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7384248 |
Fuel metering pump
A fuel metering pump provides a compact and reliable fuel delivery system meeting the stringent contamination resistance, accuracy, pressure and flow requirements of jet engine combustion. The...
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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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7331773 |
Pump provided with exhaust valve device and hemodynamometer incorporating the same
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 into the pump...
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7329104 |
Split-housing pipette pump
A diaphragm pump with a bi-component diaphragm pump housing. The housing has a top component and a bottom component that connect along first and second complimenting connection interfaces and form...
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7322801 |
Compact linear air pump and valve package
A compact air pump and valve package includes pump and valve assemblies integral with a pressure housing defining inlet ports and a plurality of fittings for connecting air lines to an interior of...
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7311503 |
Micromachined fluidic device and method for making same
The fluid-flow device ( 100 ) of the invention comprises a stack ( 30 ) covered by a closure wafer ( 20 ), said stack ( 30 ) comprising a support wafer ( 36 ), a layer of insulating material ( 34...
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7293967 |
Pump apparatus
A constant rate discharge pump comprises a rotary shaft which is rotatable together with a rotary driving source, a piston which is displaceable in an axial direction in a pump chamber of a body by...
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7255309 |
Vernier active flow control effector
Methods and apparatus for controlling the attitude of a mobile platform with a resolution suitable for vernier attitude control. In a preferred embodiment, a method includes flowing fluid through...
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7204961 |
Liquid feed apparatus and automatic analyzing apparatus
Provided is a liquid feed apparatus for feeding liquid by operating a diaphragm at a high frequency, in which an inlet valve and an outlet valve are integrally incorporated with a liquid feed...
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7202577 |
Self-cooling actuator
An actuator for an active suspension system includes an armature and a housing enclosing an interior. The interior has a volume that varies in response to movement of the armature. A wall of the...
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7201097 |
Diaphragm pump
The invention relates to a diaphragm pump for pumping aggressive and/or abrasive media, such as slurries, comprising a diaphragm housing mounted in a substantially vertically disposed pipe system,...
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7198474 |
Pump having shape memory actuator and fuel cell system including the same
A pump having a linearly movable shaft, a rotatable hub operably connected to the shaft, and shape memory actuator operably connected to the rotatable hub, and a fuel cell system including the same.
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7195465 |
Reciprocating microfluidic pump system for chemical or biological agents
A miniature pump has at least one controllable expansion-and-contraction chamber, and associated pair of tiny ducts interconnecting a fluid source and destination. The ducts communicate with the...
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7168925 |
Automatic optimizing pump and sensor system
A reciprocating electromagnetic pump comprising a coil wound about a bipolar or tripolar core, a diaphragm structure mechanically coupled to at least one arm with a magnet attached to one end of...
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7134849 |
Molded disposable pneumatic pump
A mechanical pump having a unitary construction such that the fluid being pumped is prevented from leaking without requiring the use of discrete seal elements. The absence of discrete seal elements...
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7121808 |
High frequency air pulse generator
An improved air pulse generator produces high frequency chest wall oscillations (HFCWO) and includes means for internal heat dissipation. Internal heat generated by an internal diaphragm motor is...
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7111675 |
Remote closed system hydraulic actuator system
A hydraulic actuator system includes a power source, a controller in communication with the power source, a piezoelectric stack comprising a plurality of piezoelectric elements disposed within a...
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7104767 |
Diaphragm pump for medical applications
An implantable diaphragm pump for use in medical applications comprising a housing having a pump cap, a valve plate, a diaphragm, and a base plate, wherein the pump cap and the valve plate are...
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7070400 |
Diaphragm pump with eliminated pump chamber dead space, and circular recesses on the reverse side of the diaphragm for improved diaphragm chamber wall adherence
The diaphragm suction pump has a pump chamber ( 7 ) located in a base plate ( 6 ), the wall of said chamber extending in a conical manner from a central flat base section ( 7 ′) to the lateral...
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7066086 |
Stencil printer
In a stencil printer, a diaphragm pump is used as an ink supply pump.
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7063268 |
Electro-active fluid cooling system
Embodiments of the invention provide one or more valves in which an electroactive material acts to open or close the valves to increase efficiency of a pump, which may be a pump that uses an...
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7040876 |
Valves for a diaphragm pump
A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion...
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7033148 |
Electromagnetic pump
An electromagnetic micropump for pumping small volumes of liquids and gases comprises a magnetic actuator assembly, a flexible membrane and a housing defining a chamber and a plurality of valves....
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7013793 |
Diaphragm mounting method for a diaphragm pump
A diaphragm pump and method for making same, the pump having a diaphragm coupled to a wobble plate achieved using: a post ( 11 ) protruding from the wobble plate toward the diaphragm and at least...
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7011507 |
Positive displacement pump with a combined inertance value of the inlet flow path smaller than that of the outlet flow path
A pump according to the present invention has a circular diaphragm 4 placed at the bottom of a casing 2 . At the bottom of the diaphragm 4 , a piezoelectric element 6 is installed in contact...
