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US3615230A
Expired / Lapsed
US
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Device for automatically carrying out chemical analyses
Assignee: PE Manufacturing GmbH
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Filing: 1967-12-11
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Granted: 1971-10-26
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Expires: 1987-12-11
Abstract
Abstract A method and apparatus for automatically carrying out chemical analyses. The apparatus comprises a series of sample holders, a dosing pump, a transporting device for guiding the sample holders past the dosing pump, a plurality of reaction vessels associated with each sample holder, and control means for moving the dosing pump relative to the holders and for providing for withdrawal of an unmeasured quantity of sample from the sample holders and for dispensing this sample quantity in smaller measured quantities into associated reaction vessels.
Inventors
- 👤 Rudolf Barnick
- 👤 Detley Siemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:32
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; B01L3/0227; F; F04; F04B; F04B53/00; F04B53/14; F04B53/16; F04B53/162; F04B9/00; F04B9/02; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
The device as claimed in claim 1 wherein said transport body comprises a rotatable turntable, said sample vessels are arranged in a circle on said turntable, said associated reaction vessels are positioned along a radial line of said turntable and said pump-actuating means is adapted for moving said dosing pump radially and vertically with respect to said turntable.
Claim 2
Dependent Claim
39 words
The device as claimed in claim 1 including a waste vessel, and said pump control means is adapted for causing said pump to withdraw a sample quantity and discharge this quantity into said waste vessel for cleaning said pump.
Claim 3
Dependent Claim
20 words
The device as claimed in claim 3, wherein said waste vessel is provided by a drain extending around said turntable.
Claim 4
Dependent Claim
36 words
The device of claim 1 wherein said dosing pump includes a piston positioned in a cylinder and means including a stepping motor coupled to said piston for operating said piston to cause displacement of said piston.
Claim 5
Dependent Claim
54 words
A dosing pump as claimed in claim 5 wherein said stepping motor is arranged coaxially to said piston, said pump further including a threaded spindle coupled to said motor and rotatably driven thereby, a coupling means engaging said spindle and coupled to said piston, and a guide means for restricting rotation of said coupling.
Claim 6
Dependent Claim
25 words
A dosing pump as claimed in claim 6 wherein said cylinder is formed of glass and said piston is formed of smooth elastic plastic material.
Claim 7
Dependent Claim
33 words
A dosing pump as claimed in claim 7 including a plug closure for said cylinder and a capillary tube positioned in said plug closure for admitting and discharging a liquid from said cylinder.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |