Abstract: A holder is for arranging a foil on the mold surface of a sidewall shell of a vulcanizing mold. The holder has a sleeve which can be pressed into a bore in the sidewall shell and, arranged in the sleeve, a helically-spring-mounted, coaxially movable pin. The pin has a pin head which, in an initial position, projects beyond an end of the sleeve with the force of the spring and on which a foil can be positioned on the mold surface. The pin, in an end position, is movable into the sleeve counter to the force of the spring such that the pin head end remote from the pin is aligned with the end of the sleeve. The pin head forms a clearance fit with the sleeve. The clearance fit is such that the pin is movable in the sleeve but no rubber material can ingress into the sleeve.

Abstract: A holder is for arranging a foil on the mold surface of a sidewall shell of a vulcanizing mold. The holder has a sleeve which can be pressed into a bore in the sidewall shell and, arranged in the sleeve, a helically-spring-mounted, coaxially movable pin. The pin has a pin head which, in an initial position, projects beyond an end of the sleeve with the force of the spring and on which a foil can be positioned on the mold surface. The pin, in an end position, is movable into the sleeve counter to the force of the spring such that the pin head end remote from the pin is aligned with the end of the sleeve. The pin head forms a clearance fit with the sleeve. The clearance fit is such that the pin is movable in the sleeve but no rubber material can ingress into the sleeve.

Abstract: The invention relates to an apparatus for the stabilization of the engine inlet flow in engine static tests. It consists of an arrangement with an air-permeable element (4), which is arranged in an end position situated close to an engine housing (2) and partially enclosing the latter. The air-permeable element is formed with a first air-permeable embodied planar element part (6), that is arranged below the engine housing, which is positioned along a horizontal engine housing axis and parallel to a planar ground (7) in the vertical spacing distance (a), on the surfacial rim side on the longitudinal edges of which, the longitudinal edges being situated along the engine housing axis, there are arranged, laterally downstream of the longitudinal edges, further air-permeable embodied planar element parts (9–12), that are embodied foldable out of a horizontal orientation to the engine housing.

Abstract: The invention relates to an apparatus for the stabilization of the engine inlet flow in engine static tests. It consists of an arrangement with an air-permeable element (4), which is arranged in an end position situated close to an engine housing (2) and partially enclosing the latter. The air-permeable element is formed with a first air-permeable embodied planar element part (6), that is arranged below the engine housing, which is positioned along a horizontal engine housing axis and parallel to a planar ground (7) in the vertical spacing distance (a), on the surfacial rim side on the longitudinal edges of which, the longitudinal edges being situated along the engine housing axis, there are arranged, laterally downstream of the longitudinal edges, further air-permeable embodied planar element parts (9-12), that are embodied foldable out of a horizontal orientation to the engine housing.

Abstract: When a turbine engine is operated near the ground, for example on a stationary static test stand, the ground effect as well as excessive lateral wind effects can lead to instabilities and unacceptable flow conditions of the air flow entering the air intake of the engine. A method for stabilizing or preventing such instabilities in the engine intake air flow involves preventing the generation or full development of a spiral vortex extending between the ground and the engine air intake. Specifically, by positively introducing air into the vortex core of any spiral vortex being formed, the vortex is destroyed and full development of the vortex is prevented. An apparatus for carrying out the method includes an air permeable element arranged between the ground and the engine air intake, such that a flow of air is provided through the air permeable element into the core of any spiral vortex being formed on the surface of the air permeable element.

Abstract: An improved flat roof structive is provided comprising a substructure and a plurality of insulating elements which are loosely positioned on the substructure. A corrugated cover member of a substantially rigid material is positioned on the insulating elements at least in an area adjacent the outer perimeter of the roof. The corrugated cover member has downwardly facing channels which extend in a direction generally from an outer perimeter towards the center of a roof. The channels are open at their ends facing the perimeter of the roof and are closed or sealed at their ends facing toward the center of the roof. A strong air flow will create a vacuum under the cover member in wide areas which reduction is greater than the vacuum on the upper surface of the cover member whereby the cover member is pressed downwardly against the insulating elements. Due to the nearly uniform vacuum under the cover member, i.e.

Abstract: A shielding device to reduce wind velocity, in particular for the deposition of drifting sand or snow, has several plane elements which may be erected next to each other at an approximate right angle to the oncoming direction of the wind. The height of the individual plane elements amounts to at least twice the width of their base, whereas their width decreases as the height increases.

Abstract: A method and apparatus is provided to convey materials in strip form by air pressure floatation. Plenums are provided along the path of floatation to alternately create positive and negative air pressure support areas which induce a wave-like conveying motion to the strip.

Abstract: A rate-of-flow meter, particularly for diagnostic spirometry, comprises a flow tube containing, on diametrically opposite sides, a measuring stud provided with pressure taps and a displacement body facing the stud.