Abstract: A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.

Abstract: A foldable tension spring mattress, wherein a vertical pressure is converted into a tension by means of a wrapping blanket; the tension acts on the periphery of a spring net and is converted into a pulling force acting on coil springs and penetrating springs; and then the pulling force is uniformly dispersed to each of the coil springs, so that the local overstressing of the coil springs and the penetrating springs is avoided, thereby preventing the spring net and the penetrating springs from being arched and sunken. As a result, the mattress may keep good elasticity all the time, which further increases the comfort level of the spring mattress. The present solution may alleviate the plastic deformation of the coil springs to further increase the comfort level of the spring mattress and improve the elasticity and durability of the spring mattress.

Abstract: A system comprising a trolley which comprises a platform and wheels attached beneath the platform, an air intake of an aircraft engine, where the air intake rests on the platform so as to have its narrowest part at the top and its widest part at the bottom, and an inflatable protection item in the form of a closed envelope which is placed around the widest part of the air intake. A system of this kind makes it possible to protect the air intake from collisions that it might experience during movement of the trolley, and to increase safety by avoiding collisions between operators and the air intake.

Abstract: A method for profiling blades of an axial turbomachine includes preparing a geometric model of a blade profile; determining an oscillation mode of the geometric model; calculating a time profile of a position-dependent disruptive pressure in a channel between two adjacent blade profiles over an oscillation period of the oscillation belonging to the oscillation mode, changing the geometric model and determining a different oscillation mode for the modified geometric model; and determining the damping of the oscillation using the disruptive pressure profile calculated previously and accepting the modified geometric model for the case that the damping of the oscillation turns out to be greater than calculated, otherwise repeating the last two steps with another modified geometric model.

Abstract: A method for fixing a plurality of workpieces via a hollow rivet element with an open setting end and a closed closing end. The method includes passing the rivet element through mutually aligned openings of the workpieces. The method also includes introducing a fluid, in particular air, under high pressure from the setting end of the rivet element in a hollow space of the rivet element. The method also includes plastically deforming and setting of the rivet element by the fluid at the closed closing end of the rivet element.

Abstract: A method of induction welding a first thermoplastic composite (TPC) to a second thermoplastic composite (TPC) includes inductively heating a weld interface area between the first TPC and the second TPC, and cooling a surface of the first TPC opposite the weld interface area while inductively heating the weld interface area.

Abstract: A boxed header is formed from an exterior side plate, an interior side plate, a top plate, a bottom plate, a first end plate and a second end plate. The top plate is connected to the exterior side plate and the interior side plate with welded joints that are formed at the juncture between J-beveled top edges on the exterior side plate and the interior side plate that support the weight of the top plate during assembly. Once the top plate has been secured, the boxed header can be rotated and the bottom plate is attached to the exterior side plate and the interior side plate with welded joints that are formed at the juncture between J-beveled bottom edges on the exterior side plate and the interior side plate that support the weight of the bottom plate during assembly.

Abstract: A process for fabricating a unitized structure comprises creating a multilayer structure by applying a flame-retardant resin to a first layer and stacking, on the first layer, an intermediate layer comprising a honeycomb structure. Further, a second layer is stacked on the intermediate layer and the flame-retardant resin is applied to the second layer. The multilayer structure is then heated to a desired temperature and a pressure is applied about the multilayer structure for a predetermined process time. Moreover, the flame-retardant resin is prevented from entering spaces of the honeycomb structure. After elapse of the predetermined process time, the pressure is released, creating the unitized structure.

Abstract: The disclosure relates to a method for checking a rivet, the rivet being transported from a rivet filling station along a transporting path in the direction of a riveting machine during operation of the riveting machine. The method is characterized in that the rivet is measured on the transporting path for determining a rivet geometry of the rivet. The disclosure similarly relates to a corresponding measuring arrangement for checking a rivet.

Abstract: A method of forming an arch member comprising an arch member body and an arch member coupling integral with the body, comprising: providing a substrate comprising a resilient material; and removing a portion of the substrate to form the arch member. The arch member body including a cross-sectional geometry that varies along a length of the body. Also a method of designing an orthodontic appliance comprising: providing a proposed specification of the orthodontic appliance, wherein the orthodontic appliance comprises an arch member comprising an arch member body and an arch member coupling integral with the body, and a set of anchors, providing a first digital image representing a first dental arrangement associated with the orthodontic appliance; deriving a target digital image representing a target dental arrangement; revising the proposed specification of the orthodontic appliance based in part on the target digital image; and forming the orthodontic appliance based on the revised proposed specification.

Abstract: A method of installing a seal in a bore of a component includes, among other things, slidably orienting the component in a support fixture. The method includes securing a base plate to the component. The method includes arranging the seal onto a pusher. The method also includes inserting the pusher into a hole in the base plate. The method further includes installing a hub onto the base plate and over the pusher. The method further includes rotating a rod relative to the hub to advance the pusher and seat the seal in the bore.

