Abstract: This invention is intended to control the flow rate and pressure in a valve body by operating a throttling valve connected to the opening of the valve body by a remote pipe. The construction of the control valve is as follows: A spool type pressure compensated control valve 3 is installed on the upstream side of a flow passage of the valve body having an inlet 2 and an outlet 5, and a variable orifice 3' is formed on the pressure compensated control valve 3. On the downstream of the pressure compensated control valve 3 is installed a flow control throttling valve 4, which is urged by a spring 7 in the direction of closing the flow passage. The spring chamber 12' of the flow control throttling valve 4 is connected to the outlet 5 through a central passage 12 in the throttling valve 4. A chamber 20 at the other end of the flow control throttling valve 4 is connected to the inlet 2 via a variable throttle 16, and is also open to the outside of the valve body.

Abstract: An adjustable differential pressure valve that controls the pressure of a input fluid by maintaining a pressure differential between the fluid and another fluid, or fluids, of reference pressure, acts as a bypass valve and allows the pressure differential to be adjusted from the outside of the valve either mechanically or by remote hydraulic pressure. In an alternative embodiment of the invention, opposite ends of extensions of the piston are exposed to the outlet pressure of the valve by a passage communicating directly through the extensions and the piston.

Abstract: A surge reliever relief valve is provided in which a flexible membrane is maintained in a peripherally sealed relationship across a rigid grid. The grid bounds the laterally adjacent intake and output regions of the valve. Intake pressure extends the membrane allowing flow between intake and output. Extension of the membrane is limited by a retainer. Extension may be elastic or inelastic.

Abstract: A hydraulic actuator includes a pneumatic piston, a hydraulic piston, and an engine valve on a common shaft. The pneumatic piston is urged between first and second stable positions primarily by a double acting pneumatic spring, with high pressure hydraulic fluid connected to a first hydraulic chamber being used to cock the hydraulic piston in a first stable position (engine valve closed). Hydraulic fluid isolated in a second hydraulic chamber is used to latch the hydraulic piston in a second stable position (engine valve open). Transfer of hydraulic fluid between first and second chambers is effected by a carrier for two check valves, which carrier in a first position disables the second check valve to permit fluid to flow from the second chamber to the first chamber, whereupon the first check valve closes (cocking). In a second position the carrier disables the first check valve to permit fluid to flow from the first chamber to the second chamber, whereupon the second check valve closes (latching).

Abstract: A method and apparatus for controlling the pressure to the bonnet of a pressure regulator, wherein two solenoid valves in combination with a buffer tank and a microprocessor to control the solenoid valves. When the pressure within the regulator bonnet exceeds a specified maximum value, one of the solenoid valves opens to allow the control pressure going to the regulator bonnet to be decreased. When the pressure in the regulator bonnet falls below a preset minimum value, the other solenoid valve opens to allow increased control pressure to enter the regulator and raise the regulator bonnet pressure to the level required.

Abstract: An adjustable differential pressure valve that controls the pressure of a input fluid by maintaining a pressure differential between the fluid and another fluid, or fluids, of reference pressure, acts as a bypass valve and allows the pressure differential to be adjusted from the outside of the valve either mechanically or by remote hydraulic pressure.

Abstract: A mud saver valve in which a cylindrical resilient sleeve is pressed against an inner tubular member by a pressurized gas to prevent flow from above the valve to below the valve at low pressures, and which is fully opened for free flow at higher pressures.

Abstract: An actuator comprising a housing having a chamber and a piston slidably received within the chamber. The housing is provided with an inlet port to the chamber for the introduction of an operating fluid to cause the piston to slide within the chamber. The housing is provided with means for releasably attaching the actuator relative to a stem to be actuated. Additionally, the housing includes a plug for sealing an aperture to the chamber and receiving the stem. The plug moves into the chamber to enable the piston to act upon the stem via the plug.

Abstract: A pressure regulator includes a hermetically sealed housing that limits the potential for leak paths to atmosphere or exterior to the housing. The regulator includes a dampening arrangement for limiting oscillations during high flow rates. A stem clip secures a poppet assembly to a movable member of the regulator. The stem clip permits radial movement of the poppet assembly to facilitate centering of the poppet assembly relative to a valve seat. The poppet assembly includes a self-tapping poppet to precisely set the opening between the poppet and valve seat irrespective of tolerance stackup.

Abstract: An electronically controlled actuator which compresses a fluid thereby storing potential energy as it transitions from a first to a second position is disclosed. The compressed fluid exerts a high force on the actuator and the potential energy is recovered in returning the actuator to the first position. A latching arrangement automatically locks the actuator shaft as it reaches the second position. The latching arrangement is selectively unlocked at the prescribed time to allow the stored potential energy to return the actuator to the first position.

Abstract: An electronically controllable hydraulically powered asymmetrical valve actuating mechanism for use in an internal combustion engine of the type having engine intake and exhaust valves with elongated valve stems is disclosed. The actuator is a bistable electronically controlled hydraulically powered transducer having an armature including a power piston which is reciprocable between first and second positions along with a hydraulic arrangement for powering the armature from a first (engine valve closed) position to a second position. A bistable control valve is operable in one of its stable states to supply high pressure hydraulic fluid to one face of the piston to power the armature and in the other of its stable states to relieve the high pressure fluid from the piston. The mechanism has a compressible resilient arrangement such as a coil spring or a chamber in which air is compressed during motion of the armature from the first position to the second position.

Abstract: An air-blasting cartridge comrises a housing (1) subdivided into an inlet chamber (3) and a discharge chamber (4) by a piston (2) arranged along its longitudinal axis. The inlet chamber (3) communicates with a source of compressed air through an air admission tube (6) which runs through an axial port of the piston (2). The discharge chamber (4) communicates with the inlet chamber (3) through an annular gap (7) between the air admission tube (6) and the piston (2). The discharge chamber (4) is adapted to communicate with the surrounding atmosphere at the instant of its discharge. The area of the piston end surface (10) facing the discharge chamber (4) is greater than the area of the piston end surface (11) facing the inlet chamber (3) but is smaller than the area of the end surface (12) of the collar (8) on the piston (2) that faces the discharge chamber (4), said collar forming, together with the housing (1), an additional chamber (9) on the side facing the inlet chamber (3).

Abstract: A surge reliever relief valve is provided in which a flexible membrane is maintained in a peripherally sealed relationship across a rigid grid. The grid bounds the laterally adjacent intake and output regions of the valve. Intake pressure extends the membrane allowing flow between intake and output. Extension of the membrane is limited by a retainer. Extension may be elastic or inelastic.

Abstract: Included in a connection arrangement is a valve device (4) which is so arranged as to be capable of longitudinal displacement inside a supporting device (3). During its opening movement the valve device is capable of displacement into a space arranged inside the supporting device, which space is sealed in relation to a fluid capable of connection to the arrangement with the help of the valve device and a sealing device (5a, 5b). An enclosed volume is thus formed with the help of the supporting, valve and sealing devices. Compressible air or gas enclosed within this volume assumes a first pressure with the valve device in its closed position, which first pressure preferably corresponds to atmospheric pressure, and assumes a second pressure which exceeds the first pressure with the valve device in its fully open position, which second pressure is less than the maximum pressure of the fluid.

Abstract: A gas regulator includes a housing having a high pressure chamber with an inlet passage thereto, a low pressure chamber with an outlet passage therefrom, and an orifice extending between the high pressure chamber and the low pressure chamber. The low pressure chamber is open at one end and an enclosed bonnet is mounted on the housing across the open end of the low pressure chamber. A movable pressure sensing/control element is mounted across the open end of the low pressure chamber and separates the low pressure chamber from the bonnet. The bonnet is filled with a gas under pressure which applies a force onto one side of the pressure sensing/control element. A valve plug is in the high pressure chamber and is connected to the pressure sensing/control element so as to be movable toward and away from the orifice to open and close the regulator. A spring is connected to the pressure sensing/control element so as to apply a force thereto opposite to the force applied by the gas in the bonnet.

Abstract: Discrete volumes, or slugs, of liquid are accelerated to high velocities utilizing energy stored by compressing the liquid. Liquid is forced into a pressure vessel already filled with liquid to effect the compression. A slug of liquid is ejected from the pressure vessel into a cumulation nozzle by the energy stored in the compressed liquid when a valve is rapidly opened. The valve is unseated when an unseating force exceeds a closing bias. The valve is then opened rapidly by an opening force generated by the compressed liquid. By repetitively introducing highly pressurized liquid into the pressure vessel, the valve automatically cycles to generate a series of pulsed liquid jets. Rapid opening of the valve is aided by an extension on the valve member which sealingly slides inside the passage of the cumulation nozzle to block release of liquid until the valve member accelerates sufficiently that the required opening rate is achieved as the extension clears the nozzle passage.

Abstract: A back pressure regulator of the diaphragm type. A metal diaphragm is held in a cavity formed by opposed faces of top and bottom portions of the unit. The opposed faces are tapered so that the depth of the cavity is greatest in the central portion of the diaphragm, allowing for movement of the diaphragm. A fluid outlet leading into the cavity at the underside of the diaphragm is sealed by contact of the underside of the diaphragm with an O-ring which surrounds the fluid outlet and extends into the cavity. When the pressure of the fluid in the cavity above the diaphragm is greater than the pressure of the fluid beneath the diaphragm the diaphragm is maintained in contact with the O-ring to prevent flow through the outlet.

