公开(公告)号：US11448623B2

公开(公告)日：2022-09-20

申请号：US16914292

申请日：2020-06-27

Applicant: LDETEK INC.

Inventor： Xavier Simard-Lecours ,  Dany Gagne ,  Louis Paradis

IPC: G01N30/32 ,  F16K1/36 ,  F16K1/46 ,  F16K11/22 ,  F16K31/122 ,  F16K11/02 ,  G01N30/02

Abstract: The valve assembly includes a main valve body defining a first inner cylindrical cavity, a support plate positioned above the main valve body, and an upper valve head positioned above the support plate. The upper valve head includes a bottom planar bottom surface and a plurality of discrete conduits, each conduit extending between an outer end and an inner end. The valve assembly further includes a sealing diaphragm interposed between the support plate and the upper valve head. The diaphragm can be engaged by plungers to selectively open or close corresponding gas circuits.

公开(公告)号：US20240009620A1

公开(公告)日：2024-01-11

申请号：US18347216

申请日：2023-07-05

Applicant: LDetek Inc.

Inventor： Dany Gagne ,  Louis Paradis

IPC: B01D53/86 ,  F17C7/00 ,  C01B23/00 ,  G01N31/10

CPC classification number: B01D53/86 ,  F17C7/00 ,  C01B23/0094 ,  G01N31/10 ,  F17C2201/0185 ,  F17C2227/0135 ,  F17C2221/017 ,  F17C2205/0323 ,  F17C2250/0447 ,  F17C2205/0338 ,  F17C2260/056 ,  C01B2210/001 ,  C01B2210/0003 ,  C01B2210/0031

Abstract: An apparatus for collecting helium gas includes: a first receptacle having a first flexible membrane for receiving a gas containing helium, the first receptacle being selectively couplable to an inlet of the apparatus; a second receptacle having a second flexible membrane for receiving the gas containing helium, the second receptacle being selectively couplable to the inlet of the apparatus; a pump having an inlet selectively couplable to an outlet of the first receptacle and selectively couplable to an outlet of the second receptacle; a purifier having an inlet couplable to an outlet of the pump; and an outlet of the apparatus couplable to an outlet of the purifier. A method of collecting and reusing helium gas is also described. Other valuable and/or rare gases may be recovered and reused.

公开(公告)号：US10126278B2

公开(公告)日：2018-11-13

申请号：US15446781

申请日：2017-03-01

Applicant: LDETEK INC.

Inventor： Dany Gagne ,  Louis Paradis ,  Xavier Simard-Lecours

IPC: G01J3/28 ,  G01N30/74 ,  G01N21/67

Abstract: The micro-plasma emission detector unit is for use with a gas chromatograph. It includes an airtight housing having an internal ionization chamber, a pair of spaced-apart ionization electrodes positioned on opposite sides of the housing, and a set of opposite first and second holding members between which the housing is maintained inside the detector unit. Each electrode is maintained against an outer surface of the housing using a corresponding force-generating mechanism. With the proposed design, the risks of damaging the housing due to the thermal stresses are mitigated and the operating temperature of the detector unit can be increased.

公开(公告)号：US09310308B2

公开(公告)日：2016-04-12

申请号：US13931207

申请日：2013-06-28

Applicant: LDETEK INC.

Inventor： Louis Paradis ,  Dany Gagne

IPC: G01N21/66 ,  G01N21/68

CPC classification number: G01N21/68

Abstract: The micro-plasma emission detector unit is for use with a gas chromatograph. It includes an airtight housing having an internal ionization chamber and a makeup gas inlet chamber, a pair of spaced-apart ionization electrodes positioned on opposite sides of the ionization chamber, and a permeation device having a semi-permeable membrane. The semi-permeable membrane is at least partially and removably insertable through the makeup gas inlet chamber.

Abstract translation: 微等离子体发射检测器单元用于气相色谱仪。 它包括具有内部电离室和补充气体入口室的气密壳体，位于离子化室的相对侧上的一对隔开的电离电极和具有半透膜的渗透装置。 半透膜至少部分地且可移除地通过补充气体入口室插入。