Abstract: A coolable wall element for a gas turbine, having a base body with a first surface subjectable to a hot gas, second surface arranged opposite of the first surface, and first seat for housing edges of an impingement plate. The wall element has an impingement plate partly inserted into the first seat located at a distance and adjacent to the second surface. A coolable wall element with extended life time is provided with the impingement plate which is removably attached to the base body having a snap-in connection with a bendable retention tab extending from the rest of the impingement plate to a free end of the retention tab, wherein the base body has a second seat for the free end of said tab, the second seat blocks the moving of the impingement plate relative to the main body when the bendable retention tab is released.

Abstract: A ring segment for a gas turbine has a base body having a first surface subjectable to hot gas, second surface arranged opposite of the first surface and fastening elements extending from the second surface. The ring segment extends in the axial direction and in an azimuthal direction of the gas turbine. The first and second surfaces are curved in the azimuthal direction and straight along the axial direction. The fastening elements have at least two rows of hooks, each extends in the azimuthal direction, wherein each hook has an outwardly directed surface and an inwardly directed surface which are curved in the second direction. At the outer sections of the ring segment the distances (R3) are smaller than that (R4) in the middle section. The distances (R5, R6) between the outwardly directed surfaces of the corresponding row of hooks and the machine axis is constant along the azimuthal direction.

Abstract: A coolable wall element for a gas turbine, having a base body with a first surface subjectable to a hot gas, second surface arranged opposite of the first surface, and first seat for housing edges of an impingement plate. The wall element has an impingement plate partly inserted into the first seat located at a distance and adjacent to the second surface. A coolable wall element with extended life time is provided with the impingement plate which is removably attached to the base body having a snap-in connection with a bendable retention tab extending from the rest of the impingement plate to a free end of the retention tab, wherein the base body has a second seat for the free end of said tab, the second seat blocks the moving of the impingement plate relative to the main body when the bendable retention tab is released.

Abstract: A sealing interface for a component in a turbine machine, wherein a plug is mechanically affixed within an entrance passage of an aperture. The plug is secured in place within the entrance passage through deformation of an inner end of the plug to cause the plug to mechanically engage a groove formed adjacent the entrance passage.

Abstract: Introducing a plurality of geometrically shaped members (27) into a cooling passage (16) of a gas turbine airfoil (10) will effectively reduce the cross-sectional flow area while simultaneously retaining a sufficiently thick external contour desired for proper gas path aerodynamic behavior. Small cooling sub-passages (18a, 18b) formed around the geometric members will create a preferentially higher coolant flow rate and heat transfer coefficient at the cooled surface (14) when compared to the interior of the cavity. The geometric shapes may be metal or ceramic spheres retained in the cooling cavity by a retaining structure such as a screen grid (30) or perforated plate (32). The openings (34) in the retaining structure may be unevenly distributed to preferentially allow more coolant to enter the cavity proximate the cooled walls. The size/shape of the geometrically shaped members may be varied to achieve a desired heat transfer coefficient along the cooled wall surface (17).

Abstract: A sealing interface for a component in a turbine machine, wherein a plug is mechanically affixed within an entrance passage of an aperture. The plug is secured in place within the entrance passage through deformation of an inner end of the plug to cause the plug to mechanically engage a groove formed adjacent the entrance passage.

Abstract: Introducing a plurality of geometrically shaped members (27) into a cooling passage (16) of a gas turbine airfoil (10) will effectively reduce the cross-sectional flow area while simultaneously retaining a sufficiently thick external contour desired for proper gas path aerodynamic behavior. Small cooling sub-passages (18a, 18b) formed around the geometric members will create a preferentially higher coolant flow rate and heat transfer coefficient at the cooled surface (14) when compared to the interior of the cavity. The geometric shapes may be metal or ceramic spheres retained in the cooling cavity by a retaining structure such as a screen grid (30) or perforated plate (32). The openings (34) in the retaining structure may be unevenly distributed to preferentially allow more coolant to enter the cavity proximate the cooled walls. The size/shape of the geometrically shaped members may be varied to achieve a desired heat transfer coefficient along the cooled wall surface (17).

Abstract: A support including a plate having a top surface and a receiving hole, a lift element having a contacting end disposed through the receiving hole, a sensor disposed in a bore in the contacting end of the lift element, and a support member adjacent the top surface.

Abstract: A method of disposing a wafer on a support member protruding from a surface. The method includes supporting the wafer in a first position defined by a lift extending through the surface and manipulating the surface to place the wafer on the support member.

Abstract: A method of exhausting vapors emanating from a surface. The method includes enclosing the surface and dividing the enclosed area into a stagnant region adjacent the surface and an interior region in communication with the stagnant region. The method also includes applying a suction to the interior region and admitting air into the interior region.

Abstract: A support including a plate having a top surface and a receiving hole, a lift element having a contacting end disposed through the receiving hole, a sensor disposed in a bore in the contacting end of the lift element, and a support member adjacent the top surface.

Abstract: A vapor control apparatus including an endless rim, a stagnation plate and a cover having an exhaust port. The endless rim has a first edge engaging the cover, a second edge opposite the first edge, an interior region and an exterior region defined by the rim and the cover, and a flow passage from the interior region to the exterior region adjacent the cover. The exhaust port is in fluid communication with the interior region and the second edge is seatable on a wafer support. A stagnation plate is disposed in the interior region, defining a stagnant region intermediate the stagnation plate and the surface, and defining at least one flow path in fluid communication with the stagnant region and the interior region.

Abstract: A wafer support including a plate having a top surface and a lift element opening extending trough said plate. The support also includes a support member adjacent the top surface having a proximal end, a distal end and a bore from the proximal to the distal end and a vacuum source in communication with the bore. The support furthermore includes a lift element having a contacting end disposed through the lift element opening and a drive coupled to at least one of the plate and the lift element.

Abstract: Apparatuses are provided for thermally conditioning material. The apparatus includes a plate having a top surface for receiving material, a temperature controller connected to control the temperature of the top surface of the plate and the temperature controller is controlled by a computer controller. In a preferred embodiment, three tubular shaped ceramic support members, each containing a bore, are provided to support the material and a negative pressure source is provided in fluid communication with the bores. In addition, three lift elements having contacting ends are slidably disposed through receiving holes in the thermal conditioning plate and aligned to support the material on the contacting ends.

Abstract: A reminder card or bill rack, or the like, which has a frame and a pair of side-by-side vertically aligned series of card pockets on the frame. Between the two series of pockets is a common vertical column of indicia on the frame dividing a given period of time, such as a month, into sub-increments, such as weeks, in alignment with the respective pockets. The frame has a housing at the top thereof within which is mounted a pair of roller members, one for each vertical series of pockets. Indicia is provided on each of the rollers, such as the twelve months of the year seriatim about the periphery of the rollers. A window is provided in the housing for each roller so as to observe the indicia thereon. Each roller is independently rotatable and has a handle connected thereto and exposed exteriorly of the housing for manual manipulation by a user.