US3765802A - Feed and proportioning pump - Google Patents

Feed and proportioning pump Download PDF

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Publication number
US3765802A
US3765802A US00161529A US3765802DA US3765802A US 3765802 A US3765802 A US 3765802A US 00161529 A US00161529 A US 00161529A US 3765802D A US3765802D A US 3765802DA US 3765802 A US3765802 A US 3765802A
Authority
US
United States
Prior art keywords
suction
diaphragm
displacement members
valve
pressure
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 - Lifetime
Application number
US00161529A
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English (en)
Inventor
W Leitermann
G Maurhoff
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Application granted granted Critical
Publication of US3765802A publication Critical patent/US3765802A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L23/00—Valves controlled by impact by piston, e.g. in free-piston machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0073—Piston machines or pumps characterised by having positively-driven valving the member being of the lost-motion type, e.g. friction-actuated members, or having means for pushing it against or pulling it from its seat
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/1207—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air using a source of partial vacuum or sub-atmospheric pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel whereby air and fuel are sucked into the mixture conduit
    • F02M2700/438—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters
    • F02M2700/4388—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters with fuel displacement by a pump
    • F02M2700/439—Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters with fuel displacement by a pump the pump being a membrane pump

Definitions

  • the object of the invention is to improve the feed and proportioning pump of the type specified in such manner as to ensure qucik starting of the pump.
  • the pump is provided with a chamber having a movable partition dividing the chamber into two parts capable of being connected to a common source of pressure or suction.
  • the partition is, in turn, connected with the displacement members.
  • a bistable valve capable of being actuated by the partition at the end of each complete stroke of the displacement members is also provided for establishing communication of one of the parts of the chamber with the source of pressure or suction at the end of one stroke of the displacement members and interrupting it at the end ofthe counterstroke.
  • the pump will start immediately as soon as pressure or suction prevails in one or both chambers, since to start the pump no spring action need be overcome that would otherwise require a certain pressure or suction build-up.
  • the movable partition is preferably in the form of a diaphragm.
  • one of the displacement members may also be advantageously formed by a diaphragm, bounding the working chamber for one of the liquids to be handled on one side and the chamber in which the movable partition is arranged on the other side.
  • the diaphragm acts as a displacement member, it is required to have a smaller effective area than the diaphragm acting as a partition, in order to get the necessary area differential to bring about the stroke through the suction prevailing in the part of the chamber in question.
  • the pump according to the invention may be employed as a mixture pump to deliver fuel and oil to the carburetor of a combustion engine, the actuation may occur where at high suctions and low flow volume a comparatively high liquid pressure will be built up, which may cause the float housing to overflow because of failure of the float needle valve to close tightly.
  • the part of the chamber between the two membranes may be connected with the atmosphere by way of a negative pressure valve. This will limit the suction in that part of the chamber, and hence the delivery pressure, to a certain valve.
  • the other part of the chamber is alternately connected by the bistable valve to the source of suction and to the atmosphere at the end of each full stroke.
  • the bistable position of the valve is produced by a U- shaped snap spring fixed to the diaphragm forming the partition. This spring has bends directed towards each other near its ends to cooperate with the cam attached to the valve. This spring brings the valve to a first position at which communication is established between part of the chamber with the atmosphere; and it shuts off communication with the source of suction at the end of a stroke, holding it in that position until the end of the next stroke, and then it brings the valve into the other position.
  • FIG. 1 shows a sectional view FIG. a fuel-oil proportioning pump according to the invention, with the valve in one position;
  • FIG. 2 repeats a portion of Fig. l with the valve in the other position.
  • a multipartite pump housing 1 has two working chambers 2 and 3.
  • Chamber 2 is bounded by a disphragm 4 connected with a piston 5 displaceable in chamber 3.
  • a fuel supply line 6 closed by a check valve 7 opens into chamber 2.
  • a feed line 8 closed by a second check valve 10 extends from chamber 2 and opens into a mixing chamber 9.
  • An oil line 11 closed by a spring-loaded shut-off valve 12 extends into chamber 3.
  • The'feed line 13 of chamber'3 opens into the mixing chamber 9 and is closed by the same check valve 10 as the feed line 8 of chamber 2. Extending from the mixing chamber 9 is a mixture line 14 leading to the float chamber of the carburetor.
  • the diaphragm 4 cooperates in defining a motorchamber 15 opposite chamber 2.
  • a diaphragm 16 divides motor chamber 15 into two parts 17 and 18 and is advantageously connected with diaphragm 4 and piston 5.
  • Diaphragm 16 has a greater effective area than diaphragm 4.
  • a suction line 19 communicating with the intake of the combustion engine or with a negative pressure reservoir opens by way of a branch 20 into chamber part 18 and by way of another branch 21 into chamber part 17.
  • Part 17 is capable of being connected to the atmosphere as well as by means of a line 22.
  • Lines 21 and 22 are capable of being shut off alternately by a valve 23 actuated by diaphragm 16 at the end of each of its strokes.
  • a U-shaped snap spring 24 is attached to diaphragm 16, having bends 25 directed towards each other near its ends to cooperate with a cam 26 mounted on valve 23.
  • Cam 26 forms the end stop for valve 23 in one direction, while the end stop in the other direction is formed by a shoulder 27.
  • cam 26 is in the form of a disc whose periphery is beveled on both sides.
  • Valve 23 has two constrictions 23a and 23b which alternately open line 21 or line 22, as shown in FIGS. 1 and 2.
  • a passage 28 extends from chamber part 17 and opens into a chamber 29 bounded by a disphragm 30 connected with the shut-off valve 12.
  • chamber part 18 is conveniently connected to the atmosphere by way of a negative pressure valve 31.
  • This valve 31 limits the maximum suction in chamber part 18 to a certain valve.
  • a throttling means 32 is provided in branch line 20.
  • a feed and proportioning pump for delivering two different liquids in a given proportion by flow volume and in particular delivering fuel and oil to a mixturelubricated combustion engine having two interconnected displacement members executing their suction strokes simultaneously and their delivery strokes simultaneously and arranged in individual pumping chambers each communicating with a separate suction line and a common delivery line by way of opposing acting check valves, one of said displacement members being a diaphragm and forming a portion of one of said pumping chambers, a motor chamber on the opposite side of said first diaphragm, a second diaphragm connected to the first mentioned diaphragm and dividing the motor chamber into two spaces capable of being connected to a common source of pressure or suction, said two diaphragms having different effective areas, a bistable valve capable of being actuated by the second diaphragm at the end of each stroke of the displacement members, one of the spaces being between the diaphragms and being continuously connected to the source of pressure or suction during operation'of
  • a feed and proportioning pump for delivering two particular liquids in a given proportion by flow volume and in particular delivering fuel and oil to a mixturelubricated combustion engine, having two interconnected displacement members executing their suction strokes simultaneously and their delivery strokes simultaneously and arranged in individual pumping chambers each communicating with a separate suction line and a common delivery line by way of opposing acting check valves, one of said displacement members being a diaphragm and forming a portion of one of said pumping chambers, a motor chamber on the opposit side of said first diaphragm, a second diaphragm connected to the first mentioned diaphragm and dividing the motor chamber into two spaces capable of being connected to a common source of pressure or suction, one of the spaces being between the diaphragms and being continuously connected to the source of pressure or suction during operation of the pump, said two diaphragms having differenteffective areas, a U-shaped snap spring attached to the second diaphragm, a bistable valve capable of being actuated by

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
US00161529A 1970-07-14 1971-07-12 Feed and proportioning pump Expired - Lifetime US3765802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702034816 DE2034816A1 (de) 1970-07-14 1970-07-14 Forder und Dosierpumpe

Publications (1)

Publication Number Publication Date
US3765802A true US3765802A (en) 1973-10-16

Family

ID=5776692

Family Applications (1)

Application Number Title Priority Date Filing Date
US00161529A Expired - Lifetime US3765802A (en) 1970-07-14 1971-07-12 Feed and proportioning pump

Country Status (4)

Country Link
US (1) US3765802A (en, 2012)
DE (1) DE2034816A1 (en, 2012)
FR (1) FR2101594A5 (en, 2012)
GB (1) GB1296334A (en, 2012)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923427A (en) * 1974-09-16 1975-12-02 Itt Differential volume pump
US4263602A (en) * 1978-11-30 1981-04-21 Sharp Kabushiki Kaisha Constant flow rate liquid supply pump
US4343596A (en) * 1978-06-29 1982-08-10 Sharp Kabushiki Kaisha Constant flow rate liquid supply pump
US4357617A (en) * 1978-06-29 1982-11-02 Sharp Kabushiki Kaisha Ink recirculating device of ink jet printer
FR2515256A1 (fr) * 1981-10-23 1983-04-29 Outboard Marine Corp Pompe mixte a carburant et huile actionnee par pression
WO1983004242A1 (en) * 1982-06-04 1983-12-08 M&T Chemicals Inc. Air operated diaphragm pump system
US4473340A (en) * 1981-10-08 1984-09-25 Outboard Marine Corporation Combined fluid pressure actuated fuel and oil pump
US4515537A (en) * 1981-09-03 1985-05-07 Grunbeck Wasserauebereitung Gmbh Dosing pump
US4523903A (en) * 1982-03-24 1985-06-18 Grunbeck Wasseraufbereitung Gmbh Dosing pump
US4539949A (en) * 1981-10-08 1985-09-10 Outboard Marine Corporation Combined fluid pressure actuated fuel and oil pump
US4551076A (en) * 1983-10-07 1985-11-05 Outboard Marine Corporation Fluid driven pump with one-way valve in fluid inlet
US4552101A (en) * 1983-02-07 1985-11-12 Outboard Marine Corporation Fluid pressure actuated motor with pneumatically-coupled pistons
US4573932A (en) * 1984-02-08 1986-03-04 Outboard Marine Corporation Electrical fluid pumping device including first and second pumping portions
US4594970A (en) * 1985-02-11 1986-06-17 Outboard Marine Corporation Marine installation including fuel/oil mixing device
USRE32577E (en) * 1983-10-07 1988-01-12 Outboard Marine Corporation Fluid pumping device for use with a fluid pump
US4807573A (en) * 1987-08-15 1989-02-28 Andreas Stihl Fuel injection arrangement for a two-stroke engine
US5470305A (en) * 1993-04-19 1995-11-28 Stryker Corporation Irrigation handpiece with built in pulsing pump
US6213970B1 (en) 1993-12-30 2001-04-10 Stryker Corporation Surgical suction irrigation
US6746419B1 (en) 1993-04-19 2004-06-08 Stryker Corporation Irrigation handpiece with built in pulsing pump
US20040115074A1 (en) * 2000-09-29 2004-06-17 Sven Huber Device for generating a reducing agent/air mixture
US20050034711A1 (en) * 2003-08-04 2005-02-17 Yoshikazu Yamada Fuel supply control system for engine
FR2862105A1 (fr) * 2003-11-07 2005-05-13 Stephane Urrutia Moteur hydraulique a soufflets et pompe doseuse comportant ledit moteur
WO2005045244A1 (fr) * 2003-11-07 2005-05-19 Urrutia Stephane Moteur hydraulique a soufflets et pompe doseuse comportant ledit moteur
US20050254971A1 (en) * 2002-04-08 2005-11-17 Ikuo Ohya Electromagnetic vibrating type diaphragm pump
US20060198740A1 (en) * 2005-03-01 2006-09-07 Shinya Yamamoto Diaphragm pump
US7481791B2 (en) 2000-09-11 2009-01-27 Stryker Corporation Surgical suction irrigator
US20090068034A1 (en) * 2007-09-12 2009-03-12 Pumptec, Inc. Pumping system with precise ratio output
US10167863B1 (en) 2012-03-28 2019-01-01 Pumptec, Inc. Proportioning pump, control systems and applicator apparatus
US10760557B1 (en) 2016-05-06 2020-09-01 Pumptec, Inc. High efficiency, high pressure pump suitable for remote installations and solar power sources
US10823160B1 (en) 2017-01-12 2020-11-03 Pumptec Inc. Compact pump with reduced vibration and reduced thermal degradation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383504A (en) * 1981-11-23 1983-05-17 Outboard Marine Corporation Marine propulsion device with mechanical fuel pressure operated device for supplying a fuel/oil mixture
DE3237212A1 (de) * 1981-10-08 1983-04-28 Outboard Marine Corp., 60085 Waukegan, Ill. Kombinierte kraftstoff- und oelpumpe
IN185128B (en, 2012) * 1991-06-21 2000-11-18 Orbital Eng Pty
AU665767B2 (en) * 1991-06-21 1996-01-18 Orbital Engine Company (Australia) Proprietary Limited A method and apparatus for metering oil for a two stroke cycle internal combustion engine
DE102013205774A1 (de) * 2013-04-02 2014-10-02 Bayerische Motoren Werke Aktiengesellschaft Kraftstoffpumpensystem
DE102013205773A1 (de) * 2013-04-02 2014-10-02 Bayerische Motoren Werke Aktiengesellschaft Kraftstoff-Pumpeneinheit

