US3929004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for monitoring materials dissolved or suspended in liquid
Assignee: Orica Ltd
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Filing: 1973-11-26
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Granted: 1975-12-30
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Expires: 1993-11-26
Abstract
Abstract A monitor for a liquid stream including a carrier liquid and at least one component dissolved or suspended therein, wherein the monitor comprises a porous conveyor in the form of a non-supple annulus or band capable of axial rotation and which traverses a gasifying chamber which encloses the conveyor in a manner so as to prevent the escape of the gasified component from the chamber without it first being exposed to a monitoring means. The monitor may advantageously be used with liquid chromatographs.
Inventors
- 👤 Dimiter Stefanoff Gunew
- 👤 Ronald John Herniman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/18; G01N33/1826; G01N30/00; G01N30/02; G01N30/80; G01N1/00; G01N1/02; G01N1/22; G01N30/84; G01N2030/8411; G01N2030/8417; Y; Y02; Y02A; Y02A20/00; Y02A20/20
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
195 words
In a monitor for a liquid stream including a carrier liquid and at least one component dissolved or suspended therein comprising, in combination, a means for dispensing said liquid stream, a conveyor capable of receiving at least a part of said liquid stream, a carrier removal chamber or space traversed by said conveyor and maintained at a temperature selected to remove said carrier liquid and leave said component or components on said conveyor as a residue, means for heating said conveyor in a gasifying chamber to gasify said residue and means for monitoring said gasified residue to generate an ouTput signal indicative of the presence of said component or components in said stream the improvements wherein firstly said conveyor comprises a non-supple annulus of which at least a part is porous and which is of uniform radius and mounted so as to be capable of axial rotation; and secondly said gasifying chamber surrounds a portion of said conveyor and includes bearing surfaces in engagement with the edge portions of said annulus in a manner such that said gasified residue is prevented from escaping from said gasifying chamber without first being exposed to said monitoring means.
Claim 2
Dependent Claim
195 words
In a monitor for a liquid stream including a carrier liquid and at least one component dissolved or suspended therein comprising, in combination, a means for dispensing said liquid stream, a conveyor capable of receiving at least a part of said liquid stream, a carrier removal chamber or space traversed by said conveyor and maintained at a temperature selected to remove said carrier liquid and leave said component or components on said conveyor as a residue, means for heating said conveyor in a gasifying chamber to gasify said residue and means for monitoring said gasified residue to generate an ouTput signal indicative of the presence of said component or components in said stream the improvements wherein firstly said conveyor comprises a non-supple annulus of which at least a part is porous and which is of uniform radius and mounted so as to be capable of axial rotation; and secondly said gasifying chamber surrounds a portion of said conveyor and includes bearing surfaces in engagement with the edge portions of said annulus in a manner such that said gasified residue is prevented from escaping from said gasifying chamber without first being exposed to said monitoring means.
Claim 3
Dependent Claim
13 words
A monitor according to claim 1 wherein said conveyor comprises a flat annulus.
Claim 4
Dependent Claim
17 words
a monitor according to claim 1 wherein said conveyor is in the form of an endless loop.
Claim 5
Dependent Claim
14 words
A monitor according to claim 1 wherein said conveyor is rotated by mechanical means.
Claim 6
Dependent Claim
23 words
A monitor according to claim 1 wherein said conveyor is fabricated from material selected from the group consisting of metals and alloys thereof.
Claim 7
Dependent Claim
15 words
A monitor according to claim 5 wherein said metal is in a sintered powder form.
Claim 8
Dependent Claim
16 words
A monitor according to claim 5 wherein said metal is in the form of woven mesh.
Claim 9
Dependent Claim
21 words
A monitor according to claim 7 wherein the aperture of said mesh is in the range from 0.05 to 0.5 millimetre.
Claim 10
Dependent Claim
23 words
A monitor according to claim 1 wherein said conveyor is fabricated from material selected from the group consisting of porous ceramic and glass.
Claim 11
Dependent Claim
22 words
A monitor according to claim 9 wherein the pore size of said material is in the range from 1 to 100 microns.
Claim 12
Dependent Claim
21 words
A monitor according to claim 1 wherein said conveyor comprises a porous or porolated layer of metal supported on a baseplate.
Claim 13
Dependent Claim
16 words
A monitor according to claim 1 wherein said conveyor comprises ceramic material supported on a baseplate.
