1126 results about "High pressure chamber" patented technology

A high pressure chamber comprises a chamber housing, a platen, and a mechanical drive mechanism. The chamber housing comprises a first sealing surface. The platen comprises a region for holding the semiconductor substrate and a second sealing surface. The mechanical drive mechanism couples the platen to the chamber housing. In operation, the mechanical drive mechanism separates the platen from the chamber housing for loading of the semiconductor substrate. In further operation, the mechanical drive mechanism causes the second sealing surface of the platen and the first sealing surface of the chamber housing to form a high pressure processing chamber around the semiconductor substrate.

Self-pumping hydropneumatic suspension strut with internal ride-height control, particularly for motor vehicles, with an outer tube with an oil-filled high-pressure work space under the pressure of at least one gas cushion acting as spring in a high-pressure chamber, a second work space on the piston rod side, and an axially displaceable piston which is supported by a hollow piston rod and is sealed in the work cylinder. The piston rod which is driven by the springing movement of the vehicle conveys oil from a low-pressure chamber to the second work space connected to the high-pressure chamber and a pump rod is received in a pump cylinder formed by the hollow piston rod. The high-pressure chamber is connected with a flow connection arranged in the piston rod guide, wherein a filling bore hole arranged in the outer tube communicates with the flow connection when the piston rod guide is not completely mounted, and the filling bore hole is closed by the piston rod guide after the piston rod guide slides axially into the outer tube.

A reactor / purifier for generating pure hydrogen in a stack or array of pairs of alternatingly connected high and low pressure reactor chambers wherein a gas-porous turbulence-promoting screen structure washcoated with a steam-reforming catalyst is sandwiched between a planar hydrogen-selective palladium alloy membrane and a planar gas-impermeable heat-conducting metal plate within the high pressure reactor chamber of each high pressure reactor chamber; and wherein the catalyst-coated structure in each high pressure chamber is reacted with steam and hydrocarbon fuel, such as methane or syn / gas, and / or carbon monoxide at an appropriately controlled temperature of between about 200° C. to 650° C. to produce hydrogen and carbon oxides within an isothermal temperature range in each high pressure reactor chamber, while simultaneously permeating pure hydrogen therefrom through the membrane into the corresponding connected low pressure reactor chamber.

The invention discloses a hydraulic buffer device and a buffer oil cylinder comprising the device, belongs to the field of hydraulic parts and overcomes the defects that a buffer mechanism of the buffer oil cylinder in the prior art is complex, high in manufacturing accuracy requirement, difficult in structural arrangement, low in buffer efficiency and reliability, poor in buffer effect controllability and buffer quality, and difficultly employs a composite mode of throttling back pressure of an oil return chamber and pressure-relief unloading of a high pressure chamber at the same time. An annunciator is arranged at a position where an oil cylinder journey approaches to a destination so as to control movement of a slide valve of the buffer device, thus the opening degree and the liquid flow direction of a valve opening of a buffer valve are dynamically regulated, and an oil pressure of an oil cylinder which enters into the oil return chamber is further controlled; a movement velocity of an oil cylinder piston at the destination of the journey is controlled through the modes of the pressure-relief unloading of the high pressure chamber of an oil cylinder and / or the throttling back pressure of the oil return chamber, thus high quality buffer, good buffer controllability and high reliability of the oil cylinder are realized, and the overall quality of a product is improved.