Abstract: A cover layer (23) of a fleece material for an innerspring unit (20) comprising a plurality of pocketed springs (29) is manufactured by supplying at least two longitudinal fleece webs (24, 25), which extend substantially parallel in a longitudinal direction and are spaced from one another, and repeatedly attaching a transverse fleece web (26, 27), which extends between the longitudinal fleece webs (24, 25) in a direction substantially perpendicular to the longitudinal direction, to the longitudinal fleece webs (24, 25). The transverse fleece web segments (26, 27) are attached to the longitudinal fleece webs (24, 25) such that they form together with the longitudinal fleece webs (24, 25) a framelike structure (21) serving as the cover layer (23).

Abstract: A multi jack tensioner including: a body portion formed to engage an elongate fastening member or integrally formed therewith; a load bearing member for applying force to a workpiece to be fastened and arranged for location about said fastening member adjacent the body portion; a pressure chamber between the load bearing member and the body portion arranged to displace the body portion from the load bearing member in response to hydraulic pressure; and a plurality of jack bolts extending between the body portion and the load bearing member for further displacing the body portion from the load bearing member; wherein application of hydraulic pressure to the hydraulic chamber displaces the body portion from the load bearing member for tensioning said fastening member and whereby subsequent tensioning of the fastening member is applied by operation of the jack bolts.

Abstract: A multi jack tensioner for applying tension to a fastener, the tensioner comprising: a body having at least one section, including a first body section formed to engage an elongate fastening member or integrally formed therewith; a load bearing member for applying force to a workpiece to be fastened and arranged for location about said fastening member adjacent the body; a plurality of pressure chambers between the load bearing member and the body arranged to displace the at least one body section axially relative to the load bearing member in response to hydraulic pressure; and a plurality of jack bolts extending between the body section and the load bearing member for further displacing the first body section from the load bearing member; wherein application of hydraulic pressure to one or more of the plurality of pressure chambers displaces the first body section from the load bearing member thereby tensioning said fastening member and whereby subsequent tensioning of the fastening member is applied by

Abstract: A method for the manufacture of a gear component includes, in a soft machining process, introducing a preliminary toothing 3 with a machining allowance 7 that is fixed relative to a final toothing 4 into a blank such that a semi-finished part 2 is produced. The method also includes, in a fine machining process, removing the machining allowance 7 and producing the final toothing 4 of the toothed component. The machining allowance 7 is removed in a single-stage hobbing method by a grinding tool 1, wherein the grinding tool 1 removes the machining allowance completely in a single stroke movement H.

Abstract: A road grading blade teeth removal apparatus operable to provide removal of teeth from a road grader blade. The apparatus of the present invention includes a frame having an upper end and a lower end. The upper end of the frame has a pair of upper spring mounts secured thereto on opposing sides of the frame. The upper spring mounts have springs suspended downward therefrom and are operably coupled to a pair of lower spring mounts that are axially aligned with each of the upper springs mounts on opposing sides of the frame. A center force plate is secured intermediate the lower spring mounts and has a movement member superposed thereon. The movement member is further operably coupled to a cross member proximate the top of the frame and is configured to leverage thereagainst to move the center force plate downward. A pin assembly is located underneath the mounting plate.

Abstract: The disclosure provides a food product adapter for a vertical grill. The vertical grill is standardly configured to heat or cook a round, square, or rectangular patty approximately the size of a hamburger. The food product adapter enables heating or cooking of other shapes in a standard hamburger slot, such as sticks, tubes, rolls, and other food product having a relatively narrow width and a relatively long length, such as a hot dog, fish stick, or the like.

Abstract: The present disclosure relates to generating a modified gear flank geometry on an active surface of the workpiece by generation grinding or honing. In at least one example, the modified gear flank geometry of the workpiece may be generated on the active surface of the workpiece by variation of an engagement depth of a tool into the workpiece in dependence on an angle of rotation of the tool. Additionally, the workpiece may comprise a cylindrical spur gear, a helical gear, a spherical gear, or a conical gear. Further, in one or more examples, the modified gear flank geometry of the workpiece includes at least one of a profile waviness or a defined periodic flank waviness.

Abstract: A method of manufacturing a heat exchanger array that includes stacking a plurality of heat exchanger units in an aligned configuration with respective first ports of the plurality of heat exchanger units aligned. The method can further include generating heat in the first coupling elements at the same time and at a temperature sufficient to generate a first plurality of respective couplings between adjacent sheets of adjacent heat exchanger units about adjacent first ports and without a coupling being generated between the first and second sheets of a given heat exchanger unit.

Abstract: A twin-vaned nozzle ring for a turbine nozzle of a turbocharger nozzle ring is made by assembling the nozzle ring from three separately formed parts. A center part includes a first ring of circumferentially spaced first vanes and a second ring of circumferentially spaced second vanes, the first and second rings being axially spaced and integrally joined to each other. The first vanes are circumferentially offset from the second vanes, and exits from the first vane passages are radially aligned with and circumferentially interleaved with exits from the second vane passages. First and second side walls are provided as separate parts. Finally, the first side wall is joined to a distal or outer face of the first ring, and the second side wall is joined to a distal face of the second ring to complete the assembly.