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8176735 |
Control device for multi-stage turbochargers
A control device for multi-stage turbochargers is provided that is capable of improving fuel consumption in transient and stationary states of an engine equipped with multi-stage turbochargers. A...
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8162619 |
Method for controlling the discharge pressure of an engine-driven pump
A system for controlling the pressure output of an engine-driven centrifugal fire pump includes a discharge pressure sensor mounted in the discharge line of the pump. A governor varies the rpms of...
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8069950 |
Environmental compressor protection assembly
A device that relieves lubricant pressure in a divider block lubrication system into a fluid reservoir, a container, or directly back into the compressor frame to which the tubing is connected....
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8025555 |
System for measuring and controlling the level of vacuum applied to a conditioning holder within a CMP system
A method and apparatus for conditioning polishing pads that utilizes an apertured conditioning disk for introducing operation-specific slurries, without the need for additional tooling, platens,...
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7871248 |
Airframe mounted electric motor driven lubrication pump control deoil system
A system for controlling lubricant displacement from a machine during turbomachine shutdown sequence includes a motor, a pump, a control valve, and a motor control unit. The motor is selectively...
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7814922 |
Apparatus for controlling the pressure in a process chamber and method of operating same
A method of operating apparatus for controlling the pressure in a process chamber (10), the apparatus comprising a first pump unit (14) having an inlet in fluid connection with an outlet of said...
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7611332 |
Device and method for controlling a thick matter pump
A device and a method for controlling a two-cylinder thick matter pump to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe switch includes...
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7337920 |
Fluid dispensing apparatus
A concentrated flavour dispensing machine having displacement pumps for delivering between a few millilitres and few ounces of fluids having a viscosity value between 1 to 4000 centepoise is...
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7118348 |
Compressed air system and method of control
A compressed air system, wherein a decision to de-energize a compressor motor is made with consideration of the likely need for the operation of the compressor at a future point in time. A rate of...
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6626643 |
Twin vane pump apparatus for dispensing meat products
An apparatus and method for producing predetermined quantities of a meat product, inc which the apparatus comprises a twin vane concentric pump with an inlet and an outlet circumferentially spaced...
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6599093 |
Compressor having speed and intake regulation valve control
A compressor that enables the increase of compression efficiency, the prevention of abnormal temperature rising in the discharge, and the reduction of power loss, includes a compressor body 11, an...
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6558126 |
Compressor utilizing low volt power tapped from high volt power
Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that...
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6517329 |
Electromagnetic blower and two-passage air supply apparatus
Provided is a low-noise, long-life electromagnetic blower that has a simple, low-priced configuration and can realize two different outputs, high and low. When the electromagnetic blower is...
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6328690 |
Air feeding device for endoscope
An air feeding device for endoscope system includes an air compressor that compresses air and feeds the air in a sealed space, and a pressure sensor that detects air pressure in the sealed space....
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6257833 |
Redundant, dedicated variable speed drive system
A redundant, modular pump system includes a plurality of substantially identical pump modules. Each module includes constant speed drive circuitry, variable speed drive circuitry and a pump....
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6155790 |
Method and equipment for controlling a pipe network
A method and equipment for controlling a pipe network comprising piping (1), a pump (2) and at least two control valves (3), whereby the valve position and the flow through the valve are monitored,...
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6146100 |
Compressor unit and control device used thereby
In the inlet pipe (7) of the compressor element (1) is provided a pneumatically controlled throttle valve (9), whereas the motor (3) of the compressor element (1) has a pneumatically controlled...
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6099264 |
Pump controller
In accordance with the present invention, there is provided an in-line fluid pump controller for activating and de-activating a fluid pump which is configured to pump fluid through a fluid line....
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6050779 |
Conveying apparatus using unstable electric power supply
A conveying system comprising a pump whose power source is an unstable electric power supply, such as a solar cell; a first supply pipe for conveying liquid from an intake to the pump; a second...
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5795328 |
Vacuum system and a method of operating a vacuum system
A vacuum system and a method of operating a vacuum system. The system comprises a vacuum line, a pump, a pump motor, a pressure adjusting assembly, a pressure sensor and a control means. The pump...
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5697763 |
Tank mounted rotary compressor
A rotary compressor having a drive motor and a single pressure vessel, wherein the pressure vessel acts both as a gas oil separator and as a compressed gas storage tank. The compressor employs a...
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5630706 |
Multichannel pump apparatus with microflow rate capability
A multichannel pump system for HPLC and other uses has a plurality of fluid pumps whose input is fed separately to at least one high pressure mixing unit downstream of the pumps and any associated...
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5586574 |
Air system control
Control system for maintaining selected pressure in a gas distribution system including a header and multiple takeoffs from the header including a compressor to supply gas to the header at selected...
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5415528 |
Solution pumping for maximizing output while minimizing uneven pumping pressures
A solution pumping system is disclosed which is embodied as a disposable pump cassette including a self-contained positive displacement pump, and an associated pump driver including a reciprocable...
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5351705 |
Method and apparatus for controlling fluid pumps and valves to regulate fluid pressure and to eliminate fluid flow surges
A method and apparatus for supplying and delivering fluids at a constant pressure includes means for measuring fluid pressure, means for measuring fluid flow and means for actuating fluid valves to...
