US3228560A - Apparatus for mixing fluids - Google Patents

Apparatus for mixing fluids Download PDF

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Publication number
US3228560A
US3228560A US404378A US40437864A US3228560A US 3228560 A US3228560 A US 3228560A US 404378 A US404378 A US 404378A US 40437864 A US40437864 A US 40437864A US 3228560 A US3228560 A US 3228560A
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United States
Prior art keywords
bellows
piston
pumping device
pressure chamber
fluid
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
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US404378A
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English (en)
Inventor
Tacchi Percy George
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.)
Slip International Ltd
Original Assignee
Slip International 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
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Publication of US3228560A publication Critical patent/US3228560A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
    • A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
    • A01C23/042—Adding fertiliser to watering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/105—Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/105—Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components
    • B01F25/1051—Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components of the mixing valve type
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/02—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00 having movable cylinders
    • F04B19/022—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00 having movable cylinders reciprocating 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/125—Reciprocating valves
    • F04B53/126—Ball valves
    • 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
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2499—Mixture condition maintaining or sensing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2564—Plural inflows
    • Y10T137/2572—One inflow supplements another
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2607—With pressure reducing inlet valve
    • Y10T137/261—Relief port through common sensing means

Definitions

  • This invention relates to apparatus for mixing fluids and is specifically concerned with apparatus for injecting a relatively small quantity of a secondary fluid into a flow of a primary fluid.
  • the invention is concerned with apparatus which will enable a secondary fluid such as a detergent to be injected into water which may be used for washing purposes, the water being used through a hose or spray gun or like means.
  • the object of the invention is to provide a simple form of apparatus for injecting a secondary fluid into the flow of a primary fluid which can be easily controlled from a position remote from the apparatus.
  • I provide apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body having an inlet for the primary fluid and an outlet for fluid, a pressure responsive device within said body arranged to divide the space within the body into a high pressure chamber and a low pressure chamber, a passage of restricted cross-section extending between said high pressure and low pressure chambers, a pumping device connected to said pressure responsive devices, means connecting the pumping device to a supply of secondary fluid and means connecting the pumping device to the low pressure chamber to pass secondary fluid from the pumping device into the low pressure chamber.
  • the pressure responsive device may comprise a bellows and the pumping device may be connected to the closed end of the bellows, said pumping device comprising a cylinder and co-operating piston, relative movement therebetween being produced by the movement of the close-d end of the bellows and said pumping device being connected to a supply of secondary fluid for pumping secondary fluid into said low pressure chamber.
  • I provide apparatus for injecting a secondary fluid into a flow of a primary fluid
  • a hollow body having an inlet for the primary fluid and an outlet for fluid, a pressure responsive device within said body arranged to divide the space within the body into a high pressure chamber and a low pressure chamber, a passage of restricted crosssection extending between said high pressure and low pressure chambers, a cylinder connected to the body and having a piston working therein which is connected to the pressure responsive device for movement therewith, means connecting the cylinder to a supply of secondary fluid and means connecting the interior of the cylinder with the low pressure chamber to pass secondary fluid from the cylinder into the low pressure chamber.
  • FIGURE 1 is a section through one form of apparatus, and,
  • FIGURE 2 is a plan view.
  • the hollow body comprises a substantially cylindrical body having an upper part which is connected in fluid-tight manner with a lower part 11 and secured thereto by a plurality of screws 12 and the upper part 10 of the body is provided with an inlet 13 which can be connected to a suitable supply of cold or hot water whilst the lower part 11 of the body is provided with an outlet 14 to which may be connected the end of a hose leading to a jet or spray gun or the like in cases where the apparatus is used for washing purposes.
  • the base of the apparatus is closed by a plate 15 in the centre of which is an upwardly extending hollow boss 16 forming a bearing for sliding engagement by the lower end of stem 17 which extends axially upwards into the body and has its upper end externally threaded and secured in an axial opening in the lower end of a piston 18.
  • the piston 18 is slidably engaged within a cylinder 19 formed in the upper wall 20 of the cylindrical body, and at its upper end the cylinder has secured thereto a connection 21 which has a pipe 22 leading to a supply of the secondary fluid, so that the pipe 22 forms the inlet supply for the cylinder 19.
  • the connection 21 includes a screwed plug 23 which screws into the upper end of the cylinder 19 and which has, extending therethrough, an axial passage 24 in which is housed a spring controlled ball valve 25 acting as a non-return valve.
  • the piston 18 has an axial passage 26 extending therethrough to communicate with the passage 24 through the screwed plug and a further non-return spring controlled ball valve 27 is located within the axial passage 26. Finally, there is a transverse passage 28 extending from the axial passage 26 through the piston to the underside or low pressure side thereof so as to provide a connection via pipe 22 passages 24 and 26 with the interior of the bellows 29.
  • the bellows 2& has its upper end clamped between an upper plate 36 and a lower plate 31, this lower plate 31 being formed integrally with the piston 18 and the two plates being clamped together by suitable screws to firmly secure the upper end of the bellows 29.
  • the lower end of the bellows is secured to a ring 32 anchored into an inwardly extending flange 33 in the lower part 11.
  • the upper and lower body parts have projections 34 and 35 respectively and formed therein is a passage 36 which constitutes the passage of restricted cross-section providing communication between the high pressure space 37 on the one side of the bellows and the low pressure space 38 on the other side or interior of the bellows.
  • the passage 36 is in communication with the spaces 37 and 38 respectively by means of openings 39, 4%) in the wall of the upper and lower body parts respectively.
  • the upper end of the passage 36 is internally threaded and has engaged therein a screw plug 41, the lower end of which is adapted to project across the opening 39 so that by adjusting the position of the screw plug 31 the operative cross-sectional area of opening 39 can be varied to adjust the restriction on the flow from the high pressure chamber 37 to the low pressure chamber 38 thus varying the differential pressure across the bellows 29.
  • the extreme upper end of the passage 36 is closed by a plug 42 with a spring 43 acting between this plug and the upper end of the plug 41 to prevent any unintentional rotation of plug 41 during operation of the device.
  • the inlet 13 of the apparatus When used, the inlet 13 of the apparatus is connected to a suitable supply of cold water such as a main supply, or hot water, and the outlet 14 is connected to the remote position where the washing or other operation is to take place.
  • a suitable supply of cold water such as a main supply, or hot water
  • a flexible hose may connect the outlet 14 to a jet or spray gun.
  • the operator can obtain a quantity of secondary fluid whenever desired by simply momentarily shutting off the jet or spray gun to cause the quantity of secondary fluid to be discharged into the cold water for use when the jet or spray gun is next opened up.
  • the quantity of secondary fluid can be dispensed into the water as and when required without any significant interruption of the washing or other operation which is being carried out.
  • the outlet is opened up again the detergent is dispensed with the cold water for a limited period and then, so long as the flow remains uninterrupted, clear water is available for rinsing.
  • control being by means of valve or like in the outlet, it may equally well be by means of a valve in the inlet supply.
  • the piston of the dispenser may be formed in, or provided in, an end wall of the hollow body and the cylinder may be connected to the closed end of the bellows and it should be appreciated that in place of a piston and cylinder, any other form of pumping device may be employed deriving its operative movement from the movement of the bellows.
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body of substantially cylindrical form having an inlet for the primary fluid at one end and an outlet for fluid at the other end, a pressure responsive bellows disposed within the body to divide the interior thereof into a high pressure chamber and a low pressure chamber, there being a passage of restricted cross-section extending between the high and low pressure chambers, a pumping device comprising a cylinder and a piston slidable therein, means connecting said pumping device to the closed end of the bellows whereby movement of said bellows produces relative movement between said cylinder and piston, means connecting said pumping device to a supply of a secondary fluid, and means connecting said pumping device to the low pressure chamber.
