摘要:
An apparatus for supporting a stationary or moving substantially flat object without physical contact on an fluid-cushion. The object floats on a fluid cushion gap, the apparatus aimed for globally or locally adjusting the gap. The apparatus comprising: a first platform for supporting the object without contact, the platform having a substantially flat active surface comprised of one or more sectors, each sector comprising at least one of a plurality of basic cells, each basic cell having at least one of a plurality of pressure outlets fluidically connected through a pressure flow restrictors to a higher-pressure manifold associated with the sector in which the basic cell lies, the higher-pressure manifold is fluidically connected through main supply pipeline to pressurized fluid supply and at least one of a plurality of fluid-evacuation channels fluidically connected to a lower-pressure manifold associated with the sector in which the basic cell lies having main evacuation pipeline; wherein the flow restrictor characteristically exhibiting fluidic return spring behavior; and wherein at least one pressure control valve is interposed with at least one of the two main pipelines of at least one sector for controlling pressure levels of at least one of the two manifolds of that sector.
摘要:
A levitation transportation device capable of adjustment when an object being transported is displaced from the center of a transportation path, A levitation transportation device having a transportation path forming a transportation router for an object to be transported, a plurality of jetting nozzles for transporting the object in a levitated manner along the transportation path, one or more detection sections for detecting the direction of the transportation of the object being transported in the transportation path and a control section for independently controlling the plurality of jetting nozzles based on a detection result by the detection sections.
摘要:
The invention relates to a wafer inspection device (1). Said device comprises an air-cushioned table (2), which can be displaced in two directions (X,Y) that are perpendicular to one another. Several air nozzles (12, 14) are provided for this purpose. At least one valve (29) is connected to at least one electric control unit (27), said valve (29) being configured in such a way that a normal pressure prevails in the air nozzles (12, 14), when the electric control unit (27) delivers a corresponding signal.
摘要:
A non-contact support platform for supporting without contact a stationary or traveling object by air-cushion induced forces, the platform comprising at least one of two substantially opposite support surfaces, each support surface comprising at least one of a plurality of basic cells each having at least one of a plurality of pressure outlets and at least one of a plurality of air-evacuation channels at least one of a plurality of outlets, and one of a plurality of air-evacuation channels, each of the pressure outlets fluidically connected through a pressure flow restrictor to a high-pressure reservoir, the pressure outlets providing pressurized air for generating pressure induced forces, maintaining an air-cushion between the object and the support surface, the pressure flow restrictor characteristically exhibiting fluidic return spring behavior; each of said at least one of a plurality of air-evacuation channels having an inlet and outlet, the inlet kept at an ambient pressure or lower, under vacuum condition, for locally discharging mass flow, thus obtaining uniform support and local nature response.
摘要:
Method and device for rotating a wafer which is arranged floating in a reactor. The wafer is treated in a reactor of this nature, and it is important for this treatment to be carried out as uniformly as possible. For this purpose, it is proposed to rotate the wafer by allowing the gas flow to emerge perpendicular to the surface of the wafer and then to impart to this gas a component which is tangential with respect to the wafer, thus generating rotation. This tangential component may be generated by the provision of grooves, which may be of spiral or circular design.
摘要:
An electrostatic levitation electrode (10) is divided equally into four parts on a disk-like insulating substrate (4) with separation bands (11a, 11b) between them. A positive voltage and a negative voltage are alternately applied to these four fan-shaped electrodes (10a, 10b, 10c, 10d). A round (13) is formed at the corner of each fan-shaped electrodes (10a, 10b, 10c, 10d), and lead wires (12a, 12b, 12c, 12d) are connected to the outer side surfaces of the fan-shaped electrodes (10a, 10b, 10c, 10d), respectively. Accordingly, damage of the electrodes at the lead portions can be eliminated, maximum attraction force and levitation rigidity can be improved, and a levitated body can be correctly conveyed.
摘要:
A sheet-like base carrying method for carrying a sheet-like base with a sheet-like base carrying device in which a plurality of transfer units having a transfer space to allow the sheet-like base to advance linearly and a plurality of control units having a control space to control the movement of the sheet-like base, are combined in an airtight condition, said sheet-like base carrying method is characterized in that a current of inert gas, the impurity concentration of which is not more than several ppb, is used when the sheet-like base is carried with the sheet-like base carrying device.
摘要:
The apparatus (10) for handling and operating on an article (8) includes a member (12) having a working surface (14) and fluid orifices (18) which pass through the member (12) and terminate in ouitlets (22) on the working surface (14). The member (12) is a web made of a plurality of stacked layers (38). Fluid supplied to the working surface (14) through the orifices (18) act on articles (8) placed in close proximity to the working surface (14).