US4702114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for withdrawing and conditioning samples of materials in solid, liquid or gaseous form, for the purpose of analysis thereof
Assignee: Omya SAS
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Filing: 1985-04-25
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Granted: 1987-10-27
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Expires: 2005-04-25
Abstract
Abstract A device for withdrawal of a fixed volume of powdered, liquid or gaseous material from a withdrawal zone and for conditioning the withdrawn materials for the purpose of analysis which comprises a retractable cylindrical probe in which there is provided a cavity of known capacity, a retractable sleeve coaxially disposed over the probe for permitting or preventing access to the cavity, a substantially closed chamber in which the probe and sleeve are disposed for reciprocal movement into and out of the withdrawal zone, whereby the probe and sleeve may be extended from the chamber into the withdrawal zone, the sleeve may be retracted to fill the cavity, the sleeve may be extended to seal the cavity, the probe and sleeve may be retracted from the withdrawal zone back into the closed chamber, and finally, the sleeve may again be retracted to permit conditioning of the withdrawn material.
Inventors
- 👤 Claude Cabannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:51
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A device for withdrawal of a fixed volume of powdered, liquid or gaseous material from a withdrawal zone and for conditioning the withdrawn materials for purposes of analysis comprising: (a) a retractable cylindrical probe in which there is provided a cavity of known capacity, (b) a retractable sleeve coaxially disposed over the probe for permitting or preventing access to the cavity, (c) a substantially closed chamber in which the probe and sleeve are disposed for reciprocal movement into and out of the withdrawal zone, said chamber including means for conditioning the material withdrawn by the probe, whereby (1) the probe and sleeve may be extended from the chamber into the withdrawal zone, (2) the sleeve may be retracted to fill the cavity, (3) the sleeve may be extended to seal the cavity, (4) the probe and sleeve may be retracted from the withdrawal zone back into the closed chamber and finally (5) the sleeve may be retracted within the chamber to permit conditioning of the withdrawn material.
Claim 2
Independent Claim
167 words
A device for withdrawal of a fixed volume of powdered, liquid or gaseous material from a withdrawal zone and for conditioning the withdrawn materials for purposes of analysis comprising: (a) a retractable cylindrical probe in which there is provided a cavity of known capacity, (b) a retractable sleeve coaxially disposed over the probe for permitting or preventing access to the cavity, (c) a substantially closed chamber in which the probe and sleeve are disposed for reciprocal movement into and out of the withdrawal zone, said chamber including means for conditioning the material withdrawn by the probe, whereby (1) the probe and sleeve may be extended from the chamber into the withdrawal zone, (2) the sleeve may be retracted to fill the cavity, (3) the sleeve may be extended to seal the cavity, (4) the probe and sleeve may be retracted from the withdrawal zone back into the closed chamber and finally (5) the sleeve may be retracted within the chamber to permit conditioning of the withdrawn material.
Claim 3
Dependent Claim
23 words
A device according to claim 1 wherein the chamber includes front and rear seals to prevent leakage into and out of the chamber.
Claim 4
Dependent Claim
14 words
A device according to claim 1 wherein the chamber is equipped with heating means.
Claim 5
Dependent Claim
12 words
A device according to claim 1 wherein the chambr includes outgassing means.
Claim 6
Dependent Claim
32 words
A device according to claim 1 wherein the probe is divided into a front portion, a middle portion and a rear portion and the middle portion contains the cavity of known capacity.
Claim 7
Dependent Claim
21 words
A device according to claim 5 wherein the rear portion bears a gasket at a front end thereof to prevent leakage.
Claim 8
Dependent Claim
38 words
A device according to claim 5 wherein the sleeve has a front face which abuts against the front portion of the probe at a rear face thereof when the cavity is closed to prevent leakage of the cavity.
Claim 9
Dependent Claim
31 words
A device according to claim 7 wherein the front face of the sleeve and the rear face of the front portion are plane surfaces perpendicular to the axis of the probe.
Claim 10
Dependent Claim
40 words
A device according to claim 7 wherein the front face of the sleeve and the rear face of the front portion are curved surfaces which form knife-edges at their contact points to prevent entrapment of solid particles between said faces.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |