Abstract:
A stretching system for stretch-blow molding machines for stretch blow molding containers from preforms, having at least one stretching unit which is hydraulically actuated for stretching a preform, with a hydraulic pressure tank which is at least partially filled with a hydraulic medium, for example water, and which is at least partially filled with a gaseous medium, for example compressed air; and wherein the stretching unit includes a stretching cylinder and a stretching piston, the stretching system being designed to conduct the hydraulic medium out of the hydraulic pressure tank to the stretching cylinder of the stretching unit, whereby the stretching piston in the stretching cylinder can be moved hydraulically.
Abstract:
A microfluidic valve assembly includes a structure defining a microfluidic fluid path and an actuator that can be moved between different positions controlling flow through the channel. In one embodiment, the actuator can be threaded into at least a portion of the structure, and can be moved rotationally between a first position, causing relatively greater constriction of a microfluidic fluid path, and a second position causing relatively lesser constriction of the fluid path. Actuating the actuator, e.g., by rotation, can deform material between the valve and the fluid path, thereby constricting at least a portion of the underlying fluid path and regulating the flow of a fluid in the fluid path. In another aspect, the invention provides a reservoir into which fluid can be placed and from which fluid can be introduced into a microfluidic system. In one embodiment, the reservoir is expandable and thereby able to store fluid under pressure for delivery to a microfluidic system.
Abstract:
A fluid transmission system adapted to provide a controlled force to a dynamic system includes a controller, a drive system coupled to the controller and to a path having a captured amount (mass) of fluid contained therein and an interface coupled to the captured fluid path.
Abstract:
An improved float and valve assembly for a liquid-gas accumulator including a buoyant float having a density selected in accordance with the working pressure, a float which can be lengthened or shortened, and friction and drag is reduced by optimizing the bore to rod length, honing coacting parts, providing a crown engaging the spring, and providing grooves in the exterior of the valve stem.
Abstract:
A liquid-gas accumulator having a housing with a top gas port and a bottom liquid port. A spring-loaded, normally open valve is positioned in the liquid port and a buoyant float is rigidly connected to the valve element for controlling the opening and closing of the valve in response to the liquid level in the housing. A resilient seal may be provided between the float and the valve element positioned to seat around the valve as the valve closes thereby providing a secondary seal.
Abstract:
PURPOSE: To provide a line braking device operable especially only when decrease in gas pressure in a pipe line continuous during a predetermined time, by providing a gas pressure detecting device to energize or deenergize a solenoid of an electromagnetic valve and thereby to close a valve when the gas pressure is decreased to values not more than a preset value. CONSTITUTION: A line braking gas conduit 17 is connected to a gas pressure detecting device 60 in a gas pipe line, and gas pressure as detected is inputted to a control device 61. When the gas pressure is decreased to values not more than a previously set value, a solenoid 22s of an electromagnetic valve 22 is energized to connect a gas conduit 14 from the gas pipe line to a gas conduit 16, and to fed hydraulic fluid in a pressure-proof tank 24 through a flow control valve 26 and a selector valve to a cylinder chamber 35 of an actuator body, thus closing a valve. The control device 61 acts to energize the solenoid of the electromagnetic valve 22 only when the detected gas pressure continuous to decrease over a predetermined time. COPYRIGHT: (C)1984,JPO&Japio
Abstract:
PURPOSE:To have abnormality diagnosis earlier than in a conventional arrangement by sensing the oil pressure and surface level in a pressure oil tank at all times and by making judgement of abnormality by reference to the allowable range of the oil pressure/surface level curve in accordance with the polytrope change characteristic. CONSTITUTION:The oil pressure/surface level curve is stored in an operational control device 7 and compared with the condition of oil pressure and surface level in the pressure oil tank 1 sensed by an oil pressure sensor 5 and a surface level sensor 6. That it, abnormality is sensed by judging if the oil pressure PN sensed lies between Pmax and Pmin as upper limit Y1 and lower limit Y2 of the oil pressure/surface level curve for the sensed surface level concerned HN.
Abstract:
A pulsation control device is constructed at least partially of a composite carbon (and/or other fibers)/epoxy exostructure having an oblong cylindrical or spheroidal shape, optionally with metallic portions or reinforcements, together with a non-metallic polymer non-load sharing liner. A pressure drop tube preferably extends from an opening through an exterior wall of the body into an interior space within the body.
Abstract:
An expandable accumulator and reservoir assembly includes a housing defining an interior chamber configured to contain a working fluid therein. An expandable accumulator is positioned at least partially within the housing. The expandable accumulator includes at least one flexible member configured to be at least partially immersed in the working fluid contained within the interior chamber. A rigid support member is positioned in the interior chamber and outside of the expandable accumulator. The rigid support member has at least one aperture to allow passage of the working fluid. An additional flexible member is positioned outside the rigid support member and has perimeter portions sealed to the outside of the rigid support member. The additional flexible member defines a flexible boundary between a primary reservoir inside the additional flexible member and a separate secondary reservoir outside the additional flexible member.