685Abstract: A syringe for use with a dosing device with a receiver for a syringe cylinder and an axially displaceable plunger receiver for a syringe plunger with a syringe cylinder, which has a floor with an outlet on the bottom, a cylindrical plunger run area on the inside and has means for being held in the receiver on the top, a syringe plunger, which has a circumferential plunger seal for sealing on the plunger run area on the perimeter and a coupling piece for insertion into the plunger receiver on the top and stop means between the syringe cylinder and the syringe plunger, which restrict the displacement of the syringe plunger towards the floor so that the syringe plunger with the plunger seal can only approach to a certain distance from the floor.Type: GrantFiled: August 17, 2011Date of Patent: September 23, 2014Assignee: Eppendorf AGInventor: Jürgen Löhn
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Patent number: 8802030Abstract: A capillary dispenser includes at least one plunger-cylinder unit having a cylinder module and a plunger module disposed together on an axis. The cylinder module has an inner cylinder that is pneumatically connected to at least one capillary. The plunger module includes a hollow plunger that is closable on one side and is movable in the inner cylinder along the axis between an upper end position and a lower end position of the plunger module.Type: GrantFiled: February 1, 2012Date of Patent: August 12, 2014Assignee: Cybio AGInventor: Adrian Siemers
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Patent number: 8758705Abstract: The dispenser includes a dispensing head extending downward from a cylinder body section with a cylindrical inner space and having a dispensing cylinder with the diameter smaller than that of the inner space of the cylinder body section; a piston capable of being inserted from the inner space of the cylinder body section into the dispensing cylinder section and moving up and down between a dispensing start position located in an upper portion of the dispensing cylinder section and a dispensing end position in a lower portion of the dispensing cylinder section; and a sucking mechanism sucking a liquid from a dripping port at a tip of the dispensing cylinder section up to a position above the dispensing start position inside the inner space of the cylinder body section. The piston is always at the dispensing start position under a liquid surface whenever the dispensing operation is started.Type: GrantFiled: August 30, 2011Date of Patent: June 24, 2014Assignee: Medicatec Kabushiki-KaishaInventor: Hiroyasu Tsukioka
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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: 8728408Abstract: The nozzle (3) is in its lower part formed respectively for receiving a pipette exchangeable tip (19) and is in its upper part releasably connected with the holder (2). In the holder (2) a pressure sleeve (6) is placed as being slidably borne in the holder (2). The pressure sleeve (6) is via a pressure sub-assembly seated in the holder (2) pressed to the sealing means placed between the pressure sleeve (6) and the nozzle (3). The plunger (1) is slidably borne in the pressure sleeve (6) and in the pressure sub-assembly. Due to this, leakproofness of the plunger (1) in the nozzle (3), which is indispensable for a correct and reliable pipette operation, is provided in PIPETTING, ADJUSTMENT or CALIBRATION MODES of the pipette. Simultaneously, in MAINTENANCE MODE of the pipette the sealing means automatically slide out from an abutting surface (2c) of the holder (2).Type: GrantFiled: April 22, 2010Date of Patent: May 20, 2014Assignee: PZ HTL SPOLKA AKCYJNAInventor: Tomasz Strzelczyk
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Patent number: 8685342Abstract: A device for receiving and dispensing liquids has a plurality of piston-cylinder units (1, 1?, 1?) which are respectively arranged on a piston plate (2) and a cylinder plate (3). The liquid is received and dispensed by displacing the pistons (1?) in the cylinders (1?) by changing the distance between the plates (2, 3), perpendicularly to the plate planes, by means of a drive mechanism (6) and a plate guiding system. The volume can be determined by an upper abutment (4) and a lower abutment (5), at least one of said abutments being regulatable by a regulating means (8). The device is suitable for handling precise volumes of a larger number of piston-cylinder units (1, 1?, 1?) in a technically simple manner.Type: GrantFiled: June 15, 2010Date of Patent: April 1, 2014Inventors: Bernd Steinbrenner, Roger Steinbrenner
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Patent number: 8679421Abstract: A dispensing device and an analyzer capable of improving dispensing accuracy as well as improving jamming detection accuracy can be realized by having a short distance between a syringe and a suction tip. The dispensing device 10 includes an upper fixed unit 10A, a lower movable unit 10B which is connected to the upper fixed unit 10A, the movable unit being relatively movable with respect to the upper fixed unit 10A, and a Z-axis movement mechanism 55Z which moves the upper fixed unit to and fro. A syringe 4 and a plunger 13 are held by the upper fixed unit 10A. A tip nozzle 8 is attached to the lower movable unit 10B. An interior space of the syringe 4 and an interior space of the tip nozzle 8 are connected with each other by a connection tube 1 having flexibility.Type: GrantFiled: July 15, 2010Date of Patent: March 25, 2014Assignee: Hitachi High-Technologies CorporationInventors: Minoru Sano, Kazutoshi Onuki, Yoshiyuki Shoji, Isao Yamazaki
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Patent number: 8661920Abstract: A handheld pipetting apparatus for metering liquids, with a handleable pipette housing, at least one accommodation for a fastening portion of a syringe cylinder of a syringe, at least one plunger accommodation in an accommodation body for a plunger fastening portion of a syringe plunger of the syringe, syringe and plunger gripping levers for detachably holding the fastening portion in the accommodation and the plunger fastening portion in the plunger accommodation, at least one displacement device with a displacement chamber and a shiftable chamber wall limiting the same, for displacing a fluid; at least one seat for detachably holding a pipette point, a channel, connecting a hole in the seat with a displacement chamber, and at least one drive device, which is connected to couplable with the accommodation body the and/or the chamber wall, for shifting the accommodation body with respect to the accommodation, the and/or the chamber wall with respect to the displacement chamber.Type: GrantFiled: September 22, 2010Date of Patent: March 4, 2014Assignee: Eppendorf AGInventors: Peter Molitor, Karl-Friedrich Andres, Steffen Hofmann, Heinz-Gerhard Köhn
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Patent number: 8656792Abstract: A pipette device including a metering liquid receptacle designed to be filled, at least in part, with working fluid and which has a pipette opening as a first tapering of cross-section of flow, a pressure change device which is designed to change the pressure of the working fluid in the metering liquid receptacle, and a throttle point in a pipette duct designed to be filled with working fluid as a further tapering of cross-section of flow. The throttle point is arranged fluid-mechanically between the metering liquid receptacle and the pressure change device and is dimensioned in such a way that a ratio of a flow resistance of the pipette opening for dispensed metering liquid to a flow resistance of the throttle point for working fluid, which flows through the throttle point when the metering fluid is dispensed, is less than 0.5.Type: GrantFiled: July 26, 2011Date of Patent: February 25, 2014Assignee: Hamilton Bonaduz AGInventors: Vinzenz Kirste, Helmut Knapp, Urs Lendenmann, Noa Schmid, Tobias Seiler, Fabian Winter
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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: 8623641Abstract: In a general aspect, an apparatus for washing biological material is provided which includes an outer sleeve, and an inner sleeve disposed within the outer sleeve. The outer sleeve has an open end for receiving the biological material, and an opposed closed end. The inner sleeve is detachably and slidably positioned within the outer sleeve, and includes a first port for receiving and dispensing washing liquid, a second port defining a liquid flow path between an interior of the inner sleeve and an interior of the outer sleeve, and a filter disposed in the second port. The filter allows passage of washing liquid but not passage of the biological material therethrough. A chamber, formed between the filter and the closed end of the outer sleeve, is configured to permit flow of washing liquid via the filter while retaining the biological material therein.Type: GrantFiled: April 17, 2008Date of Patent: January 7, 2014Assignee: Industrial Technology Research InstituteInventors: Chung-Nun Chen, Chun-Jen Liao, Chin-Yu Lin, Chin-Fu Chen, Yung-chih Wu
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Patent number: 8616076Abstract: Testing the reliability of flexible separators arranged under conditions enabling the cycling rate of testing to be accelerated. According to the invention, two separators are enclosed in two rigid chambers, each defining a liquid capacity and a gas capacity. The two gas capacities communicate with each other, and each of the liquid capacities communicates with means for causing the volume of each of them to vary in alternation.Type: GrantFiled: December 1, 2010Date of Patent: December 31, 2013Assignee: Olaer IndustriesInventor: Alain Houssais
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Publication number: 20130283884Abstract: A pipette includes a movable piston and a diaphragm that at least partly defines a fluid chamber enclosing a volume of working fluid. The piston displaces a volumetric amount of the working fluid in the chamber when moved. In response, the diaphragm displaces a smaller volumetric amount of fluid outside the chamber. A deamplification ratio is defined by the ratio of the volume displaced by the diaphragm to the volume displaced by the piston. The deamplification ratio is adjustable by adjusting or changing the diaphragm and/or by adjusting the size of the fluid chamber. The deamplifying pipette enables measuring and dispensing of very small volumes of liquid and is easily adapted to commercially available pipette components. Pipette components such as a pipette tip or adaptor may include a diaphragm to enable deamplification of the nominal volume capacity of a given pipette device.Type: ApplicationFiled: April 30, 2013Publication date: October 31, 2013Applicant: The Regents of the University of MichiganInventors: Justin Douglas Beroz, Anastasios John Hart
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Patent number: 8570029Abstract: A metering apparatus for liquids and a method for metering liquids which facilitate the operation of a further metering after detaching the pipette point or syringe.Type: GrantFiled: October 28, 2010Date of Patent: October 29, 2013Assignee: Eppendorf AGInventors: Karl-Friedrich Andres, Peter Molitor, Peter Schmidt
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Patent number: 8557200Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter thus reducing the injuries resulting in repetitive stress injury to the thumb and hand. The new ergonomic pipette tip incorporates a separate sealing member constructed from an elastomer that is coupled to the more rigid and chemically inert elongated tubular member that becomes the receptacle for transferring the fluid sample aspirated by the pipetter. The new elastomeric sealing member allows for greater sealing capability or squeeze between the pipetter barrel and the new pipette tip while lowering the coefficient of friction between the mating parts, thus decreasing the axial ejection forces require to overcome the breakaway friction between the new ergonomic pipette tip and the pipetter.Type: GrantFiled: May 4, 2012Date of Patent: October 15, 2013Inventor: James C. Smith
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Publication number: 20130239667Abstract: A syringe with a syringe cylinder and a syringe, with a seat for the syringe cylinder and an axially displaceable piston seat for the syringe piston, comprising an encoding on the syringe cylinder with encoding elements as protrusions and deepenings at seven encoding positions, checking elements in the form of further protrusions and further deepenings at seven checking positions, each being disposed between two encoding positions, wherein the encoding elements and the checking elements have six protrusions in total, and a guiding structure to align the syringe on a further guiding structure with each encoding element and with each checking element to a sensing element, said further guiding structure being disposed in the seat of the metering device and having a certain position with respect to an annular sensing device for sensing the encoding by sensing elements of the metering device that are across the circumference.Type: ApplicationFiled: September 13, 2012Publication date: September 19, 2013Applicant: EPPENDORF AGInventor: Jürgen Löhn
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Patent number: 8529848Abstract: A system for preparing biological sample contains a body including a proximal side and a distal side, a plurality of mandrels, a plurality of resilient elements, a plurality of fluid dispensers, and one or more samples. The mandrels are moveably positioned within the body, where each resilient element engages a respective one of the mandrels. Each of the fluid dispensers is configured to engage a distal end of a corresponding one of the mandrels. Each sample comprises a solution containing one or more nucleic acid sequences contained within at least one of the fluid dispensers.Type: GrantFiled: June 28, 2011Date of Patent: September 10, 2013Inventors: Ronald Danehy, Jorge Fonseca, Jayanthi Prasad
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Patent number: 8524170Abstract: A sealing pipette tip includes features to seal the tip directly against the piston in an air displacement pipette, avoiding the need for a piston seal within the pipette. This configuration reduces potential points of failure, allows the pipette-tip interface to be optimized, and improves liquid handling characteristics of the pipette.Type: GrantFiled: February 22, 2011Date of Patent: September 3, 2013Assignee: Rainin Instrument, LLCInventor: James S. Petrek
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Patent number: 8475741Abstract: Provided is a droplet discharging device that can precisely dispense large flow rate of droplets and small flow rate of droplets selectively. The droplet discharging device according to the present invention includes a pneumatic discharger for discharging a droplet having a first flow rate, and an electronic pipette for discharging or sucking a droplet having a second flow rate equal to or smaller than the first flow rate. The pneumatic discharger includes, i) a storage chamber for storing a liquid, ii) an air tank connected to the storage chamber through a first air pipe and supplying compressed air to the storage chamber to push the liquid of the storage chamber outside, and iii) a first nozzle connected to the storage chamber through the liquid pipe and receiving the liquid pushed out of the storage chamber to discharge droplets.Type: GrantFiled: September 14, 2010Date of Patent: July 2, 2013Assignee: Postech Academy-Industry FoundationInventors: Seongjin Cho, Geunbae Lim, Intae Kim
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Patent number: 8408079Abstract: A pipette with a pipette housing, in which are arranged an accommodation for the fastening portion of a syringe cylinder of a syringe, a plunger accommodation in an accommodation body for a syringe plunger of the syringe, fastening devices for reversibly fixing the fastening portion and the syringe plunger in the accommodations, and plunger setting devices for shifting the accommodation body in the pipette housing, with a pull-up member for removing the accommodation body from the accommodation, and an actuation member for drawing the accommodation body near to the accommodation.Type: GrantFiled: September 5, 2008Date of Patent: April 2, 2013Assignee: Eppendorf AGInventors: Burkhardt Reichmuth, Herbert Belgardt, Klaus Schuerbrock
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Patent number: 8398934Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The first magnetic coupler and second magnetic coupler may be configured to exert an attractive force. A bearing between the magnetic couplers reduces friction and side loading.Type: GrantFiled: August 6, 2012Date of Patent: March 19, 2013Assignee: Ivek CorporationInventor: Douglas S. Bensley
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Patent number: 8322577Abstract: A plunger for a syringe used to inject gas and liquid chromatography samples has an end portion surrounded by a flexible sleeve. The sleeve forms a seal in the bore of a barrel traversed by the plunger, the bore being in fluid communication with a cannula attached to the end of the barrel. The plunger has an end surface that is exposed and is flush with an annular end surface of the sleeve. The plunger end surface, and not the sleeve, contacts the cannula upon injection and avoids imposing cyclical hoop stresses on the barrel which tend to crack the barrel after a finite number of cycles. In a further embodiment, a thin layer of sleeve material covers the end surface of the plunger. The thin layer avoids inducing significant barrel stress.Type: GrantFiled: April 24, 2009Date of Patent: December 4, 2012Assignee: Agilent Technologies, Inc.Inventor: Ponna Pa
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Publication number: 20120255378Abstract: The dispenser includes a dispensing head extending downward from a cylinder body section with a cylindrical inner space and having a dispensing cylinder with the diameter smaller than that of the inner space of the cylinder body section; a piston capable of being inserted from the inner space of the cylinder body section into the dispensing cylinder section and moving up and down between a dispensing start position located in an upper portion of the dispensing cylinder section and a dispensing end position in a lower portion of the dispensing cylinder section; and a sucking mechanism sucking a liquid from a dripping port at a tip of the dispensing cylinder section up to a position above the dispensing start position inside the inner space of the cylinder body section. The piston is always at the dispensing start position under a liquid surface whenever the dispensing operation is started.Type: ApplicationFiled: August 30, 2011Publication date: October 11, 2012Applicant: MEDICATEC KABUSHIKI-KAISHAInventor: Hiroyasu TSUKIOKA
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Patent number: 8147773Abstract: A fluid dispenser useful in automated biological reaction systems comprising a barrel having a reservoir chamber, the barrel having an upper portion and a lower portion, a cap located on top of the upper portion of the barrel and connected to the reservoir chamber, the cap having an external surface with at least one hole therethrough, a valve comprising a biasing member and a hole sealer, the valve being located in the hole in the cap at the point where a downward force is applied against the cap, a coupler having a dispense chamber, the coupler being coaxial with the barrel and wherein the barrel lower portion moves into the dispense chamber during dispensing of fluid, and a vent located between the cap and the reservoir chamber, the vent including a vent opening and a vent material composed of oliophobic material.Type: GrantFiled: March 17, 2011Date of Patent: April 3, 2012Assignee: Ventana Medical Systems, Inc.Inventors: Charles D. Lemme, Vincent R. Rizzo, Jr., Bobbi Druyor-Sanchez, Anthony Ford, Bronwen Heilman, Darin McDaniel, Brian McGraw, Stephen Mead, William Richards, Wayne Showalter
