GB1441983A - Dispensing of liquids by motor driven syringes - Google Patents

Dispensing of liquids by motor driven syringes

Info

Publication number
GB1441983A
GB1441983A GB1080873A GB1080873A GB1441983A GB 1441983 A GB1441983 A GB 1441983A GB 1080873 A GB1080873 A GB 1080873A GB 1080873 A GB1080873 A GB 1080873A GB 1441983 A GB1441983 A GB 1441983A
Authority
GB
United Kingdom
Prior art keywords
switch
switches
motor
closed
relay
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.)
Expired
Application number
GB1080873A
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.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Co Ltd
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 British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd
Priority to GB1080873A priority Critical patent/GB1441983A/en
Publication of GB1441983A publication Critical patent/GB1441983A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • B01L3/0224—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type having mechanical means to set stroke length, e.g. movable stops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

1441983 Syringes BRITISH-AMERICAN TOBACCO CO Ltd 4 March 1974 [6 March 1973] 10808/73 Heading F1R [Also in Division H2] A micrometer syringe is operated by a rotary member 8 which is driven by an electric motor 2 through slidable means 4, 7. The discharge by the syringe is controlled by stepping the motor by means of an electronic pre-selector control system. As shown the drive disc 5 has apertures 12 controlling light pulses to a photo-cell 14 connected to a two decade counter 17, 19 the decoders of which are connected to numerical display units 18, 20 and also to ten-way switches 21, 22. Until the switch contact selected is earthed by the decoder, junction 25 is at a positive voltage and transistor 28 will be cut-off hence relay winding 29 deenergized with switch 29a open and 29b closed. Switches 36, 37 are limit switches and switch 38 a three position "Wait" (illustrated), "Dispense" and "Fill" switch. Operation of switch 31 momentarily energizes relay 33 to close contacts 33b to supply a pulse from source 40 to zero the counters. With switch 38 in "Dispense" position, limit switch 36 closed and switches 21, 22 selecting numbers, junction 25 is positive and relay 29 de-energized so that current flows from source 39 via 29b, 33c, 36, 38e to motor 2 until the numbers indicated equal the switch positions whereon 25 becomes zero, 29 is energized 29a is closed (to hold) and 29b opened to stop the motor.
GB1080873A 1973-03-06 1973-03-06 Dispensing of liquids by motor driven syringes Expired GB1441983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1080873A GB1441983A (en) 1973-03-06 1973-03-06 Dispensing of liquids by motor driven syringes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1080873A GB1441983A (en) 1973-03-06 1973-03-06 Dispensing of liquids by motor driven syringes

Publications (1)

Publication Number Publication Date
GB1441983A true GB1441983A (en) 1976-07-07

Family

ID=9974661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1080873A Expired GB1441983A (en) 1973-03-06 1973-03-06 Dispensing of liquids by motor driven syringes

Country Status (1)

Country Link
GB (1) GB1441983A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358651A1 (en) * 1976-07-13 1978-02-10 Sundstrom Karl IMPROVEMENTS FOR LIQUID DOSERS
EP0009013A1 (en) * 1978-09-04 1980-03-19 Lkb Clinicon Aktiebolag A pipetting and dosing device
US4566868A (en) * 1980-09-17 1986-01-28 Geotechnical Digital Systems Limited Pressure source
GB2415423A (en) * 2004-06-22 2005-12-28 Bosch Gmbh Robert Dosing apparatus and method of operating the same
WO2008099180A1 (en) 2007-02-16 2008-08-21 Brunob Ii B. V. Apparatus for and methods of mixing and dispensing liquid or powdery samples
CN106014945A (en) * 2016-05-30 2016-10-12 创世科研有限公司 Precise control method of water outlet amount of micro water pump and micro water pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358651A1 (en) * 1976-07-13 1978-02-10 Sundstrom Karl IMPROVEMENTS FOR LIQUID DOSERS
EP0009013A1 (en) * 1978-09-04 1980-03-19 Lkb Clinicon Aktiebolag A pipetting and dosing device
US4566868A (en) * 1980-09-17 1986-01-28 Geotechnical Digital Systems Limited Pressure source
GB2415423A (en) * 2004-06-22 2005-12-28 Bosch Gmbh Robert Dosing apparatus and method of operating the same
GB2415423B (en) * 2004-06-22 2007-02-28 Bosch Gmbh Robert A method of dosing substances
US7191917B2 (en) 2004-06-22 2007-03-20 Robert Bosch Gmbh Metering device and method for operating such
WO2008099180A1 (en) 2007-02-16 2008-08-21 Brunob Ii B. V. Apparatus for and methods of mixing and dispensing liquid or powdery samples
EP2420314A2 (en) 2007-02-16 2012-02-22 Brunob Ii B.V. Apparatus for and method for mixing small samples of material
CN106014945A (en) * 2016-05-30 2016-10-12 创世科研有限公司 Precise control method of water outlet amount of micro water pump and micro water pump

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee