EP0348612A3 - Pipette - Google Patents

Pipette Download PDF

Info

Publication number
EP0348612A3
EP0348612A3 EP19890106634 EP89106634A EP0348612A3 EP 0348612 A3 EP0348612 A3 EP 0348612A3 EP 19890106634 EP19890106634 EP 19890106634 EP 89106634 A EP89106634 A EP 89106634A EP 0348612 A3 EP0348612 A3 EP 0348612A3
Authority
EP
European Patent Office
Prior art keywords
arbor
flange
casing
plunger
pipette
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19890106634
Other languages
German (de)
French (fr)
Other versions
EP0348612A2 (en
Inventor
Wojciech Sarna
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Przedsiebiorstwo Polonijno Zagraniczne Plastomed
Original Assignee
Przedsiebiorstwo Polonijno Zagraniczne Plastomed
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Przedsiebiorstwo Polonijno Zagraniczne Plastomed filed Critical Przedsiebiorstwo Polonijno Zagraniczne Plastomed
Publication of EP0348612A2 publication Critical patent/EP0348612A2/en
Publication of EP0348612A3 publication Critical patent/EP0348612A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type

Abstract

The present invention solves the problem of working out a de­ sign of a plain pipette which seves for drawing in, pipetting and dispensing the fluid of a strictly specified volume and which is characterized by a high repeatability of results.
The said pipette consists of a round casing /1/ being simul­ taneously a handle thereof, whereto, via a round nut /2/, there is fitted a multi-step shank /3/. Inside the body of casing /1/, there is a plunger /4/, being in the form of a multi-step rod,which is being displaced downwards with the aid of a press means /16/ and of a round arbor /15/, contrary to the force being exerted by a lift-up spring /13/ which makes plunger /4/ return to its initial position. Furthermore, inside the body of casing /1/, centrally in the symmetry axis of the pipette, directly under press means /16/, there is a calibration unit comprising a multi-step calibration sleeve /19/, which is blocked from the top by a hold-down element /24/, being screwed into the body of casing /1/, inside whereof there freely slides an arbor /15/ being connected to press means /16/.
The end of arbor /15/ is placed inside an elongated sleeve being a push rod /14/, which from the top rests with its flange upon the face of a stop /20/ being screwed into the internal thread of calibration sleeve /19/.
From the top, upon the flange of push rod /14/, the pres­ sure is being simultaneously exerted by a blow-out mechanism spring /22/, which from the top rests upon a washer /18/ being blocked by a ring /17/. The lower part of push rod /14/ gets in contact with a plunger's flange /10/, whereas bet­ ween plunger's flange /10/ and the end of arbor /15/ there is a narrow slot /23/.
EP19890106634 1988-04-15 1989-04-13 Pipette Withdrawn EP0348612A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL27184588A PL155157B1 (en) 1988-04-15 1988-04-15 Simple pipette
PL271845 1988-04-15

Publications (2)

Publication Number Publication Date
EP0348612A2 EP0348612A2 (en) 1990-01-03
EP0348612A3 true EP0348612A3 (en) 1990-09-12

Family

ID=20041629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890106634 Withdrawn EP0348612A3 (en) 1988-04-15 1989-04-13 Pipette

Country Status (8)

Country Link
EP (1) EP0348612A3 (en)
CS (1) CS227189A3 (en)
DD (1) DD283779A5 (en)
HU (1) HUT53459A (en)
LT (1) LTIP796A (en)
LV (1) LV10400A (en)
PL (1) PL155157B1 (en)
RU (1) RU1836147C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003591A1 (en) * 1990-02-07 1991-08-08 Joerg Spindler MULTI-CHANNEL PIPETTE WITH PISTON ON THE LIFTING PLATE
FI88775C (en) * 1992-02-11 1993-07-12 Biohit Oy Pipette
DE10013511A1 (en) 2000-03-20 2001-10-11 Brand Gmbh & Co Kg Multiple channel pipetting arrangement used for microtitration plates has pipette shafts each having a sealing receiver on the upper end with a plunger seal arranged in it
FI20031626A0 (en) * 2003-11-10 2003-11-10 Thermo Electron Oy Monivaihepipetti
CN112206843A (en) * 2019-07-12 2021-01-12 华大青兰生物科技(无锡)有限公司 Device for transferring liquid
CN112206842A (en) * 2019-07-12 2021-01-12 华大青兰生物科技(无锡)有限公司 Multichannel pipettor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1209592A (en) * 1958-08-14 1960-03-02 Device for accurately dosing and transferring small amounts of liquid
US4009611A (en) * 1976-05-13 1977-03-01 Oxford Laboratories Inc. Hand-held micropipettor with improved pipette tip ejector
US4096751A (en) * 1977-06-15 1978-06-27 Oxford Laboratories Inc. Hand-held micropipettor with fluid transfer volume adjustment mechanism
EP0181957A1 (en) * 1984-11-20 1986-05-28 HTL High-Tech Lab Herstellung und Vertrieb medizinisch technischer Erzeugnisse GmbH Adjustable-volume pipette

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1209592A (en) * 1958-08-14 1960-03-02 Device for accurately dosing and transferring small amounts of liquid
US4009611A (en) * 1976-05-13 1977-03-01 Oxford Laboratories Inc. Hand-held micropipettor with improved pipette tip ejector
US4096751A (en) * 1977-06-15 1978-06-27 Oxford Laboratories Inc. Hand-held micropipettor with fluid transfer volume adjustment mechanism
EP0181957A1 (en) * 1984-11-20 1986-05-28 HTL High-Tech Lab Herstellung und Vertrieb medizinisch technischer Erzeugnisse GmbH Adjustable-volume pipette

Also Published As

Publication number Publication date
LV10400A (en) 1995-02-20
HUT53459A (en) 1990-10-28
DD283779A5 (en) 1990-10-24
PL271845A1 (en) 1990-01-08
PL155157B1 (en) 1991-10-31
RU1836147C (en) 1993-08-23
EP0348612A2 (en) 1990-01-03
LTIP796A (en) 1995-02-27
CS227189A3 (en) 1992-06-17

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