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5284423 |
Computer controlled positive displacement pump for physiological flow simulation
A positive displacement pump includes a reservoir for storing fluid, a cylinder for receiving and discharging the fluid and a piston within the cylinder for forcing the fluid into and out of the...
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5168893 |
Block and bleed valve
A valve for use with a first working fluid conduit and a second working fluid conduit, the valve includes a valve body with a valve bore formed therein. A piston is slidably disposed within the...
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5167491 |
High to low side bypass to prevent reverse rotation
Rotary compressors such as screw compressors and scroll compressors are capable of reverse operation at shutdown as the system pressure seeks to equalize through the running gear. The present...
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5165502 |
One-main pipe type centralized lubrication apparatus
A one-main pipe type centralized lubrication apparatus having a pump device, one main oil feed pipe and a plurality of distributors, wherein the pump device is provided with a depressurization...
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5160244 |
Pump system operable by variable-speed control
A variable-speed pump system comprising: a hydraulic machine having a flow adjusting means and including at least a pumping function; a rotary machine operatively connected to the hydraulic machine...
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5118259 |
System for controlling oil viscosity
A system for and a method of establishing and maintaining fluid at desired viscosity and temperature levels in a flow system. The system includes a driven pump that circulates fluid from a fluid...
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5047012 |
Motorized syringe with multiple port manifold
Apparatus for introducing fluids into, and withdrawing fluids from, a hollow organ of the body, in particular a galibladder, for conducting litholysis, comprises a piston-type injection device...
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4998862 |
Air compressor pressure regulating valve system
An air compressor pressure regulating system which controls the operation of an air compressor. A variable speed driver, which is controlled by a throttle, controls the speed of the driver. A...
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4969801 |
Method and apparatus for shutting off a compressor when it rotates in reverse direction
A fluid compression system includes a fluid compression device which pressurizes fluid. A pressure sensor senses pressure generated by the compression device. A control device indicates operating...
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4968218 |
Method of controlling the air output of a screw compressor
A method of controlling the air output of a screw compressor, wherein the average air output of the compressor during operation is adapted to air consumption by throttling the flow of suction air...
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4863355 |
Air compressor having control means to select a continuous or intermittent operation mode
An air compressor is controlled such that when the pressure inside a tank for storing compressed air reaches a predetermined lower-limit value, the compressor is brought into a load running state...
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4840542 |
Infusion pump with direct pressure sensing
An infusion pump incorporates a cassette formed by bonding of two substantially flat sheets. The fluid to be infused to the patient comes into contact only with the cassette. The cassette includes...
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4822647 |
Coating agent to coating robot, including a method and arrangement for protecting the apparatus from damage due to improper pressures in a supply line
A supply line for supplying a sealant from a sealant supply source to a sealing robot has pressure sensors and is coupled to relief valves through branch lines. If the pressure in the supply line...
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4784580 |
Airflow control system
An airflow control system generates a compensating output which is combined with the normal damper control output in a damper operating device when a pole change motor driving a blower changes...
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4720245 |
Flow rate control system in fluid supply and drain apparatus
The present invention relates to a flow rate control system in an apparatus for supplying and draining fluid such as air and water, etc. and particularly in a fluid suply and drain apparatus...
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4664143 |
External water tower
A water supply recirculation system is provided having a recirculation pump and a duct into which the recirculation pump propels water. A selectively operated, closed at rest, flow valve is...
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4664601 |
Operation control system of rotary displacement type vacuum pump
An operation control system of a rotary displacement type vacuum pump capable of reducing a starting torque of the vacuum pump includes a suction regulating valve and a pressure sensor for...
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4560323 |
Apparatus for controlling the flow of a fluid
An apparatus for controlling flow of a fluid having two speed-controlled positive displacement devices for supplying a load with fluid under pressure from a supply at a different pressure with...
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4546791 |
Safety valve
An improved safety valve for a feeding water machine, comprising a first casing having an inlet and an outlet, a spring-loaded sliding member slidably mounted into the first casing, a spring-loaded...
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4401412 |
Heavy duty electric pump control unit
For use in connection with an electrically driven pump and check valve combination as used in municipal water and sewage plants wherein the check valve prevents the reverse flow of water from the...
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4344741 |
Automatic water supply system
A water supplying system has a pneumatic tank storing water and confining compressed air therein. The pneumatic tank is adapted to be charged with water by a pump. The supply of compressed air into...
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4315716 |
Suction control valve
A suction control valve adapted to be connected to the suction side of a compressor and comprising a valve housing, in which a valve seat is formed, which co-operates with a valve body which, in...
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4264282 |
Air compressor apparatus including noise-reducing means
An air compressor apparatus including noise-reducing means for converting ambient air into compressed air includes an air compressor surrounded by a noise-reducing enclosure and a plurality of...
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4232997 |
Method and apparatus for controlling compressors
A method and apparatus for controlling a compressor is disclosed wherein both the compressed air output and the speed of the compressor are simultaneously adjusted in relation to compressed air...
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4225288 |
Pump set comprising a liquid ring vacuum pump preceeded by a compressor
A pump set comprising a compressor followed by a liquid ring vacuum pump with the two pumps matched to each other so that a relatively small liquid ring vacuum pump can draw and maintain vacuum...
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