EP0257353B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pipetting device
Assignee: Kontron Instruments Holding NV
•
Filing: 1987-08-01
•
Granted: 1990-11-14
•
Expires: 2007-08-01
Abstract
No abstract record available.
Inventors
- 👤 David John Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:56
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1009; G01N35/1016; G01N35/1081; G01N35/1083; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/2575
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A method of pipetting small quantities of liquid by means of a pipetting device consisting of a probe for immersion in reservoirs, test tubes and similar containers, a metering pump connected to the probe, and a shut-off valve disposed between the probe and the pump, characterised in that air, followed by a specific quantity of liquid, is sucked in in the pump intake phase with the valve open, the valve is closed during at least part of the pump ejection phase, and the valve is opened at the end of the ejection phase.
Claim 2
Independent Claim
93 words
A method of pipetting small quantities of liquid by means of a pipetting device consisting of a probe for immersion in reservoirs, test tubes and similar containers, a metering pump connected to the probe, and a shut-off valve disposed between the probe and the pump, characterised in that air, followed by a specific quantity of liquid, is sucked in in the pump intake phase with the valve open, the valve is closed during at least part of the pump ejection phase, and the valve is opened at the end of the ejection phase.
Claim 3
Dependent Claim
96 words
A pipetting device comprising a probe (1) for immersion in liquid containers (2, 3), a metering pump (9) connected to the probe, and a shut-off valve (5) disposed between the probe and the pump and having a valve drive (6), characterised by a control facility (13) which is connected to the valve drive (6) and which, during the ejection phase of the pump (9), delivers a signal to the valve drive (6) to close the shut-off valve (5) and causes the valve (5) to open towards the end of the ejection phase of the pump (9).
Claim 4
Dependent Claim
96 words
A pipetting device comprising a probe (1) for immersion in liquid containers (2, 3), a metering pump (9) connected to the probe, and a shut-off valve (5) disposed between the probe and the pump and having a valve drive (6), characterised by a control facility (13) which is connected to the valve drive (6) and which, during the ejection phase of the pump (9), delivers a signal to the valve drive (6) to close the shut-off valve (5) and causes the valve (5) to open towards the end of the ejection phase of the pump (9).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.