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7334598 |
Pressure regulator adaptable to compressed gas cartridge
This pressure regulator is specifically designed to operate with a portable compressed gas cartridge thus reducing the high vapor pressure found in compressed gas cartridges down to a substantially...
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7278402 |
Device for conveying fuel out of a tank and to a combustion engine
A diaphragm valve having a first chamber and a second chamber, which is separated from the first chamber by means of a valve member which cooperates with a valve seat. A first connecting conduit...
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6948519 |
Device for regulating the flow of gas toward user equipment
A device for regulating a flow of gas toward user equipment, which comprises a first regulation stage and a second regulation stage arranged downstream in a direction of flow of the gas to be...
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6932102 |
Device for regulating the flow rate and/or the pressure of a fluid
The present invention relates to a device for regulating the flow rate and/or the pressure of a fluid transferred from a high-pressure reservoir (H) to a reservoir (S). A first valve ( 1 ) provided...
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6843266 |
Regulator with erosion resistant seal assemblies
The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. An elongate control stem engages...
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6758234 |
Pressure reducing valve
A combined fluid pressure reducing and relief valve having aligned inlet and outlet connections, a pair of abutting rotary disc valve sets each having an inboard stationary and an outboard rotary...
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6694998 |
Micromachined structure usable in pressure regulating microvalve and proportional microvalve
A microvalve device includes a first plate, a second plate and a third plate. The second plate is connected between the first plate and the third plate. The second plate contains a stationary...
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6595231 |
Device and method for regulating the pressure of a gas stream
Disclosed is a device for regulating the pressure and/or flow of a gas stream, which device comprises a housing ( 9, 109 ) which is provided with a pressure-regulating chamber ( 4, 104 ), at least...
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6584999 |
Fluid pressure controller
A fluid pressure controller has an air supply valve plug displaceable under an action of pilot pressure of a pilot chamber. When the air supply valve plug is seated on a seat section, fluid...
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6568418 |
Precision regulator
The precision regulator connects to a high pressure fluid source and regulates the pressure to a downstream apparatus. If an overpressure occurs, it can be vented to atmosphere. An elongate control...
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6244410 |
Starting control to control a hydraulic piston /cylinder unit
The present invention relates to control of a hydraulic piston/cylinder unit, in particular a multi-disc clutch having a control valve which can be moved into an open and a closed position, a first...
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6095177 |
Precontrolled 3-way pressure control valve
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5857479 |
Precontrolled three-way pressure reduction valve
A precontrolled three-way pressure reduction valve having essentially vibration-free operation is encased in a cartridge and has a hollow control piston wherein a working fluid space is formed as a...
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5705070 |
Micromachined filters
The fluid handling devices are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The devices are so miniaturized, corrosion-resistant and...
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5522531 |
Safety device for nailing machine
In a safety device for a nailing machine which has a compressed air introducing opening for introducing a compressed air therefrom and an air chamber for storing compressed air introduced from the...
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5499650 |
Fluid control valve for a hydraulic system operating with variable viscosity, contaminated, fluid
Problems such as slow frequency response and low reliability when operating with contaminated fluids of variable viscosity are alleviated in a low pressure hydraulic system (10) which utilizes a...
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5460198 |
Pressure-activated flow-control valve
A valve assembly used in combination with a pressurized-fluid source having a high-pressure side and a low-pressure side and a load has a pressure-actuated flow regulating valve having a housing...
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5329841 |
Piston-slide-valve
A piston-slide valve including a housing in which a piston with at least one oil groove and control edge is guided shiftable or slidable in a bore characterized thereby that the oil groove of the...
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5327926 |
Flow regulator
Pressure flow regulator for use in pneumatic pressure control devices for maintaining a constant predetermined output pressure from a given constant or variable input pressure. The regulator...
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5255701 |
Hydraulic pressure regulator
Described is a hydraulic pressure regulator with automatic self-relief. A control piston disposed in a regulator housing between an inlet pressure chamber and an outlet pressure chamber for a...
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5247959 |
Multi-function valve
A multi-function valve has a floating disc (24) with concentric annular ribs (25,27) on one face for cooperation with respective first and second seatings, and an annular rib (26) on its other face...
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5188015 |
Automatically sequenced hydraulic cylinder mechanism
An automatically sequenced hydraulic cylinder mechanism, including a hydraulic cylinder having a piston rod which is attached to a working member. The hydraulic system includes a pump which...
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5154203 |
Proportional modulator for an electropneumatic braking system
A proportional modulator includes valve elements actuated by a proportional solenoid that controls communications between an inlet port, an outlet port, and an exhaust port. The pressure level at...
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4986738 |
Airflow control system pump and housing
A housing containing an air pump and an air pressure supply system for supplying air to a body support, such as an air mattress. The housing contains, in addition to the air pump, diaphragm type...
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4943032 |
Integrated, microminiature electric to fluidic valve and pressure/flow regulator
A pressure regulator integrated in a sandwich of pyrex and silicon wafers. A first integrated valve comprising a silicon wafer in which there is etched a cavity so as to leave a flexible membrane...
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4928723 |
Capacity control valve for a compressor
An improvement in a capacity control valve for use in a fluid compressor with a relatively high pressure HP and a relatively low pressure LP for changing the operational characteristics thereof by...
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4917140 |
Pressure regulator valve
A pressure regulator valve has a valve spool slidably disposed in a valve bore to control the pressure in a hydraulic passage by exhausting excess fluid delivered to the passage. The valve also has...
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4872472 |
Fluid pressure regulating valve
The invention relates to a pressure-regulating valve with slide valve, comprising three decreasingly pressurized enclosures: an admission chamber, a discharge chamber and a return chamber. Said...
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4838298 |
Hydraulic latch device
An hydraulic latch device comprises a housing having an inlet (14) for hydraulic fluid, an outlet (17) for hydraulic fluid, and first and second spool means (63,67; 62) slidably mounted in the...
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4836089 |
Series spool pressure regulator arrangement for a double-acting hydraulic actuator
A regulator arrangement (14) for a servo system (10) having a first stage valve spool piston (44) for developing a primary operational fluid (P c ) and a second stage valve spool piston (70) for...
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4819695 |
Pressure servo regulator
Hydraulic pressure servo-regulator, intended to provide a hydraulic fluid pressure corresponding to a given electrical signal, comprising an electromechnical device (10) connected to a valve...
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4796652 |
Pressure regulator for hydraulically controlled machine tools
A pressure regulator for hydraulically controlled machine tools comprises a first directly controlled three-way pressure-regulating valve with which required work pressure can be set by a machine...
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4765385 |
Tire inflation-deflation system
A pressure-controlled remotely-operated valve for utilization in respective wheels of a vehicle, on-road, off-road type. The valve is functional to effect tire deflation or tire inflation in a...
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4747425 |
3-way pressure reducing valve having means for monitoring the secondary pressure
The invention relates to a three-way pressure reducing valve for reducing a primary pressure to a secondary pressure. Said three-way pressure reducing valve comprises means for monitoring the...
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4732077 |
Air spring
A pressure controller for an air spring having a gas-filled, variable interior space for spring action between relatively-vibrating bodies has interconnected intake and outlet valve stems for...
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4682621 |
Modulator valve
A modulator valve has a modulator member which is slidably mounted in a cylinder and through which an air flow passage extends. A valve member is slidably mounted in the air flow passage and is...
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4667693 |
Pressure-reducing apparatus
The present invention relates to an improved pressure-reducing apparatus comprising a casing with a gas inlet and a gas outlet, a cover mounted on the said casing, a manometric membrane clamped...
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4657041 |
Oil pressure control apparatus
The present invention relates to an oil pressure control apparatus which comprises an oil pressure pump, a pressure regulating valve in a first oil line and a drain valve in a second oil line. A...
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4651766 |
Vacuum limiting arrangement
A vacuum limiting arrangement uses a three-port, two-position valve in conjunction with a vacuum sustaining valve to limit the vacuum applied to a vacuum driven device. A source of vacuum, such as...
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4624277 |
Pressure regulating and relief valve
A combination pressure regulating valve and pressure relief valve is disclosed in which the outlet pressure is regulated to a certain pressure level below the inlet level and excess pressures on...
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4622815 |
Pressure regulator
A pressure regulator comprises a high-pressure chamber (2), and an atmospheric pressure chamber (3) having an opening (4) for controlled high-pressure (C), between which a diaphragm (5) is disposed...
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4620561 |
Differential pressure control valve
This invention is directed to a differential control valve. The differential pressure is maintained by differing area surfaces on a piston assembly which will be balanced at a predetermined...
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4608976 |
Breathing protective apparatus with inhalation and exhalation regulator
An improved breathing protective apparatus having an inhalation regulator and a primary source of breathing air supplied to the user through a pressure line, and an exhalation regulator with a...
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4586533 |
Non-flowing modulating pilot operated relief valve
A pilot operated pressure relief valve system having a modulating action. The pilot valve is of the non-flowing type and comprises sleeve and control stem members translating within a channel. The...
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4565209 |
Pressure regulating valve with feedback control
The invention relates to a pressure regulating valve for pneumatic and hydraulic pressure media wherein a higher primary pressure is regulated to a desired lower secondary pressure. The valve...
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4509548 |
Reactant pressure differential control for fuel cell gases
A pair of spool valves C and D connected in tandem are balanced between pressures of reactant gases supplied to a fuel cell power plant G to control the pressure differences between the gases so as...
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4506693 |
Pressure regulating valve
A valve system is disclosed in which sleeves providing an unbalanced area are arranged so that the unbalanced area is exposed to the zone of higher pressure and produces a sealing force between the...
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4493335 |
Shear valve
A shear valve includes vent, supply and regulated ports, with the latter two including coaxial connection means.
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4491153 |
Pressure reducing valve
A pressure reducing valve comprises a valve housing having an axial bore coupled to a fluid operated load device, and first and second transversely extending control bores coupled to a supply tank...
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RE31785 |
Breathing valve assembly with diaphragm control of the exhaust ports
A breathing apparatus having an exhaust valve and a diaphragm actuated inlet valve, wherein the exhaust valve includes a sealing surface against which the diaphragm normally is sealingly engaged to...
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