Abstract: A turbine shroud segment attachment with a casing (1) and several shroud segments (2) arranged in the casing (1), wherein the individual shroud segments (2) are located in the casing (1) with a circumferential clearance (3) between the individual shroud segments (2), in that the clearance (3) is reduced to zero at a given temperature difference between the casing (1) and the shroud segments (2), and in that the shroud segments (2) are retained on the casing (1) by way of an elastically deformable locating arrangement.
Abstract: In a method of detecting and eliminating foreign bodies in tobacco, a flow of tobacco advances first through a preparation zone where it is gathered into a continuous ribbon of tobacco filler, then through a forming station at which the filler is used to fashion a continuous cigarette rod, and finally through a cutter device that divides the rod into cigarette sticks; the advancing flow is directed at a given point through a detection device and exposed to electromagnetic radiation of microwave frequency emitted and received in such a way as to generate output signals reflecting any variations in moisture content along the flow of tobacco, caused by the inclusion of foreign bodies and associated with given portions of the flow each coinciding with a singly identifiable cigarette stick.
Abstract: The exchange, removal or addition, as applicable, of media and/or power between the individual shafts of an engine, between individual engines and between the engines and the aircraft provides for additional degrees of freedom, enabling engine parameters to be addressed in terms of a reduction or avoidance of negative resonances or beats. It also provides an ability to alter thrust from engines of a multi-engined aircraft to reduce rudder trim.
Abstract: A gas turbine combustion chamber includes combustion chamber tiles 3 attached to a supporting structure 6 of the gas turbine combustion chamber, with each tile possessing at least one dilution air hole 4 which is flush with a dilution air hole of the supporting structure 6, wherein a diameter of the dilution air hole of the supporting structure 6 is considerably larger than a diameter 14 of the dilution air hole 4 of the combustion chamber tile 3.
Abstract: In a machine tool with a spindle capable of motion along at least three axes x, y, and z, the position of the spindle is checked by a device that operates utilizing electromagnetic signals sent out by four emitters, located externally of the machine tool, and picked up by a receiver mounted directly to the spindle. The signals are fed into a master control unit and processed by circuits in such a way as to produce an output that can be used to verify and if necessary correct the position of the spindle on the three axes X, Y, and Z.
Abstract: For material reduction, a fan blade made of solid material for a gas-turbine engine is provided in the area of the blade tip with at least one cavity (5) extending from the face of the blade tip. Thus, apart from the aspect of weight saving, the vibration amplitudes and the centrifugal forces can be reduced considerably and the natural vibration behavior improved in a simple manner, ultimately increasing mechanical strength.
Abstract: A roller rocker mounting mechanism for an internal combustion engine valve actuating mechanism includes a first rocker stand having a first locating boss and a second rocker stand having a second locating boss. An indexing link has a first portion separably attachable to the first locating boss and a second portion separably attachable to the second locating boss to connect the first rocker stand and the second rocker stand in a manner that prevents rotation of either rocker stand when the rocker stands are attached to the cylinder head.
Abstract: A rigid pack of substantially parallelepiped appearance for tobacco products appears as a container (5) with an open top end (6), surmounted by a lid (7) hinged to the container (5) and rotatable between positions in which the top end (6) is open and closed. The pack (1) presents four lateral faces (17, 18, 19), and two end faces (12, 16) disposed mutually parallel and perpendicular to the lateral faces (17, 18, 19); at least one of the six faces (12, 16, 17, 18, 19) presents a raised portion (22) with an outwardly directed convex profile obtained by plastically deforming at least one panel (43, 44) of a blank (31) before the blank is folded around the tobacco products to fashion the pack (1).
October 8, 2002
Date of Patent:
April 11, 2006
Fiorenzo Draghetti, Franco Magnoni, Mario Spatafora
Abstract: The invention relates to a sports brace comprising an elastic woven or knitted fabric, which for a sport of the kind that is performed using the arm or hand can be secured to the applicable arm or wrist (2) of the person using it by means of a closure (4). In order to provide that the sports brace (3) has better relief of the player's hitting hand or arm, compared to known braces, the invention proposes providing a plurality of weights (15), distributed over the surface, which act counter to the force of the ball hitting the racket used. To that end, the weights (15) or partial masses (18) of the weights (15) are movable within limits, so that their distribution over the brace also assures effectiveness at various impact angles of the ball or given a different posture of the hitting hand (1).
Abstract: A disk brake caliper mounting bracket is attachable to an axle tube to mount a brake caliper to the axle tube with a desired positioning and alignment. The bracket includes an axle tube mounting portion and a brake caliper mounting portion. The axle tube mounting portion includes a circular flange for mounting between the axle tube and a wheel mount to accurately position the bracket with respect to the axle tube. The brake caliper mounting portion is positioned at an angle to correspond with a camber of the wheel mount such that when the brake caliper is mounted to the brake caliper mounting portion, the brake caliper is accurately positioned and aligned with a disk brake rotor. The axle tube mounting portion and the brake caliper mounting portion can be integral with one another or separate components attached together.
Abstract: A fluid-flow machine (turbomachine) includes at least one rotor equipped with blades and at least one stator equipped with vanes, the rotor being supported in a casing by means of a rotating shaft. A form of annulus is provided whose cross-sectional area in a stage consisting of at least one rotor and one stator results in a rotor-stator contraction ratio QRS which satisfies the equation: [0.2+(KT?0.45)0.1]<QRS<3.0, where KT is the total-stage contraction.
Abstract: This invention relates to a fuel injection system for a staged combustion chamber (1) of a gas turbine aero-engine, in which a certain quantity of fuel is permanently supplied to the pilot burner(s) (3) and in which fuel is apportioned to the main burner(s) (4) only at higher engine performance, whereby a staging valve unit (7) which variably splits the total fuel mass flow (WF) to the pilot burners (3) and to the main burners (4) is provided downstream of a control valve unit (6) which controls the entire fuel mass flow, with both valve units being actuated by an engine control unit (8) and with the actuation of the staging valve unit (7) being accomplished on the basis of the desired engine performance, characterized in that the engine performance is described by way of a staging parameter (SP) reflecting the load of the gas turbine combustion chamber (1) and actuating the staging control unit (7) according to a switching line, in that the staging parameter (SP) is derived from a functional relationship, in
Abstract: An electronic safety system for the detection of a shaft failure and for the interruption of the energy supply to the shaft includes at least one measuring light guide (13) which is firmly routed in the shaft longitudinal direction, co-rotates with the shaft (1) and is connected to a light source (18) on a light inlet side (14). In the event of a shaft failure, the measuring light guide will break to diminish light transmission therethrough, with the absence of light on a light outlet side (15) being detected by an optical sensor (19) and being used, via evaluation and control electronics (20, 21), as a signal for the shut-off of the further energy supply at a fuel shut-off valve (22). The measuring light guide is fixed to a measuring sleeve (4) attached at both ends to the shaft.
Abstract: A double roller cam follower includes a longitudinal beam having a first end and a second end, a cam roller rotationally mounted on the beam for engaging a cam lobe and a valve stem roller rotationally mounted on the second end of the beam for engaging a valve stem. The cam roller includes a stepped outer circumference having a larger diameter at its sides to engage the cam lobe and a smaller diameter positioned centrally between the flanking larger diameters to provide clearance between the cam roller and the valve stem roller.
Abstract: A machine tool consists in a pair of slide ways set apart one from another and extending parallel with a longitudinal axis, a machining station between the slide ways, presenting a first zone and a second zone adjacent one to the other, and a traveling gantry set in motion along the slide ways and carrying a machining head positionable in the first and second zones. Installed alongside at least one of the slide ways and containing a supply of tools attachable to the machining head is a magazine equipped with a first changer element positioned to coincide with the first zone of the station, and a second changer element positioned to coincide with the second zone, so that whichever of the two zones the machining head happens to occupy at any given moment, the tool currently in use can be replaced with a tool from the magazine by the relative changer element with minimal loss of time.
Abstract: A lean premix burner for a gas turbine having at least one fuel supply ring 4 fitted with primary fuel nozzles 8 and additional secondary fuel nozzles 9, and a method of operation for this lean premix burner.
Abstract: Containers are transferred from a first conveyor operating at a first height to a second conveyor operating at a second height by a rotary unit equipped with a plurality of grippers designed to take up and support each successive container by the neck. The grippers are carried by respective slides mounted to corresponding vertical guide elements making up the main frame of the unit, on which they are made to move up and down cyclically by a first roller following a first track that extends around a fixed C-shaped tubular element, and by a second roller running on a second track presented by the top surface of a sector rail placed with the concave side directed toward the lateral opening in the C-shaped tubular element. The tubular element is easily replaced in the event of a size changeover.
Abstract: A rigid type wrapper (1) with a hinged lid (13) is fashioned from a flat diecut blank (42) presenting a treated face and an untreated face and comprising a main portion (45) destined to form the container (11) and the lid (13) of the wrapper (1), also an appendage (50), destined to provide a stiffening frame (23), appearing as a first portion (51) and two connecting arms (52) terminating at the opposite ends in first and second precreased fold lines (53, 54) along which the arms (52) are hinged respectively to the main portion (45) and to the first portion (51) of the blank.