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7600985 |
Pump assembly, suppression apparatus for use with a pump, and method of controlling a pump assembly
A pump assembly comprising an apparatus for reducing process noise manifest in a piping system. The invention introduces a pump pulse to counteract a negative dip in pressure when the reciprocating...
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7566205 |
Reciprocating pump and check valve
In a reciprocating pump, drive power of a drive-power supply member is transmitted to a diaphragm within a diaphragm drive chamber via operating fluid. An operating-fluid-flow regulation chamber...
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7527483 |
Expansible chamber pneumatic system
An expansible chamber pneumatic system, for example a fluid pump system, includes two or more double-acting diaphragm pumps, each with symmetrical left and right pump housings, each housing...
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7517199 |
Control system for an air operated diaphragm pump
The present invention includes methods and apparatuses for operating and controlling AOD pumps.
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7497670 |
Dual diaphragm transfer pump
A reciprocating fluid transfer pump in which a pilot valve assembly block can be mounted to a main body block in a simple, easy and reliable manner. In the reciprocating fluid transfer pump, a...
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7431573 |
Device for generating a reducing agent/air mixture
The apparatus for generating a mixture of reducing agent and air has a pumping agent feed pump having a pump housing and a mixing chamber into which reducing agent and air pumped by the feed pump...
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7425120 |
Diaphragm position control for hydraulically driven pumps
A hydraulically driven pump includes a diaphragm, a piston, a transfer chamber, a fluid reservoir, and a spool member. The transfer chamber is defined between the diaphragm and piston and is filled...
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7399168 |
Air driven diaphragm pump
An air driven diaphragm pump includes two diaphragms affixed to a common shaft. The shaft extends through an air valve providing reciprocating pressurized air to the diaphragms through associated...
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7367785 |
Reduced icing valves and gas-driven motor and reciprocating pump incorporating same
A valve for a gas-driven motor and a valve assembly and reciprocating pump incorporating the valve are provided. The valve includes a shiftable valve for alternatively supplying a motive gas...
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7323961 |
Electromagnetic machine with a deformable membrane
An electromagnetic machine with a deformable membrane ( 1 ) includes at least one fixed part which can direct a magnetic flow interacting with at least one moveable part ( 12 ) having regions which...
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7287964 |
Method and system for pumping powder, and powder coating apparatus
In a pump system for supplying powder, in particular coating powder, to a powder coating apparatus, time controller is used to introduce compressed gas into a metering chamber as a function of the...
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7284966 |
Micro-pump
A micro-pump having a first layer, a second layer and an intermediate flexible layer is disclosed. The first layer and second layer may be of moldable plastics. The intermediate layer may be a...
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7252148 |
Plunger actuated pumping system
Methods and apparatus for pumping fluids from a well utilizing a submersible pumping system. In one embodiment, the pump comprises a pump body operable to be disposed within tubing within a well....
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7232524 |
Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas drive
Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the...
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7168928 |
Air driven hydraulic pump
An air driven hydraulic pump includes two opposed cylinders to either side of a center section. Two pneumatic pistons are slidable in the opposed cylinders and are coupled with one another by a...
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7134489 |
System for controlling the discharge of drilling fluid
A drilling system is provided for drilling a borehole into an earth formation, the drilling system comprising pump means for pumping drilling fluid into the borehole and discharge means for...
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7125229 |
Reciprocating air distribution system
A reciprocating air distribution system includes a valve housing, having a cylinder therein. A valve element is slidably mounted within the cylinder. Also provided is an inlet to the cylinder, an...
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7097569 |
Restorable sand or pellet pile device
A restorable sand or pellet pile is provided for use as an amusement or exercise device. A sand or pellet collection chamber has inclined side walls that converge toward each other in a downward...
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7090474 |
Diaphragm pump with overfill limiter
A diaphragm pump which overcomes the problem of diaphragm failure due to overfill of the oil transfer chamber. An overfill preventive element in the form of a mechanical stop, a fully closed coil...
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7063517 |
Valve apparatus and pneumatically driven diaphragm pump incorporating same
A valve apparatus and pneumatically driven diaphragm pump incorporating same having a valve body having a longitudinal axis and an actuator having an axis with a first end and a second end. The...
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7063516 |
One-way valve
A double diaphragm pump including an air manifold, two air chambers to either side of the air manifold, two pump chambers to either side of the air chambers and diaphragms extending between the air...
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7029245 |
Blood pumping unit, with a coplanar disk inlet valve and an annular outlet valve
A unit for pumping fluid, particularly blood, is provided with an enclosure that has two half-shells and an elastic membrane fixed perimetrically to the enclosure in order to divide its space into...
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7025578 |
Pump having air valve with integral pilot
A pump comprising a valve housing and a spool slidably positioned within the valve housing. The spool has a supply face, a first end face, and a second end face, and is slidable between a first...
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7004731 |
Diaphragm pump having a gas venting surface
A scarred surface structure on the cover curvature of a diaphragm compressor is created by shot blasting. The scarred surface structure hinders the sealing effect between the cover curvature and...
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7004727 |
Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use
Blood component processing systems and methods are coupled to a blood component processing device. The systems and methods include a fluid circuit that comprises at least one fluid pressure...
