公开(公告)号：US10834807B1

公开(公告)日：2020-11-10

申请号：US15476146

申请日：2017-03-31

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett

IPC: B23K10/00 ,  H05H1/26

Abstract: A plasma torch assembly (e.g., for an ICP-MS or ICP-AES instrument) with a retractable injector is disclosed. In implementations, the torch assembly includes an injector that can be extended or retracted relative to an auxiliary gas tube of the torch assembly. The injector can be slidably coupled to a torch body that supports the auxiliary gas tube, such that the injector can be moved forward and backward through a passage of the torch body, causing it to extend/retract relative to the auxiliary gas tube.

公开(公告)号：US08821789B1

公开(公告)日：2014-09-02

申请号：US14047159

申请日：2013-10-07

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett

IPC: G01N33/00

CPC classification number: G01N33/00 ,  H01J49/105

Abstract: A sample preparation assembly includes a torch configured for use with an inductively coupled plasma spectroscopy instrument. The torch includes at least two approximately cylindrical tubes arranged substantially concentrically. The sample preparation assembly also includes an injector configured for use with the inductively coupled plasma spectroscopy instrument. The injector includes an injection nozzle and a spray chamber. The sample preparation assembly further includes a heat sink element. The heat sink element includes a securing element. The securing element is configured to mate with a mounting element of the torch to mechanically support the heat sink element.

Abstract translation: 样品制备组件包括配置成与电感耦合等离子体光谱仪一起使用的焊炬。 手电筒包括至少两个基本上同心布置的近似圆柱形管。 样品制备组件还包括配置成与电感耦合等离子体光谱仪一起使用的喷射器。 喷射器包括喷射喷嘴和喷雾室。 样品制备组件还包括散热元件。 散热元件包括固定元件。 固定元件构造成与割炬的安装元件配合以机械地支撑散热元件。

公开(公告)号：US20220346215A1

公开(公告)日：2022-10-27

申请号：US17726001

申请日：2022-04-21

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett ,  Kevin Wiederin

IPC: H05H1/22 ,  G01N21/73 ,  H05H1/30 ,  H05H1/34

Abstract: An inductively coupled plasma (ICP) torch is described that includes an injector protector to shield an injector end. A system embodiment includes, but is not limited to, a tubular sample injector configured to receive an aerosolized sample in an interior defined by walls of the tubular sample injector; an injector protector surrounding at least a portion of the tubular sample injector; an inner tube surrounding at least a portion of the injector protector to form a first annular space between the inner tube and the injector protector, the inner tube defining at least one inlet port for introduction of an auxiliary gas into the first annular space; and an outer tube surrounding at least a portion of the inner tube to form a second annular space, the outer tube defining at least one inlet port for introduction of a cooling gas into the second annular space.

公开(公告)号：US10440807B1

公开(公告)日：2019-10-08

申请号：US14867954

申请日：2015-09-28

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett

IPC: H05H1/26 ,  H05H1/32 ,  B23K10/02 ,  H05H1/34 ,  G01N21/73

Abstract: A demountable plasma torch assembly suitable for use in ICP spectrometry comprises a first tube having an inner diameter and a second tube disposed concentrically within the first tube, wherein the second tube has an outer diameter that is less than the inner diameter of the first tube. The first and second tubes are supported by a torch body. The torch body includes a first bore configured to receive an end of the first tube, a second bore configured to receive an end of the second tube, and a manifold disposed between the first bore and the second bore to receive a gas for injection between the first tube and the second tube. The manifold has an outer diameter at least substantially equal to the inner diameter of the first tube and an inner diameter at least substantially equal to the outer diameter of the second tube.

公开(公告)号：US20220344142A1

公开(公告)日：2022-10-27

申请号：US17726018

申请日：2022-04-21

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett ,  Kevin Wiederin

IPC: H01J49/10

Abstract: An inductively coupled plasma (ICP) torch is described that includes a tapered outer end. A system embodiment includes, but is not limited to, a tubular sample injector configured to receive an aerosolized sample in an interior defined by walls of the tubular sample injector; an inner tube surrounding at least a portion of the tubular sample injector to form a first annular space between the inner tube and the walls of the tubular sample injector, the inner tube defining at least one inlet port for introduction of an auxiliary gas into the first annular space; and an outer tube surrounding at least a portion of the inner tube to form a second annular space, the outer tube defining at least one inlet port for introduction of a cooling gas into the second annular space, the outer tube having a flared region at an outlet of the outer tube.

公开(公告)号：US11240880B1

公开(公告)日：2022-02-01

申请号：US16385866

申请日：2019-04-16

Applicant: ELEMENTAL SCIENTIFIC, INC.

Inventor： Tyler Yost ,  Kyle W. Uhlmeyer ,  Daniel R. Wiederin ,  Gary J. Barrett

IPC: H05B1/02 ,  H05B3/42 ,  B05B7/22

Abstract: Systems and methods for heating a spray chamber outlet are described. A system embodiment includes, but is not limited to, a conductive body portion defining an aperture to receive a spray chamber outlet; and an internal cartridge heater coupled to the conductive body portion, the internal cartridge heater configured to regulate a temperature of the conductive body portion to inhibit condensate formation within the spray chamber outlet.

公开(公告)号：US10309389B1

公开(公告)日：2019-06-04

申请号：US15864169

申请日：2018-01-08

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett

IPC: F04B43/12 ,  A61M5/142

Abstract: A peristaltic pump includes a rotating member operably coupled to a drive. The rotating member includes a plurality of rollers arranged in a circular configuration. A guide member defines a channel configured to direct a peristaltic tube around the rotating member so that the peristaltic tube interfaces with the plurality of rollers. The peristaltic tube is pressed against the plurality of rollers by a retaining shoe. The retaining shoe contains surface irregularities configured to restrict movement of the peristaltic tube. A keeper braces the restraining shoe against the peristaltic tube. The rotating rollers compressing the peristaltic tube against the retaining shoe as the rotating member rotates results in a peristaltic action that produces a nearly pulse free linear flow.

公开(公告)号：US20250126700A1

公开(公告)日：2025-04-17

申请号：US18999768

申请日：2024-12-23

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett ,  Kevin Wiederin

IPC: H05H1/22 ,  G01N21/73 ,  H01J49/10 ,  H05H1/24 ,  H05H1/28 ,  H05H1/30 ,  H05H1/34

Abstract: An inductively coupled plasma (ICP) torch is described that includes a tapered outer end. A system embodiment includes, but is not limited to, a tubular sample injector configured to receive an aerosolized sample in an interior defined by walls of the tubular sample injector; an inner tube surrounding at least a portion of the tubular sample injector to form a first annular space between the inner tube and the walls of the tubular sample injector, the inner tube defining at least one inlet port for introduction of an auxiliary gas into the first annular space; and an outer tube surrounding at least a portion of the inner tube to form a second annular space, the outer tube defining at least one inlet port for introduction of a cooling gas into the second annular space, the outer tube having a flared region at an outlet of the outer tube.

公开(公告)号：US12219687B2

公开(公告)日：2025-02-04

申请号：US17726018

申请日：2022-04-21

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett ,  Kevin Wiederin

IPC: H05H1/22 ,  G01N21/73 ,  H01J49/10 ,  H05H1/24 ,  H05H1/28 ,  H05H1/30 ,  H05H1/34

Abstract: An inductively coupled plasma (ICP) torch is described that includes a tapered outer end. A system embodiment includes, but is not limited to, a tubular sample injector configured to receive an aerosolized sample in an interior defined by walls of the tubular sample injector; an inner tube surrounding at least a portion of the tubular sample injector to form a first annular space between the inner tube and the walls of the tubular sample injector, the inner tube defining at least one inlet port for introduction of an auxiliary gas into the first annular space; and an outer tube surrounding at least a portion of the inner tube to form a second annular space, the outer tube defining at least one inlet port for introduction of a cooling gas into the second annular space, the outer tube having a flared region at an outlet of the outer tube.

公开(公告)号：US20220353983A1

公开(公告)日：2022-11-03

申请号：US17725989

申请日：2022-04-21

Applicant: Elemental Scientific, Inc.

Inventor： Daniel R. Wiederin ,  Gary J. Barrett ,  Kevin Wiederin

IPC: H05H1/24 ,  H01J49/10 ,  H05H1/28

Abstract: An inductively coupled plasma (ICP) torch is described that facilitates laminar flow of a cooling gas introduced by a plurality of input ports between an outer tube and an inner tube configured to surround an injector for introduction of an aerosolized sample to a plasma. A system embodiment includes, but is not limited to, an inner tube; and an outer tube surrounding at least a portion of the inner tube to form an annular space, the outer tube defining a plurality of inlet ports for introduction of a cooling gas into the annular space as a laminar flow via each inlet port of the plurality of inlet ports.