55results about How to "Increased dimensional tolerances" patented technology

A stenting ring made of a tube or rolled-up sheet that has a characteristic wall thickness. The ring defines a lumen and is equipped with at least one marker made of a material different from that of the ring. The ring is expansible from a radially compact disposition with a relatively small circumference to a radially expanded disposition with a relatively large circumference. The ring exhibits in the compact disposition a serpentine arrangement of succeeding struts lying in alternate opposite directions to the longitudinal axis of the lumen. The marker has a thickness in the radial direction of the ring that is less than the characteristic wall thickness, and has a width that extends circumferentially around an arc of the ring. The marker is attached to the ring at a zone located at a point intermediate in the extent of said arc. The marker overlaps with a respective one of said struts, at each end of its circumferential arc, when the ring is in the compact disposition, the respective struts moving away from each other, and from the marker, when the ring expands towards said radially expanded disposition.

A synthetic resin guide for a transmission device comprises an integrally molded, synthetic resin guide body having a shoe with a front surface for sliding contact with a chain, and a support on its back surface, the support having a longitudinal slot, formed between two opposed walls, for receiving a reinforcing plate. Both the guide body and the plate having mounting holes that are coaxial when the plate is incorporated into the guide body. A pressing member, integrally formed on one of the walls of the guide body, includes an eccentric head which uniformly presses against opposite parts of the edge of an opening of a positioning hole in the reinforcing plate.

A ball-and-socket joint has a pivot pin accommodated rotatably and tiltably with a spherical joint area in a bearing shell. The bearing shell is in turn arranged in the recess of a joint housing. A closing ring fixes the bearing shell in the joint housing in the axial longitudinal direction of the pivot pin by at least one surface pair. Corresponding to a first solution variant, an intermediate element made of an elastic material may be arranged between the corresponding contact surfaces of the surface pair on the bearing shell and the closing ring. As an alternative an insert element may be arranged between the outer contour of the bearing shell and the bottom area of the recess, wherein at least one intermediate element made of an elastic material is arranged between the outer surface of the insert element and the corresponding inner surface of the recess. The requirement imposed on the dimensional accuracy of the ball-and-socket joint components can be substantially reduced due to these solution variants, which contributes to a reduction of the manufacturing costs.

A uniform cross-section and ribbed thermoplastic compressor valve which can be used as a discharge valve for a compressor and has internal rib structure and uniform wall thickness. The valve member can be made of high-performance polymeric resin such as polyimide. The valve member comprises a base member, an annular wall member, a central member protruding from the base member, and a plurality of internal wall members. The internal wall members provide the internal rib structure which strengthens the valve member and allows for light-weight construction. Preferably, there are six internal wall members and the central member has a cavity.

A stenting ring made of a tube or rolled-up sheet that has a characteristic wall thickness. The ring defines a lumen and is equipped with at least one marker made of a material different from that of the ring. The ring is expansible from a radially compact disposition with a relatively small circumference to a radially expanded disposition with a relatively large circumference. The ring exhibits in the compact disposition a serpentine arrangement of succeeding struts lying in alternate opposite directions to the longitudinal axis of the lumen. The marker has a thickness in the radial direction of the ring that is less than the characteristic wall thickness, and has a width that extends circumferentially around an arc of the ring. The marker is attached to the ring at a zone located at a point intermediate in the extent of said arc. The marker overlaps with a respective one of said struts, at each end of its circumferential arc, when the ring is in the compact disposition, the respective struts moving away from each other, and from the marker, when the ring expands towards said radially expanded disposition.

A method of manufacturing a filled aerofoil component (100) for a gas turbine engine (10) comprises using a capping panel (200) to cover a pocket (310) in a pocketed aerofoil body (300). During manufacture, a pre-formed filler insert (400) is provided to support the capping panel (200) in the correct position. This ensures that the outer surface of the capping panel (200) is located as accurately as possible. This means that the capping panel (200) can be made to be as thin as possible, which in turn reduces weight and material wastage. The pre-formed filler insert (400) provides a lightweight core for the finished aerofoil component in use.

A rotary valve seal member that is held in sliding contact with a valve element that rotates, turns, or slides within a valve housing of a rotary valve and is capable of providing a secure seal as the valve element operates. The seal member has the structure of a three-dimensional ring having a cross-section composed of an oval portion, aligned with a normal line to the outside of the valve element and having a bulge at the end that protrudes and presses against the outer surface of the valve element, and a rectangular portion, into which the oval portion is integrated in a state in which the oval portion is aligned with the normal line to the outside of the valve element, that is retained within an annular groove with the outer side of the rectangular portion in contact with the wall of the annular groove.