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Patent number: 8133453Abstract: A plunger stroke pipette for replaceable pipette points with a seat for the detachable mounting of a pipette point, a plunger, a cylinder in which the plunger is movably arranged, a connection channel connecting the cylinder with an opening in the seat, a driving equipment, coupled to the plunger for displacing the plunger in the cylinder, an upper stopper and a lower stopper and at least one counter-stopper of the driving equipment and/or the plunger for limiting the stroke of the plunger, a holder, holding the lower stopper, an overstroke spring between the upper stopper and the holder, an adjustment equipment for adjusting the position of the holder with respect to the cylinder, and an indicating equipment for indicating the position of the holder.Type: GrantFiled: May 31, 2006Date of Patent: March 13, 2012Assignee: Eppendorf AGInventor: Peter Molitor
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Patent number: 8122779Abstract: A hand-held electronic pipettor is designed particularly to be programmed and operated with one hand for the convenience of the user. It uses a capacitance touchpad control for programming, and a separate run button for the operating mode. Internal components are located so that the center of gravity of the pipettor is located within the palm of the user. Flash memory stores an empirically derived table that correlates aspiration volume to motor steps and a separate empirically derived table the correlates dispensing volumes to motor steps.Type: GrantFiled: April 13, 2009Date of Patent: February 28, 2012Assignee: Integra Biosciences Corp.Inventors: Gary E. Nelson, George P. Kalmakis, R. Laurence Keene, Joel Novak, Kenneth Steiner, Jonathon Finger, Gregory Mathus, Richard Cote
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Patent number: 8117928Abstract: This invention relates to a method for selecting a plunger-cylinder tip of a pipette and a device for carrying out the method. In the method, the dose size is entered into the control electronics of the pipetting device; the dose size is stored in the control electronics; the amount of doses is entered; and on the basis of the dose size and the amount of doses, the control electronics indicates suitable available interchangeable components on the display.Type: GrantFiled: April 25, 2007Date of Patent: February 21, 2012Assignee: Biohit OyjInventors: Osmo Suovaniemi, Erkki Vesanen
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Patent number: 8117927Abstract: A pipette is provided. The pipette includes a body, a piston, and a valve. The body includes a nozzle, a first chamber, a second chamber, and a channel formed in the nozzle. The first chamber is isolated from the second chamber, and the channel is isolated from the first chamber and the second chamber. The piston is mounted to slide within the first chamber and the second chamber so that movement of the piston simultaneously increases a first volume of the first chamber and decreases a second volume of the second chamber. The valve is in communication with the first chamber, the second chamber, the channel, and an exterior of the body to selectively provide a communication between the first chamber and the channel, between the second chamber and the channel, between the first chamber and the exterior of the body, and between the second chamber and the exterior of the body.Type: GrantFiled: December 15, 2009Date of Patent: February 21, 2012Assignee: Gilson SASInventors: Frédéric Millet, Hervé Malvoisin
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Publication number: 20120017704Abstract: Pipette device (10), at least for dispensing metering liquid by increasing the pressure of a working fluid, comprising a metering liquid receptacle (38) which is filled, at least in part, with working fluid and has a pipette opening (36) as a first tapering of cross-section of flow, through which metering liquid can be dispensed from the metering liquid receptacle (38) as a function of the pressure of the working fluid, and comprising a pressure change device (40) which is designed to change the pressure of the working fluid in the metering liquid receptacle (38), wherein the pipette device (10) comprises a throttle point (42) in a pipette duct (12) filled with working fluid during normal operation as a further tapering of cross-section of flow, said throttle point being arranged fluid-mechanically between the metering liquid receptacle (38) and the pressure change device (40) and being dimensioned in such a way that a ratio of a flow resistance (R1) of the pipette opening (36) for dispensed metering liquid tType: ApplicationFiled: July 26, 2011Publication date: January 26, 2012Applicant: Hamilton Bonaduz AGInventors: Vinzenz KIRSTE, Helmut Knapp, Urs Lendenmann, Noa Schmid, Tobias Seiler, Fabian Winter
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Patent number: 8088342Abstract: The invention provides hand-held pipettor in accordance with an embodiment that includes a piston that is received in one end of a cylinder, a pipettor tip that is removably secured to an opposite end of said cylinder, a manually driven unit that reciprocates the piston through a selected stroke to aspirate fluid into and to expel the thus aspirated fluid from the pipettor tip, a mechanism including a stepper motor responsive to control signals for adjusting a range of the stroke, and a voice recognition system that decodes verbal commands and outputs the result to a central processing unit, which in turn generates the control signals.Type: GrantFiled: March 16, 2005Date of Patent: January 3, 2012Assignee: Matrix Technologies CorporationInventors: Richard Cote, Robert Henry Zier
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Patent number: 8028592Abstract: An electronic metering apparatus for metering liquids, with a longitudinal, handleable housing, a drive, arranged in the housing, with an electric motor, at least one displacer device, arranged in the housing or being capable to be arranged on the same, with a displacer element, which is connected to the drive and/or connectable to the same, at least one holding device on the bottom end of the housing for holding a pipette point or a syringe, at least one electric operational control in or on the housing, at least one electric information device in or on the housing, an electric control unit arranged in the housing, which is connected to the electric motor, the electric operational control and the electric information device, and which controls the information device depending on the position and/or previous changes of the position of the displacer element, in order to put out an information concerning the next reasonable dislocation of the displacer element, and an electric power supply.Type: GrantFiled: August 3, 2007Date of Patent: October 4, 2011Assignee: Eppendorf AGInventors: Peter Molitor, Karl-Friedrich Andres, Peter Schmidt
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Patent number: 8028591Abstract: Systems and methods are provided that can include a storage and retrieval robot operating under program control to extract a selective number of support beads from a storage or retainment region, for dispensing to titer wells or other vessels for assays and other purposes. According to various embodiments, the storage and retrieval robot can position a capture device over any one or more storage wells containing oligonucleotide or other material support beads, and withdraw or extract those support beads into a collection tube under vacuum pressure or other force. According to various embodiments, a selected number of support beads can be extracted, using a linear motor piston to limit available space for support bead insertion. According to various embodiments, the collected support beads can be dispensed into one or more destination tubes, wells, or other containers, surfaces, vessels, receptacles or mixture containment region, for use in assays or other purposes.Type: GrantFiled: May 11, 2007Date of Patent: October 4, 2011Assignee: Applied Biosystems LLCInventor: Charles S. Vann
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Patent number: 8030063Abstract: An apparatus for vitrifying a biological specimen includes a cap member, a tubular plunger, and a specimen chamber. The cap member includes a stem portion integrally formed with a receiving portion. The receiving portion has a disc-like shape and includes an outer surface. The outer surface includes a first skirt member comprised of a heat-sealable material. The first skirt member is attached along a circumferential portion of the outer surface. The specimen chamber has an open first end portion, a closed second end portion, and a cavity extending between the first and second end portions. The cavity is defined by oppositely disposed inner and outer surfaces. The specimen chamber further includes a second skirt member comprised of heat-sealable material. The second skirt member is attached along a circumferential portion of the outer surface.Type: GrantFiled: June 18, 2009Date of Patent: October 4, 2011Assignee: The Cleveland Clinic FoundationInventors: Amr Farouk Abdel Kader, Tomasso Falcone, Helmuth Kotschi
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Publication number: 20110181272Abstract: A metering apparatus for liquids and a method for metering liquids which facilitate the operation of a further metering after detaching the pipette point or syringeType: ApplicationFiled: October 28, 2010Publication date: July 28, 2011Applicant: EPPENDORF AGInventors: Karl-Friedrich Andres, Peter Molitor, Peter Schmidt
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Patent number: 7947234Abstract: A handheld multichannel pipette includes multiple fluid-handling nozzles and a rotary adjustment mechanism for adjusting the width of a pattern of nozzles while maintaining equal spacing between pairs of nozzles. Embodiments of the adjustable-spacing multichannel pipette include an adjustable stop mechanism.Type: GrantFiled: October 17, 2007Date of Patent: May 24, 2011Assignee: Rainin Instrument, LLCInventors: Kenneth P. O'Connell, Nicholas R. Vitale
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Patent number: 7947512Abstract: The invention relates to a dispensing cylinder, a large capacity dispensing device, and a method of using a large capacity dispensing device, and aims at providing a dispensing cylinder, a large capacity dispensing device, and a method of using a large capacity dispensing device, with high quantitativity and capable of suppressing the scale of the device and efficiently utilizing working space, despite the relatively large volumes of fluid handled. The construction comprises: a small diameter section, a large diameter section which communicates with the small diameter section and is capable of holding fluids, a sliding section provided in a slidable manner within the large diameter section which enables fluid to be sucked and discharged to and from the large diameter section through the small diameter section, and a connection section which connects the sliding section in a detachable manner to a suction and discharge mechanism which drives the sliding section.Type: GrantFiled: April 15, 2004Date of Patent: May 24, 2011Assignee: Universal Bio Research Co., Ltd.Inventors: Hideji Tajima, Yoshinao Hirahara
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Patent number: 7914462Abstract: A system for making cell blocks includes a cell block cassette and processing station, the cassette including a main body having a having a collection aperture formed therein and a filter assembly removably attached to the main body, the filter assembly defining a collection well in communication with the collection aperture, and having a filter positioned across a bottom surface of the collection well, the filter configured to retain cellular matter carried in a fluid that is dispensed into the collection well and flows across the filter. The cell block processor has a cassette interface removably seating the cell block cassette, and a sensor positioned or positionable to detect and monitor a fluid level in the collection well.Type: GrantFiled: August 15, 2007Date of Patent: March 29, 2011Assignee: Cytyc CorporationInventors: Timothy Hutchins, Hal Watts, Steven Scampini, Eric Grimes, Andrew H. Fischer
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Patent number: 7819030Abstract: A hybrid manual-electronic pipette combines a manually driven piston with real-time electronic measurement of liquid volume and piston displacement while compensating for both pipette-specific and pipette model-specific variations. The hybrid nature of the pipette facilitates increased accuracy and improved ease of use, and enables additional functionalities not practicable with traditional manual pipettes.Type: GrantFiled: September 27, 2007Date of Patent: October 26, 2010Assignee: Rainin Instrument, LLCInventors: Haakon T. Magnussen, James S. Petrek, William D. Homberg
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Publication number: 20100266454Abstract: A metering device for utilisation with a syringe, which features on a syringe cylinder a fastening portion with at least one axially directed sensing surface projecting from the upside, and at least one alignment nose projecting from the outer perimeter of the fastening portion, and a plunger with a plunger rod, the metering device having an accommodation for the fastening portion of the syringe cylinder, the accommodation having an axial opening for axially inserting the fastening portion into a fastening position, a sensing device disposed in the accommodation with at least one sensing means projecting from a basis surface of the sensing device facing the axial opening, for sensing the at least one sensing surface of a fastening portion inserted in a fastening position.Type: ApplicationFiled: March 30, 2010Publication date: October 21, 2010Applicant: EPPENDORF AGInventor: Burkhardt REICHMUTH
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Patent number: 7788986Abstract: A hybrid manual-electronic pipette combines a manually driven piston with real-time electronic measurement of liquid volume and piston displacement while compensating for both pipette-specific and pipette model-specific variations. The hybrid nature of the pipette facilitates increased accuracy and improved ease of use, and enables additional functionalities not practicable with traditional manual pipettes.Type: GrantFiled: September 27, 2007Date of Patent: September 7, 2010Assignee: Rainin Instrument, LLCInventors: Haakon T. Magnussen, James S. Petrek, William D. Homberg, Christian K. Apple