112results about "Operating means/releasing devices for valves" patented technology

A patient interface assembly for use with gas monitoring. The patient interface includes a mask shell having a portion that seals against the face of a patient and a mask attachment coupled to an opening of the shell. The mask attachment has a mask connection section coupled to the opening of the shell, an airway adapter section that serves as a gas measurement site for use in measuring a respiratory variable, and a breathing system connection section adapted to be coupled to a to a patient circuit. The gas measurement site, which includes a window, may be disposed on the conduit, the shell, or both. An access port, defined in the mask, the mask attachment, or both permits a sampling tube to be placed in fluid communication with an airway of a patient.

A modular insert is provided for defining an air path for use with CPAP, VPAP, auto CPAP or a ventilator. The modular air path insert may be provided with one or more sound suppressing structures, e.g., to act as mufflers. The insert can be readily exchanged or replaced, e.g., for hygienic purposes.

A pressure-assisted breathing system is provided that comprises: a pressure-generating circuit for maintaining a positive pressure within the system; a patient interface device coupled to a patient's respiratory system; a respiratory circuit for providing gas communication between the pressure-generating circuit and the patient interface device; means for introducing aerosol particles into the gas flow in the respiratory circuit; and means for discontinuing the introduction of aerosol particles into said respiratory circuit gas flow when the patient exhales. In one embodiment, a flow sensor is disposed in an auxiliary circuit in fluid communication with the respiratory circuit and electronically coupled with a nebulizer. The flow sensor is adapted to detect changes in the volumetric flow rate of gas in the auxiliary circuit when the patient exhales and stops exhaling and sends corresponding electronic signals to the nebulizer to turn off and turn on, respectively.

An exemplary device and method for microfluidic transport is disclosed as providing inter alia a passive check valve (100), a fluid inlet channel (210), a fluid outlet channel (220) and a pumping cavity (240). The fluid inlet channel (210) is generally configured to flow a fluid through the check valve (100). The check valve (100) generally provides substantially passive means for preventing or otherwise decreasing the incidence of purged outlet fluid re-entering either the pumping cavity (240) or the fluid inlet channel (210). Accordingly, the reduction of backflow generally tends to enhance overall pumping performance and efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for substantially self-priming micropumps that may be readily integrated with, for example, existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.

A device is provided for operating inflation and deflation valves of an air chamber of a scuba diver's balancing jacket. The device comprises inflation and deflation valves and a push-button for operating the valves that can be controlled by the diver. The device also has a handgrip projecting forwardly from a side position on a lower edge of the jacket, the push-button being situated on the handgrip.

A sensor-type flushing system for a toilet tank includes a pressured tank installed in a toilet tank, both a switch valve and an electromagnetic valve connected to the pressured tank. The pressure tank is provided with a drain valve so that pressured tater stored in the pressured tank may be made to flow out of the drain valve to flush pressed water in the toilet bawl by handling manually an operational device set on an outer wall of the toilet tank. Further, the operational device is provided with a sensor, which senses a human body and emits and receives signals to electrically open the electromagnetic valve so as to open the drain valve for flushing pressured water into the toilet bawl. Thus the sensor-type flushing system has two functions of manual and automatic flushing.

A water treatment system is provided including a disinfection system, a filter and a turbine generator. A manual pump is positioned downstream of the filter to create negative pressure to draw water through the filter. The manual pump also creates positive pressure to dispense treated water from the outlet of the system. The movement of the water through the system powers the turbine generator. The power generated can be used to monitor a characteristic of the water treatment system.

There is provided a synthetic resin member, having a screw formation portion and synthetic resin body. The screw formation portion has: a cylindrical metal portion having a first end and a second end, a female screw part being formed on the cylindrical portion; a release prevention portion formed at the first end; a flange portion formed at the second end, the flange portion having a first surface and a second surface opposite to the first surface; and a rotation prevention portion formed on the first surface. The synthetic resin body has: a body portion perpendicularly extending to have a third end and a fourth end, the body portion having a screw engagement portion perpendicularly penetrating the body portion. The cylindrical metal portion is inserted into the screw engagement portion. The release prevention portion is caulked with the third end of the body portion. The rotation prevention portion is engaged with the synthetic resin body at or near the fourth end of the body portion.

A fuel injector comprising a hollow body for housing a metering valve with a calibrated pipe for outlet of the fuel from a control chamber. The calibrated pipe is normally kept closed by a shutter controlled by an electromagnet comprising a magnetic core and an electric coil housed in an annular slot of the core. The coil outer cylindrical surface forms a gap with the annular slot so as to be lapped by the fuel coming out of the calibrated pipe. The coil comprises a bobbin having a pair of appendages for supporting electric supply plugs, which are englobed at least in part in a block of non-magnetic material. The bobbin has a substantially cylindrical rib, one flange adjacent to an end portion of the plugs, and another flange having a smaller diameter that forms a passage for the fuel between the calibrated pipe and the gap.