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body having a cylindrical interior, a pressure responsive device disposed within the interior of the body and forming a movable partition extending across the interior of the body transverse to the axis thereof, which partition divides the interior of the body into a high pressure chamber at one end of the body and a low pressure chamber at the axially opposite end thereof, an inlet for the primary fluid into the high pressure chamber, an outlet for the primary fluid, and secondary fluid injected therein, from the low pressure chamber, there being a permanently open passage of restricted cross-section extending through the body, through which fluid flows, from the high pressure chamber to the low pressure chamber, the restriction upon flow created by said passage resulting in a difference in fluid pressure between said high and low pressure chambers and resultant differential pressure acting upon said pressure responsive device causing movement thereof in the direction of said axis, a pumping device, disposed within said body and comprising a cylinder and a piston, means connecting said pumping device to said pressure
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body having a cylindrical interior, a pressure responsive device disposed within the interior of the body and forming a movable partition extending across the interior of the body transverse to the axis thereof, which partition divides the interior of the body into a high pressure chamber at one end of the body and a low pressure chamber as the axially opposite end thereof, an inlet for the primary fluid into the high pressure chamber, an outlet for the primary fluid, and secondary fluid injected therein, from the low pressure chamber, the body, at one side thereof, having a projection on its wall with a permanently open passage of restricted cross-section extending through the projection and communicating at its end with the high and low pressure chambers through openings in the wall of the body through which passage fluid flows from the high pressure chamber to the low pressure chamber, the restriction upon flow created by said passage resulting in a difference in fluid pressure between said high and low pressure chambers and resultant differential pressure acting upon said pressure responsive device causing movement thereof in the direction of said
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body having a cylindrical interior, a pressure responsive device disposed within the interior of the body and forming a movable partition extending across the interior of the body transverse to the axis thereof, which partition divides the interior of the body into a high pressure chamber at one end of the body and a low pressure chamber at the axially opposite end thereof, an inlet for the primary fluid into the high pressure chamber, an outlet for the primary fluid, and secondary fluid injected therein, from the low pressure chamber, there being a permanently open passage of restricted crosssection extending through the body, through which fluid flows, from the high pressure chamber to the low pressure chamber, the restriction upon flow created by said passage resulting in a difference in fluid pressure between said high and low pressure chambers and resultant differential pressure acting upon said pressure responsive device causing movement thereof in the direction of said axis, a pumping device comprising, a cylinder provided in the end of the body adjacent the primary fluid inlet, a piston connected to the pressure
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body having a cylindrical interior, a pressure responsive bellows disposed within the interior of the body and forming a movable partition extending across the interior of the body transverse to the axis thereof, which partition divides the interior of the body into a high pressure chamber at one end of the body and a low pressure chamber at the axially opposite end thereof, an inlet for the primary fluid into the high pressure chamber, an outlet for the primary fluid, and secondary fluid injected therein, from the low pressure chamber, there being a permanently open passage of restricted cross-section extending through the the body, through which fluid flows, from the high pressure chamber to the low pressure chamber, the restriction upon flow created by said passage resulting in a difference in fluid pressure between said high and low pressure chambers and resultant differential pressure acting upon said pressure responsive bellows causing movement thereof in the direction of said axis, a pumping device comprising a cylinder provided in the end of the body adjacent the primary fluid inlet, a
  • Apparatus for injecting a secondary fluid into a flow of primary fluid comprising a hollow body of substantially cylindrical form having an inlet for the primary fluid at one end and an outlet for fluid at the other end, a pressure responsive bellows disposed within the body to divide the interior thereof into a high pressure chamber and a low pressure chamber, there being a passage of restricted cross-section extending between the high and low pressure chambers, a cylinder provided in the end of the body adjacent the primary fluid inlet, a piston connected to the closed end of the bellows adjacent the primary fluid inlet, the piston having extending therethrough a passage which provides communication between the interior of the cylinder and the interior of the bellows, which latter forms the low pressure chamber, means connecting the cylinder to a supply of secondary fluid and means connecting the interior of the cylinder to the low pressure chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Accessories For Mixers (AREA)
  • Nozzles (AREA)
  • Reciprocating Pumps (AREA)
US404378A 1964-01-22 1964-10-16 Apparatus for mixing fluids Expired - Lifetime US3228560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2808/64A GB1089511A (en) 1964-01-22 1964-01-22 Apparatus for mixing fluids in constant proportions

Publications (1)

Publication Number Publication Date
US3228560A true US3228560A (en) 1966-01-11

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Family Applications (2)

Application Number Title Priority Date Filing Date
US404378A Expired - Lifetime US3228560A (en) 1964-01-22 1964-10-16 Apparatus for mixing fluids
US425144A Expired - Lifetime US3356101A (en) 1964-01-22 1965-01-13 Apparatus for mixing fluids at different temperatures

Family Applications After (1)

Application Number Title Priority Date Filing Date
US425144A Expired - Lifetime US3356101A (en) 1964-01-22 1965-01-13 Apparatus for mixing fluids at different temperatures

Country Status (4)

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US (2) US3228560A (enrdf_load_stackoverflow)
DE (1) DE1291451B (enrdf_load_stackoverflow)
GB (1) GB1089511A (enrdf_load_stackoverflow)
NL (1) NL6500745A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356101A (en) * 1964-01-22 1967-12-05 Slip Internat Ltd Apparatus for mixing fluids at different temperatures
US3577569A (en) * 1969-03-21 1971-05-04 Thetford Corp Toilet apparatus
US3818924A (en) * 1971-10-05 1974-06-25 L Carlyle Fluid metering device
US3971341A (en) * 1973-12-18 1976-07-27 Dan Bron Automatic proportioner for low-pressure watering troughs
USRE29193E (en) * 1971-10-05 1977-04-26 Economics Laboratory, Inc. Fluid metering device
EP0020309A1 (en) * 1979-05-04 1980-12-10 CENTRO RICERCHE FIAT S.p.A. Liquid additive metering device
US4411601A (en) * 1980-12-16 1983-10-25 Societe D'assistance Technique Pour Produits Nestle S.A. Pump for metering two distinct fluids
US4479758A (en) * 1980-12-16 1984-10-30 Societe D'assistance Technique Pour Produits Nestle S.A. Piston filler
US20050005764A1 (en) * 2003-07-08 2005-01-13 Walton Frank A. On/off switch for liquid additive injection pump
USD602512S1 (en) 2008-10-24 2009-10-20 Dosmatic Usa, Inc. Piston assembly
USD603427S1 (en) 2008-09-15 2009-11-03 Dosmatic Usa, Inc. On-off plunger
USD603435S1 (en) 2008-08-29 2009-11-03 Dosmatic Usa, Inc. Dosage piston retention clip
US20100051716A1 (en) * 2008-09-03 2010-03-04 Walton Frank A Automated switch for liquid additive injection pump

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US4026468A (en) * 1975-08-14 1977-05-31 Mccord Corporation Headlamp cleaning assembly
US4329067A (en) * 1978-04-19 1982-05-11 Bruce J. Landis Fluid mixer
US4466779A (en) * 1982-09-30 1984-08-21 Nixon Jeddy D Check valve with injector
US4924900A (en) * 1988-08-02 1990-05-15 Systems Specialties Adjustable ratio mixing valve
JP4698230B2 (ja) * 2005-01-07 2011-06-08 サーパス工業株式会社 流量調整装置
US8636484B2 (en) * 2009-01-09 2014-01-28 Tom M. Simmons Bellows plungers having one or more helically extending features, pumps including such bellows plungers, and related methods
US20100178182A1 (en) * 2009-01-09 2010-07-15 Simmons Tom M Helical bellows, pump including same and method of bellows fabrication
EP2564066B1 (en) * 2010-04-30 2019-03-06 Graco Minnesota Inc. Internal bellows pump fluid path
CN118993276B (zh) * 2024-10-17 2025-03-14 南通佳昱环保科技有限公司 一种工业废水处理沉淀池的自动加药设备

