|
Match
|
Document |
Document Title |
|
|
7290991 |
Dual oil supply pump
An automotive engine oil pump assembly having first and second pump mechanisms contained within a common housing. A shaft rotatably supported in the housing drives the pump mechanisms in a...
|
|
|
7118336 |
Pressurized oil supply for propeller engine system
A system and method for providing pressurised oil during non-feathered in-flight shutdown conditions in a variable-pitch aircraft propeller engine. A secondary pump provides pressurised oil...
|
|
|
7090473 |
Multiple stage pump with multiple external control valves
A multiple stage pump having valves downstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure...
|
|
|
7090475 |
Hydraulic control circuit for a hydraulic engine with at least two speeds
A hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side being...
|
|
|
7073329 |
Multi-stage oil pumping station
In a multistage oil pumping system for an oil supply system of a motor vehicle comprising at least two oil pumps arrange axially in side-by-side relationship, each of the oil pumps is connected to...
|
|
|
7048517 |
Pump as a pressure source for supercritical fluid chromatography
The invention is a device and method in a high-pressure chromatography system, such as a supercritical fluid chromatography (SFC) system, that uses a pump as a pressure source for precision pumping...
|
|
|
6932583 |
Multiple stage pump with multiple external control valves
A multiple stage pump having valves downstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure...
|
|
|
6869274 |
Method of reducing pressure peaks in a fuel injector
A multiple stage pump having valves upstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure...
|
|
|
6755620 |
Independent rotational speed control of multi-stage variable speed compressor
A multi-stage variable speed compressor includes a pressure detector provided for each compressor on and after the second stage for detecting a discharge pressure of a compressor of a stage...
|
|
|
6752600 |
Fluid system
A fluid system for plural motor driven pumps is disclosed. The fluid system includes a hydraulic motor, a fluid reservoir, and a plurality of fixed displacement pumps. A control valve selectively...
|
|
|
6663350 |
Self generating lift cryogenic pump for mobile LNG fuel supply system
A high pressure pump and delivery system mating to LNG storage and suited for natural gas powered trucks and buses, but also suitable for other cryogenic liquid fuels. The reciprocating pump is...
|
|
|
6652240 |
Method and control system for controlling multiple throttled inlet rotary screw compressors
A more efficient compressor control system and a more efficient method of operating a multiple throttled inlet rotary screw compressor system includes the method and control system which are a...
|
|
|
6638031 |
Heating system for motor vehicles including multi-function pump with axially displaceable impeller
The invention relates to a heating system, particularly for motor vehicles, in which a heat exchange arrangement operating in the manner of a heating member can be thermally coupled by means of a...
|
|
|
6602057 |
Management and optimization of load sharing between multiple compressor trains for controlling a main process gas variable
A control system is provided for load sharing between a plurality of compressors. The control system determines the actual coefficients of export flow for the compressors, compares the actual...
|
|
|
6592191 |
Pump equipment and method for assembling same
In a pump equipment having one or more rotary pumps for hydraulic circuit, the intake port is communicated with the shaft hole for inserting the drive shaft and fluid flows through the shaft hole...
|
|
|
6579070 |
Pump assembly comprising two hydraulic pumps
A pump assembly which comprises a vane pump and a second hydraulic pump driven together with this vane pump. The vane pump has a suction region in which first pressure spaces between the vanes and...
|
|
|
6575709 |
Pumps
A pump system is provided where low pressure ( 4 ) and high pressure ( 6 ) pumps are coaxially mounted to receive motive power from a shared drive ( 300 ). The drive shafts are arranged such that...
|
|
|
6516249 |
Fluid control system with autonomously controlled pump
A plurality of autonomously controlled valves and pumps in a fluid distribution system are interconnected by a data communication network. The system also includes fluid flow sensors which report...
|
|
|
6499504 |
Control system for controlling multiple compressors
The present invention is a more efficient compressor control system and a more efficient method of operating a multiple compressor system because the method and control system are a function of...
|
|
|
6471486 |
Compressor system and method and control for same
An electronic control system is disclosed to control and to prevent damage to a standalone or a network of oil free, two stage compressor packages. The electronic control system uses pressure and...
|
|
|
6447262 |
Pumping system for a multi-stage pump
A pumping system for selectively activating the stages of a multi-stage centrifugal pump is provided. The pumping system has a first stage impeller for receiving fluid into the system and imparting...
|
|
|
6361287 |
Fluid pumping system for automatic transmission
A fluid pumping system for an automatic transmission includes a primary pump operable to draw fluid from a sump to a main delivery line to a main hydraulic circuit of the transmission. A main...
|
|
|
6341947 |
Pump device wherein detection of failure of one of pumps causes a change in the manner of control of the pump or pumps to compensate for the failure
A pump device including a plurality of pumps having respective different operating characteristics, and a pump control device for controlling the plurality of pumps, wherein the pump control device...
|
|
|
6302654 |
Compressor with control and protection system
A compressor protection and control subsystem for a rotary compressor provides temperature pressure, mis-wiring and vibrational protection for the scroll machine. The vibrational protection...
|
|
|
6264435 |
Regulation of fluid conditioning stations
They are characterized in that, when the pressure at the measurement point reaches or exceeds the start-up pressure value and/or when the flow provided by the pumping devices is lower than the...
|
|
|
6250894 |
Load sharing valve and system for operating centrifugal pumps in parallel
A system allows pumps to run in parallel and preventing back flow through a non-operational pump. The system includes a first pump in parallel with a second pump. The system further includes a...
|
|
|
6240949 |
Three-way diverter valve
A three-way valve is configured as a solenoid operated diverter when the solenoid is used in parallel with a poppet valve. When the diverter is in a first mode, hydraulic fluid entering a first...
|
|
|
6186750 |
Oil pump control valve spool with pilot pressure relief valve
A valve spool (70) for an oil pump assembly (10) that includes a pilot pressure relief valve (80) to provide pilot pressure relief that increases the stability of the pump assembly (10) and...
|
|
|
6183207 |
Digital pump
A pump which can operate in a number of different modes, wherein each mode corresponds to a different output of the pump. The pump may have a plurality of pump chambers located within a pump...
|
|
|
6142744 |
Pumping system and method for multiple liquids
A pumping system and method according to which a plurality of housings are connected together, with each having an inlet and an outlet for respectively receiving and discharging the liquid to be...
|
|
|
6142747 |
Fuel pump assembly
The invention relates to a fuel pump assembly having a low-pressure region (ND) with at least one low-pressure pump-and a high-pressure region (HD) with at least one regulated-quantity...
|
|
|
6135724 |
Method and apparatus for metering multiple injection pump flow
A system is provided for closed-loop control of a plurality of metering pumps driven by a single source of pressurized fluid. Feedback signals are generated that are proportional to output flow...
|
|
|
6056510 |
Multistage vacuum pump unit
A multistage vacuum pump unit having a plurality of separate single-stage pumps connected in series with each other by exhaust pipes, the exhaust pipes each connecting a suction port of one of the...
|
|
|
6056516 |
Compressor installation having a control valve arrangement for independently switching compression chambers between delivery partial delivery and idle operation
An installation for the production of pressure has three operating states corresponding to a delivery operation, an idle operation, and a partial delivery operation. The installation contains at...
|
|
|
6033192 |
Fluid transfer system
This invention relates to a fluid transfer system including two elongated fluid transfer chambers, fluid inlet and outlet arrangements at each end of each chamber, oppositely directed one-way inlet...
|
|
|
6006776 |
Integrated drive generator recirculation valve with feedback control
A fluid circulation system in accordance with the invention includes a first fluid utilizing device (12) requiring a minimum fluid flow having an input (14) for receiving the minimum flow and an...
|
|
|
5971718 |
Method and apparatus for regulating a volumetric fuel flow between a feed pump and a high-pressure pump
A method and an apparatus for regulating a volumetric fuel flow regulate a fuel flow delivered by a feed pump to a high-pressure pump of an injection system as a function of a volumetric fuel...
|
|
|
5967761 |
Method for modulation lag compressor in multiple compressor system
A method for controlling modulation of at least one compressor in a compressor system includes the steps of providing a host controller including a microprocessor for controlling overall operation...
|
|
|
5865601 |
Safety device for avoiding entrapment at a water reservoir drain having a secondary blowing pump
A safety device for avoiding entrapment at a water reservoir drain by using a vacuum operated switch to interrupt power to the reservoir pump and by using a pressure pump to generate a positive...
|
|
|
5842837 |
Tandem pump apparatus
A tandem pump apparatus is featured having a main suction passage connected to a fluid source. The main suction passage branches into first and second suction passages which, in turn, feed into...
|
|
|
5547349 |
Oil pump system
An oil pump system includes an oil pump, a first hydraulic passage, a second hydraulic passage, a return hydraulic passage, and a control valve. When a revolving speed of a rotor of the oil pump is...
|
|
|
5417649 |
Fluid transfusing device and method of control therefor
A fluid transfusing device and method of control therefor includes a plurality of pump driving portions and a microprocessor. Each pump driving portion is for driving a pump, and the microprocessor...
|
|
|
5416701 |
Hydraulic supply arrangement for use with active automotive suspension or the like
To avoid placing an unnecessary load on a prime mover, a pump control arrangement monitors automotive vehicle speed and inhibits an increase in pump output above a basic estimate when the vehicle...
|
|
|
5332367 |
Automotive air conditioning apparatus
An automotive air conditioning apparatus includes an input shaft connected to an engine, a pump unit disposed on the input shaft, a compressor unit disposed on the input shaft, and a separator wall...
|
|
|
5244357 |
Method for continuous control of delivery rate of reciprocating compressors and device for carrying out the method
Method for the continuous control of the delivery rate of reciprocating compressors by occasional holding-open of the suction valves by a lifting device (8), which is actuated by a lifting force...
|
|
|
5244353 |
Gas pumping installation having means for regulating its pumping speed
A Roots-type machine is connected to an enclosure to be evacuated via a suction inlet portion, and to a primary pump via a delivery outlet portion. A bellows is disposed transversely in the inlet...
|
|
|
5211544 |
Hydraulic pump
A constructionally simplified hydraulic pump has two pump elements which discharge from a common suction chamber. The flows can be alternatively fed in common to a pressure outlet or separately to...
|
|
|
5152156 |
Rotary compressor having a plurality of cylinder chambers partitioned by intermediate partition plate
An intermediate partition plate is provided between a plurality of adjacent cylinders to partition cylinder chambers in the cylinders from each other. A guide opening portion, in which respective...
|
|
|
5040951 |
Oil pump
An oil pump includes a pair of pump cartridges, one of which can be unloaded. Oil which is discharged from one of the pump cartridges is supplied to an accumulator through a supply passage in which...
|
|
|
4957283 |
Vacuum system for feeding sheets
A pneumatic system which in the preferred embodiment includes a pump having a primary suction port and a secondary suction port, with the pump being operable for generating vacuum pressures at both...
|