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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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6968815 |
Actuating device for securing a camshaft of an engine of a motor vehicle in a start position
An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster...
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6948914 |
Metering pump with an electric motor
The metering pump comprises a synchronous motor which is stepped down via a mechanical gear and the rotation movement of the motor is converted into a stroke movement which drives the membrane...
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6942469 |
Solenoid cassette pump with servo controlled volume detection
Servo controlled solenoids provide actuation of a pump piston and valves, and electronic LC resonance measurements to determine liquid volume and gas bubble volume. Third order nonlinear servo...
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6889567 |
3D array integrated cells for the sampling and detection of air bound chemical and biological species
An integrated mesopump-sensor suitable for disposition in two- and three-dimensional arrays having small dimensions is disclosed. One mesopump is formed of an electrostatically attractable flexible...
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6884045 |
Hydraulically powered diaphragm pump with pretensioned diaphragm
A hydraulically driven diaphragm pump with a diaphragm clamped at its edge between a pump body and a pump cover separating a delivery chamber from a hydraulic chamber and pretensioned in the...
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6883337 |
Thermal management device
An actively cooled system includes a heat generating device and at least one heat transfer device. The heat transfer device includes a refrigerant loop including a compressor for providing a...
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6863508 |
Measuring gas pump with heated and insulated pump head
A pump for gases to be measured having a pump housing in which a pump chamber is located. The pump chamber is sealed off by a working membrane that is connected to a crank drive by a connecting rod...
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6857392 |
Aquarium pumping and airing apparatus
An aquarium includes a pump disposed in a chamber of a container to circulate water and having a spindle. An air supplying device is coupled to the spindle of the pump and driven by the spindle of...
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6843643 |
Valve mounting arrangement in a diaphragm pump
A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion...
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6827559 |
Piezoelectric micropump with diaphragm and valves
A micropump comprising a pump body including a fluid inlet channel, a fluid outlet channel and pumping reservoir, the fluid inlet channel and the fluid outlet channel communicating with the pumping...
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6773236 |
Internally pressurized diaphragm positive displacement pump
This disclosure relates to a highly durable positive displacement pump capable of dry-priming and pumping of a liquid containing abrasive non-soluble material. The pump assembly comprises an...
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6767190 |
Methods of operating an electrostatically actuated pump
Methods and apparatus for electrostatically pumping fluids without passing the fluids through the electric field of the pump are contemplated. Electrostatic forces are preferably used to move the...
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6765325 |
Alternating current electric motor
The invention concerns an AC electric motor ( 1 ) comprising a stator magnetic circuit including a first part ( 2 ) whereon are mounted electrical windings ( 7 and 8 ) and a second recessed part...
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6764287 |
Pump provided with diaphragms
A casing body is formed with a vent hole. The casing body has an inner face formed with a plurality of grooves respectively communicated with the vent hole. A plurality of diaphragms are...
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6758657 |
Electromagnetically driven diaphragm pump
A pump ( 10 ) has a housing which forms a pump chamber ( 17 ) having a wall ( 18 ). Inlet and outlet valve assemblies ( 19, 20 ) communicate with the chamber ( 17 ) and, respectively, allow fluid...
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6742993 |
Method and apparatus for dispensing fluids
A method and system for dispensing a precise amount of a chemical used in the fabrication of semiconductors utilizes rolling membrane pump and calculates an amount by which to change a dispense...
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6729856 |
Electrostatically actuated pump with elastic restoring forces
An apparatus for electrostatically pumping fluids without passing the fluids through the electric field of the pump is contemplated. Electrostatic forces are preferably used to move the diaphragms...
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6695594 |
Vibratory pump improvement
A vibratory pump has a frame, a solenoid located in the frame, a moving transmission including a transmission member, a pumping set cooperating including an oscillating cover, an auxiliary pumping...
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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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6685442 |
Actuator device utilizing a conductive polymer gel
A valve actuator based on a conductive polymer gel is disclosed. A nonconductive housing is provided having two separate chambers separated by a porous frit. The conductive polymer is held in one...
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6655923 |
Micromechanic pump
A micromechanical pump has a membrane ( 2 ) positioned above a substrate ( 1 ). The substrate is provided with a cavity ( 8 ) which is formed in an endlessly continuous shape (e.g., circular) to...
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6655257 |
Diaphragm pump
A diaphragm pump with a diaphragm ( 1 ) of elastic material, which includes a receiving cavity ( 4 ) in a reinforced central area ( 3 ) for a connecting rod head ( 5 ) of a connecting rod which...
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6623256 |
Pump with inertance value of the entrance passage being smaller than an inertance value of the exit passage
Since many valves are used, pressure loss is large, resulting in low reliability of a pump. Even when the period of increasing and decreasing the volume of a pump chamber is long, and a...
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6616413 |
Automatic optimizing pump and sensor system
A reciprocating electromagnetic pump comprising a coil wound about a bipolar or tripolar core, a diaphragm structure mechanically coupled to at least one arm with a magnet attached to one end of...
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