A butterfly valve which may enhance corrosion resistance or acid resistance with keeping its strength, have light weight and realize mass production, and method of manufacturing the same. are disclosed. The butterfly valve comprises a body in which an inserting space is formed and a disk inserted into the inserting space of the body, wherein fluid flow is opened or closed in response to rotation of the disk. Here, the disk includes a disk body formed of a metal, and at least one plastic layer formed on the disk body.

A screw system including a plurality of segmented blades. Each blade segment of the plurality of blade segments including a mounting portion and a vane portion. The mounting portion, having a helical length, for removably attaching the blade segment. The vane portion extending from the mounting portion along the helical length thereof. The vane portion having a front surface that is not parallel to a back surface from the mounting portion to a tip of the blade segment, along the helical length.

The present invention provides a medical apparatus with an IC tag and a method for manufacturing the same. Provided are a method for manufacturing a medical apparatus and a medical apparatus manufactured by the same, the method including: irradiating a portion of a surface of a medical apparatus made of a metal with a laser beam to roughen the surface and form a roughened section; depositing a synthetic resin in a molten state or a solution state to the portion of the medical apparatus including the roughened section to form a base section of synthetic resin; placing an IC tag on the base section; and depositing a synthetic resin in a molten state or a solution state onto the base section and the IC tag to form a covering section of the synthetic resin that covers the base section of the synthetic resin and the IC tag, thereby encapsulating the IC tag inside a synthetic resin part including the base section and the covering section.

A method of producing an exercise weight structure comprises mixing a particulate material with a binder material and molding the resulting mixture to an appropriate shape. An outer skin for the exercise weight structure is firstly formed of a resilient material, and forms a mold into which an inner weight section or body is molded or cast. The inner weight section and the outer skin are both formed of recycled material and include a common binder material.

A method of producing an exercise weight structure comprises mixing a particulate material with a binder material and molding the resulting mixture to an appropriate shape. An outer skin for the exercise weight structure is firstly formed of a resilient material, and forms a mold into which an inner weight section or body is molded or cast. The inner weight section and the outer skin are both formed of recycled material and include a common binder material.

In one example, a housing for an electronic device may be disclosed which may include a first multi-layer structure. The first multi-layer structure may include a first layer and a second layer formed on the first layer. Each of the first layer and the second layer may include a plurality of protruding features and a plurality of recessing features on an edge of the first layer and the second layer. At least one of the plurality of recessing features of one layer may intersect at least one of the plurality of protruding features of other layer.

A reinforcing article includes a porous substrate layer separating a plurality of parallel first continuous fiber elements spaced apart from each other and extending along a first direction from a plurality of parallel second continuous fiber elements spaced apart from each other and extending along a different direction. Each first and second continuous fiber elements include a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin.

There is disclosed a method of manufacturing a fan blade for a gas turbine engine, the method comprising: providing a root insert comprising quasi-isotropic short fibre reinforced resin, providing a first sub-laminate of a fibre-reinforcement pre-form for the fan blade on a first mould surface, placing the root insert on the first sub-laminate at a position corresponding to a root of the fan blade, providing a second sub-laminate of the pre-form over the root insert and the first-sub-laminate, so that the root insert is at an intermediate position between the first and second sub-laminates; and applying heat and pressure to form the pre-form.

This patent describes a new, simple, and low-cost method to produce aromatic thermosetting copolyester (ATSP) based polymer matrix composites. For this method, the ATSP based composites are directly produced from the blended mixtures of the ATSP oligomer powders with the composite fillers through a high temperature and high pressure curing process. In addition, the fully cured ATSP composite laminates can be bonded together to form thicker multi-material composites. The characterization showed that these ATSP based composites are fully condensed, they have excellent tribological performance (low friction and low wear rate), and they have excellent thermal stability, indicating utility in high performance bearing applications, structural materials, and as an ablative composite material.

A partially molded substrate and a partial molding apparatus and a method thereof, which cover and mold each of one or more conductors formed on the substrate with the insulator to prevent the sizes of the substrate from being increased due to molding, thereby efficiently preventing high voltage between the conductors on the substrate from being applied, and thereby preventing interference around the conductor.