US3855129B1 - - Google Patents

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Publication number
US3855129B1
US3855129B1 US23212872A US3855129B1 US 3855129 B1 US3855129 B1 US 3855129B1 US 23212872 A US23212872 A US 23212872A US 3855129 B1 US3855129 B1 US 3855129B1
Authority
US
United States
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 - Lifetime
Application number
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.)
Millipore Investment Holdings Ltd
Waters Technologies Corp
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 filed Critical
Priority to US05232128 priority Critical patent/US3855129B1/en
Priority claimed from DE19732366193 external-priority patent/DE2366193C2/de
Priority claimed from US05/417,146 external-priority patent/US3981620A/en
Publication of US3855129A publication Critical patent/US3855129A/en
Priority claimed from US05/546,727 external-priority patent/US3958898A/en
Publication of US3855129B1 publication Critical patent/US3855129B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
    • H02P8/12Control or stabilisation of current
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • F04B11/0058Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, 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
    • F04B49/20Control, 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 by changing the driving speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14Pistons, piston-rods or piston-rod connections
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/36Control of physical parameters of the fluid carrier in high pressure liquid systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/324Control of physical parameters of the fluid carrier of pressure or speed speed, flow rate
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/326Control of physical parameters of the fluid carrier of pressure or speed pumps
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/328Control of physical parameters of the fluid carrier of pressure or speed valves, e.g. check valves of pumps
US05232128 1972-03-06 1972-03-06 Expired - Lifetime US3855129B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05232128 US3855129B1 (en) 1972-03-06 1972-03-06

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US05232128 US3855129B1 (en) 1972-03-06 1972-03-06
FR7307779A FR2175029B1 (en) 1972-03-06 1973-03-05
CA165,223A CA991950A (en) 1972-03-06 1973-03-05 Pumping apparatus
GB1060773A GB1429854A (en) 1972-03-06 1973-03-05 Control of pumping apparatus
JP2594273A JPS6132620B2 (en) 1972-03-06 1973-03-05
DE19732311016 DE2311016C3 (en) 1972-03-06 1973-03-06
DE19732366193 DE2366193C2 (en) 1972-03-06 1973-03-06
US05/417,146 US3981620A (en) 1972-03-06 1973-11-19 Pumping apparatus
US05/546,727 US3958898A (en) 1972-03-06 1975-02-03 Pump control systems

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US05/417,146 Division US3981620A (en) 1972-03-06 1973-11-19 Pumping apparatus
US05417147 Division 1973-11-19

Publications (2)

Publication Number Publication Date
US3855129A US3855129A (en) 1974-12-17
US3855129B1 true US3855129B1 (en) 1985-10-08

Family

ID=22871976

Family Applications (1)

Application Number Title Priority Date Filing Date
US05232128 Expired - Lifetime US3855129B1 (en) 1972-03-06 1972-03-06

Country Status (6)

Country Link
US (1) US3855129B1 (en)
JP (1) JPS6132620B2 (en)
CA (1) CA991950A (en)
DE (1) DE2311016C3 (en)
FR (1) FR2175029B1 (en)
GB (1) GB1429854A (en)

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984315A (en) * 1974-04-26 1976-10-05 Chemie Und Filter Gmbh Verfahrenstechnik Kg Electromagnetic metering pump
US3985019A (en) * 1975-11-10 1976-10-12 Boehme Detlef R Liquid chromatography system with solvent proportioning
US3985021A (en) * 1975-11-10 1976-10-12 Varian Associates High performance liquid chromatography system
US4043906A (en) * 1976-03-18 1977-08-23 Varian Associates, Inc. Method and apparatus for reducing the transient effects of liquid compressibility in a liquid chromatography system
US4045343A (en) * 1975-11-10 1977-08-30 Varian Associates, Inc. High pressure liquid chromatography system
US4131393A (en) * 1977-01-21 1978-12-26 Altex Scientific, Inc. Fluid pump mechanism
US4137011A (en) * 1977-06-14 1979-01-30 Spectra-Physics, Inc. Flow control system for liquid chromatographs
US4180375A (en) * 1977-01-21 1979-12-25 Altex Scientific, Inc. Liquid chromatography pump
US4225290A (en) * 1979-02-22 1980-09-30 Instrumentation Specialties Company Pumping system
US4245963A (en) * 1979-02-09 1981-01-20 Waters Associates, Inc. Pump
US4281687A (en) * 1979-02-09 1981-08-04 Waters Associates, Inc. Fluid storage device
US4294799A (en) * 1980-04-24 1981-10-13 Beckman Instruments, Inc. Temperature regulating apparatus
EP0073906A2 (en) * 1981-09-09 1983-03-16 ISCO, Inc. Apparatus and method for temperature correction of liquid chromatography
EP0106009A1 (en) * 1982-06-29 1984-04-25 Shimadzu Corporation Liquid chromatograph
USRE31586E (en) * 1977-01-21 1984-05-15 Altex Scientific, Inc. Liquid chromatography pump
USRE31608E (en) * 1977-01-21 1984-06-19 Altex Scientific, Inc. Fluid pump mechanism
US4556538A (en) * 1981-03-27 1985-12-03 Toyo Soda Manufacturing Co., Inc. Chromatographic apparatus
US4624625A (en) * 1981-10-08 1986-11-25 Hewlett-Packard Company High pressure metering pump
EP0217318A2 (en) 1981-09-09 1987-04-08 ISCO, Inc. Apparatus and method for liquid chromatography
EP0236982A2 (en) * 1986-03-10 1987-09-16 ISCO, Inc. Pump
WO1988004235A1 (en) * 1986-12-10 1988-06-16 Imaje S.A. Cell with multiple functions comprising a variable volume chamber and fluid supply circuit for an ink jet printing head fitted therewith
FR2608225A1 (en) * 1986-12-10 1988-06-17 Imaje Sa Multi-function cell including a variable-volume chamber, and fluid-feed circuit for an ink-jet printing head which is equipped therewith
US4917575A (en) * 1986-05-02 1990-04-17 The Dow Chemical Company Liquid chromatographic pump
EP0408177A1 (en) * 1989-06-08 1991-01-16 Beckman Instruments, Inc. Check valve cartridges with controlled pressure sealing
EP0433649A1 (en) * 1989-11-17 1991-06-26 ASKOLL S.p.A. Fluid metering pump
US5587082A (en) * 1995-06-07 1996-12-24 Teraoka; Iwao High osmotic pressure chromatography
US5861317A (en) * 1996-04-23 1999-01-19 Shimadzu Corporation Automatic sample injector and method of operating same
WO2002099852A2 (en) * 2001-05-30 2002-12-12 Senx Technology Novel piezoelectric transducer assemblies and methods for their use
US20040136833A1 (en) * 2003-01-10 2004-07-15 Allington Robert W. High pressure reciprocating pump and control of the same
US20040202575A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20040204866A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Method and apparatus to enhance the signal to noise ratio in chromatography
US20040204864A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20040205422A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20050053471A1 (en) * 2003-08-14 2005-03-10 Lg Electronics Inc. Apparatus for controlling operation of reciprocating compressor
US20100012192A1 (en) * 2006-04-12 2010-01-21 Waters Investments Limited Active valve and methods of operation thereof
US20100158704A1 (en) * 2006-07-25 2010-06-24 Waters Technologies Corporation Compliant-seal check valve
GB2483348A (en) * 2010-08-30 2012-03-07 Bosch Gmbh Robert A fluid assembly and a method for controlling a pressure supply unit of the fluid assembly
US20150075230A1 (en) * 2012-03-22 2015-03-19 Wuxi Little Swan Co., Ltd. Washing Machine And Detergent Delivery Pump Assembly Thereof
US20150345484A1 (en) * 2012-09-11 2015-12-03 Warner DÖBELIN Syringe pump system for pulse-free metering and precise mixing in hplc uhplc, micro-hplc and nano-hplc
US20160088978A1 (en) * 2011-10-19 2016-03-31 Bobrick Washroom Equipment, Inc. Automated fluid dispensing system
CN105546046A (en) * 2016-01-28 2016-05-04 北京星达科技发展有限公司 Non-circular gear set and transmission structure for pump
US9649436B2 (en) 2011-09-21 2017-05-16 Bayer Healthcare Llc Assembly method for a fluid pump device for a continuous multi-fluid delivery system
CN107327382A (en) * 2016-04-29 2017-11-07 殷图源 A kind of Novel plunger pump
CN108361168A (en) * 2018-02-05 2018-08-03 南京航空航天大学 It is staggered the time based on dual piston the continuous and stable type metering pump of compensation policy
US10507319B2 (en) 2015-01-09 2019-12-17 Bayer Healthcare Llc Multiple fluid delivery system with multi-use disposable set and features thereof

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2366193C2 (en) * 1972-03-06 1984-10-11 Waters Associates, Inc., Framingham, Mass., Us
DE2922689A1 (en) * 1978-06-07 1979-12-13 Magnussen Jun pumping device
GB1595254A (en) * 1978-01-25 1981-08-12 Berelson R Pumping unit for dishwashing machines
FR2461126B1 (en) * 1978-12-15 1982-10-29 Gilson Medical Electronic Fran
DE3035770C2 (en) * 1980-09-23 1984-08-16 Bruker Analytische Messtechnik Gmbh, 7512 Rheinstetten, De
GB2144282B (en) * 1981-09-08 1985-09-18 Epson Corp Speed control device for a stepping motor
GB2113315B (en) * 1982-01-11 1986-05-21 Hewlett Packard Co An improved high pressure meter pump
JPS6229215Y2 (en) * 1982-05-31 1987-07-27
JPH0631618B2 (en) * 1985-01-23 1994-04-27 株式会社日立製作所 Torque controlled hermetic compressor
JPH06349B2 (en) * 1989-02-10 1994-01-05 工業技術院長 Mold fiber-reinforced thermoplastic synthetic resin
DE102018110918A1 (en) * 2018-05-07 2019-11-07 Lutz Holding GmbH Method for operating a double diaphragm pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446057A (en) * 1966-10-14 1969-05-27 Varian Associates Method and apparatus for chromatography

Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984315A (en) * 1974-04-26 1976-10-05 Chemie Und Filter Gmbh Verfahrenstechnik Kg Electromagnetic metering pump
US3985019A (en) * 1975-11-10 1976-10-12 Boehme Detlef R Liquid chromatography system with solvent proportioning
US4045343A (en) * 1975-11-10 1977-08-30 Varian Associates, Inc. High pressure liquid chromatography system
FR2370977A1 (en) * 1975-11-10 1978-06-09 Varian Associates
US3985021A (en) * 1975-11-10 1976-10-12 Varian Associates High performance liquid chromatography system
US4043906A (en) * 1976-03-18 1977-08-23 Varian Associates, Inc. Method and apparatus for reducing the transient effects of liquid compressibility in a liquid chromatography system
USRE31586E (en) * 1977-01-21 1984-05-15 Altex Scientific, Inc. Liquid chromatography pump
US4131393A (en) * 1977-01-21 1978-12-26 Altex Scientific, Inc. Fluid pump mechanism
USRE31608E (en) * 1977-01-21 1984-06-19 Altex Scientific, Inc. Fluid pump mechanism
US4180375A (en) * 1977-01-21 1979-12-25 Altex Scientific, Inc. Liquid chromatography pump
US4137011A (en) * 1977-06-14 1979-01-30 Spectra-Physics, Inc. Flow control system for liquid chromatographs
US4245963A (en) * 1979-02-09 1981-01-20 Waters Associates, Inc. Pump
US4281687A (en) * 1979-02-09 1981-08-04 Waters Associates, Inc. Fluid storage device
US4225290A (en) * 1979-02-22 1980-09-30 Instrumentation Specialties Company Pumping system
US4294799A (en) * 1980-04-24 1981-10-13 Beckman Instruments, Inc. Temperature regulating apparatus
US4556538A (en) * 1981-03-27 1985-12-03 Toyo Soda Manufacturing Co., Inc. Chromatographic apparatus
EP0073906A2 (en) * 1981-09-09 1983-03-16 ISCO, Inc. Apparatus and method for temperature correction of liquid chromatography
EP0073906A3 (en) * 1981-09-09 1984-04-18 Isco, Inc. Apparatus and method for temperature correction of liquid chromatography
EP0217318A2 (en) 1981-09-09 1987-04-08 ISCO, Inc. Apparatus and method for liquid chromatography
US4624625A (en) * 1981-10-08 1986-11-25 Hewlett-Packard Company High pressure metering pump
EP0106009A1 (en) * 1982-06-29 1984-04-25 Shimadzu Corporation Liquid chromatograph
EP0236982A3 (en) * 1986-03-10 1989-11-08 Isco, Inc. Pump
US4733152A (en) * 1986-03-10 1988-03-22 Isco, Inc. Feedback system
EP0236982A2 (en) * 1986-03-10 1987-09-16 ISCO, Inc. Pump
US4917575A (en) * 1986-05-02 1990-04-17 The Dow Chemical Company Liquid chromatographic pump
FR2608225A1 (en) * 1986-12-10 1988-06-17 Imaje Sa Multi-function cell including a variable-volume chamber, and fluid-feed circuit for an ink-jet printing head which is equipped therewith
EP0277453A1 (en) * 1986-12-10 1988-08-10 Imaje S.A. Multi-functional cel having a chamber with a variable volume, and its use in a fluid supply circuit for an ink jet printer
WO1988004235A1 (en) * 1986-12-10 1988-06-16 Imaje S.A. Cell with multiple functions comprising a variable volume chamber and fluid supply circuit for an ink jet printing head fitted therewith
US4910529A (en) * 1986-12-10 1990-03-20 Imaje Sa Multifunction cell with a variable volume chamber and a fluid supply circuit for an ink jet printing head
US4998116A (en) * 1986-12-10 1991-03-05 Imaje Sa Multifunctional cell with a variable volume chamber and a fluid supply circuit for an ink jet printing head
EP0408177A1 (en) * 1989-06-08 1991-01-16 Beckman Instruments, Inc. Check valve cartridges with controlled pressure sealing
EP0433649A1 (en) * 1989-11-17 1991-06-26 ASKOLL S.p.A. Fluid metering pump
US5587082A (en) * 1995-06-07 1996-12-24 Teraoka; Iwao High osmotic pressure chromatography
US5861317A (en) * 1996-04-23 1999-01-19 Shimadzu Corporation Automatic sample injector and method of operating same
WO2002099852A2 (en) * 2001-05-30 2002-12-12 Senx Technology Novel piezoelectric transducer assemblies and methods for their use
WO2002099852A3 (en) * 2001-05-30 2004-02-19 Senx Technology Novel piezoelectric transducer assemblies and methods for their use
US20040136833A1 (en) * 2003-01-10 2004-07-15 Allington Robert W. High pressure reciprocating pump and control of the same
US20040151594A1 (en) * 2003-01-10 2004-08-05 Allington Robert W. High pressure reciprocating pump and control of the same
US6997683B2 (en) 2003-01-10 2006-02-14 Teledyne Isco, Inc. High pressure reciprocating pump and control of the same
