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Match
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Document |
Document Title |
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7377756 |
Rapid exhausting mechanism in pump unit
A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air to the air chamber....
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7322803 |
Pumps with diaphragms bonded as bellows
A pump comprises a diaphragm assembly which includes a first diaphragm ( 22 ) having a first diaphragm edge ( 28 ) and a second diaphragm ( 24 ) having a second diaphragm edge ( 30 ). The first...
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7284962 |
Micropump
This invention provides a fluid pump using perforate elements and closure elements which are alternately displace and relates particularly but not exclusively to miniature fluid pumps and pumps...
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7261525 |
Outlet check valve for fluid bladders
A manually operated pump having a pump assembly and a check valve. The pump assembly includes a dome with a fluid inlet. A support plate is sealed to the dome to define a fluid chamber. The support...
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6991213 |
Dual diaphragm valve
A valve for regulating the flow of fluids (gas or liquid) using two flexible diaphragms in which an additional element is added to promote rolling contact between the diaphragms. The valve operates...
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6939618 |
Structural elements
Various application are provided for an enclosure having a first wall and two or more second walls surrounding a cavity. The enclosure also has an inlet and outlet each in fluid communication with...
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6685444 |
Fluid discharging device with a reciprocating pump member defining an outlet valve, and a valve member defining an outlet and suction valve
A fluid discharging device is provided with diaphragm members 20 and 30 . The diaphragm member 30 being a valve member comprises an outlet 35 and a suction passage opening and closing...
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6575715 |
Structural elements forming a pump
Various application are provided for an enclosure having a first wall and two or more second walls surrounding a cavity. The enclosure also has an inlet and outlet each in fluid communication with...
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6179586 |
Dual diaphragm, single chamber mesopump
A diaphragm pump, which is preferably electrostatically actuated, but which may be activated by other forces such as electromagnetic or piezoelectric actuation. The pump is formed by a pump body...
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6168056 |
Device for inflating/deflating the shoulder straps of a means intended to be worn on the back by a person
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6120264 |
Air pump of simple structure
An air pump includes a first sheet, a second sheet, an inflation valve and a check valve. The second sheet is directly connected to the first sheet so as to form a chamber. The inflation valve is...
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6004116 |
Air pump for an inflatable body having a safety holding device
An automatic air pump is built into an inflatable body. The automatic air pump includes a pump body, an air inlet and an air outlet. The pump body is automatically restorable and has an air chamber...
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5934888 |
Aspirator pump
An aspirator pump, especially for medical purposes, has a receptacle with two chambers arranged alongside each other, which are connected with a suction tube, and on each of which an element is...
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5931648 |
Vacuum actuated tubular blood pumping device with active values and application of the same
A blood pump having a rigid chamber with a central opening is connected to a vacuum source such that the vacuum source applies a vacuum on an elastic tubular membrane through the opening in the...
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5704772 |
Controller less resilient bladder pump for reduced diameter casing with long cycle
A conventional vibrator for actuating small diameter pump is tapped at the small volume pressure chamber and communicated to a plugged, elongate hose, thus expanding the actuating pressure chamber...
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5564143 |
Check valve for fluid bladders
A check valve provides a one-way fluid passage from without to within a fluid bladder formed by a pair of plastic sheets sealed together about their periphery. The check valve is formed by a pair...
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5558395 |
Inflatable cushion devices for bicycle seats and other sporting goods
An inflatable air cushion has an integrally formed extension tube of zig-zag form with its free end attached to another cushion or to a pump assembly for inflating the cushion. By separating the...
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5556258 |
Squeezebulb operated sports ball pump
A flexible, highly portable pump is designed for volleyball players but has wider applications. Motive force is delivered from a squeezebulb having a check valve at each end and communicating...
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5527164 |
Positive-displacement pump with inlet float chamber
A fluid valve device for on-off control of fluid flow through a passage extending between two fluid ports (12, 15) and including a valve seat (17A) comprises a hollow valve member (21) which is...
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5518377 |
Vertical metering pump having piston biasing elastomeric gasket
A miniature metering pump of the type possessing a body provided with an inlet opening out into a metering chamber, associated with an inlet valve having a valve member, and with a piston having a...
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5480287 |
Pumping device, particularly for sports shoes, and method for manufacture thereof
Method for manufacturing pumping devices, particularly usable in sports shoes, including the monolithic molding of a body having at least one tubular passage and a first and a second seat for air...
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5378126 |
Diaphragm cassette for solution pumping system
A solution pumping system including a disposable pump cassette is disclosed, with the system configured for efficient and accurate preparation of parenteral admixture solutions. The system includes...
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5372487 |
Inlet check valve for pump mechanism
An intake valve for use in a thermoplastic fluid pump for inflatable bladders in which the valve is composed of superposed elastomeric layers and one of which is energy sealed at the center thereof...
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5324267 |
Slitted pressure cuff check valve
A check valve for disposable pressure infusion systems having an inflation bulb with a single open end includes a valve body with a pair of intake ports and a discharge port. Disposed at such...
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5257978 |
IV safety module
An IV safety module (2) is used with a peristaltic type IV pump (5) to prevent the unrestricted flow of IV fluid through an IV line (4) when the door (80) of the IV pump is open. A locking trigger...
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5145338 |
Low pressure fluid pump
A low pressure air pump includes an outer flexible envelope which encloses an articulate frame. When the envelope is manually compressed against a smooth surface, an intake aperture on the bottom...
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5074765 |
Elastomeric air pump
An air pump formed of a resilient elastomeric material bondable about the perimeter of an opening provided in a plastic inflatable bladder, has a self-supporting spherical dome portion and a...
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4995864 |
Dual chamber pumping apparatus
A dual chamber pumping apparatus and method for infusing fluids to a patient includes a disk having a fluid inlet and a fluid outlet. Resilient membranes are attached to opposite sides of the disk...
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4906229 |
High-frequency transvalvular axisymmetric blood pump
A high-frequency transvalvular blood pump for temporary cardiac assist provides suction to decompress the ventricular cavity during both systole and diastole. The intake end of the pump is...
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4863070 |
Meter pump for liquid and/or low-viscosity substances
A metering pump for discharging metered quantities of liquid and/or low viscosity materials, in particular pasty materials, on bottle-type or can-type containers has a bellows sealed between two...
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4770614 |
Apparatus for transferring fluid medium
An apparatus for transferring a fluid medium comprises a housing (1) having an interior (4) in the top portion (2) thereof communicating through selector valves (5,9) with the atmosphere and with...
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4753578 |
Abrasive fluid pumping apparatus
A pumping apparatus is formed by a flexible, metal wall structure surrounding and defining a hollow interior chamber and with a mechanism to compress and expand the structure to create a pumping...
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4743171 |
Marine installation including fuel/oil mixing device
An apparatus comprising a housing, a wall dividing the housing into high and low pressure chambers having a pressure differential therebetween, the wall including a surface partially defining the...
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4737083 |
Diaphragm pump with an elastic filter disk
A pump having a pump body (1), a push-rod (7), a diaphragm (8) with an aperture (17) and a plate valve (9). The push-rod (7) is driven by a motor (10) and is guided centrally in an elastic filter...
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4730999 |
Negative pressure supply apparatus for automobiles
The vacuum tank is connected to an engine intake manifold, and a vacuum pump generates compulsarily a negative pressure so as to maintain the negative pressure at a predetermined setting pressure...
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4560326 |
Diaphragm type pump device
A diaphragm type pump device comprising a casing having a cover in which an inlet valve is installed, a diaphragm dividing the interior of the casing into a suction chamber and a discharge chamber,...
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4552515 |
Handy tube pump
A tube pump for use in pumping a liquid from one place, such as a tank, to another, such as a vessel, the tube pump comprising a first tube for sucking a liquid from a tank; a second tube for...
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4484865 |
Fluid pump for use down a well
A fluid pump for use down a well, having a pump shell, a flexible bladder, a squeeze plate, two check valves, and a plurality of toggle linkages, and a drive rod. The flexible bladder is positioned...
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4415314 |
Metering pump
A fluid pump for location within a reservoir and which is operable with rise and fall of liquid within the reservoir. The pump comprises a tube of a resiliently deformable material, an abutment...
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4286932 |
Diaphragm pump
A diaphragm pump including an eccentric circular cam or crank shaft, a connecting rod rotatably connected at one end to the eccentric circular cam or crank shaft, a pair of diaphragms each having...
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4273121 |
Medical infusion system
A medical infusion system is described employing a pump for conducting fluid or semi-solids from an upstream portion to a downstream portion of the system. The pump includes upstream and downstream...
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4124334 |
Diaphragm pump
The invention involves an improved design for a diaphragm pump. The inlet and outlet valves for the pump have guided stems that prevent the valves from misaligning and jamming during operation. The...
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4111616 |
Flexible wall pump
A sludge pump which includes successive inlet, work and outlet chambers interconnected by one-way valves. Means is provided to periodically vary the volume of the work chamber thereby to induce...
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4102612 |
Reversible roller pump with longer hose wear
A pump has a flexible hose mounted in a partially circular housing. The hose is traversed by a rotating roller assembly to provide the pumping action. The hose may be formed with pair a of...
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4097203 |
Reciprocating piston pump
A pump having a body including at least two axially aligned pumping chambers each of which contains an actuator having a main central rigid portion and a peripheral sealing ring retained in a...
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4014318 |
Circulatory assist device and system
A circulatory assist device and system are provided for controlling, wholly or partially, the pumping of blood through a blood vessel or vascular prosthesis. The assist device is comprised of an...
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3711226 |
PNEUMATIC PUMP CONSTRUCTION AND METHOD FOR MAKING THE SAME OR THE LIKE
A pneumatic pump construction having an outer peripheral means of a flexible diaphragm interconnected to either an inlet housing or an outlet housing and having an inner peripheral means thereof...
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3670500 |
THERMODYNAMIC POWER SYSTEM AND METHODS
A thermodynamic power system, including in combination a membrane compressor comprising wall means which define an enclosure with a membrane or membranes in the enclosure dividing the same into...
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3507586 |
PUMP
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3502035 |
PISTON PUMP FOR DISPENSING LIQUIDS OR FLUID PASTES
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