Patent US4053771A successfully refreshed from Google Patents.
US4053771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for activation analysis
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
•
Filing: 1975-12-01
•
Granted: 1977-10-11
•
Expires: 1995-12-01
Abstract
Abstract N samples are irradiated simultaneously for a period which is N times longer than the period of subsequent measurement of a sample, by means of a device constituted by a transfer circuit in which stations are provided successively for introduction, irradiation, separation, measurement and discharge of samples. A portion of the circuit serves to transfer a sample-holder for N samples, means for positioning the sample-holder and extracting samples therefrom being provided at the separating station.
Inventors
- 👤 Georges Aude
- 👤 Jean Laverlochere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:30
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/2204; G01N23/221
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
47 words
A method of activation analysis of N samples, wherein the N samples are irradiated simultaneously and wherein said N samples are each measured in turn after having been separated from each other, the irradiation time being N times longer than the time of measurement of one sample.
Claim 2
Independent Claim
47 words
A method of activation analysis of N samples, wherein the N samples are irradiated simultaneously and wherein said N samples are each measured in turn after having been separated from each other, the irradiation time being N times longer than the time of measurement of one sample.
Claim 3
Dependent Claim
36 words
A method of activation analysis according to claim 1, wherein the rate of analysis is modified by changing at least one of the two parameters: time t of irradiation of samples and number N of samples.
Claim 4
Dependent Claim
26 words
A method of activation analysis according to claim 2, wherein the rate of analysis is increased by reducing the time t/N of measurement of a sample.
Claim 5
Dependent Claim
40 words
A method of activation analysis according to claim 1, wherein the performances of the analysis are enhanced by increasing the number N of samples in respect of a given rate of analysis determined by a given time of measurement t/N.
Claim 6
Independent Claim
95 words
A device for activation analysis, wherein said device is constituted by a transfer circuit comprising means for the simultaneous irradiation of N samples carried on a sample-holder, means for locating each of the N samples on the sample-holder, means for extracting each of the N samples from the sample-holder, means for measuring sequentially each of the N samples in a predetermined order, means to position the sample-holder adjacent the irradiation, the locating and the measuring means, and means to move each of the samples extracted from the sample-holder to a position adjacent the measuring means.
Claim 7
Independent Claim
95 words
A device for activation analysis, wherein said device is constituted by a transfer circuit comprising means for the simultaneous irradiation of N samples carried on a sample-holder, means for locating each of the N samples on the sample-holder, means for extracting each of the N samples from the sample-holder, means for measuring sequentially each of the N samples in a predetermined order, means to position the sample-holder adjacent the irradiation, the locating and the measuring means, and means to move each of the samples extracted from the sample-holder to a position adjacent the measuring means.
Claim 8
Dependent Claim
13 words
An analytical device according to claim 5, wherein said transfer circuit is pneumatic.
Claim 9
Dependent Claim
34 words
An analytical device according to claim 5, wherein the sample-holder comprises a certain number of recesses for capsules disposed at intervals on a circumference whose center is located on the axis of said sample-holder.
Claim 10
Dependent Claim
29 words
An analytical device according to claim 5, wherein the irradiation means comprises means for displacing the sample-holder in rotational motion when said sample-holder is located in said irradiation station.
Claim 11
Dependent Claim
26 words
An analytical device according to claim 5, wherein the extracting means comprises a jack provided with movable arms equal in number to recesses on the sample-holders.
Claim 12
Independent Claim
124 words
A device for activation analysis, wherein said device is constituted by a transfer circuit comprising successively an introduction station, an irradiation station, a separating station, an optional stand-by station, a measuring station and a discharge station, that portion of said transfer circuit which is located upstream of said stand-by station being adapted to the transfer of a sample-holder which is capable of receiving N samples and said separating station being provided with means for positioning the sample-holder and with means for extracting said samples from said sample-holder said means for positioning the sample-holder constituting a magnetic element rigidly fixed to the sample-holder and a magnet which produces action on said magnetic element the magnet being located on a rotary plate driven by a motor.
Claim 13
Independent Claim
124 words
A device for activation analysis, wherein said device is constituted by a transfer circuit comprising successively an introduction station, an irradiation station, a separating station, an optional stand-by station, a measuring station and a discharge station, that portion of said transfer circuit which is located upstream of said stand-by station being adapted to the transfer of a sample-holder which is capable of receiving N samples and said separating station being provided with means for positioning the sample-holder and with means for extracting said samples from said sample-holder said means for positioning the sample-holder constituting a magnetic element rigidly fixed to the sample-holder and a magnet which produces action on said magnetic element the magnet being located on a rotary plate driven by a motor.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |