Patent US4090848A successfully refreshed from Google Patents.
US4090848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic analyzing apparatus
Assignee: Jeol Ltd
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Filing: 1976-03-15
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Granted: 1978-05-23
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Expires: 1996-03-15
Abstract
Abstract An automatic analyzing apparatus comprising a rotatable reaction device, a plurality of reaction tubes, said reaction device stepwise rotated by a driving means whereby a reaction tube is advanced through a plurality of functional positions, that is, at the initial position of the rotatable reaction device a liquid sample is supplied to a reaction tube together with a first reagent, at the second position the sample and first reagent are stirred, at the third position a second reagent is supplied to said reaction tube, at the fourth position the sample, and first and second reagents are stirred, at the fifth position, the stirred mixture is optically measured, at the sixth position the optically measured mixture is drained off, and at the seventh position the empty reaction tube is washed and rinsed before being returned to the original position where the next liquid sample is supplied.
Inventors
- 👤 Toyohiko Naono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:52
CPC Classifications
G; G01; G01N; G01N35/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
An automatic analyzing apparatus comprising a rotatable reaction device in which a plurality of reaction tubes are circumferentially spaced, said reaction tubes having upper and lower ports, fixed upper and lower changeover valve blocks having passages that may be brought into registry with the upper and lower ports of said reaction tubes, means for irradiating reaction tubes and the contents thereof at at least one rotary position of the reaction device and means for detecting the amount of light passed through said reaction tube, whereby said reaction tubes may be connected sequentially to receive metered sample and reagents, to receive mixing gases, to exhaust the contents of said tubes and to receive abluents for cleaning said tubes as the rotatable reaction device is stepwise rotated.
Claim 2
Dependent Claim
125 words
An automatic analyzing apparatus comprising a rotatable reaction device in which a plurality of reaction tubes are circumferentially spaced, said reaction tubes having upper and lower ports, fixed upper and lower changeover valve blocks having passages that may be brought into registry with the upper and lower ports of said reaction tubes, means for irradiating reaction tubes and the contents thereof at at least one rotary position of the reaction device and means for detecting the amount of light passed through said reaction tube, whereby said reaction tubes may be connected sequentially to receive metered sample and reagents, to receive mixing gases, to exhaust the contents of said tubes and to receive abluents for cleaning said tubes as the rotatable reaction device is stepwise rotated.
Claim 3
Dependent Claim
25 words
An automatic analyzing apparatus as described in claim 1 in which the rotatable reaction device is arranged in an atmosphere maintained at a fixed temperature.
Claim 4
Dependent Claim
44 words
An automatic analyzing apparatus as described in claim 1 further comprising stirring means including a vacuum pump for evacuating the upper port of a reaction tube and a resistance pipe for allowing an inflow of suitable gas to the lower port to stimulate stirring.
Claim 5
Dependent Claim
20 words
An automatic analyzing apparatus as described in claim 1 further comprising means for preheating a reagent to a specific temperature.
Claim 6
Dependent Claim
25 words
An automatic analyzing apparatus as described in claim 1 further comprising means for preheating the abluent for washing the reaction tubes to a specific temperature.
Claim 7
Dependent Claim
24 words
An automatic analyzing apparatus as described in claim 1 further comprising means for mixing air with an abluent used for washing the reaction tubes.
Claim 8
Dependent Claim
20 words
An automatic analyzing apparatus as described in claim 1 further comprising means for performing the washing operation at least twice.
Claim 9
Dependent Claim
32 words
An automatic analyzing apparatus as described in claim 1 further comprising means for pressurizing by compressed air the upper part of the reaction tube when light detection measurement is being carried out.
Claim 10
Dependent Claim
123 words
An automatic analyzing apparatus comprising a rotatable reaction device in which a plurality of reaction tubes are circumferentially spaced, said reaction tubes having upper and lower ports, upper and lower changeover valves comprising a fixed portion and a rotating portion arranged to rotate with said reaction device, said rotating portions of the upper and lower changeover valves having passages that respectively communicate with the upper and lower ports of said reaction tubes, whereby said upper and lower valves sequentially introduce metered sample and reagents to said tubes, introduce mixing gases to said tubes, exhaust the contents of said tubes and introduce abluents for cleaning said tubes as the rotatable reaction device and rotatable portions of the upper and lower valves are stepwise rotated.
Claim 11
Dependent Claim
123 words
An automatic analyzing apparatus comprising a rotatable reaction device in which a plurality of reaction tubes are circumferentially spaced, said reaction tubes having upper and lower ports, upper and lower changeover valves comprising a fixed portion and a rotating portion arranged to rotate with said reaction device, said rotating portions of the upper and lower changeover valves having passages that respectively communicate with the upper and lower ports of said reaction tubes, whereby said upper and lower valves sequentially introduce metered sample and reagents to said tubes, introduce mixing gases to said tubes, exhaust the contents of said tubes and introduce abluents for cleaning said tubes as the rotatable reaction device and rotatable portions of the upper and lower valves are stepwise rotated.
References Cited (Backward Citations)
US3762879A
Cited
US3764268A
Cited
US3799744A
Cited
US3883305A
Cited
US3874850A
Cited
US3881872A
Cited
US3841834A
Cited
US3912452A
Cited
US3932131A
Cited
US3953136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |