Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 8117927 | Pipette providing sampling via back-and-forth movement of the piston 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 ... | 02/21/2012 |
| 7413711 | System for dispensing a precise amount of fluid A dispensing system delivers a precise amount of fluid for biological or chemical processing and/or analysis. Dispensing means moves the fluid. The dispensing means is operated by a pneumatic force. Connection means delivers the fluid to the desired location. An act... | 08/19/2008 |
| 7396512 | Automatic precision non-contact open-loop fluid dispensing A rugged, all-electronic fluid dispensing system for use with pipettes or in other contexts indirectly measures fluid flow by using a non-linear system model to correlate vacuum existing at the top of a column of suspended fluid. Non-contact operation is provided to... | 07/08/2008 |
| 7367243 | Traps and vents in flow-through pipet This invention relates generally to a volumetric pipet used to make a volumetric measurement and transfer a measured amount of liquid. More specifically the invention relates to a pipet that fills from the top, works well with automated systems because it does not r... | 05/06/2008 |
| 7288228 | Sample injection system An HPLC injection valve is mounted to a probe drive system close to the probe axis to minimize probe movements required for sample injections into a mobile phase column. The probe is directly connected by a short conduit to the injection valve, eliminating the need ... | 10/30/2007 |
| 7275416 | Volumetric densiometer flask A volumetric densiometer flask for determining the volumetric density of a solute includes: (a) a first bulbous portion in a lower end section of the flask; (b) a second bulbous portion in an upper end section of t... | 10/02/2007 |
| 7182915 | Pipette configurations and arrays thereof for measuring cellular electrical properties The present application is directed to pipette configurations, arrays of the same and methods for using such pipettes and arrays to accomplish electrical measurements, including whole cell and on cell measurements. In one aspect of the present invention, a pipette i... | 02/27/2007 |
| 7159740 | Method and apparatus for parallel dispensing of defined volumes of solid particles A sample preparation system provides an automated process that dispenses appropriate amounts of solid material into wells of a microtiter plate for mixing into a suspension. The system utilizes an array of hollow tubes that are lowered into a particle reservoir such... | 01/09/2007 |
| 7077018 | Cleanable volume displacement pipetter A volume displacement pipette that includes a channel within the piston. The channel allows for cleaning fluids to be continuously run through the pipette tip for cleaning the tip. One end of the channel may be closed during normal operation of the pipette. Multiple... | 07/18/2006 |
| 7073401 | Liquid measuring device A liquid measuring device is described for carrying out the assay using a gas or vapor permeable but liquid impermeable membrane barrier to control the volume of liquid to be measured or transferred. The membrane may be used in any instance where a fixed volume of l... | 07/11/2006 |
| 6997068 | Foot-operated pipette dispenser A pipette dispenser unit having a hand-held pipette dispenser having a pipette connector and a handle, a source of positive and negative air pressure in fluid connection with said pipette connector, and a foot-operated controller for regulating the flow of air betwe... | 02/14/2006 |
| 6989132 | Liquid transfer apparatus and reaction vessel A capillary 1 is moved to a position above a vessel 17 having a solution 15 stored therein. Then, the vessel 17 is raised while the inside of a tube 5 is opened to an ambient pressure until one end 1a of the capillary... | 01/24/2006 |
| 6948390 | Flow through pipet The present invention is directed to a flow through pipet for sample measurement. The pipet of the invention has a body defining an interior space for receiving a fluid. The drain line is provided to drain fluid above a drain line inlet, thereby establishing a repea... | 09/27/2005 |
| 6810923 | Pipet for liquid exchange The invention features pipets for fast and efficient liquid exchange, pipet controllers for use with such pipets, and pipetting systems utilizing pipets and/or pipet controllers of the invention. ... | 11/02/2004 |
| 6674022 | Apparatus and method for transferring and weighing powder materials using pipette transfer devices The present invention provides an apparatus for automatically transferring and weighing a powder material. The apparatus comprises a weigh station including a device for weighing the powder material in a container. A transfer device for collecting and dis... | 01/06/2004 |
| 6575209 | Proportioning head A proportioning head comprising a head plate, a multiplicity of pipette tips in plastic in a matrix array the tip apertures of which are disposed below the head plate and which are mounted at top of the head plate wherein the upper apertures of the pipett... | 06/10/2003 |
| 6544480 | Device and related method for dispensing small volumes of liquid A device and related method for dispensing liquid. The device includes a housing configured to contain a plurality of liquid dispensing members containing a liquid and configured to contain a receiving member in a receiving position to receive the liquid ... | 04/08/2003 |
| 6499364 | Tip for a suction device A top with a mantle wall defining a sample space, for receiving a liquid sample, the tip having first open end to be inserted into a liquid and a second open end for attaching the top to a suction device intended for dispensing, which tip is provided with... | 12/31/2002 |
| 6420186 | Method for depositing a flattened droplet on a surface and apparatus therefor, and a pump therefor A method and apparatus is provided for depositing a flattened droplet on a surface. The method includes the steps of providing a tube with a distal end that contains a microvolume of liquid, issuing an outgoing flow of displacement gas for slowly discharg... | 07/16/2002 |
| 6253628 | Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates A pipet gun for drawing liquids into and dispensing liquids from a pipet which includes a variable flow valve assembly. The valve assembly includes a valve which is capable of accommodating a plurality of flow rates, and which is progressively adjustable ... | 07/03/2001 |
