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US2980032A - Fuel pump - Google Patents

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Publication number
US2980032A
US2980032A US79612259A US2980032A US 2980032 A US2980032 A US 2980032A US 79612259 A US79612259 A US 79612259A US 2980032 A US2980032 A US 2980032A
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Prior art keywords
diaphragm
valve
portion
flap
fuel
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Expired - Lifetime
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Kenneth C Schneider
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BROWN ENGINE PRODUCTS Inc
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BROWN ENGINE PRODUCTS Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302Arrangements 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
    • F02M2700/438Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters
    • F02M2700/4388Supply of liquid to a carburettor reservoir with limitation of the liquid level; Aerating devices; Mounting of fuel filters with fuel displacement by a pump
    • F02M2700/439Supply 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00Gas and liquid contact apparatus
    • Y10S261/68Diaphragm-controlled inlet valve
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7838Plural
    • Y10T137/7843Integral resilient member forms plural valves
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7879Resilient material valve
    • Y10T137/7888With valve member flexing about securement
    • Y10T137/7891Flap or reed

Description

April 1961 K. c. SCHNEIDER 2,980,032

FUEL PUMP Filed Feb. 27. 1959 FIG. I

INVENTOR KENNETH C. SCHNEIDER ATTORNEYS United States Patent FUEL PUMP Kenneth C. Schneider, Bethe], Conn., assignor to Brown Engine Products, Inc., a corporation of Connecticut Filed Feb. 27,1959, Ser. No. 796,122 6 Claims. (Cl. 103-150) only limited displacement out of the plane of the diaphragm.

In some diaphragm-type fuel pumps, unidirectional flow of fuel is maintained by flap type check valves integral with the diaphragm and operatively associated with the fuel inlet and outlet passages. Such check valve flaps are generally separate from the pumping portion of the diaphragm and are each enclosed in valve chambers formed in the body of the pump. When the pressure in the valve chamber is greater than the pressure in the fuel passage, the flap is urged tightly against its seat around the opening thereby preventing back-flow of fuel from the chamber into the passage. Conversely, when the pressure within the passage exceeds that within the chamber, the flap is unseated and displaced out of the plane of the diaphragm into the chamber thereby permitting the fuel in the passage to flow into the chamber. I

Flap valves of this type are usually formed of very thin sheet material which is highly flexible so that the flaps respond readily to small pressure differentials, and they are uniformly flat so that they can effect a continuous seal around the opening of the fuel passage. It has been found, however, that in diaphragms which have been in operation for long periods of time, the flaps often lose their original flatness and no longer seat readily to seal the fuel passages. Needless to say, this greatly reduces the efliciency of the pump since at each stroke a certain amount of fuel leaks under the distorted portions of the flap and correspondingly less fuel is delivered from the outlet of the pump.

There are many reasons why conventional flap elements lose their flat shape in this manner. The fact that they must be formed of such thin and flexible sheet material gives rise to some of the difliculty because if they are overstressed during the repeated bending of'the flap into and out of the plane of the diaphragm a permanent warped shape is imparted to the thin sheet material. It also appears that the flap elements are sometimes distorted by being unevenly stressed when the pump is assembled, due to excessive tightening together of the pump body members holding the diaphragm in place. Also, the

flaps are generally formed from synthetic elastomers which, if unevenely or excessively heated, are unable to resist curling during use.

One of the primary purposes of this invention, therefore, is to provide a fuel pump of the type described having flap elements integral with the pump diaphragm which remain uniformly flat even after long use. This is accomplished without departing from the use of thin flexible sheet materials from which conventional pumpdiaphragms are presently formed,'and also withoutradically altering the design of ordinary pump body members.

Patented Apr. 18,1961

Moreover, these advantages are achieved without adversely affecting the efliciency or fuel-delivery capacity of the pump.

' The invention provides a unitary flexible substantially flat sheet diaphragm for use in a diaphragm-type pump comprising a displaceable pumping portion adapted to partly define a pumping chamber, and at least one check valve portion adapted to control flow of fluid through the pump. The check valve portion comprises a flat valve flap having a base joined integrally with the diaphragm and a free end essentially separated by cut-out sections from the main body of the diaphragm. The free end of the valve flap is displaceable out of the plane of a cut-out section of the diaphragm; but at least one flexible web finger bridges the cutout section and joins the free end of the valve flap to the diaphragm. By this construction, displacement of the flap element out of the plane of the cut-out section is limited without being prevented, and the flap is restrained from permanently bending, curling, or otherwise becoming distorted out of its original uniformly flat shape.