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322236A (en) * 1919-11-18 oe modesto
US2146398A (en) * 1936-05-14 1939-02-07 William H Lafferty Fuel pump
US2566436A (en) * 1947-10-11 1951-09-04 Cleveland Detroit Corp Beverage dispensing machine
US2615299A (en) * 1948-10-13 1952-10-28 Curtis Mfg Co J Vacuum booster for internal-combustion engines
US2948116A (en) * 1959-05-25 1960-08-09 Marquardt Corp Fluid actuated toggle mechanism
US2981058A (en) * 1955-09-16 1961-04-25 Solar Aircraft Co Multiple pressure sensing, indicating and control apparatus
DE1231933B (de) * 1958-11-28 1967-01-05 Bosch Gmbh Robert Hydraulische Druckregeleinrichtung
US3386388A (en) * 1966-06-22 1968-06-04 Rosenberg David Hydraulically actuated pump
US3486416A (en) * 1968-02-08 1969-12-30 Bendix Corp Fluid remote position indicator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322236A (en) * 1919-11-18 oe modesto
US2146398A (en) * 1936-05-14 1939-02-07 William H Lafferty Fuel pump
US2566436A (en) * 1947-10-11 1951-09-04 Cleveland Detroit Corp Beverage dispensing machine
US2615299A (en) * 1948-10-13 1952-10-28 Curtis Mfg Co J Vacuum booster for internal-combustion engines
US2981058A (en) * 1955-09-16 1961-04-25 Solar Aircraft Co Multiple pressure sensing, indicating and control apparatus
DE1231933B (de) * 1958-11-28 1967-01-05 Bosch Gmbh Robert Hydraulische Druckregeleinrichtung
US2948116A (en) * 1959-05-25 1960-08-09 Marquardt Corp Fluid actuated toggle mechanism
US3386388A (en) * 1966-06-22 1968-06-04 Rosenberg David Hydraulically actuated pump
US3486416A (en) * 1968-02-08 1969-12-30 Bendix Corp Fluid remote position indicator

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923427A (en) * 1974-09-16 1975-12-02 Itt Differential volume pump
US4343596A (en) * 1978-06-29 1982-08-10 Sharp Kabushiki Kaisha Constant flow rate liquid supply pump
US4357617A (en) * 1978-06-29 1982-11-02 Sharp Kabushiki Kaisha Ink recirculating device of ink jet printer
US4263602A (en) * 1978-11-30 1981-04-21 Sharp Kabushiki Kaisha Constant flow rate liquid supply pump
US4515537A (en) * 1981-09-03 1985-05-07 Grunbeck Wasserauebereitung Gmbh Dosing pump
US4473340A (en) * 1981-10-08 1984-09-25 Outboard Marine Corporation Combined fluid pressure actuated fuel and oil pump
US4539949A (en) * 1981-10-08 1985-09-10 Outboard Marine Corporation Combined fluid pressure actuated fuel and oil pump
AU579745B2 (en) * 1981-10-23 1988-12-08 Outboard Marine Corporation A fluid pressure actuated motor for a combined fuel and oil pump
FR2515256A1 (fr) * 1981-10-23 1983-04-29 Outboard Marine Corp Pompe mixte a carburant et huile actionnee par pression
AU579746B2 (en) * 1981-10-23 1988-12-08 Outboard Marine Corporation An internal combustion engine
US4523903A (en) * 1982-03-24 1985-06-18 Grunbeck Wasseraufbereitung Gmbh Dosing pump
WO1983004242A1 (en) * 1982-06-04 1983-12-08 M&T Chemicals Inc. Air operated diaphragm pump system
US4500264A (en) * 1982-06-04 1985-02-19 M&T Chemicals Inc. Air operated diaphragm pump system
US4552101A (en) * 1983-02-07 1985-11-12 Outboard Marine Corporation Fluid pressure actuated motor with pneumatically-coupled pistons
US4555221A (en) * 1983-10-07 1985-11-26 Outboard Marine Corporation Fluid pumping device for use with a fluid pump
USRE32577E (en) * 1983-10-07 1988-01-12 Outboard Marine Corporation Fluid pumping device for use with a fluid pump
US4551076A (en) * 1983-10-07 1985-11-05 Outboard Marine Corporation Fluid driven pump with one-way valve in fluid inlet
US4573932A (en) * 1984-02-08 1986-03-04 Outboard Marine Corporation Electrical fluid pumping device including first and second pumping portions
US4594970A (en) * 1985-02-11 1986-06-17 Outboard Marine Corporation Marine installation including fuel/oil mixing device
US4807573A (en) * 1987-08-15 1989-02-28 Andreas Stihl Fuel injection arrangement for a two-stroke engine
US6022329A (en) * 1993-04-19 2000-02-08 Stryker Corporation Irrigation handpiece with built in pulsing pump
US7144383B2 (en) 1993-04-19 2006-12-05 Stryker Corporation Surgical/medical irrigating handpiece with variable speed pump, integrated suction and battery pack
US5470305A (en) * 1993-04-19 1995-11-28 Stryker Corporation Irrigation handpiece with built in pulsing pump
US6746419B1 (en) 1993-04-19 2004-06-08 Stryker Corporation Irrigation handpiece with built in pulsing pump
US5718668A (en) * 1993-04-19 1998-02-17 Stryker Corporation Irrigation handpiece with built in pulsing pump
US6213970B1 (en) 1993-12-30 2001-04-10 Stryker Corporation Surgical suction irrigation
US6623445B1 (en) 1993-12-30 2003-09-23 Stryker Corporation Surgical suction irrigator
US7297133B2 (en) 1993-12-30 2007-11-20 Stryker Corporation Surgical suction irrigator
US7481791B2 (en) 2000-09-11 2009-01-27 Stryker Corporation Surgical suction irrigator
US20040115074A1 (en) * 2000-09-29 2004-06-17 Sven Huber Device for generating a reducing agent/air mixture
US7431573B2 (en) * 2000-09-29 2008-10-07 Robert Bosch Gmbh Device for generating a reducing agent/air mixture
US7661933B2 (en) * 2002-04-08 2010-02-16 Techno Takatsuki Co., Ltd. Electromagnetic vibrating type diaphragm pump
US20050254971A1 (en) * 2002-04-08 2005-11-17 Ikuo Ohya Electromagnetic vibrating type diaphragm pump
US20050034711A1 (en) * 2003-08-04 2005-02-17 Yoshikazu Yamada Fuel supply control system for engine
US6973922B2 (en) * 2003-08-04 2005-12-13 Honda Motor Co., Ltd. Fuel supply control system for engine
FR2862105A1 (fr) * 2003-11-07 2005-05-13 Stephane Urrutia Moteur hydraulique a soufflets et pompe doseuse comportant ledit moteur
WO2005045244A1 (fr) * 2003-11-07 2005-05-19 Urrutia Stephane Moteur hydraulique a soufflets et pompe doseuse comportant ledit moteur
US20060198740A1 (en) * 2005-03-01 2006-09-07 Shinya Yamamoto Diaphragm pump
US7481628B2 (en) * 2005-03-01 2009-01-27 Kabushiki Kaisha Toyota Jidoshokki Diaphragm pump
US20090068034A1 (en) * 2007-09-12 2009-03-12 Pumptec, Inc. Pumping system with precise ratio output
US10167863B1 (en) 2012-03-28 2019-01-01 Pumptec, Inc. Proportioning pump, control systems and applicator apparatus
US10724515B1 (en) * 2012-03-28 2020-07-28 Pumptec, Inc. Proportioning pump, control systems and applicator apparatus
US10760557B1 (en) 2016-05-06 2020-09-01 Pumptec, Inc. High efficiency, high pressure pump suitable for remote installations and solar power sources
US10823160B1 (en) 2017-01-12 2020-11-03 Pumptec Inc. Compact pump with reduced vibration and reduced thermal degradation

Also Published As

Publication number Publication date
GB1296334A (en, 2012) 1972-11-15
FR2101594A5 (en, 2012) 1972-03-31
DE2034816A1 (de) 1972-01-20

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