A method and an apparatus pertaining to recycling and reuse of unwanted light in additive manufacturing can multiplex multiple beams of light including at least one or more beams of light from one or more light sources. The multiple beams of light may be reshaped and blended to provide a first beam of light. A spatial polarization pattern may be applied on the first beam of light to provide a second beam of light. Polarization states of the second beam of light may be split to reflect a third beam of light, which may be reshaped into a fourth beam of light. The fourth beam of light may be introduced as one of the multiple beams of light to result in a fifth beam of light.

Device surfaces are rendered superhydrophobic and/or superoleophobic through microstructures and/or nanostructures that utilize the same base material(s) as the device itself without the need for coatings made from different materials or substances. A medical device includes a portion made from a base material having a surface adapted for contact with biological material, and wherein the surface is modified to become superhydrophobic, superoleophobic, or both, using only the base material, excluding non-material coatings. The surface may be modified using a subtractive process, an additive process, or a combination thereof. The product of the process may form part of an implantable device or a medical instrument, including a medical device or instrument associated with an intraocular procedure. The surface may be modified to include micrometer- or nanometer-sized pillars, posts, pits or cavitations; hierarchical structures having asperities; or posts/pillars with caps having dimensions greater than the diameters of the posts or pillars.

A layer manufacturing apparatus comprising: (a) a main chamber; (b) one or more energy emission devices; (c) one or more work piece supports; (d) a plurality of material delivery devices; wherein the plurality of material delivery devices are connected to one or more spools that are located external of the main chamber.

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, comprising the steps of: providing at least one model of said three-dimensional article, moving a support structure in z-direction at a predetermined speed while rotating said support structure at a predetermined speed, directing a first and second energy beam causing said powder layer to fuse in first and second selected locations according to said model, wherein a first cover area of said first energy beam on said powder layer is arranged at a predetermined minimum distance and non-overlapping from a second cover area of said second energy beam on said powder layer, a trajectory of said first cover area and a trajectory of said second cover area are at least one of overlapping each other, abutting each other or separated to each other when said support structure is rotated a full lap.

Disclosed are a special tooling and method for electron beam welding of a cavity body and a beam tube of a superconducting niobium cavity. The special tooling includes a first clamping device for fixing a flange and a second clamping device for fixing a semi-cavity body, wherein the first clamping device and the second clamping device are fixedly connected. A pressing ring of the first clamping device is disposed around a beam tube of a superconducting niobium cavity and cooperates with a base plate to clamp and fix the flange. The second clamping device includes clamping arms evenly distributed along a circumference of the semi-cavity body, and each clamping arm includes a second pressing plate axially disposed along the beam tube and a pressing block that is disposed on an end portion of the second pressing plate and fixes an edge of the semi-cavity body.

A device for the laser treatment of trousers, including a laser beam generating equipment suitable for emitting the laser beam in any direction within an emission pyramid with an emission axis and two opening angles, and a work station with two mannequins, where each mannequin includes two legs. Each leg defines a longitudinal axis, and the two longitudinal axes of each mannequin define a mannequin plane. Each of the mannequins is oriented towards the equipment so that the emission axis strikes the mannequin plane at an angle of less than 90? and each mannequin has at least one of its legs within the pyramid.

The invention is a method and device for producing three-dimensional objects, having a gradient of properties and multi-material objects, from powders. A method involves the selection of powders of various materials according to diameter, the successive application of layers of powder of a given thickness during the vertical displacement of a piston of a device build chamber with an object to be sintered, and the programmed selective sintering/melting of a given area in the plane of each layer. After sintering, piston is raised, unsintered powder is removed from a layer. The piston is then returned, and a layer of powder having a different diameter and being of a dissimilar material is applied and selectively sintered. When the object-sintering process is finished, the unsintered powder is removed from the build chamber, and the powders are separated according to diameter. The separated powders are returned to feed containers of device for re-use.

A rupture disc device and method of assembly thereof are provided. The rupture disc device has a device body formed so that there are no leakage pathways to the radially outer surface thereof. The rupture disc is welded to the device body so that the weld joint therebetween is not relied upon to provide structural support, and instead strictly acts as a seal. In one form, the weld joint is formed with the weld beam directed axially transverse to thickness of the rupture disc to minimize unwanted variances in the rupture disc burst pressure that otherwise may be created due to the heat generated during weld joint formation.

An electrode for use in instruments capable of measuring the electrophoretic mobility of particles in solution is disclosed. The electrode is comprised of an inexpensive support member, generally made of titanium, onto a flat surface of which has been connected, generally by microwelding, a flat electrically conductive but chemically inert foil member, preferably platinum. A uniform texture can be generated on the exposed surfaces of the electrode by various means including tumbling the electrode with an abrasive. An oxide layer can be generated on the support member by soaking the composite electrode in an appropriate medium, protecting the exposed surface of the support member from fluid contact with the sample solution, while the foil member, unaffected by the oxidation process, is able to contact the sample solution.

A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members using medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed, and a joining end surface formed on an outer surface of the bottom portion, preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member, and bringing the joining end surfaces of the cup and shaft members into abutment against each other. The method also includes welding the cup and shaft members from an outer side of the cup member to an abutment portion between the cup and shaft members in a radial direction of the cup member under a state in which a hollow cavity portion is formed inside the abutment portion.