A food and beverage industry membrane valve structure with a membrane which separates a control compartment from a product compartment in a food or beverage handling or processing machine. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

The invention discloses a compact material flow adjusting valve, which comprises a valve body, a manhole door, a tapered sleeve and a liner barrel, wherein the manhole door is correspondingly arranged at the side part of the valve body; the tapered sleeve is supported inside the valve body; the liner barrel is supported inside the tapered sleeve; the compact material flow adjusting valve further comprises a first valve plate, a second valve plate and an executing mechanism, wherein the first valve plate and the second valve plate are correspondingly arranged below the liner barrel; the first valve plate and the second valve plate move relatively and are used for controlling the velocity or the time of material flow; and the executing mechanism are used for driving the first valve plate and the second valve plate so as to transmit power to the first valve plate and the second valve plate in a linkage way. With the adoption of the compact material flow adjusting valve, the stable and smooth operation of a blast furnace is ensured, the furnace burden segregation is prevented, the structure is compact, the height is relatively low, and the production cost is reduced effectively.

A shaft sealing device with a simple internal structure switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because of no abrasion accompanying the movement of a sealing material or a sealing member, thereby enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body.

The invention provides an ultrahigh-pressure hydrogen electromagnetic valve having a pressure relief function and applied to a vehicle. The ultrahigh-pressure hydrogen electromagnetic valve comprisesa valve body; the valve body is provided with a gas charging interface which is connected with a gas cylinder; the valve body is internally provided with a main gas charging channel and the gas charging interface; the valve body is also internally provided with a manual control valve interface, an electromagnetic valve interface and a pressure reducer interface; one side of the pressure reducer interface is provided with a low pressure output interface; a manual control valve is installed at the manual control valve interface; an electromagnetic valve is installed at the electromagnetic valveinterface; a pressure reducer is installed at the pressure reducer interface; the gas charging interface communicates with the main gas charging channel through the manual control valve; and the maingas charging channel communicates with the low pressure output interface through the manual control valve, the electromagnetic valve and the pressure reducer in sequence. The ultrahigh-pressure hydrogen electromagnetic valve provided by the invention has the advantages of reasonable structure, high integration level, good safety and long service life.

An apparatus is disclosed for a tap handle for beverage dispensing comprising a ceramic, porcelain or stoneware handle filled with a foam, preferably polyurethane foam which renders the tap handle more resilient and resistant to sharding. Ideally, polymeric diphenylmethane diisocyanate foam is injected into a tap handle shell in lquied form, which solidifies and is capped with a glue, an internally threaded cap and a protective plastic cap.

The invention provides a flow control valve, which can be used for flow control in an exhaust gas recirculation pipeline of an internal combustion engine. The flow control valve is provided with a pipe communicating the pipeline, wherein a rotary plate for blocking the pipe is arranged along the vertical direction of the pipe; at least one opening is reserved on the rotary plate; the rotary plate can rotate to the position where the opening and the pipe are superposed; the diameter of the opening is not greater than the outer diameter of the pipe; and a drive mechanism can drive the rotary plate to rotate around the axis of a rotating shaft and the drive mechanism can be a piezoelectric drive mechanism. The flow control valve has the advantages of compact and simple structure, smart size, low energy consumption, low noise and easy and accurate flow adjustment.

A water flushing system for a pressurized subterranean water distribution system includes an inlet conduit for receiving pressurized water from the subterranean water distribution system; an outlet fluidly connected to the inlet conduit for discharging pressurized water in the inlet conduit downwardly towards a drain; and a control valve for controlling the flow of pressurized water in the inlet conduit. The water flushing system further includes one or more of the following features: a freeze protection assembly, a detachable coupling system, a dechlorination system, and a backflow prevention system.

A measurement-while-drilling servo-actuator for use in mud-pulse telemetry, which determines linear position of a poppet valve therein without counting revolutions of a stepper motor which positions said poppet valve. A sensor senses a magnetic field intensity value, or an inductance value, which is proportional to the position of the poppet valve relative to the sensor. A look-up table of reference outputs corresponding to known position of the poppet valve is used to determine the position of the poppet valve. A method of determining a position of a poppet valve in a mud pulser is further disclosed.

A method for bounce suppression of a valve member operated by a piezo actuator during the closing phase of a valve in an internal combustion engine, having the following steps: partial discharging of the piezo actuator, whereby the valve member is braked even before reaching the valve seat, interruption of the discharge of the piezo actuator, whereby the piezo actuator is upset by the valve member and builds up an electric charge, renewed discharging of the piezo actuator, the residual charge after partial discharge and the charge built up during the charge interruption being at least partially dissipated. It is provided, according to the present invention, briefly to interrupt the discharge process, whereby the piezo actuator absorbs the energy of the valve member and, even before an elastic rebound takes place, the piezo actuator is discharged again, in order to dissipate the energy absorbed by the piezo actuator.

Disclosed is a slow-acting ON/OFF valve which includes a valve-opening pressure chamber that makes an actuating member (which actuates a valve body that comes into contact with and moves away from a valve seat to close and open a flow passage) move in a valve-opening direction against a spring biasing force in a valve-closing direction, and supplies air to the valve-opening pressure chamber, in minute increments, via a flow rate regulation valve. In this slow-acting ON/OFF valve, the dead time from the receipt of a valve-opening signal to the commencement of a valve-opening operation is short. A manifold is provided independently of the valve-opening pressure chamber. Between the valve-opening pressure chamber and the manifold, the following three valves are provided: a pressure regulation valve which allows air to flow into the valve-opening pressure chamber from the manifold until pressure in the valve-opening pressure chamber reaches a predetermined reserve pressure and which is closed upon the pressure in the valve-opening pressure chamber reaching the reserve pressure; a flow rate regulation valve which supplies air to the valve-opening pressure chamber from the manifold, in minute increments, after the pressure in the valve-opening pressure chamber reaches the reserve pressure; and an exhaust valve which rapidly discharges air in the valve-opening pressure chamber to the manifold upon pressure in the manifold dropping below the pressure in the valve-opening pressure chamber and is thereafter closed.

The invention provides an online alternating-current flow proportion regulation control device and belongs to the technical field of alternating-current hydraulics. The control device is characterized by comprising a crank, a slider, a connecting rod, a lever, a ball screw, a ball nut, a servo motor, a hydraulic cylinder and the like. The crank in a crank-connecting rod mechanism drives the slider to move through the connecting rod according to the sine rule, and sine rule change is transmitted to a piston of the hydraulic cylinder after being magnified/shrunk by certain times by a lever system composed of the lever, a lever bearing and the like. The piston enables the output end of the hydraulic cylinder to accurately output set alternating-current flow according to the sine rule change magnified/shrunk by certain times, so that real-time dynamic on-line accurate linear proportion regulation of the alternating-current flow is realized. The control device has the advantages that the device is smart in structure, reasonable in layout and high in measurement accuracy, the problem that the alternating-current flow cannot be regulated proportionally online with high precision by traditional crank length changing methods and the like is solved, and good promotional value is obtained.

The invention relates to a novel anti-eccentric wear hydraulic oil extraction device which comprises surface power equipment and underground produced liquid equipment. The surface power equipment comprises a power liquid storage tank, a plunger pump, an energy accumulator and a reversing valve; the underground produced liquid equipment comprises a power liquid pipeline, a power pump and a produced liquid oil tube, the lower portion of the power liquid pipeline is connected with a power pump piston, the lower portion of the produced liquid oil tube is connected with an oil extraction pump pump-cylinder, the oil extraction pump pump-cylinder is internally provided with an oil extraction pump plunger which is internally provided with a traveling valve, the lower portion of the oil extraction pump pump-cylinder is connected with an underground oil tube, a standing valve is arranged on the position where the underground oil tube and the oil extraction pump pump-cylinder are connected, and a produced liquid storage cavity is formed between the oil extraction pump plunger and the standing valve; a power pump cylinder barrel is connected with the oil extraction pump plunger through a weighing rod in an up and down mode; a produced liquid outlet is formed in the upper end of the produced liquid oil tube. Power liquid and produced fluid are isolated all the time, and huge equipment on the ground is removed; the reversing valve is arranged on the ground, the underground structure is simple and reliable, and operation is convenient; meanwhile, the problem that the service life of underground equipment is short is solved.

The invention discloses a button magnetic valve. A button switch is mounted on a valve body; after the mechanical button switch is manually operated to drive a magnet to axially move near a valve element, the magnet attracts a magnetic valve element to open the valve, or the magnet moves away to enable the magnetic valve element to automatically close the valve, so that the button switch in the magnetic valve is simpler in structure and lower in production cost compared with an electromagnet in the magnetic valve; and in addition, the button magnetic valve is not like the magnetic valve only electrified to work, and still can be used in some powerless places to form complementation with application of the electromagnetic valve.

The invention relates to a thermal expansion valve, belonging to the technical field of refrigeration control. The thermal expansion valve comprises an upper valve body, a lower valve body, a transmission rod and a valve core, wherein the upper valve body is provided with a first cavity, a second cavity and a pair of air return pipes; the lower valve is fixedly connected with the upper valve bodyand is provided with a pair of throttling pipes; the displacement of the transmission rod varies due to the influence of the temperature/pressure of a temperature sensing component; the valve core isarranged in the first cavity, and the displacement of the transmission rod controls the movement of the valve core so as to control the opening degree of a throttle port. The thermal expansion valve is characterized in that the directions of a refrigerant flowing across the throttle port are the same when the thermal expansion valve is in a forward throttling state and a backward throttling state. The invention overcomes the difference between forward throttling and backward throttling in the prior art, and can simultaneously prevent the refrigerant from generating nonuniform impact on the transmission rod during the throttling process, thus, the thermal expansion valve not only can increase the movement reliability of the transmission rod, but also can obviously reduce noise.