Claim 14
Dependent Claim
57 words
A monitor according to claim 1 where said conveyor is an annular conveyor wherein the overall diameter thereof is in the range from 10 to 35 centimetres, the width of the conveying surface is in the range from 0.5 to 3 centimetres and the thickness of the conveyor is in the range from 0.5 to 5 millimetres.
Claim 15
Dependent Claim
27 words
A liquid chromatographic apparatus comprising a monitor according to claim 1 and including a packed column and means for pumping the liquid stream through the packed column.
Claim 16
Dependent Claim
18 words
A liquid chromatographic apparatus according to claim 14 wherein said apparatus is a high pressure liquid chromatographic apparatus.
Claim 17
Dependent Claim
38 words
An apparatus according to claim 15 wherein said apparatus is capable of pumping said liquid stream at a pressure of up to 350 kg/sq.cm at a flow rate in the range from 0.2 to 10 ml per minute.
Claim 18
Dependent Claim
66 words
A monitor as in claim 1 wherein said annulus is porous and wherein said gasifying chamber includes a gas inlet port adjacent one side of the annulus and a gas outlet port adjacent the opposite side of the annulus whereby a gas stream may be passed through the annulus, said monitor further including a gas chromatography detector for receiving the gas stream from the gasifying chamber.
Claim 19
Independent Claim
168 words
A method of monitoring a liquid stream including a carrier liquid and at least one component dissolved or suspended therein which method comprises dispensing at least a part of said stream on to a traversing conveyor which comprises a non-supple annulus of which at least a part is porous and which is of uniform radius and which is mounted so as to be capable of axial rotation and capable of retaining at least a part of said dispensed liquid stream, traversing said conveyor through a heated zone to remove said liquid carrier and leave said component or components as a residue on said conveyor, heating the residue-carrying conveyor to gasify said residue in a gasifying chamber which encloses said conveyor in a manner such that said gasified residue is prevented from escaping from said gasifying chamber without first being exposed to a monitoring means comprising a gas chromatography detector capable of generating a signal denoting the presence of said component or components when exposed to said gasified residue.
Claim 20
Independent Claim
168 words
A method of monitoring a liquid stream including a carrier liquid and at least one component dissolved or suspended therein which method comprises dispensing at least a part of said stream on to a traversing conveyor which comprises a non-supple annulus of which at least a part is porous and which is of uniform radius and which is mounted so as to be capable of axial rotation and capable of retaining at least a part of said dispensed liquid stream, traversing said conveyor through a heated zone to remove said liquid carrier and leave said component or components as a residue on said conveyor, heating the residue-carrying conveyor to gasify said residue in a gasifying chamber which encloses said conveyor in a manner such that said gasified residue is prevented from escaping from said gasifying chamber without first being exposed to a monitoring means comprising a gas chromatography detector capable of generating a signal denoting the presence of said component or components when exposed to said gasified residue.
Claim 21
Dependent Claim
182 words
A monitor for a liquid stream which includes a carrier liquid and at least one component dissolved or suspended therein, said monitor comprising: a conveyor for receiving a dispensed portion of the liquid stream, said conveyor including a non-supple endless annular member of which at least a portion is porous and which is of uniform radious and mounted so as to be capable of axial rotation, said annular member having oppositely disposed edge portions; a carrier removal chamber of space traversed by said conveyor and maintained at a temperature selected to remove the carrier liquid and leave the dissolved or suspended component on the annular member as a residue; means forming a gasifying chamber in which a portion of the annular member is heated to gasify the residue, said gasifying chamber surrounding a portion of said annular member and including bearing surfaces in engagement with the edge portions of the annular member; and a monitoring means for monitoring the gasified residue formed in the gasifying chamber to generate an output signal indicative of the presence of the component in the liquid stream.
Claim 22
Dependent Claim
182 words
A monitor for a liquid stream which includes a carrier liquid and at least one component dissolved or suspended therein, said monitor comprising: a conveyor for receiving a dispensed portion of the liquid stream, said conveyor including a non-supple endless annular member of which at least a portion is porous and which is of uniform radious and mounted so as to be capable of axial rotation, said annular member having oppositely disposed edge portions; a carrier removal chamber of space traversed by said conveyor and maintained at a temperature selected to remove the carrier liquid and leave the dissolved or suspended component on the annular member as a residue; means forming a gasifying chamber in which a portion of the annular member is heated to gasify the residue, said gasifying chamber surrounding a portion of said annular member and including bearing surfaces in engagement with the edge portions of the annular member; and a monitoring means for monitoring the gasified residue formed in the gasifying chamber to generate an output signal indicative of the presence of the component in the liquid stream.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |