DE69026945T2 - PULSE-FREE PISTON PUMP - Google Patents

PULSE-FREE PISTON PUMP

Info

Publication number
DE69026945T2
DE69026945T2 DE69026945T DE69026945T DE69026945T2 DE 69026945 T2 DE69026945 T2 DE 69026945T2 DE 69026945 T DE69026945 T DE 69026945T DE 69026945 T DE69026945 T DE 69026945T DE 69026945 T2 DE69026945 T2 DE 69026945T2
Authority
DE
Germany
Prior art keywords
pulse
piston pump
free piston
free
pump
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 - Fee Related
Application number
DE69026945T
Other languages
German (de)
Other versions
DE69026945D1 (en
Inventor
Kenneth Lehrke
Bruce Mcfadden
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.)
Graco Minnesota Inc
Original Assignee
Graco Inc
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 Graco Inc filed Critical Graco Inc
Publication of DE69026945D1 publication Critical patent/DE69026945D1/en
Application granted granted Critical
Publication of DE69026945T2 publication Critical patent/DE69026945T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • F04B11/0058—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control
    • F04B11/0066—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control with special shape of the actuating element
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
DE69026945T 1989-08-08 1990-07-05 PULSE-FREE PISTON PUMP Expired - Fee Related DE69026945T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39109789A 1989-08-08 1989-08-08
PCT/US1990/003786 WO1991002158A1 (en) 1989-08-08 1990-07-05 Pulseless piston pump

Publications (2)

Publication Number Publication Date
DE69026945D1 DE69026945D1 (en) 1996-06-13
DE69026945T2 true DE69026945T2 (en) 1996-10-31

Family

ID=23545226

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69026945T Expired - Fee Related DE69026945T2 (en) 1989-08-08 1990-07-05 PULSE-FREE PISTON PUMP

Country Status (4)

Country Link
EP (1) EP0486556B1 (en)
JP (1) JPH05501138A (en)
DE (1) DE69026945T2 (en)
WO (1) WO1991002158A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531064B4 (en) * 1994-08-23 2005-02-03 Nikkiso Co., Ltd. Pulsation-free pump
DE102008007406A1 (en) * 2008-02-04 2009-08-06 Continental Automotive Gmbh High pressure pump has plunger, which is provided with longitudinal axis at drive shaft over roller for indirect supporting of piston, where roller is coupled with plunger in rotating manner
DE102014220886A1 (en) * 2014-10-15 2016-04-21 Continental Automotive Gmbh Pump for conveying a fluid and method for assembling the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145339A (en) * 1989-08-08 1992-09-08 Graco Inc. Pulseless piston pump
FR2783021B1 (en) * 1998-09-09 2000-10-13 Inst Francais Du Petrole METHOD AND SYSTEM FOR FLUID PUMPING USING A PUMP WITH CONSTANT FLOW AT SUCTION OR DELIVERY
NO316653B1 (en) 2000-09-15 2004-03-22 Nat Oilwell Norway As Device by piston machine and method of use in controlling the pistons
ITUB20155940A1 (en) * 2015-11-26 2017-05-26 Settima Meccanica S R L Soc A Socio Unico Improved axial piston volumetric pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE437298C (en) * 1924-04-20 1926-11-19 Guenther Schneggenburger Dipl Piston pump with multiple pistons
US2572952A (en) * 1947-09-02 1951-10-30 Theodore R Rymal Self-lubricating piston rod
US2711137A (en) * 1951-02-20 1955-06-21 Clifford B Moller Chemical feed pump
DE2021651A1 (en) * 1970-05-02 1971-11-25 Teves Gmbh Alfred Cross-sectional contour for the stator cavity of a radial piston pump
US3680985A (en) * 1970-12-28 1972-08-01 Mec O Matic The Pump
US3945768A (en) * 1974-11-06 1976-03-23 Graco Inc. Fluid motor drives pump having an active inlet valve
DE2608664A1 (en) * 1976-03-03 1977-09-08 Niepmann Ag Walchwil DEVICE FOR GENERATING A UNIFORM CONVEYOR FLOW
US4453898A (en) * 1977-08-01 1984-06-12 The Perkin-Elmer Corporation Dual-piston reciprocating pump assembly
DE3113737C2 (en) * 1981-04-04 1984-09-06 Eckhard 4512 Wallenhorst Schulz Piston pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531064B4 (en) * 1994-08-23 2005-02-03 Nikkiso Co., Ltd. Pulsation-free pump
DE102008007406A1 (en) * 2008-02-04 2009-08-06 Continental Automotive Gmbh High pressure pump has plunger, which is provided with longitudinal axis at drive shaft over roller for indirect supporting of piston, where roller is coupled with plunger in rotating manner
DE102014220886A1 (en) * 2014-10-15 2016-04-21 Continental Automotive Gmbh Pump for conveying a fluid and method for assembling the same

Also Published As

Publication number Publication date
EP0486556A1 (en) 1992-05-27
EP0486556B1 (en) 1996-05-08
DE69026945D1 (en) 1996-06-13
WO1991002158A1 (en) 1991-02-21
JPH05501138A (en) 1993-03-04
EP0486556A4 (en) 1992-07-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: GRACO MINNESOTA INC., MINNEAPOLIS, MINN., US

8339 Ceased/non-payment of the annual fee