| 6158269 | Method and apparatus for aspirating and dispensing sample fluids A method and apparatus for aspirating and dispensing a sample fluid. The apparatus includes a dilutor having a port coupled to a first port of a flow through pressure transducer and to a bleed valve. A second port of the flow through pressure transducer i... | 12/12/2000 |
| 6119533 | Sampling system with selectable pumps to communicate with reading station A blood clot detector includes a pressure transducer on an aspiration line to provide output voltage data to a microprocessor corresponding to the vacuum level during aspiration. The microprocessor integrates the vacuum readings over time during the aspir... | 09/19/2000 |
| 6060320 | Method of verifying aspirated volume in automatic diagnostic system A nethod of verifying sample volume quantifies the fluid volume aspirated and verifies sample uniformity by detecting the presence of foam or clots in the sample. After aspiration, a pressure sensor is used to measure the vacuum needed to hold up the colu... | 05/09/2000 |
| 6024925 | Systems and methods for preparing low volume analyte array elements The invention provides, in one aspect, serial and parallel dispensing tools that can deliver defined and controlled volumes of fluid to generate multi-element arrays of sample material on a substrate surface. The substrates surfaces can be flat or geometr... | 02/15/2000 |
| 5916524 | Dispensing apparatus having improved dynamic range A method and apparatus for dispensing precise quantities of reagents is disclosed including a positive displacement syringe pump in series with a dispenser, such as an aerosol dispenser or solenoid valve dispenser. The pump is controlled by a stepper moto... | 06/29/1999 |
| 5885532 | Burette apparatus There is provided a burette apparatus having a delivery tube connecting a fluid bag to a burette assembly, via a fluid entry spigot formed in an end cap assembly of the burette assembly, the end cap assembly having a bypass spigot connected to the deliver... | 03/23/1999 |
| 5874296 | Method and apparatus for liquid medium exchange The purpose of this invention is to provide a novel apparatus capable of suctioning a liquid from a container by using a vacuum. Simultaneously, the vacuum draws a second liquid from a separate source to fill a reservoir which forms part of the apparatus.... | 02/23/1999 |
| 5783451 | Pipetting unit and method for liquids A method and system for accurate aspiration and dispensing of fluids and comprising in combination a volumetric pump, a motor, a motor driver, an encoder (device used to measure angular displacements) and a computing unit.... | 07/21/1998 |
| 5775546 | Dispensing bulb A dispensing bulb having a squeezable body portion and integral squeezable neck portion having a pair of diametrically disposed vent holes. An adaptor is mounted in the neck portion and is provided with a cylindrical portion extending into the bulb neck p... | 07/07/1998 |
| 5750881 | Method and apparatus for aspirating and dispensing sample fluids A method and apparatus for aspirating and dispensing a sample fluid. The apparatus includes an air source having an output port coupled to a first port of a flow through pressure transducer. A second port of the flow through pressure transducer is coupled... | 05/12/1998 |
| 5660797 | Apparatus and method of making a pipette receptacle A pipette receptacle, or tip, which is applied to the `jet` or aspirate/blow tube of the pipette proper, wherein the receptacle has a top end with integral sections of a material different from the of the main body of the receptacle. These sections of dif... | 08/26/1997 |
| 5614153 | Pipette tip ejector A pipette tip ejector mechanism for a pipette comprising a releasable connector between a lower end of a pipette tip ejector shaft and an upper end of a pipette tip ejector arm. The connector comprises a female receptor extending from either the shaft or ... | 03/25/1997 |
| 5558838 | Sample preparation apparatus A sample preparation apparatus includes a pair of valves. A first valve selectively communicates a sample tube with a vent/aspiration valve, or alternatively communicates a diluent pump with a reaction tube. By moving the first valve, one may selectively ... | 09/24/1996 |
| 5525302 | Method and device for simultaneously transferring plural samples In a preferred embodiment, a multiple sample transfer device which includes a plurality of hollow pistons disposed in a like number of cylindrical channels and connected to a moving plate to permit simultaneous movement of the pistons. At the lower end of... | 06/11/1996 |
| 5506142 | Probe wash for liquid analysis apparatus A system for cleaning a probe used in analytic equipment--for example, that used in analysis of body fluids--in order to reduce carry-over of materials from one sample to the next. A probe wash is provided in which the simultaneous introduction of pressur... | 04/09/1996 |
| 5408890 | Portable sampling apparatus The present disclosure is directed to a method and apparatus for removing a small sized sample from a very large tanker container. The tank is closed, a valve is mounted in the deck which closes the tank, and the present apparatus attaches to that valve. ... | 04/25/1995 |
| 5364596 | Manual pipette with plunger velocity governor, home position latch and trigger release A manual pipette including user controllable latch and trigger mechanisms for releasably locking the plunger of the pipette in a "home" position ready for immersion of the pipette tip in a fluid to be drawn into the tip and further including a user contro... | 11/15/1994 |
| 5348606 | Method of making a multiple pipette sampler system A method of making a pipette sampler system for removing and transferring a plurality of liquid samples includes the step of thermoforming a plurality of identical pipettes in a first thin PVC plastic sheet utilizing a first precision die. A concave housi... | 09/20/1994 |
| 5271903 | Supercritical fluid extraction restrictor and collection system An apparatus for receiving chemical compounds carried in a high pressure effluent fluid stream from supercritical fluid extraction. The apparatus includes a heated conduit connected to supercritical fluid extraction device through which an effluent stream... | 12/21/1993 |
| 5257527 | Method and apparatus for measuring components of an ambient fluid A system for measuring components of an ambient fluid such as air. A syringe includes an intake fitting which provides sealed fluid coupling to a chromatographic intake tube. The syringe includes exhaust ports near the intake end of the syringe. The ports... | 11/02/1993 |
