Multi-chambered supercritical fluid extraction cartridge
First Claim
Patent Images
1. A cartridge adapted for use in a supercritical fluid extraction system that operates at a predetermined pressure, comprising:
- at least one seal means for sealing against the flow of fluids;
at least a first and second chamber divided by the at least one seal means;
the flow of fluids causing a pressure difference between said at least first and second chambers;
said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; and
said strength being insufficient to resist release of said seal at said predetermined pressure.
2 Assignments
0 Petitions
Accused Products
Abstract
A multiple chamber sample holding cartridge is used with a supercritical fluid extractor that causes membranes dividing the cartridge into chambers to rupture upon the pressurization of the sample cartridge, thereby allowing the intermixing of materials contained in the chambers. The neutral oil and loss determination of soybean and other oilseed oils by supercritical fluid extraction is efficient with this two-chambered sample cartridge.
-
Citations
25 Claims
-
1. A cartridge adapted for use in a supercritical fluid extraction system that operates at a predetermined pressure, comprising:
-
at least one seal means for sealing against the flow of fluids; at least a first and second chamber divided by the at least one seal means; the flow of fluids causing a pressure difference between said at least first and second chambers; said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; and said strength being insufficient to resist release of said seal at said predetermined pressure. - View Dependent Claims (2, 3, 4)
-
-
5. A cartridge adapted for use in a supercritical fluid extraction system that operates at a predetermined pressure, comprising:
-
at least one seal means for sealing against the flow of fluids; at least a first and second chamber divided by the at least one seal means; the flow of fluids causing a pressure difference between said at least first and second chambers; said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; said strength being insufficient to resist release of said seal at said predetermined pressure; a first housing section; a second housing section; means for separating said first and second housing sections; and said first and second housing sections being separable sufficiently close to said seal means to permit cleaning of said seal means prior to used without lose of function. - View Dependent Claims (6, 7)
-
-
8. A cartridge adapted for use in a supercritical fluid extraction system that operates at a predetermined pressure, comprising:
-
at least one seal means for sealing against the flow of fluids; at least a first and second chamber divided by the at least one seal means; the flow of fluids causing a pressure difference between said at least first and second chambers; said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; said strength being insufficient to resist release of said seal at said predetermined pressure; and
at least a third chamber separated by at least a second sealing means. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A supercriticial fluid extraction system, comprising:
-
a source of supercritical fluid; a pressure chamber; said pressure chamber having at least one inlet and at least one outlet means; cartridge means adapted to be mounted within said pressure chamber; said at least one inlet and said outlet means being arranged such as to permit supercritical fluid under pressure to flow inside said cartridge means mounted within said pressure means and outside the cartridge whereby said cartridge has equal pressure on both sides; said cartridge means including at least one seal means for sealing against the flow fluids; at least a first and second chamber separated by said at least one seal means. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A supercritical fluid extraction system that operates at a predetermined pressure, comprising:
-
a source of supercritical fluid; a pressure chamber; said pressure chamber having at least one inlet and at least one outlet means; cartridge means adapted to be mounted within said pressure chamber; said at least one inlet and one outlet means being arranged such as to permit supercritical fluid to flow inside said cartridge means mounted within said pressure chamber and outside said cartridge means mounted whereby the cartridge means has equal pressure on both sides; the cartridge means including; a first housing section; a second housing section; means for separating said first and second housing sections; and said first and second housing sections and means for separation said first and second housing sections including corresponding ones of at least a first and second chamber separated by at least one seal means for sealing against the flow of fluids; the flow of fluids causing a pressure difference between said at least first and second chambers; said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; said strength being insufficient to resist release of said seal at said predetermined pressure; and said first and second housing sections being separable sufficiently close to said seal means to permit cleaning of said seal means prior to used without lose of function. - View Dependent Claims (19, 20)
-
-
21. A supercritical fluid extraction system that operates at a predetermined pressure, comprising:
-
a source of supercritical fluid; a pressure chamber; said pressure chamber having at least one inlet and at least one outlet means; cartridge means adapted to be mounted within said pressure chamber; said at least one inlet and one outlet means being arranged such as to permit supercritical fluid under pressure to flow inside said cartridge means mounted within said pressure chamber and outside the cartridge means whereby said cartridge means has equal pressure on both sides; said cartridge means including at least a first and second chamber divided by at least one seal means for sealing against the flow of fluids where said cartridge means has at least a first and second chamber separated by said seal means; the flow of fluids causing a pressure difference between said at least first and second chambers; said at least one seal means having a strength sufficient to resist release of the seal between said at least first and second chambers when the pressure difference between said at least first and second chambers is at a pressure in a range of less than 20 percent of said predetermined pressure between said at least first and second chambers; said strength being insufficient to resist release of said seal at said predetermined pressure; and said cartridge including at least a third chamber separated by at least a second sealing means. - View Dependent Claims (22, 23, 24, 25)
-
Specification