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6973922 |
Fuel supply control system for engine
A composite control valve is constructed by a valve housing, first and second diaphragms mounted to the valve housing and disposed to be opposed to each other, a negative pressure working chamber...
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6971859 |
Diaphragm unit
A diaphragm unit includes a diaphragm and a diaphragm case. The diaphragm has a center point and an outer peripheral portion. The diaphragm case includes a fixing surface and a regulating surface....
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6962487 |
Fluid driven pump with improved exhaust port arrangement
A fluid driven pump. One embodiment of the fluid driven pump may include first and second diaphragms supported within a housing assembly such that first and second fluidtight expansion chambers are...
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6957952 |
Fiber optic system for detecting pump cycles
A fiber optic system for detecting a stroke of a pump, the fiber optic system including a first fiber optic line configured for directing light onto a portion of the pump that moves during the...
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6948918 |
Membrane pump with stretchable pump membrane
The invention relates to membrane pumps for delivering liquids. More specifically, a pump is provided having a pump housing with a pump cavity formed between first and second wall portions thereof,...
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6905314 |
Pump having flexible liner and compounding apparatus having such a pump
A pump has a flexible liner which is expanded and contracted by application of positive and negative fluid pressure for receiving and discharging fluent material. The liner is received in a rigid...
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6901960 |
Double diaphragm pump including spool valve air motor
A double diaphragm pump including a pump housing, first and second pump diaphragms, an inlet manifold, an outlet manifold, and an air motor. The air motor includes a spool valve having a valve...
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6899530 |
Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinder
A diaphragm pump which overcomes the problem of diaphragm failure due to overfill of the oil transfer chamber and the inability to self-prime. A notch is provided in the upper portion of the...
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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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6874997 |
Pump system using a control fluid to drive a switching valve mechanism for an actuating fluid
There is provided a pump system excellent in a maintenance ability and compatibility. The pump system comprises a pump ( 1 ) for transferring a liquid by alternately supplying air to air chambers (...
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6846166 |
Reciprocating diaphragm pump with degassing valves
In a reciprocating pump, drive power of a drive-power supply member is transmitted to a diaphragm within a diaphragm drive chamber via operating fluid. An operating-fluid-flow regulation chamber...
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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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6790014 |
Fluid cooled diaphragms for diaphragm compressors
Fluid cooled diaphragms for diaphragm compressors are provided which utilize a multi-layer diaphragm with an upper or gas contacting later, and a bottom or lower layer, which has cooling grooves...
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6767189 |
Method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors
A method for the control and regulation of the oil pressure-gas pressure relationship of diaphragm compressors. The function of a diaphragm compressor is mainly dependent on a given minimum...
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6752599 |
Apparatus for photoresist delivery
A controller for a photoresist dispense pump is described that actively monitors the operation of the pump and dynamically determines completion of the refill of the pump. In one embodiment,...
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6749403 |
Methods for controlling a pump's flow rate by pulsed discharge
Methods and systems are disclosed for pumping fluids at desired average flow rates by applying a predetermined force to a pump chamber and pulsing an outlet valve of the pump chamber to deliver a...
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6745754 |
Engine having oil fill tube with integrated fuel pump
An internal combustion engine having an engine housing containing an oil sump in communication with an oil fill conduit, and a fuel pump including a pump assembly having at least a portion thereof...
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6742997 |
Diaphragm-type pumping apparatus
A diaphragm-type pumping apparatus ( 1 ) includes a pair of diaphragms ( 12 ), each defining a fluid delivering chamber ( 14 ) and a working fluid chamber ( 15 ), a main body section ( 2 )...
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6699021 |
Passively pumped liquid feed fuel cell system
A direct methanol fuel cell (DMFC) system is provided with a pump for pumping methanol into the cell. The pump is driven by carbon dioxide produced by the electro-chemical reaction at the anode of...
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6695593 |
Fiber optics systems for high purity pump diagnostics
A pump for ultra-pure fluids comprises a flexible diaphragm separating a fluid chamber from an air chamber. The diaphragm creates an airtight seal between the fluid chamber and the air chamber. Any...
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6685443 |
Pneumatic reciprocating pump
A pneumatically-actuated reciprocating fluid pump and shuttle valve combination operates in an “air-assist” mode and a “non-air-assist” mode. In the non-air-assist mode, the shuttle valve...
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6672841 |
Pumping and metering device
The present invention relates to a pumping device for delivering and metering fluids, in particular medical fluids such as dialysis fluids, with a piston unit having a driving device and a piston...
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6644941 |
Apparatus and method for reducing ice formation in gas-driven motors
A method for reducing ice formation in a gas-driven motor and a reduced-icing, gas-driven motor are provided, the motor having a housing with a first pressure chamber and a second pressure chamber....
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6619932 |
Restarting device of a pump change-over valve which induces a pressure difference within the pump change-over valve to remove the latter from an intermediate stalled position
A restarting device of a pump change-over valve in a pump is provided, in which the pump includes; a pump main body 1 and a change-over valve 2 . The change-over valve 2 is provided with a...
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6612818 |
Bellows type pump or accumulator
It is an object of the invention to, even in the case where liquid containing a sedimenting material such as slurry is used, prevent sedimenting and aggregation from occurring in a pump. As means...
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