Abstract: Constructed in a cylindrical body (10) are a central chamber (16) fitted with a release hole (24) and two opposing chambers (18, 20). The ends of a floating piston (26) are engaged in these opposed chambers and subjected to both the pressure to be controlled and a reference pressure. A cylindrical box (34) integral to the piston (26) slides in the central chamber (16). In the closed position, the box (34) closes the release hole (24) to form a seal and the piston (26) closes the chamber under control (18) without forming a sealed closure. In the open position, a radial hole (48) cut in the wall of the box (34) is opposite the release hole (24). A decompression of the central chamber (16) is obtained as the valve starts to open (narrow channels 52) and a deceleration of the box (34) is obtained at the end of this opening (hole 44 and stud 54). Applications: Pressure relief valve for the oil industry, reactionless valve, pressure control nozzle.

Abstract: An improved fast response shut-off valve for use with pneumatic tools and the like that utilizes a solenoid for holding the valve open and utilizes fluid pressure for driving the valve closed. Further, a field suppressor may be utilized to decrease the magnetic flux strength of the solenoid coil very rapidly increasing the rapidity with which the valve can be moved from the open to closed position.

Abstract: An injection nozzle for injecting fuel into the combustion chamber of an air-compressing internal combustion engine is provided, having a valve closing member which lifts inwards from its valve seat as a function of the fuel pressure. The valve closing member is formed by a diaphragm which is firmly clamped in the nozzle body and lifts to a greater extent during the opening pressure of the injected fuel in the direction of the spray openings. A dilatant liquid or a non-dilatant liquid with a certain portion of gas is used as a closing spring for the diaphragm.

Abstract: Discrete volumes, or slugs, of liquid are accelerated to high velocities utilizing energy stored by compressing the liquid. Liquid is forced into a pressure vessel already filled with liquid to effect the compression. A slug of liquid is ejected from the pressure vessel into a cumulation nozzle by the energy stored in the compressed liquid when a valve is rapidly opened. The valve is unseated when an unseating force exceeds a closing bias. The valve is then opened rapidly by an opening force generated by the compressed liquid. By repetitively introducing highly pressurized liquid into the pressure vessel, the valve automatically cycles to generate a series of pulsed liquid jets. Rapid opening of the valve is aided by an extension on the valve member which sealingly slides inside the passage of the cumulation nozzle to block release of liquid until the valve member accelerates sufficiently that the required opening rate is achieved as the extension clears the nozzle passage.

Abstract: An exhalation valve assembly for use in a volume ventilator circuit is disclosed that comprises a valve body defining a chamber with a gas inlet conduit and a gas outlet conduit, both in flow communication with the chamber. A diaphragm extends across the chamber and selectively closes off the gas inlet conduit. A concentric ring support structure is disposed concentrically about the gas inlet conduit and is configured so as to support a portion of the diaphragm over the chamber.

Abstract: A cylinder valve for mounting on a high pressure gas cylinder for remotely controlling the flow of gas from the cylinder. The cylinder valve is resistant to hazardous gases and includes a fluid passage for conveying gas through the cylinder valve from an inlet for communicating with the high pressure gas cylinder to an outlet. A first valve is provided for opening and closing the fluid passage to control the flow of gas through the fluid passage. A pneumatically operated actuator is provided for operating the first valve in response to the application of an external control pressure to the actuator. A mechanism is provided to move the first valve and close the fluid passage in the event of loss of external control pressure to the actuator. A second valve is located downstream of the first valve in the vicinity of the outlet. The second valve is biased to close the fluid passage but is moved to open the passage in response to attachment of a connector to the outlet of the cylinder valve.

Abstract: A vibration damper for vehicles is described, the damper curve of which is required to be arbitrarily variable, to enable the damping to be adapted optimally to driving conditions. For this purpose, the invention has a vibration damper in which a regulating member actuable by an actuating device can be pressed with variable force against at least one spring washer of a valve closure element of a damping valve arranged in the damper piston. The contact pressure of the regulating member is arbitrarily variable and the regulating member can be pressed progressively against the spring washer of the valve closure element upon an increase of force in the radial direction.

Abstract: An improved pilot operated, spool valve includes a valve body with a spool that translates axially in a throughbore in the valve body. The spool is moved in response to air pressure in a first direction and is moved in the opposite direction by a combination of a mechanical biasing force and fluid pressure.

Abstract: An air regulator system using air-piloted valves for controlling a plurality of different air flows in a powder spray system. A control regulator is used to set the flow rates of a plurality of flow regulators, each of which is associated with a particular air flow in the powder spray system.

Abstract: An exhalation valve assembly for use in a volume ventilator circuit is disclosed. The valve assembly comprises a valve body defining a chamber with a gas inlet conduit and a gas outlet conduit, both in flow communication with the chamber. A diaphragm extends across the chamber and selectively closes off the gas inlet conduit. Upwardly extending strut members are disposed on an inside surface of the valve body and are used to position a removable ring member adjacent the diaphragm. The ring member is configured so as to support a portion of the diaphragm over the chamber.