, Preferred embodiments of the invention are described hereinbelow with reference to the accompanying drawing, wherein- Fig. l is an elevation partly in section of a pump according to the invention;

Fig. 2 is a section taken along the line 2-2 of Fig. l;

and

Fig. 3 is a plan view of a modified form of a pump diaphragm according to the invention.

Referring first to Figs. 1 and 2, the pump includes a pair of body members 10 and 11 which are fastened together in substantially face-to-face relationship by means of a plurality of screws 13 disposed about their corresponding peripheries. As seen in Fig. 1, the upper portion of the body member 11 is broken away to indicate that the pump may be incorporated in a larger assembly such as a carburetor. In this embodiment, the pump is of the type actuated by a source of fluctuating fluid pressure, though it can also be mechanically actuated by a cam shaft or similar means.

Separating the facing surfaces of the body members 10 and 11 is a flat uniformly thin flexible diaphragm 14 of circular shape. The diaphragm 14 includes a central pumping portion 15, separate inlet and outlet check valve portions 17 and 18 respectively, and a peripheral gasket portion indicated generally at 19 which makes up the remainder of its area. The gasket portion 19 of the diaphragm is that area which in the assembled pump underlies a gasket 21 positioned against the upper body member 11. Itwill be noted that the screws 13 extend through corresponding holes in both the gasket portion 19 of the diaphragm and the gasket 21. By this arrangement, the

gasket portion 19 of the diaphragm,,in conjunction with the gasket 21, provides a fluid tight seal which isolates each of the inlet and outlet check valve portions 17 and 18 and the pumping portion 15 from one another when the pump is assembled.

An actuating cavity 23 is formed in the upper body member 11. This cavity together with the upper side of the pumping portion 15 of the diaphragm defines an actuating chamber 24. The actuating chamber 24 communicates with a source of fluctuating fluid pressure (such I as the crank-case of a two-cycle engine) through an air passage 25.

A pumping cavity 27 is formed in the other pump body member 10. This latter cavity, together with the lower side of the pumping portion 15 of the diaphragm, defines a pumping chamber 28. As seen most clearly in Fig. 2, the check valve portion 17 includes a valve flap 29 integrally joined at its base to the adjacent gasket portion 19 of the; diaphragm. Its free end isseparat'egl '31 which bridge the cut-out sections 30. The valvefiaps 29'and theweb fingers 31 are of the same uniform thickness as the surrounding portions of the diaphragm, so they can be formed by stamping or punching out the cut-out sections 30.

Similarly, the outlet check valve portion 18 includes a valve flap 32 integrally joined at its base to the diaphragm, with its free end separated from the surrounding portion of the diaphragm by cut-out sections 33. A pair of integral webs 34 connect the free end of the valve flap 32 to the main body of the diaphragm across the cut-out sections 33.

The element of the fuel system of this novel pump can best be described in-the order in which they are encountered by fuel passing through the pump. Fuel is drawn into the pump through an inlet nozzle 36 into a suitable filter 37 which is held in place by a screw 38. The fuel then passes into an inlet passage 39 formed in the body member 10, proceeds through the inlet check valve portion 17 of the diaphragm 19 (as is described in detail below), and enters an inlet valve chamber 40 defined substantially by the body member 11. It is then directed from the valve chamber 40 through the cut-out section 30 of the diaphragm 14 into intersecting bores 41 and 42 in the body member and then into the pump ing chamber 28. From the pumping chamber 28, the fuel exits under pressure into the intersecting bores 43 and 44 and through the outlet check valve portion 18 of the diaphragm (as is also described in detail below). It then enters an outlet valve chamber 45 from which it proceeds under pressure to the outlet fuel passage 46.

The operation of this novel pump is as follows: The cyclically fluctuating air pressure in the actuating chamber 24 causes the pumping portion of the diaphragm 14 to flex alternately in and out of the pumping chamber 28. At each stroke of the pumping portion 15 out of the pumping chamber 28, the internal pressure in the pumping chamber 28 is decreased. This reduction in pressure is transmitted to the inlet valve chamber 40 and when the pressure therein drops below the pressure in the inlet fuel passage 39, the flap element 29 is lifted and fuel is sucked through into the pumping chamber. The webs 31, however, restrain the free end of the flap element 29 and prevent it from being displaced very far out of the plane of the surrounding portions of the diaphragm 14. At the same time, the webs 31 permit the flap 29 to be raised a sufiicient distance off its seat to allow the fuel to pass easily from the fuel inlet passages 39 into the pumping chamber 40.

As this takes place at the inlet check valve portion 17, the reduction in pressure in the pumping chamber 28 is also transmitted to the bore 44 adjacent the outlet check valve portion 18 of the diaphragm. This causes the pressure in the outlet valve chamber 45 to exceed that in the bore 44 and, as a result, the flap element 32 is forced tightly against its seat to seal off the opening. This prevents back-flow of fuel from the outlet passage 46 into the pumping chamber 28 at each intake stroke of the pumping portion 15 of the diaphragm.

Upon the completion of the intake stroke, the pumping portion 15 of the diaphragm moves downwardly into the pumping chamber 28 thereby increasing the pressure of the fuel therein. The eifect of this at the inlet check valve portion 17 is to force the flap element 25 against its seat to seal off the inlet passage. This prevents back-flow of fuel from the pumping chamber 28 into the inlet passage 39 during the pumping stroke of the diaphragm. At the outlet check valve portion 18 there is a simultaneous increase in pressure in the bore 44 which causes it to exceed the pressure within the outlet valve'chamber 45. This causes thefiap element-32 to be lifted from-its seat (as shown in Fig. "1)*and permits 4: a some of the fuel in the pumping chamber 28 to be forced out under pressure into the outlet passage 46. As the flap element 32 is lifted in this manner, however, the webs 34 prevent it from being displaced very far out of the plane of the surrounding diaphragm, yet do not substantially hinder the fiow of fuel into the valve chamber 45.

Because of the restraining action of the webs 31 and 34, the flap elements 29-and-32' respectively are not excessively displaced. Asa result they do not become so stressed as to warp even after prolonged use. Also, if thermal stresses due to overheating tend to cause curling of the diaphragm material, the webs minimize the deformation of the valve fiaps and insure that they sufiiciently retain their original flat shape to continue to seat eifectively. The webs 31 and 34 likewise compensate for uneven stress which might be imparted to the flap elements 29 and 32 by excessive tightening together of the body members 10 and 11 during assembly of the pump.

Turning now to Fig. 3, a modified form of the pump diaphragm 50 is shown. The diaphragm 50 includes a central pumping portion 52, inlet and outlet check valve portions 53 and 54 respectively, and a peripheral gasket portion 55 which makes up the remainder of the diaphragms area. Since the diaphragm 50 is to be assembled with a pair of pump body members in the manner described previously, a plurality of apertures 57 are located in its gasket portion 55 to accommodate the screws for holding the pump body members together.

The inlet check valve portion 53 includes a cut-out section 59 into which extends a fiat valve flap 60, which is joined integrally at its base to the main body of the diaphragm. Bridging the cut-out section 59 and integrally joining the outermost end of the valve flap 60 to the main body of the diaphragm is a single web finger 61. This finger limits the displacement of the flap 60 out of the plane of the diaphragm sheet and aids in preventing it from being distorted out of its original flat shape. The cut-out section 59 shown in Fig. 3 extends to one side of the flap element 60. Hence, this check valve portion is adapted for use in a valve chamber wherein the inlet passage is not in radial alignment with the bores leading from the valve chamber to the pumping chamber.

The outlet check valve portion 54 is of still different construction. It includes a circular valve flap 63 disposed in a concentric cut-out section 64. The ,valve flap 63 is integrally joined to the main body of the diaphragm by' a plurality of web fingers 66 which bridge the cutout section 64. Any one of these web fingers can be regarded as defining the base of the circular valve flap, and the others as joined to the free end of the valve flap. This type of valve flap is particularly adapted for use in the outlet valve chamber of a pump wherein the fuel enters through the cut-out section and exits from the chamber without passing back through the diaphragm. An example of such arrangement is shown in Figs. 1 and 2 where the pressurized fuel enters from the bore 44 into the outlet valve chamber 45 and then exits therefrom through the outlet passage 46 without passing back through the diaphragm. One of the primary advantages of this outlet check valve portion 54 is that the flap element 63 is lifted substantially evenly from its seat when fuel passes therethrough, thereby tending to insure that the valve flap element seats fiat when it returns to sealing engagement with its associated fuel passage.

I claim:

1. For use in a diaphragm-type pump, a unitary flexible substantially flat sheet diaphragm comprising a displaceable pumping portion adapted to partly define a pumping chamber, at least one check valve portion adapted to control flow of fluid through. said pump, said check'valve portion comprising a fiat valve flap having a base integral with said diaphragm and an end portion essentially separatedby cut-outsections from the main body of said diaphragm, the end portion of said valve flap being dis.-

placeable out of the plane of said diaphragm, and at least one flexible web finger bridging said cut-out sections and joining the end portion of said valve flap tosaid diaphragm, said web finger limiting without preventing displacement of said end portion of the valve flap out of the plane of the diaphragm.

2. A diaphragm-type fuel pump comprising two body members joined together in substantially face-to-face relationship, a flexible diaphragm separating the substantially cojoined faces of said body members, said diaphragm including a pumping portion which partly defines a pumping chamber in one of said body members, both of said body members having fuel inlet and outlet passages formed therein communicating with said pumping chamber, said diaphragm also including check valve portions located in said fuel passages for controlling flow of fluid through said pump, at least one of said check valve portions comprising a flat valve flap having a base integral with said diaphragm and an end portionressentially separated by cut-out sections from the main body of said diaphragm, the end portion of said valve flap normally being in sealing relation with the fuel passage with which it is associated and being displaceable out of the plane of said diaphragm to permit flow of fuel through its associated fuel passage, and at least one flexible web finger bridging said cut-out sections and joining the end portion of said valve" flap to said diaphragm, said web finger limiting without preventing displacement of said end portion of the valve flap out of the plane of the diaphragm.

3. For use in a diaphragm-type fuel pump, a diaphragm of substantially flat flexible material comprising a displaceable pumping portion adapted to partly define a pumping chamber, and two separate check valve portions adapted to maintain unidirectional flow of fuel through said pump, each of said check valve portions comprising a valve flap having a base joined integrally to said diaphragm and an end portion essentially separated by cut-out sections from the main body of the diaphragm, the end portion of said valve flap being displaceable out of the plane of said diaphragm, and restraining means comprising at least one web finger integrally joined both to the end portion of said valve flap and to the main body of the diaphragm bridging said cut-out sections and limiting without preventing displacement of said end portion of the valve flap out of the plane of the diaphragm.

4. For use in a diaphragm-type fuel pump, a diaphragm according to claim 3 wherein the restraining means in at least one of said check valve portions comprises two integral separate web fingers bridging the cut-out sections from opposite sides of the end portion of the valve flap to the main body of the diaphragm.

5. For use in a diaphragm-type fuel pump a diaphragm according to claim 3 wherein the restraining means in at least one of said check valve portions comprises a single integral web finger bridging the cut-out sections from the outermost end of the valve flap to the main body of the diaphragm.

6. A diaphragm-type fuel pump comprising two body members joined together in substantially face-to-face relationship, a substantially fiat flexible diaphragm separating the substantially cojoined faces of said'body members, said diaphragm including a pumping portion which partly defines an actuating chamber in one of said body members and a pumping chamber in the other of said body members, said actuating chamber being adapted to communicate with a source of fluctuating fluid pressure, both of said body members having fuel inlet and outlet passages formed therein communicating with said pumping chamber, said diaphragm also including two separate check valve portions located in the respective fuel passages for maintaining unidirectional flow of fuel through said pump, each of said check valve portions comprising a flat valve flap having a base integral with said diaphragm and an end portion essentially separated by cutout sections from the main body of said diaphragm, the end portion of said valve flap normally being in sealing relation with the fuel passage with which it is associated and being displaceable out of the plane of said diaphragm to permit flow of fuel through its associated fuel passage, and at least one flexible web finger bridging said cut-out sections and joining the end portion of said valve flap to said diaphragm, said web finger limiting without preventing displacement of said end portion of the valve flap out of the plane of the diaphragm.

References Cited in the file of this patent UNITED STATES PATENTS Scholer Apr. 29, 1958 i

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Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182601A (en) * 1962-11-26 1965-05-11 Acf Ind Inc Fuel pump
US3240128A (en) * 1961-12-18 1966-03-15 Itt Flexible diaphragm operated valve structure
US3263701A (en) * 1962-11-26 1966-08-02 Acf Ind Inc Valve structure
US3424063A (en) * 1964-11-19 1969-01-28 Ibm Apparatus using diaphragm - type fluidcontrolled logic devices and method of making same
US3424091A (en) * 1966-10-03 1969-01-28 Tillotson Mfg Co Fuel pump for charge forming apparatus
US3496872A (en) * 1968-05-31 1970-02-24 Trico Products Corp Rotary motor driven pump
US3646701A (en) * 1970-05-04 1972-03-07 Mc Graw Edison Co Portable thermal fogger
US3741687A (en) * 1970-04-15 1973-06-26 E Nystroem Jet-actuated membrane pump
JPS4939005U (en) * 1972-07-08 1974-04-06
US3941519A (en) * 1974-09-12 1976-03-02 Mccauley Herbert J Pump
US3986644A (en) * 1975-05-21 1976-10-19 Diamond International Corporation Dispensing pump
US3995774A (en) * 1975-09-12 1976-12-07 Diamond International Corporation Liquid dispenser having deformable diaphragm type pump
US4181477A (en) * 1978-03-02 1980-01-01 Pace Incorporated Pump valve
US4310107A (en) * 1975-10-29 1982-01-12 The Afa Corporation Manually operated, trigger actuated diaphragm pump dispenser
DE3221725A1 (en) * 1981-06-24 1983-01-13 Cordis Dow Corp blood pump
US4379681A (en) * 1980-01-04 1983-04-12 Paul R. Goudy, Jr. Fluid pump with dual diaphragm check valves
FR2525697A1 (en) * 1982-04-21 1983-10-28 Utilisation Ration Gaz volumetric two-stage pump for liquefied petroleum gases in the liquid phase, and fuel injection process for a motor vehicle engine using such a pump
US4468222A (en) * 1976-05-24 1984-08-28 Valleylab Intravenous liquid pumping system and method
US4479762A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Prepackaged fluid processing module having pump and valve elements operable in response to applied pressures
US4479760A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to applied pressures
US4479761A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to externally applied pressures
US4552178A (en) * 1982-04-07 1985-11-12 Scanpump Ab Variable fluid flow restricting throttle
US4594971A (en) * 1984-10-26 1986-06-17 Outboard Marine Corporation Variable fuel/oil ratio pump for two-stroke internal combustion engine
US4646781A (en) * 1985-05-07 1987-03-03 Pacesetter Infusion, Ltd. Diaphragm valve for medication infusion pump
US5462256A (en) * 1994-05-13 1995-10-31 Abbott Laboratories Push button flow stop useable with a disposable infusion pumping chamber cassette
US5593290A (en) * 1994-12-22 1997-01-14 Eastman Kodak Company Micro dispensing positive displacement pump
US5697770A (en) * 1994-12-23 1997-12-16 Robert Bosch Gmbh Pump using a single diaphragm having preformed oppositely directed bulges forming inlet and outlet valve closing bodies
US5718567A (en) * 1993-09-25 1998-02-17 Forschungszentrum Karlsruhe Gmbh Micro diaphragm pump
US5816779A (en) * 1994-05-13 1998-10-06 Abbott Laboratories Disposable fluid infusion pumping cassette having an interrelated flow control and pressure monitoring arrangement
US20040115068A1 (en) * 2002-09-27 2004-06-17 Steffen Hansen Membrane pump with stretchable pump membrane
US20050016596A1 (en) * 2002-05-03 2005-01-27 Mijers Jan W. M. Unidirectional valve appliance
EP1513211A2 (en) * 2003-09-05 2005-03-09 Samsung Electronics Co., Ltd. Fuel supply device for direct methanol fuel cells
US20050074340A1 (en) * 2003-10-01 2005-04-07 Agency For Science, Technology And Research Micro-pump
WO2005094919A1 (en) 2004-03-30 2005-10-13 Novo Nordisk A/S Actuator system comprising detection means
US20060095014A1 (en) * 2003-05-08 2006-05-04 Novo Nordisk A/S External inserter for transcutaneous device
US20060142698A1 (en) * 2003-05-08 2006-06-29 Novo Nordisk A/S Internal needle inserter
US20060137763A1 (en) * 2004-11-22 2006-06-29 Brendan Hogan Air vent foil cutter
US20070021733A1 (en) * 2003-10-21 2007-01-25 Novo Nordisk A/S Internal fluid connector
US20070049865A1 (en) * 2003-08-01 2007-03-01 Novo Nordisk A/S Retraction means for transcutaneous device
US20070104596A1 (en) * 2004-03-30 2007-05-10 Novo Nordisk A/S Actuator system comprising lever mechanism
US20070163664A1 (en) * 2004-06-17 2007-07-19 Mijers Jan W M Check valve
US20070163599A1 (en) * 2004-06-07 2007-07-19 Mijers Jan W Apparatus for connecting a respiratory device with a patient
US20080167641A1 (en) * 2005-05-13 2008-07-10 Novo Nordisk A/S Medical Device Adapted To Detect Disengagement Of A Transcutaneous Device
US20080215006A1 (en) * 2004-09-22 2008-09-04 Novo Nordisk A/S Medical Device with Transcutaneous Cannula Device
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US20090062778A1 (en) * 2006-03-13 2009-03-05 Novo Nordisk A/S Medical System Comprising Dual-Purpose Communication Means
US20090069868A1 (en) * 2006-03-11 2009-03-12 Henrik Bengtsson Secure Pairing of Electronic Devices using Dual Means of Communication
US20090076451A1 (en) * 2005-01-24 2009-03-19 Nova Nordisk A/S Medical Device with Protected Transcutaneous Device
US20090163874A1 (en) * 2006-04-26 2009-06-25 Novo Nordisk A/S Skin-Mountable Device in Packaging Comprising Coated Seal Member
US20090254041A1 (en) * 2006-06-06 2009-10-08 Krag Christian Roege Assembly Comprising Skin-Mountable Device and Packaging Therefore
US20100063448A1 (en) * 2007-03-06 2010-03-11 Novo Nordisk A/S Pump assembly comprising actuator system
US20110008206A1 (en) * 2007-10-31 2011-01-13 Novo Nordisk A/S Non-Porous Material as Sterilization Barrier
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GB2547944A (en) * 2016-03-04 2017-09-06 Intelligent Energy Ltd Diaphragm pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796838A (en) * 1955-11-30 1957-06-25 Tillotson Mfg Co Fuel feed and charge forming apparatus
US2809589A (en) * 1955-03-11 1957-10-15 Chalmers H Randolph Electro-magnetically operated pump
US2832373A (en) * 1954-01-22 1958-04-29 Gunner L Scholer Liquid treating unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832373A (en) * 1954-01-22 1958-04-29 Gunner L Scholer Liquid treating unit
US2809589A (en) * 1955-03-11 1957-10-15 Chalmers H Randolph Electro-magnetically operated pump
US2796838A (en) * 1955-11-30 1957-06-25 Tillotson Mfg Co Fuel feed and charge forming apparatus

Cited By (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240128A (en) * 1961-12-18 1966-03-15 Itt Flexible diaphragm operated valve structure
US3263701A (en) * 1962-11-26 1966-08-02 Acf Ind Inc Valve structure
US3182601A (en) * 1962-11-26 1965-05-11 Acf Ind Inc Fuel pump
US3424063A (en) * 1964-11-19 1969-01-28 Ibm Apparatus using diaphragm - type fluidcontrolled logic devices and method of making same
US3424091A (en) * 1966-10-03 1969-01-28 Tillotson Mfg Co Fuel pump for charge forming apparatus
US3496872A (en) * 1968-05-31 1970-02-24 Trico Products Corp Rotary motor driven pump
US3741687A (en) * 1970-04-15 1973-06-26 E Nystroem Jet-actuated membrane pump
US3646701A (en) * 1970-05-04 1972-03-07 Mc Graw Edison Co Portable thermal fogger
JPS5141201Y2 (en) * 1972-07-08 1976-10-07
JPS4939005U (en) * 1972-07-08 1974-04-06
US3941519A (en) * 1974-09-12 1976-03-02 Mccauley Herbert J Pump
US3986644A (en) * 1975-05-21 1976-10-19 Diamond International Corporation Dispensing pump
US3995774A (en) * 1975-09-12 1976-12-07 Diamond International Corporation Liquid dispenser having deformable diaphragm type pump
US4310107A (en) * 1975-10-29 1982-01-12 The Afa Corporation Manually operated, trigger actuated diaphragm pump dispenser
US4468222A (en) * 1976-05-24 1984-08-28 Valleylab Intravenous liquid pumping system and method
US4181477A (en) * 1978-03-02 1980-01-01 Pace Incorporated Pump valve
US4379681A (en) * 1980-01-04 1983-04-12 Paul R. Goudy, Jr. Fluid pump with dual diaphragm check valves
DE3221725A1 (en) * 1981-06-24 1983-01-13 Cordis Dow Corp blood pump
US4552178A (en) * 1982-04-07 1985-11-12 Scanpump Ab Variable fluid flow restricting throttle
FR2525697A1 (en) * 1982-04-21 1983-10-28 Utilisation Ration Gaz volumetric two-stage pump for liquefied petroleum gases in the liquid phase, and fuel injection process for a motor vehicle engine using such a pump
US4479760A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to applied pressures
US4479761A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to externally applied pressures
US4479762A (en) * 1982-12-28 1984-10-30 Baxter Travenol Laboratories, Inc. Prepackaged fluid processing module having pump and valve elements operable in response to applied pressures
US4594971A (en) * 1984-10-26 1986-06-17 Outboard Marine Corporation Variable fuel/oil ratio pump for two-stroke internal combustion engine
US4646781A (en) * 1985-05-07 1987-03-03 Pacesetter Infusion, Ltd. Diaphragm valve for medication infusion pump
US5718567A (en) * 1993-09-25 1998-02-17 Forschungszentrum Karlsruhe Gmbh Micro diaphragm pump
US5462256A (en) * 1994-05-13 1995-10-31 Abbott Laboratories Push button flow stop useable with a disposable infusion pumping chamber cassette
US5816779A (en) * 1994-05-13 1998-10-06 Abbott Laboratories Disposable fluid infusion pumping cassette having an interrelated flow control and pressure monitoring arrangement
US5593290A (en) * 1994-12-22 1997-01-14 Eastman Kodak Company Micro dispensing positive displacement pump
US5697770A (en) * 1994-12-23 1997-12-16 Robert Bosch Gmbh Pump using a single diaphragm having preformed oppositely directed bulges forming inlet and outlet valve closing bodies
US6932110B2 (en) * 2002-05-03 2005-08-23 Filtertek Inc. Unidirectional valve appliance
US20050016596A1 (en) * 2002-05-03 2005-01-27 Mijers Jan W. M. Unidirectional valve appliance
US20040115068A1 (en) * 2002-09-27 2004-06-17 Steffen Hansen Membrane pump with stretchable pump membrane
US6948918B2 (en) 2002-09-27 2005-09-27 Novo Nordisk A/S Membrane pump with stretchable pump membrane
US8740851B2 (en) 2003-05-08 2014-06-03 Novo Nordisk A/S Integrated package
US8029469B2 (en) 2003-05-08 2011-10-04 Novo Nordisk A/S External inserter for transcutaneous device
US7981085B2 (en) 2003-05-08 2011-07-19 Novo Nordisk A/S Internal needle inserter
US20060095014A1 (en) * 2003-05-08 2006-05-04 Novo Nordisk A/S External inserter for transcutaneous device
US20110060289A1 (en) * 2003-05-08 2011-03-10 Novo Nordisk A/S Integrated package
