Patents by Inventor David R. Friswell

David R. Friswell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9657852
    Abstract: A flow through isolation valve having a stationary member; a movable member, with a surface of the stationary member interfacing with a surface of the movable member; and at least one pin isolation valve. The pin isolation valve has a flow through internal conduit and is movable so that the internal conduit can fluidically communicate with at least one blank opening in the movable member and with a flow through internal conduit in the movable member. Movement is by rotation, linear or curvilinear translation. At least one pin isolation valve is fluidically coupled typically to a sample loop of a face seal valve, or to a pump supplying high pressure liquid to or to a column discharging liquid from a face seal valve of a high pressure liquid chromatography (HPLC) system or directly to the face seal valve.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 23, 2017
    Assignee: Waters Technologies Corporation
    Inventors: Russell Keene, David R. Friswell
  • Patent number: 8931519
    Abstract: A pin valve assembly and a method of controlling the flow of fluids comprising a pin block housing pin valves, a fluid plate with a fluid channel for fluidically communicating with the pin valves, and a fitting block housing fittings for fluidic communication with the fluid plate and for fluidic communication with fluidic components. The fluid flow through the channels of the fluid plate are controlled by the fluidic components and the pin valves.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: January 13, 2015
    Assignee: Waters Technologies Corporation
    Inventors: Russell Keene, David R. Friswell, Mark Moeller, Charles Murphy, Theodore D. Ciolkosz
  • Publication number: 20130340509
    Abstract: A flow through isolation valve having a stationary member; a movable member, with a surface of the stationary member interfacing with a surface of the movable member; and at least one pin isolation valve. The pin isolation valve has a flow through internal conduit and is movable so that the internal conduit can fluidically communicate with at least one blank opening in the movable member and with a flow through internal conduit in the movable member. Movement is by rotation, linear or curvilinear translation. At least one pin isolation valve is fluidically coupled typically to a sample loop of a face seal valve, or to a pump supplying high pressure liquid to or to a column discharging liquid from a face seal valve of a high pressure liquid chromatography (HPLC) system or directly to the face seal valve.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 26, 2013
    Applicant: Waters Technologies Corporation
    Inventors: Russell Keene, David R. Friswell
  • Patent number: 8539982
    Abstract: A flow through isolation valve having a stationary member; a movable member, with a surface of the stationary member interfacing with a surface of the movable member; and at least one pin isolation valve. The pin isolation valve has a flow through internal conduit and is movable so that the internal conduit can fluidically communicate with at least one blank opening in the movable member and with a flow through internal conduit in the movable member. Movement is by rotation, linear or curvilinear translation. At least one pin isolation valve is fluidically coupled typically to a sample loop of a face seal valve, or to a pump supplying high pressure liquid to or to a column discharging liquid from a face seal valve of a high pressure liquid chromatography (HPLC) system or directly to the face seal valve.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: September 24, 2013
    Assignee: Waters Technologies Corporation
    Inventors: Russell Keene, David R. Friswell
  • Patent number: 7955059
    Abstract: In various embodiments a fluid control device suitable for high pressure analytical instruments includes a housing having an interior surface with an end wall. The interior surface defines a chamber. A valve assembly disposed in the chamber controls the flow of fluid through the chamber. An end cap is disposed in the housing opposite the end wall to enclose the chamber. The end wall and end cap each have an opening to pass a fluid to the chamber or to remove a fluid from the chamber. The housing and end cap each has an abutment surface to receive the other abutment surface. At least one of the abutment surfaces has a plastic seal coating. A means of compression, such as a compression housing and compression sleeve, is included to engage the end cap to deform the plastic seal coating between the abutment surfaces and thereby seal the chamber.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: June 7, 2011
    Assignee: Waters Technologies Corporation
    Inventors: Theodore D. Ciolkosz, Peter Kirby, Mark W. Moeller, Russell Keene, Daniel J. McCormick, Charles Murphy, Joseph A. Luongo, David R. Friswell, Theodore Dourdeville
  • Publication number: 20080290309
    Abstract: A pin valve assembly and a method of controlling the flow of fluids comprising a pin block housing pin valves, a fluid plate with a fluid channel for fluidically communicating with the pin valves, and a fitting block housing fittings for fluidic communication with the fluid plate and for fluidic communication with fluidic components. The fluid flow through the channels of the fluid plate are controlled by the fluidic components and the pin valves.
    Type: Application
    Filed: February 18, 2005
    Publication date: November 27, 2008
    Applicant: Waters Investments Limited
    Inventors: Russell Keene, David R. Friswell, Mark Moeller, Charles Murphy, Theodore D. Ciolkosz
  • Publication number: 20080190498
    Abstract: A flow through isolation valve having a stationary member; a movable member, with a surface of the stationary member interfacing with a surface of the movable member; and at least one pin isolation valve. The pin isolation valve has a flow through internal conduit and is movable so that the internal conduit can fluidically communicate with at least one blank opening in the movable member and with a flow through internal conduit in the movable member. Movement is by rotation, linear or curvilinear translation. At least one pin isolation valve is fluidically coupled typically to a sample loop of a face seal valve, or to a pump supplying high pressure liquid to or to a column discharging liquid from a face seal valve of a high pressure liquid chromatography (HPLC) system or directly to the face seal valve.