US7037081B2 (en) 2003-01-10 2006-05-02 Teledyne Isco, Inc. High pressure reciprocating pump and control of the same
US20040204864A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20040205422A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20040204866A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Method and apparatus to enhance the signal to noise ratio in chromatography
US20040202575A1 (en) * 2003-04-09 2004-10-14 Allington Robert W. Signal to noise ratio in chromatography
US20050053471A1 (en) * 2003-08-14 2005-03-10 Lg Electronics Inc. Apparatus for controlling operation of reciprocating compressor
US7385368B2 (en) 2003-08-14 2008-06-10 Lg Electronics Inc. Apparatus for controlling operation of reciprocating compressor
US20100012192A1 (en) * 2006-04-12 2010-01-21 Waters Investments Limited Active valve and methods of operation thereof
US8297589B2 (en) 2006-04-12 2012-10-30 Waters Technologies Corp Active valve and methods of operation thereof
US20100158704A1 (en) * 2006-07-25 2010-06-24 Waters Technologies Corporation Compliant-seal check valve
US8671975B2 (en) 2006-07-25 2014-03-18 Waters Technologies Corporation Compliant-seal check valve
CN102410186A (en) * 2010-08-30 2012-04-11 罗伯特·博世有限公司 A fluid assembly and a method for controlling a pressure supply unit of the fluid assembly
CN102410186B (en) * 2010-08-30 2017-04-12 罗伯特·博世有限公司 A fluid assembly and a method for controlling a pressure supply unit of the fluid assembly
GB2483348A (en) * 2010-08-30 2012-03-07 Bosch Gmbh Robert A fluid assembly and a method for controlling a pressure supply unit of the fluid assembly
US9649436B2 (en) 2011-09-21 2017-05-16 Bayer Healthcare Llc Assembly method for a fluid pump device for a continuous multi-fluid delivery system
US9700672B2 (en) 2011-09-21 2017-07-11 Bayer Healthcare Llc Continuous multi-fluid pump device, drive and actuating system and method
US20160088978A1 (en) * 2011-10-19 2016-03-31 Bobrick Washroom Equipment, Inc. Automated fluid dispensing system
US10159384B2 (en) 2011-10-19 2018-12-25 Bobrick Washroom Equipment, Inc. Automated fluid dispensing system
US9591950B2 (en) * 2011-10-19 2017-03-14 Bobrick Washroom Equipment, Inc. Automated fluid dispensing system
US20150075230A1 (en) * 2012-03-22 2015-03-19 Wuxi Little Swan Co., Ltd. Washing Machine And Detergent Delivery Pump Assembly Thereof
US9493900B2 (en) * 2012-03-22 2016-11-15 Wuxi Little Swan Co., Ltd. Washing machine and detergent delivery pump assembly thereof
US20150345484A1 (en) * 2012-09-11 2015-12-03 Warner DÖBELIN Syringe pump system for pulse-free metering and precise mixing in hplc uhplc, micro-hplc and nano-hplc
US10507319B2 (en) 2015-01-09 2019-12-17 Bayer Healthcare Llc Multiple fluid delivery system with multi-use disposable set and features thereof
CN105546046B (en) * 2016-01-28 2018-03-27 北京星达科技发展有限公司 Non-circular gear group and pump drive mechanism
CN105546046A (en) * 2016-01-28 2016-05-04 北京星达科技发展有限公司 Non-circular gear set and transmission structure for pump
CN107327382A (en) * 2016-04-29 2017-11-07 殷图源 A kind of Novel plunger pump
CN108361168A (en) * 2018-02-05 2018-08-03 南京航空航天大学 It is staggered the time based on dual piston the continuous and stable type metering pump of compensation policy

Also Published As

Publication number Publication date
JPS4947908A (en) 1974-05-09
DE2311016C3 (en) 1979-07-26
GB1429854A (en) 1976-03-31
DE2311016B2 (en) 1978-11-23
CA991950A (en) 1976-06-29
DE2311016A1 (en) 1973-09-20
US3855129A (en) 1974-12-17
FR2175029A1 (en) 1973-10-19
CA991950A1 (en)
JPS6132620B2 (en) 1986-07-28
FR2175029B1 (en) 1974-05-17

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Legal Events

Date Code Title Description
RR Request for reexamination filed

Effective date: 19841205

B1 Reexamination certificate first reexamination
AS Assignment

Owner name: MILLIPORE INVESTMENT HOLDINGS LIMITED, A CORP. OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WATERS ASSOCIATES, INC., A CORP. OF DE;REEL/FRAME:005252/0241

Effective date: 19891120

AS Assignment

Owner name: WATERS TECHNOLOGIES CORPORATION, MASSACHUSETTS

Free format text: MERGER;ASSIGNOR:WATERS INVESTMENTS LIMITED;REEL/FRAME:022552/0606

Effective date: 20081117