US20060142698A1 (en) * 2003-05-08 2006-06-29 Novo Nordisk A/S Internal needle inserter
US20070049865A1 (en) * 2003-08-01 2007-03-01 Novo Nordisk A/S Retraction means for transcutaneous device
US7955297B2 (en) 2003-08-01 2011-06-07 Novo Nordisk A/S Retraction means for transcutaneous device
US7695842B2 (en) 2003-09-05 2010-04-13 Samsung Sdi Co., Ltd. Fuel supply device for direct methanol fuel cells
EP1513211A3 (en) * 2003-09-05 2006-12-27 Samsung SDI Co., Ltd. Fuel supply device for direct methanol fuel cells
EP1513211A2 (en) * 2003-09-05 2005-03-09 Samsung Electronics Co., Ltd. Fuel supply device for direct methanol fuel cells
US7284966B2 (en) * 2003-10-01 2007-10-23 Agency For Science, Technology & Research Micro-pump
US20080063543A1 (en) * 2003-10-01 2008-03-13 Agency For Science Technology And Research Micro-pump
US20050074340A1 (en) * 2003-10-01 2005-04-07 Agency For Science, Technology And Research Micro-pump
US20070021733A1 (en) * 2003-10-21 2007-01-25 Novo Nordisk A/S Internal fluid connector
US7922462B2 (en) 2004-03-30 2011-04-12 Novo Nordisk A/S Actuator system comprising lever mechanism
US20070112301A1 (en) * 2004-03-30 2007-05-17 Novo Nordisk A/S Actuator system comprising detector means
US20070104596A1 (en) * 2004-03-30 2007-05-10 Novo Nordisk A/S Actuator system comprising lever mechanism
WO2005094919A1 (en) 2004-03-30 2005-10-13 Novo Nordisk A/S Actuator system comprising detection means
US20110166524A1 (en) * 2004-03-30 2011-07-07 Novo Nordisk A/S Actuator System Comprising Lever Mechanism
US20070163599A1 (en) * 2004-06-07 2007-07-19 Mijers Jan W Apparatus for connecting a respiratory device with a patient
USRE43886E1 (en) 2004-06-07 2013-01-01 Illinois Tool Works Inc. Apparatus for connecting a respiratory device with a patient
US7717116B2 (en) 2004-06-07 2010-05-18 Filtertek Inc. Apparatus for connecting a respiratory device with a patient
US20070163664A1 (en) * 2004-06-17 2007-07-19 Mijers Jan W M Check valve
US7673653B2 (en) 2004-06-17 2010-03-09 Filtertek Inc. Check valve
US20090012472A1 (en) * 2004-09-22 2009-01-08 Novo Nordisk A/S Medical Device with Cannula Inserter
US20080215006A1 (en) * 2004-09-22 2008-09-04 Novo Nordisk A/S Medical Device with Transcutaneous Cannula Device
US20060137763A1 (en) * 2004-11-22 2006-06-29 Brendan Hogan Air vent foil cutter
US7516765B2 (en) 2004-11-22 2009-04-14 Filtertek Inc. Air vent foil cutter
US20090048563A1 (en) * 2004-12-06 2009-02-19 Novo Nordisk A/S Ventilated Skin Mountable Device
US20090076451A1 (en) * 2005-01-24 2009-03-19 Nova Nordisk A/S Medical Device with Protected Transcutaneous Device
US8167841B2 (en) 2005-01-24 2012-05-01 Novo Nordisk A/S Transcutaneous device assembly
US20080167641A1 (en) * 2005-05-13 2008-07-10 Novo Nordisk A/S Medical Device Adapted To Detect Disengagement Of A Transcutaneous Device
US20090069868A1 (en) * 2006-03-11 2009-03-12 Henrik Bengtsson Secure Pairing of Electronic Devices using Dual Means of Communication
US20090062778A1 (en) * 2006-03-13 2009-03-05 Novo Nordisk A/S Medical System Comprising Dual-Purpose Communication Means
US9173992B2 (en) 2006-03-13 2015-11-03 Novo Nordisk A/S Secure pairing of electronic devices using dual means of communication
US20090163874A1 (en) * 2006-04-26 2009-06-25 Novo Nordisk A/S Skin-Mountable Device in Packaging Comprising Coated Seal Member
US20090254041A1 (en) * 2006-06-06 2009-10-08 Krag Christian Roege Assembly Comprising Skin-Mountable Device and Packaging Therefore
US9399094B2 (en) 2006-06-06 2016-07-26 Novo Nordisk A/S Assembly comprising skin-mountable device and packaging therefore
US20100063448A1 (en) * 2007-03-06 2010-03-11 Novo Nordisk A/S Pump assembly comprising actuator system
US8557179B2 (en) 2007-10-31 2013-10-15 Novo Nordisk A/S Non-porous material as sterilization barrier
US20110008206A1 (en) * 2007-10-31 2011-01-13 Novo Nordisk A/S Non-Porous Material as Sterilization Barrier
GB2547944A (en) * 2016-03-04 2017-09-06 Intelligent Energy Ltd Diaphragm pump

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