Patent EP0073501A1 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0073501A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

A cell for measurement

Assignee: Eisai Co Ltd
•
Filing: 1982-08-27
•
Granted: —
•
Expires: 2002-08-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention relates to a cell (1) into which liquid sample (2) to be measured is injected and which is provided with a sample inlet (16) and a sample receiving portion (7). In the sample receiving portion (7), a suction tube (14) for discharging liquid is inserted extending to the bottom (11) of the cell (1) and is connected to a suction pump (20) through an electromagnetic valve (18). An injection tube (13) for cleaning liquid is provided in proximity of the sample inlet (16) in a holder plate (12) and connected to a constant volume pump (21) for injecting the cleaning liquid (22). The discharge of the sample (2) by the suction pump (20), the injection of the cleaning liquid (22) by the constant volume pump (21) and the discharge of cleaning liquid (22) by the suction pump (20) are controlled by a sequential timer circuit (24).

Inventors

  • 👤 Nanba Yuzaburo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 17:53
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/11; G01N21/03; G01N2021/0346

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 73 words
A cell receiving a sample set in an optical path for the optical measurement, comprising a holder plate (12) adapted to be freely set to and removed from the opening (10) of the cell (1), wherein said holder plate (12) has an injection tube (13) for cleaning liquid (22), a suction tube (14) reaching to the bottom (11) of the sample receiving chamber (7) and an injection opening (16) for the sample (2).
Claim 2
Dependent Claim 73 words
A cell receiving a sample set in an optical path for the optical measurement, comprising a holder plate (12) adapted to be freely set to and removed from the opening (10) of the cell (1), wherein said holder plate (12) has an injection tube (13) for cleaning liquid (22), a suction tube (14) reaching to the bottom (11) of the sample receiving chamber (7) and an injection opening (16) for the sample (2).
Claim 3
Dependent Claim 130 words
A cell receiving a sample set in an optical path for the optical measurement comprising a holder plate (12) adapted to be freely set to and removed from the opening (10) of the cell (1), wherein an injection tube (13) for a cleaning liquid (22), a suction tube (14) reaching to the bottom (11) of the sample receiving chamber (7), and an injection opening (16) for the sample (2) are provided, and wherein the injection tube (13) is connected to a constant volume pump (21) for the cleaning liquid (22) and the suction tube (14) is connected to a suction pump (20) through an electromagnetic valve (18) and the constant volume pump (21), the electromagnetic valve (18) and the suction pump (20) being coupled with control timers (25, 26, 27).
Claim 4
Dependent Claim 130 words
A cell receiving a sample set in an optical path for the optical measurement comprising a holder plate (12) adapted to be freely set to and removed from the opening (10) of the cell (1), wherein an injection tube (13) for a cleaning liquid (22), a suction tube (14) reaching to the bottom (11) of the sample receiving chamber (7), and an injection opening (16) for the sample (2) are provided, and wherein the injection tube (13) is connected to a constant volume pump (21) for the cleaning liquid (22) and the suction tube (14) is connected to a suction pump (20) through an electromagnetic valve (18) and the constant volume pump (21), the electromagnetic valve (18) and the suction pump (20) being coupled with control timers (25, 26, 27).
Claim 5
Dependent Claim 43 words
The cell according to claim 2, wherein the control timers (25, 26, 27) comprise a timer (25,27) for sucking off a sample (2), a timer (26) for injecting a cleaning liquid (22) and a timer (25, 27) for discharging the cleaning liquid (22).
Claim 6
Dependent Claim 36 words
The cell according to claim 3 wherein the timer (26) for injecting the cleaning liquid (22) and the timer (25,27) for discharging the cleaning liquid are to be operated alternately in a plural number of times.

References Cited (Backward Citations)

US3225601A Cited
US3419722A Cited
DE1995731U Cited
DE6805832U Cited
GB2068543A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag