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US 2025/0367606 A1Published application
Field flow fractionation channel assembly seals
OwnerAnthony Clemens, Michael James Howo +2inventors
InventorsAnthony Clemens, Michael James Howo, Steven P. Trainoff, David Rahmlow
Life of this patent
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Abstract
A field flow fractionator comprises a top plate, a bottom plate, a channel between the top plate and the bottom plate, an o-ring between the top plate and the bottom plate to form a first seal for the channel, and a membrane along a bottom of the channel. The top plate further comprises a lip extending vertically from the top plate to form a second seal for the channel by directly abutting the membrane.
Claims20
A field flow fractionator comprising:
- a top plate;
- a bottom plate;
- a channel between the top plate and the bottom plate;
- an o-ring between the top plate and the bottom plate to form a first seal for the channel;
- and
- a membrane along a bottom of the channel, wherein the top plate further comprises a lip extending vertically from the top plate to form a second seal for the channel by directly abutting the membrane.
3 more elements
A field flow fractionator comprising:
- a top plate assembly formed of a material comprising a plurality of fluid fittings machined into the material;
- a membrane;
- a bottom plate assembly comprising:
- a cavity machined into a top surface of the bottom plate assembly;
- a frit configured to be placed into the cavity, wherein the top plate assembly, the membrane, and the bottom assembly define a separation channel;
- and
- an o-ring between the top plate assembly and the bottom plate assembly to form a first seal for the separation channel, wherein the top plate assembly further comprises a lip extending vertically from the top plate assembly to form a second seal for the channel by directly abutting the membrane.
4 more elements
A field flow fractionator comprising:
- a top plate comprising a cavity formed by first and second sidewalls extending 90 degrees from a top surface;
- a square or rectangular gasket constructed and arranged for positioning in the cavity, the gasket having a width that is the same as or similar to a width of the top surface and having a height greater than a height of the first and second sidewalls to be placed in the cavity for a line-to-line fit, wherein the width of the gasket and a width of cavity are the same, and wherein as pressurized, the gasket is forced against the first and second sidewalls;
- a membrane directly abutting a bottom surface of the gasket;
- a channel having an end at a side surface of the gasket;
- and
- a bottom plate that directly abuts the top plate to compress the gasket to form a first seal between the gasket and the cavity of the top plate and a second seal between the bottom surface of the gasket and the membrane.
3 more elements
Dependencies are inferred from the claim text.