An outer rotor motor has a bearing housing with reduced machining and material costs, can be assembled with high accuracy, and has favorable durability. A bearing is attached to an inner circumferential surface of a housing main body that has been formed in a cylindrical shape by plastic deformation caused by press molding a metal matrix. At least one protruding surface is formed by plastic deformation so as to protrude further outward than the housing main body, and the stator core is attached to the outer circumference-side of the at least one protruding surface.

An x-ray tube casing is provided which includes a central frame having internal passages to supply a cooling fluid directly to the casing without the need for an external dedicated heat exchanger. The cooling fluid flowing through the passages in the easing can thermally contact the dielectric coolant within the casing to cool the tube coolant during operation of the x-ray tube. The casing is formed in an additive manufacturing process to allow for tight tolerances with regard to the structure for the casing and the internal passages to reduce the size and weight of the casing. The casing can additionally be formed from a metal matrix including a metal with high x-ray attenuation and a filler metal. The metal matrix eliminates the need for a separate x-ray attenuation layer within the casing, further reducing the size, number of parts and assembly complexity of the casing.

The invention relates to a hydraulic damper, in particular for the suspension system of a motor vehicle, comprising a tube filled with working fluid; a piston assembly slidably positioned inside the tube; a fluid compensation chamber located outside of the tube, and a base valve assembly at the end of the tube for controlling the flow of working fluid between the tube and the compensation chamber. A compression valve module added between the piston assembly and the base valve assembly allows the damping to increase during extremely fast compression strokes without modification of the other damper components, affecting neither tuning options nor performance in a normal operating range of piston velocities.

The invention refers to a solenoid with a coil that can be supplied with current, an armature supported movably in an armature housing that can be moved by a magnetic field resulting from supplying the coil with current, a magnetic yoke, an armature spring and an adjustment pin that can be inserted in the magnetic yoke, wherein the armature spring is supported, on the one hand, on the adjustment spring, and, on the other hand, on the armature, and the characteristic line of the solenoid can be adjusted through penetration depth of the adjustment pin in the magnetic yoke or the solenoid.

A guide element for passing one or more pipes, cables or the like through a wall includes an interposition element between the one or more pipes and the edge of the passage aperture, and an annular clamping flange on one or both sides of the wall. The flange is substantially concentric with the aperture and it is coupled to the wall along an annular perimetric strip surrounding the aperture. The interposition element is an elastic wedging and / or urging element between one or more pipes and the edge of the aperture, and the ring or flange clamps the interposition element in a wedged and / or urged condition.

A hollow-core fiber with a single layer of robust anti-resonant optical arches is disclosed, which is designed and made of infrared soft glass and allows the transmission of mid- to long-infrared wavelengths (1-15 microns). Each curved arch is solidly attached at two locations on the outer solid region surface and together the arches define the core diameter. The thickness and spacing between the arches are selected to minimize the fiber transmission loss <1 dB / m at wavelengths in the mid- to long-infrared where the infrared soft glass has high absorption >30 dB / m. A hollow-core preform with anti-resonant arches is made by extrusion of infrared soft glasses through a die specifically designed to produce the hollow-core fiber with anti-resonant arches.

A surgical clamp includes a support frame clamp member, a retraction shaft clamp member and a handle linked to the support frame clamp member and the retraction shaft clamp member for moving the clamp members between loosened and tightened positions. The handle includes a cam, and the handle / cam is unitarily formed by metal injection molding. The handle includes relatively uniform thickness throughout to better accept the shrinkage induced by the metal injection molding process. The base used for a bottom position of the cam is adjustable and spring loaded, to better support a wider range of manufacturing tolerances on the cam as well as the other components of the clamp without over stressing the metal injection molded handle during use. The handle includes a gripping portion with a planar portion inducing alignment of the clamping force as desired for best operation of the clamp.

A cable for the ultra high-speed communication of high-frequency signals. The cable includes a longitudinal conductor and an insulator sheath at least partially covering the longitudinal conductor. The cable further includes an inner conductive sheath disposed about an outer periphery of the insulator sheath and an outer insulator jacket disposed about an outer periphery of the inner conductive sheath. The insulator sheath is manufactured from a high-purity fluorinated ethylene propylene.

The invention provides a hot die forging and pressing process for a sun wheel of an automobile automatic gearbox. The process includes the following steps of (1) blank making, (2) spheroidizing annealing, (3) carburizing, (4) quenching and tempering, (5) accurate grinding of inner holes, (6) counter bore grinding, (7) end face grinding, (8) accurate grinding of outer circles, (9) gear honing and (10) polishing and anti-rust oil coating. The hot die forging and pressing process is used for machining and molding the sun wheel of the automobile automatic gearbox, the obtained sun wheel is high in precision, the cutting time is short, the machining cost is low, environment friendliness is achieved, energy is saved, and the allowance for machining is little.

Creased paper board packages are unstacked, separated and conveyed. Discs are loaded into dimensionally controlled trays using relatively fine alignment, placement and assembly tolerances. Subsequently, the disc-loaded trays are assembled onto less dimensionally controlled tray-holding panels on creases paper boards using relatively less stringent tolerances. Booklets are inserted in pockets in panels adjacent the disc-holding panels, and the paper board packages are closed.

A method of preparing an air bag module for final process positioning includes the step of providing an air bag module, the air bag module having unformed locating features for guiding the air bag module into a mountable position on a vehicle component. The method next includes the step of shaping the locating features to a predetermined size. The method may also include the step of providing a vehicle support, such as a steering wheel, with unformed locating features for guiding the air bag module into a mountable position on the vehicle support. The method may further include shaping the unformed locating features of the vehicle support to a predetermined size. The method ensures that the air bag module will consistently fit with the vehicle support and reduce an accumulation of dimensional tolerances in the components of the air bag module and vehicle support.

A closure system for a drinking bottle or other container is disclosed. The closure system comprises a bottle and a bottle closure. The bottle closure, in turn, comprises among its components a cap interface manipulated directly by the user's hand, a platform that translates vertically in relation to the cap interface, and a flexible annular stopper body directly manipulated by the platform. When the bottle closure is placed on the open bottle neck and the cap interface is pushed downward toward the bottom of the bottle, a lever-based mechanism forces opposite upward movement of the platform. The platform squeezes the stopper body, and at the end of the downward pushing motion, the system is locked in a static position. The squeezed stopper body forms a liquid-tight seal with the bottle, while holding potential energy via elastic deformation. From this sealed position, the cap interface may be radially twisted relative to the bottle, releasing the locked platform and the stopper's potential energy. As the stopper gains its original shape, simultaneously the liquid-tight seal is removed, the cap interface moves upward, and the platform moves downward. The loosened bottle closure may now be separated from the bottle.

The invention discloses a continuous processing method of a nickel-titanium shape memory alloy square thin wire material. The continuous processing method of the nickel-titanium shape memory alloy square thin wire material comprises the following steps of: step 1) performing surface treatment on a [Phi]3 mm nickel-titanium alloy thin round wire blank; step 2) performing square hot die drawing andhot roller drawing on the nickel-titanium alloy thin round wire blank after surface treatment in step 1) to obtain a nickel-titanium alloy square thin wire material; and step 3) performing square colddie drawing and online straightening heat treatment on the nickel-titanium alloy square thin wire material in step 2) to obtain the nickel-titanium shape memory alloy square thin wire material. The nickel-titanium shape memory alloy square thin wire material obtained by the invention has high strength, good dimensional tolerance and surface quality, large single plate heavy, and high production efficiency, which completely meets the requirements of the nickel-titanium shape memory alloy wire material for medical use, has high production efficiency, and is easy to realize large-scale production.

A guide element for passing one or more pipes, cables or the like through a wall includes an interposition element between the one or more pipes and the edge of the passage aperture, and an annular clamping flange on one or both sides of the wall. The flange is substantially concentric with the aperture and it is coupled to the wall along an annular perimetric strip surrounding the aperture. The interposition element is an elastic wedging and / or urging element between one or more pipes and the edge of the aperture, and the ring or flange clamps the interposition element in a wedged and / or urged condition.

Injectors for injection of lubrication oil into the cylinder of a large slow-running two-stroke engine, especially marine diesel engine, proved better uniform performance the when using hardened surfaces for the plain bearing in which the valve member slides. Also, hardened surfaces for valve seats at the nozzle was an improvement.

The invention discloses a reducing production method of deepwater submerged arc welding large-caliber steel pipes. In order to overcome the defects of reduction of the compression strength and incapability of satisfying the bruising pressure performance requirements of deepwater pipelines in a traditional JCOE process for producing thick-wall steel pipes, the method comprises such process steps as edge milling, edge pre-bending, JCO molding, joint closing and prewelding, inner welding, outer welding, mechanical reducing, quality checking, water pressure test, quality checking and chamfering, wherein the mechanical reducing is to perform the annular compression for the whole lengths of the steel pipes by a steel pipe sizing press. The method has the following beneficial effects: the steel pipe sizing press is used for annularly compressing the full lengths of the steel pipes, so that the steel pipes are locally deformed, the diameters of the pipes are decreased, and the size tolerances of the steel pipes are improved; because of the mechanical reducing, the residual stress is reduced, the straightness of the steel pipes is improved, the cold molding process of the steel pipes is optimized, and the compression yield strength and the bruising pressure of the steel pipes are improved; and all technical parameters of the steel pipes accord with the deepwater pipeline requirements through strict technical control.

A method for manufacturing a part layer-upon-layer using Additive Manufacturing technology suitable for structural applications. The method includes selectively depositing at least a first type filament and a second type filament, wherein the second type filament differs from the first type filament at least in the cross-sectional dimension.