Abstract: Methods for servicing shock struts are provided. In various embodiments, a method for servicing a shock strut may comprise deflating the shock strut; compressing the shock strut until the shock strut is in a fully compressed position; and charging the shock strut with a liquid until a pressure of the liquid decreases a volume of a residual air located inside of the shock strut. In various embodiments, charging the shock strut with liquid under pressure may reduce the volume of trapped air inside of the shock strut to a negligible volume, eliminating the servicing variations.

Abstract: The invention relates to a process for producing a large transmission gearwheel (1; 31; 36) consisting of a plurality of individual components, said process comprising the successive steps of: providing the individual components, which include at least one hub (2; 32; 37), a disc wheel (3, 4; 18, 19; 22; 24; 27; 33, 34; 38, 39) and a toothed ring (5; 20; 21; 23; 26; 35; 40) produced from case-hardened steel; at least partially mechanically soft machining the individual components; joining the individual components using a beam welding process; case hardening the individual components which have been joined to one another, and hard machining at least the toothed ring (5; 20; 21; 23; 26; 35; 40). The invention furthermore relates to a large transmission gearwheel produced by such a process.

Abstract: A method of constructing a cured composite assembly includes positioning a composite assembly within a bonding tool, wherein the composite assembly comprises an uncured composite spar and a skin and performing a curing cycle on the composite assembly to simultaneously cure the uncured composite spar and bond the skin to the cured composite spar.

Abstract: A fin manufacturing apparatus includes an inter-row slit processing device having upper and lower blades with blade edges extending in a feed direction of a thin metal plate that serves as a material of a fin. The upper and lower blades are engaged with each other to form a perforated slit between rows on the fin. Each blade has a recess where the blade edge is partially recessed toward a ridge. Recess depth dimensions are smaller than a lapping amount of the blades when the blades are engaged with each other. At least one of the blades is slidable in a longitudinal direction of the blade edge to allow the recesses to be moved from overlapping positions to adjacent positions as viewed along a direction orthogonal to the longitudinal direction of the blade edges when the blades are engaged with each other over the lapping amount.

Abstract: A method for producing a rotating turbine blade and tuning the natural frequencies of the blade is disclosed that changes the second effective beam length of the blade thereby changing the separation between the first natural frequency and the second natural frequency of the blade.

Abstract: An endoprosthesis fabricated from multi-phase ferrous steel. Endoprostheses can include a variety of devices such as staples, orthodontic wires, heart valves, filter devices, and stents, many of which devices are diametrically expandable devices. Multi-phase ferrous steels include dual phase steels and transformation induced plasticity steels (TRIP steels).

Abstract: A method of starting a turbomachine, performed by an electronic unit, the turbomachine including a gas turbine engine including at least one rotor and a starter to drive the rotor in rotation, the method including: receiving an order to start the turbomachine, and executing in response to receiving the order to start: a primary acceleration during which the starter is operated to increase speed of rotation of the rotor; a thermal homogenization during which the starter is operated to keep the speed of rotation of the rotor constant or to decrease it until a predetermined condition is satisfied; after the predetermined condition is true, a secondary acceleration in which the starter is operated to increase the speed of rotation of the rotor; and an ignition in which ignition of the engine is ordered.

Abstract: A roller bearing replacement device with a housing that is sealed off is provided that has a sluice which can be coupled on a roller hearth furnace through which access to a roller bearing of the roller hearth furnace that is to be demounted is possible, and at least one roller bearing handling device which is arranged in a moveable manner inside the housing and can at least partly be moved out of the housing through the sluice. The housing has a cooling chamber designed for cooling of demounted roller bearings in which the at least one roller bearing handling device is constructed so that it can be moved at least between a replacement position and a cooling position.

Abstract: An eco-friendly buoy includes a foam including a cylindrical accommodation space in the interior of the foam, and coupling grooves at predetermined intervals at an outer surface circumference of the foam in order to fasten the foam to fixing members through wire; and a protective layer formed on an entire outer surface of the foam and protecting the foam from damage by waves or wind. The eco-friendly buoy is manufactured from eco-friendly expanded polypropylene and expanded styrene and has a protective layer on an outer surface thereof, thereby being protected from damage by waves or wind. In addition, the eco-friendly buoy may be used for a long time, thus reducing maintenance costs.

Abstract: An apparatus for automatically stacking a fuel cell stack includes a component pick-up unit configured to simultaneously pick up one separating plate component accommodated in a first magazine and one membrane-electrode assembly (MEA) sheet component accommodated in a second magazine, and load the components onto a start end of a component transfer route of a conveyor; a component examining unit installed at an upper side of the component transfer route of the conveyor, a defective component extracting unit installed at a rear side of the component examining unit, a component stacking unit installed at a distal end of the component transfer route of the conveyor, and a component pressurizing unit installed at an upper side of a transfer route of the stack guide.

Abstract: Improved methods for preparing highly porous mesh media and loading functional particles into the media are described herein. The highly porous media can be used as supports for catalyst materials for a variety of applications, such as desulfurization. Pre-manufactured catalyst can be loaded into the sintered open media. Thus, the contamination issues associated wetlay paper making and pre-oxidation, the deactivation issues associated with the sintering and pre-oxidation steps, and the corrosion issues associated with the catalyst formation step can be avoided. The methods described herein result in the formation of highly porous media with functional particles immobilized inside.

Abstract: A method of manufacturing an external timepiece component, including: a metallic base made of a first material including titanium and/or a first titanium alloy; at least one metallic cover plate made of a second material, this second material including a second metal selected from among gold and platinum and palladium, and/or a second alloy including at least gold or platinum or palladium, this at least one cover plate being of a thickness greater than or equal to 0.5 millimeters; the at least one cover plate is welded to the base to form a bimetallic blank; and the bimetallic blank is shaped and/or machined to give the structural component its final form.

Abstract: Prosthesis devices can include sockets having adjustable features. In one example, a socket includes one or more panels that can move outwardly or inwardly relative to a receptacle portion of the socket. The panels can be moved by tightening a tensioning line.

Abstract: A fastener for use in connection with a tubular boss has a shaft with at least one rib along the length thereof and at least one thread segment extending at least partially around the shaft. The shaft is inserted into the boss in first position, and rotated to a second position wherein the at least one thread segment engages at least one column formed in the tubular boss. The shaft can be integrally formed with a first molded part to be fastened to a second molded part with an integrally formed tubular boss. Various locking features for locking the shaft in the boss are also disclosed.

Abstract: A method of making a rub strip includes resin transfer molding an arcuate composite structure. The resin transfer molding step includes inserting a honeycomb core into a mold cavity having an arcuate base so that the honeycomb core assumes an arcuate shape. The resin transfer molding step further includes directing liquid resin into the mold cavity to form the composite structure comprising the liquid resin and the honeycomb core, and curing the liquid resin for a sufficient period of time. The resin transfer molding step further includes removing the composite structure from the mold. The method further includes repeating the resin transfer molding step until a sufficient number of arcuate composite structures are produced. The method further includes coupling a plurality of the arcuate composite structures together to form the rub strip.

Abstract: A system and method are provided to automate the assembly of a wing panel, such as utilized by commercial aircraft. In the context of a system, a tacking cell is provided that is configured to tack one or more stringers to a skin plank. The system also includes a riveting cell configured to receive a tacked plank from the tacking cell and to rivet the one or more stringers to the skin plank. The system also includes a splicing cell configured to receive a plurality of riveted planks from the riveting cell and to attach one or more splice stringers to the plurality of riveted planks. Further, the system includes a side of body cell configured to receive a spliced panel from the splicing cell and to attach a side of body chord thereto to produce a wing panel.

Abstract: A telescopic shaft includes a hollow outer shaft, an inner shaft spline-fitted to the outer shaft, a resin coating provided on splines on at least one of the outer and inner shafts, and can be extended and contracted in an axial direction. A method for manufacturing the telescopic shaft includes press-fitting the inner shaft into the outer shaft and sliding one of the outer and inner shafts relative to the other of the outer and inner shafts by reciprocating the one shaft in the axial direction. In the sliding, a frequency according to a sliding speed at which the one shaft is slid relative to the other shaft is set to be lower than a predetermined value at the start of sliding, and the frequency is increased in a continuous or stepwise manner when a sliding load of the one shaft to the other shaft is reduced.

Abstract: A method of manufacturing a light guide plate includes steps of cutting a light guide plate base material with a frame-shaped die into a die-cut plate 50 including side surfaces each having a rectangular shape and performing thermal-imprinting process. In thermal-imprinting process, a processing surface 60a of a plate surface of a heated processing board 60 is pressed against one of the side surfaces 52 of the die-cut plate 50 to thermally imprint a pattern of the processing surface 60a of the processing board 60 on the one of the side surfaces 52 of the die-cut plate 50. The processing surface 60a having a shape that is recessed more at a portion thereof opposite a middle of a long dimension of the one of the side surfaces 52 than a portion thereof opposite ends of the long dimension of the one of the side surfaces 52 is pressed against the side surface 52.

Abstract: Pipe joint, which comprises at least one first pipe section (2), and a sleeve part 5, into which the butt end part of the pipe section (2) is disposed in such a way that the sleeve part (5) extends a distance on top of the pipe section (2) from the butt end of the pipe section that is inside the sleeve, and heating means (7), such as resistance wires. For forming the joint, a joint component (3) is arranged between the outer surface (16) of at least one pipe section (2) and the inside surface (15) of the sleeve part (5), which joint component is configured to form a joint with the sleeve part (5) when the joint area is warmed with the heating means (7), and that a collar (6) is arranged on the pipe section (2), which collar comprises a detent surface (10) for the joint component (3). The invention also relates to a method for forming a pipe joint.

Abstract: A fitting for a pipe is disclosed. It includes a main body for internally accommodating the pipe, fastening means able to be tightened to the main body, a deformable annular sealing gasket and a blocking ring nut which can be positioned within the fitting between the main body and the fastening means, respectively, to ensure the sealing of, and block in firm position, the pipe, at least when the fastening means are tightened to the main body, the blocking ring nut being elastically deformable in radial direction. The fitting also has means for retaining in a widened position at least the mouth section of the annular sealing gasket, with an inner diameter greater than the outer diameter of the pipe.