    Type: Application
    Filed: March 2, 2005
    Publication date: August 14, 2008
    Applicant: Waters Investments Limited
    Inventors: Russell Keene, David R. Friswell
  • Patent number: 6846680
    Abstract: The present invention provides a liquid handling system capable of automated dispensing and reformatting operations by virtue of a quick-release cannula array mounting system that permits cannula arrays to be changed automatically by the system or manually by a user. Automated changing of the cannula array is carried out by relative movement of the dispensing head and the sample support surface to deliver the attached cannula array to a storage location, releasing the array from the dispensing head, and attaching a new cannula array. Relative movement between the dispensing head and sample support surface in at least two dimensions increases flexibility of the system and makes self-loading of the cannula array practical. The system provides advantages in time and accuracy of cannula array changeover procedures. The automated cannula array changeover capability permits automated wellplate reformatting procedures, which can be performed quickly and accurately.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: January 25, 2005
    Assignee: Caliper Life Sciences, Inc.
    Inventors: David R. Friswell, Raymond Dunlap, George Grubner, Enrique Bernal
  • Publication number: 20030027345
    Abstract: The present invention provides a liquid handling system capable of automated dispensing and reformatting operations by virtue of a quick-release cannula array mounting system that permits cannula arrays to be changed automatically by the system or manually by a user. Automated changing of the cannula array is carried out by relative movement of the dispensing head and the sample support surface to deliver the attached cannula array to a storage location, releasing the array from the dispensing head, and attaching a new cannula array. Relative movement between the dispensing head and sample support surface in at least two dimensions increases flexibility of the system and makes self-loading of the cannula array practical. The system provides advantages in time and accuracy of cannula array changeover procedures. The automated cannula array changeover capability permits automated wellplate reformatting procedures, which can be performed quickly and accurately.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventors: David R. Friswell, Raymond Dunlap, George Grubner, Enrique Bernal
  • Patent number: 6068393
    Abstract: A robotic system for processing a plurality of products, the system including a plurality of units arranged to sequentially receive the products and each having a work station for effecting a specific operation on the products; and a robotic device associated with each unit and operable to sequentially obtain the products from a preceding unit, to transport the products to the work station of its associated unit and to transport the products from the associated work station to a position accessible to a robotic device of a succeeding unit.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: May 30, 2000
    Assignee: Zymark Corporation
    Inventors: Burleigh M. Hutchins, Tye B. Fowler, David R. Friswell, Paul A. Kearsley, Bruce A. Swanson, Eugene T. Tetreault, Jack Elands
  • Patent number: 5955373
    Abstract: A processing system for processing a plurality of products, the system including a plurality of interchangeable units arranged to receive the products and each having a work station for effecting a specific operation, and a canopy covering said work station, the units being interconnected to form an enclosed chamber encompassing the work stations and covered by the interconnected canopies; an environmental control system for controlling environmental conditions within the chamber; and a transport system for transporting the products within the chamber and between the work stations.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: September 21, 1999
    Assignee: Zymark Corporation
    Inventors: Burleigh M. Hutchins, Tye B. Fowler, David R. Friswell, Paul A. Kearsley, Bruce A. Swanson, Eugene T. Tetreault, Jack Elands
  • Patent number: 5928952
    Abstract: A processing system for processing a plurality of products, the system including a plurality of interchangeable units arranged to sequentially receive the products and each having a work station for effecting a specific operation on each of the products, the operation requiring a given time period; and wherein each work station accommodates simultaneously a predetermined number of the products, and the given time period and predetermined number associated with each unit are different than the given time periods and predetermined numbers of other said units. A transport system transports the products through the processing system so as to provide for each product a common occupancy time therein.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 27, 1999
    Assignee: Zymark Corporation
    Inventors: Burleigh M. Hutchins, Tye B. Fowler, David R. Friswell, Paul A. Kearsley, Bruce A. Swanson, Eugene T. Tetreault, Jack Elands
  • Patent number: 5100623
    Abstract: An apparatus for use in isolating solids from liquids by evaporating the liquid, including a vessel for receiving a composition of liquid and solid substances; a gas supply for supplying a drying gas; a gas line for directing the drying gas from the gas supply to the vessel; a liquid supply for supplying a solvent capable of dissolving the solid substance; and a liquid line for directing the solvent from the liquid supply to the vessel. Also included is a sensing means for sensing conditions of evaporation within the vessel and an automatic control system adapted to sequentially initiate a flow of drying gas to the vessel, initiate a flow of solvent to the vessel in response to sensing of a given evaporation condition by the sensing means, interrupt the flow of solvent to the vessel after a certain quantity of solvent has been received thereby, and interrupt the flow of drying gas to the vessel in response to sensing of a particular evaporation condition by the sensing means.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: March 31, 1992
