Abstract: An acoustic drum has various implementations for tuning, bracing, attachment, and snare strainer. These implementations are combined in differing configurations of the drum system. Certain aspects of some of the implementations are related to aspects of other of the implementations. For instance, a tuning implementation may use a particular attachment implementation, which in turn may use a certain bracing implementation. Because certain bracing implementations are used, a strainer implementation could be also used if the drum was a snare version. The implementations variously combine to affect performance and/or other esthetic qualities of the acoustic drum.

Abstract: A gas turbine engine includes a tip shroud ring rotatably supported on a last stage blade assembly in a turbine. The tip shroud ring is formed entirely of a fiber reinforced ceramic matrix composite material to provide a very light weight tip shroud ring, but also a very strong ring. The blades include pins extending from the tips, and the tip shroud ring includes holes in which the pins slide. Thus, the tip shroud ring is completely supported by the blade tip pins, and the centrifugal force developed by the rotation of the tip shroud ring does not add to the tensile force developed along the blades. Thus, the maximum rotational speed of the turbine rotor as defined by An2 can be increased. Also, because the blade tips are secured to the tip shroud ring in a circumferential direction, the tip shroud ring acts to dampen the bladed turbine by allowing only the middle of the blade to vibrate.

Abstract: A dryer assembly for drying compressed fluid received from a fluid compressor. The dryer assembly comprises a compressed fluid circuit and a refrigeration circuit associated with the compressed fluid circuit and configured to reduce the temperature of the compressed fluid and to remove condensate from the compressed fluid. The dryer includes means for manipulating the dryer to regulate the rate of heat transfer between the compressed fluid circuit and the refrigeration circuit. A first sensor senses the lowest temperature of the compressed fluid after the compressed fluid has passed the refrigeration circuit and a second sensor senses a reference temperature. A controller is configured to receive the lowest temperature and reference temperature from the sensors and to determine a relative humidity based on the lowest temperature and the reference temperature. The controller controls the means for manipulating the dryer in response to the determined relative humidity.

Abstract: The segments of the vanes of a stator and the blades of a rotor for a gas turbine engine are dampened by utilizing braided wire cable that is affixed to adjacent segments such that each of the wire strands forming the cable is allowed to move relative to each other to dissipate the vibratory energy inflicted on the stator or rotor. The ends of the cable are welded or heated and then tapered to facilitate fitting into a sleeve or collar which in turn is affixed to the adjacent segments by braze, weld or the like.

Abstract: A human machine interface for an air pressure system. The interface may include a processor and a display device, and is operable to display one or more interface screens including a graphical representation of a pressure system and system configuration screens. The interface is also operable to display one or more system parameters and allow user input for configuring and scheduling machine operating sequence, pressure events, operating points, and alarms.

Abstract: A thermal turbo machine is provided for the attachment of guide vanes on its stationary housing with guide vane carriers with a guide vane platform, from which braces extend towards a band that is suspended in a recess in the stationary housing. In particular, part of the axially adjoining heat shield segments form part of the guide vane platform, and the braces are arranged in a V shape. The braces and the guide vane platform furthermore include a first material, and the band of a second material, whereby the first material has a higher coefficient of expansion than the second material. The guide vane carrier according to the invention has the advantage that the radial blade clearance for the guide vanes and at the same time the radial blade clearance for the rotating blades is minimized for different operating conditions of the turbo machine.

Abstract: In an eccentric screw pump having a pump shaft which at one end is in the form of a hollow shaft mounted near a joint head or the like connecting portion and connected thereto, and which is fitted on to the output shaft of a pump drive and is connected thereto, the pump shaft and the output shaft are connected by a force-locking connection. There is also provided a clamping device which produces radial forces and which embraces the drive end of the pump shaft, said end being in the form of a hollow shaft. The clamping device is arranged near the end edge of the cylinder wall at a first support portion.

Abstract: A cable clamp damper utilizing wire cable is looped to define a toroidal configuration and is mounted on a split sleeve. The sleeve's circumference is less than the tube or hardware being supported by the clamp so as to define a small gaps between the halves to allow the individual strands of the cable to move relative to each other to dissipate the energy of vibrations encountered by the tube or hardware. The wire is fitted to base members that are adapted to be mounted to support structure to secure the tube or hardware in place.

Abstract: A rotor blade pair for rotation around an axial centerline is provided which includes a platform, a first and a second airfoil, and a root having a first and second wall. The platform has an inner and an outer radial surface. The first and second airfoils extend out from the outer radial surface of the platform. The root walls extend out from said inner radial surface of the platform, and are integrally connected to one another, forming a hollow between the walls and the inner radial surface. The first wall is substantially aligned with the first airfoil and the second wall is substantially aligned with the second airfoil.

Abstract: A turbine engine rotor assembly disk is provided which includes a forward web, an aft web, a plurality of first stub shafts, and a plurality of second stub shafts. The first and second stub shafts have axial ends and web ends. The stub shafts are attached to the respective forward or aft web, at the web end. The first and second stub shafts are equal in number, similarly spaced around the axial centerline, and attached to one another by fasteners.

Abstract: The invention relates to a dermal application form of prostacyclin derivatives of Formula I ##STR1## wherein R.sub.1 means hydrogen or alkyl of 1-10 carbon atoms,A is a --CH.sub.2 --CH.sub.2 --, trans-CH.dbd.CH-- or --C.ident.C-group,W represents a hydroxymethyl group which is free or functionally modified at the hydroxy group, the OH-group being in the .alpha.- or .beta.-position,X is a CH.sub.2 -group or an oxygen atom,Z is hydrogen or a cyano group,D means a straight-chain or branched, saturated alkylene group of 1-5 carbon atoms,E is a --C.ident.C-linkage or a direct bond,R.sub.2 is a straight- or branched-chain, saturated alkyl group of 1-7 carbon atoms,R.sub.3 is a free or functionally modified hydroxy group,and, if R.sub.1 means a hydrogen atom, containing the salts thereof with physiologically compatible bases, for the treatment of ulcerations caused by arterial occlusive diseases, and other skin disorders.

Abstract: An improved collecting chamber for use with centrifuges for separating particles of different density suspended in a fluid, especially for separating the various fractions in human blood.The chamber is provided with a partition or dam and a plurality of outlet tubes. These tubes are positioned so that they can draw off the various separated components of the blood. The divider prevents the mixing of the fractions after they enter the chamber. By properly regulating the output flow of the lines containing the packed red cells, and the plasma and red cells, the content of the buffy collect line is defined and can be maintained constant over relatively long periods of time without operator intervention.

Abstract: A novel oil well pump for reaching greater depths in wells than prior art structures having reduced down casing sizes wherein the pump comprises a plurality of individual hollow cylindrical chambers each operable in a given part of the pipe casing in conjunction with a pump plunger.

Abstract: A connector for connecting two optical fibres comprising two bunches of six flexible rods having the same diameter as the fibre and assembled together tangentially, in order to center each of the two optical fibres which are to be connected together, by insertion along the axis of each bunch, the two fibres being secured in position by clamping each bunch by a concentric ring.

Abstract: Positioning apparatus is disclosed which positions an object with respect to two predetermined lateral positions. In addition, the object is indexable by the apparatus in a step-by-step manner in an incidental direction with respect to each of the two lateral positions. It includes an endless sprocket chain entrained about two sprocket wheels. The chain carries a first member which is pivotably connected to the chain. A second member is affixed to the first member and is adapted to support the object. The second member is slidably mounted to a movable third member which in turn is guided by guiding means such as rails that guides the third member means in a predetermined aligned relationship with the reaches of the chain. In addition, chain guide means guide the chain along the first and second reaches. Driver means are coupled to one of the sprocket wheels to drive the endless chain.

Abstract: A variable liquid discharge flow rate pump with a discharge float valve the opening of which is controlled according to the discharge pressure and flow rate by a hydraulic power ram actuator with a resiliently biased piston slidable in a cylinder communicating with or forming a container space for transit of liquid from a first cavity in which prevails the discharge pressure to a second cavity in which prevails the inlet pressure, the hydraulic circuit comprising at least one passageway providing a head loss variable according to the discharge flow rate and pressure.