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US932386A (en) * 1908-08-12 1909-08-24 James D Brown Automatic syrup delivery for soda-fountains.
US2372360A (en) * 1941-03-21 1945-03-27 Richard T Cornelius Dispensing device
US2417372A (en) * 1944-01-15 1947-03-11 Harry W Morris Proportional liquid reagent feeding device actuated by fluid in a conduit
US2526920A (en) * 1947-09-08 1950-10-24 Paul L Stolz Automatic injector
US2585172A (en) * 1948-07-06 1952-02-12 Lyon Ind Inc Mixing mechanism for liquid and beverage dispensing apparatus

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US862867A (en) * 1906-03-28 1907-08-06 Lewis Watson Eggleston Pneumatic pumping apparatus.
US1172527A (en) * 1915-01-02 1916-02-22 Morris & Company Valve structure.
US1546998A (en) * 1923-10-15 1925-07-21 Curtis E Rogers Automatic suction valve
US2635634A (en) * 1945-12-07 1953-04-21 Jr Adolph E Thurber Multiple valve
US2921597A (en) * 1955-04-12 1960-01-19 Parr Keith Vacuum control apparatus
US3210938A (en) * 1962-08-20 1965-10-12 William M Mendez Pressure operated valve
GB1089511A (en) * 1964-01-22 1967-11-01 Percy George Tacchi Apparatus for mixing fluids in constant proportions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US932386A (en) * 1908-08-12 1909-08-24 James D Brown Automatic syrup delivery for soda-fountains.
US2372360A (en) * 1941-03-21 1945-03-27 Richard T Cornelius Dispensing device
US2417372A (en) * 1944-01-15 1947-03-11 Harry W Morris Proportional liquid reagent feeding device actuated by fluid in a conduit
US2526920A (en) * 1947-09-08 1950-10-24 Paul L Stolz Automatic injector
US2585172A (en) * 1948-07-06 1952-02-12 Lyon Ind Inc Mixing mechanism for liquid and beverage dispensing apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356101A (en) * 1964-01-22 1967-12-05 Slip Internat Ltd Apparatus for mixing fluids at different temperatures
US3577569A (en) * 1969-03-21 1971-05-04 Thetford Corp Toilet apparatus
US3818924A (en) * 1971-10-05 1974-06-25 L Carlyle Fluid metering device
USRE29193E (en) * 1971-10-05 1977-04-26 Economics Laboratory, Inc. Fluid metering device
US3971341A (en) * 1973-12-18 1976-07-27 Dan Bron Automatic proportioner for low-pressure watering troughs
EP0020309A1 (en) * 1979-05-04 1980-12-10 CENTRO RICERCHE FIAT S.p.A. Liquid additive metering device
US4411601A (en) * 1980-12-16 1983-10-25 Societe D'assistance Technique Pour Produits Nestle S.A. Pump for metering two distinct fluids
US4479758A (en) * 1980-12-16 1984-10-30 Societe D'assistance Technique Pour Produits Nestle S.A. Piston filler
US20050005764A1 (en) * 2003-07-08 2005-01-13 Walton Frank A. On/off switch for liquid additive injection pump
US6910405B2 (en) * 2003-07-08 2005-06-28 Dosmatic Usa, Inc. On/off switch for liquid additive injection pump
WO2005008060A3 (en) * 2003-07-08 2005-08-11 Dosmatic Usa Inc On/off switch for liquid additive injection pump
USD603435S1 (en) 2008-08-29 2009-11-03 Dosmatic Usa, Inc. Dosage piston retention clip
US20100051716A1 (en) * 2008-09-03 2010-03-04 Walton Frank A Automated switch for liquid additive injection pump
USD603427S1 (en) 2008-09-15 2009-11-03 Dosmatic Usa, Inc. On-off plunger
USD602512S1 (en) 2008-10-24 2009-10-20 Dosmatic Usa, Inc. Piston assembly

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DE1291451B (de) 1969-03-27
GB1089511A (en) 1967-11-01
NL6500745A (enrdf_load_stackoverflow) 1965-07-23
US3356101A (en) 1967-12-05

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