    Assignee: Zymark Corporation
    Inventor: David R. Friswell
  • Patent number: 4707452
    Abstract: An improved system for evaporating liquid to obtain solid residue where by small quantities of a solid are recovered from a first liquid medium and dissolved in another liquid medium. The invention comprises a receptacle for holding the liquid to be treated and structure which localizes entry of an evaporating, or carrier, gas along the wall of the receptacle as it moves downwardly and into contact with the material to be treated. Such localization of inlet gas also provides a relatively quiescent central zone in the receptacle through which exiting gas, carrying evaporated liquid, can be removed without disturbing the flow of inlet gas.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: November 17, 1987
    Assignee: Zymark Corporation
    Inventor: David R. Friswell
  • Patent number: 4600473
    Abstract: Improved means for evaporating liquid to obtain solid residue. The invention is particularly useful where small quantities of a solid is to be recovered from a first liquid medium and dissolved in another liquid medium. The invention comprises a receptable for holding the liquid to be treated and means to sense the temperature of the evaporating process and terminate the evaporating process at any appropriate predetermined temperature condition, thereby avoiding excessive drying of a particular material.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: July 15, 1986
    Assignee: Zymark Corporation
    Inventor: David R. Friswell
  • Patent number: 4117727
    Abstract: The bubble sensor is embodied in a liquid chromatographic system. In the exemplified system a sample conduit or loop which is already filled with liquid eluent communicates with the bore of a needle. The opening of the needle bore is immersed in a liquid sample so that the sample may be backfilled into the sample loop by the withdrawal of the syringe which communicates with the sample loop. After the liquid sample has been drawn into the sample conduit, the needle is lifted from the sample source and moved toward a final position in which the sample conduit will be placed in parallel with a primary conduit, so that the pump which pumps the liquid eluent will drive the sample from the opening toward the chromatrographic column. As the needle is being raised toward this position, it is stopped at an intermediate position in which the orifice is sealed. In this condition, the liquid sample is within the sample conduit which is part of a closed space between the orifice and the syringe.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: October 3, 1978
    Inventors: David R. Friswell, Burleigh M. Hutchins
  • Patent number: 4094195
    Abstract: An automatic liquid sample-injecting apparatus using a conduit such as a hypodermic needle or pipette to suck liquid from a sample source and transfer it to an injector valve apparatus. The apparatus utilizes the optimum embodiment of the apparatus being equipped with (a) novel seal means adapted to exert a radial thrust or wiping action on the conduit and (2) novel conduit working means featuring both a drip-proof means to supply a non-contaminating solvent for washing the exterior of the needle and means to remove such solvent, all without interfering with the use of the needle in a series of automatic injections.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: June 13, 1978
    Assignee: Waters Associates, Inc.
    Inventors: David R. Friswell, Lawrence J. Finn
  • Patent number: 4094196
    Abstract: An automatic liquid sample-injecting apparatus using a conduit such as a hypodermic needle or pipette to suck liquid from a sample source and transfer it to an injector valve apparatus. The apparatus utilizes the optimum embodiment of the apparatus being equipped with (1) novel seal means adapted to exert a radial thrust or wiping action on the conduit and (2) novel conduit working means featuring both a drip-proof means to supply a non-contaminating solvent for washing the exterior of the needle and means to remove such solvent, all without interfering with the use of the needle in a series of automatic injections.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: June 13, 1978
    Assignee: Waters Associates, Inc.
    Inventor: David R. Friswell
  • Patent number: 4094641
    Abstract: Low loss sample bottle assembly from which very small quantities of liquid can be removed safely, automatically and very nearly completely. The assembly comprises a spring mounted bottle having a small bottom compartment shaped to receive a needle and so sized with respect to the needle that substantially all liquid is forced from the compartment to an upper chamber and into the needle. The bottle is best equipped with a disposable, one piece, septum-like cap.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: June 13, 1978
    Assignee: Waters Associates, Inc.
    Inventor: David R. Friswell
  • Patent number: 4070004
    Abstract: An improved diaphragm valve, particularly adapted for applications at high pressures and in applications in which low dead volume is required. The valve has a diaphragm which is formed of a halogenated hydrocarbon polymer of a compression strength sufficient to avoid non-recoverable extrusion of the diaphragm. Use of such a valve totally avoids the work-hardening problem encountered in use of valves using metal diaphragms.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: January 24, 1978
    Assignee: Waters Associates, Inc.
    Inventor: David R. Friswell