An apparatus for atomization of high temperature melts to from very finely divided powder. The apparatus has a ceramic central melt delivery tube. Melt is introduced at the top and exits at the bottom. At the exit surface a high velocity gas impinges on the melt to atomize the melt into fine particles. The bottom portion of the melt delivery tube has an internal shape to expand the external config...

Low density particles or beads of polyphenylene ether or polyphenylene ether-polystyrene blends are provided by incorporation of a suitable blowing agent such as pentane into the resin mixture, flowed by expansion of the resin particles by exposure temperatures near the Tg of the blend.

A halogenated polyamic acid is sprayed onto a substrate, partially cured, degreased and oxidized to form a partially cured polyimide layer, which is electrolessly plated with a primary metal layer and then final cured into the polyimide layer. Electrolessly or electrolytically applied secondary metal layers are deposited on the primary layer, until the metal layer of a desired thickness is attaine...

An actuating device for a vehicle brake rigging, comprising a service brake and a spring parking brake. The device comprises, apart from a service brake cylinder (1) and piston (2) and a parking brake cylinder (15, 17) and piston (12), a ratchet wheel (8) disposed between the two pistons, non-permanent connection means (6, 7) provided between the ratchet wheel and the service brake piston; and fur...

A biaxially oriented polyester film containing 0.01 to 4 wt%, based on the polyester film, of inorganic particles, the volumetric shape parameter being 0.02 to 0.20, the weight-average particle size being 0.05 to 3 mu m, and the ratio (Dw/Dn) of the weight-average particle size (Dw) and the number-average particle size (Dn) being not more than 1.10 is disclosed. The film of the present invention ...

PURPOSE:To reduce the whole size by cutting the outer circumferential section of an insulating substrate of a printed substrate and using a section projected outer than the insulating substrate a conductor pattern as an outer lead. CONSTITUTION:A printed substrate 3 consists of a metallic foil-clad laminated board in which a metallic foil 2 such as a copper foil is cladded to an insulating substra...

PURPOSE:To enable partial preparation of a large-sized cylindrical unit, such as a container, for measuring magnetism of the living body by providing joining parts crossing the axial direction in a cylindrical unit of an oxide superconductor. CONSTITUTION:A cylindrical unit (length; normally >=1m) of an oxide superconductor, e.g. M-Ba-Cu-O-based compound (M is Sc, Tl, Y or lanthanide-based element...

PURPOSE:To obtain a homogeneous and dense sintered Bi-based super-conductor having a high critical current density even with calcination for a relatively short time by using a Bi-based frit powder for raw powder, forming the powder, calcining and crystallizing the formed body on a silver substrate in the presence of oxygen. CONSTITUTION:The raw powder for a Bi-based superconductor such as the mixe...

PURPOSE:To obtain an oxide superconductor having high bond strength free from deterioration of superconducting characteristics by alternately arranging a high-melting oxide superconductor and a low-melting oxide superconductor and bonding them. CONSTITUTION:Bond structure of oxide superconductor wherein at least two oxide superconductors having different melting points are bonded and a high- melti...

PURPOSE:To provide a structure raising the superconducting critical temp. of a thin film of Bi oxide superconductor by alternately laminating a thin lamellar film of oxide superconductor containing Bi, Cu, and alkaline earths as principal components and a thin lamellar oxide film containing Bi and Ti. CONSTITUTION:A thin lamellar film 21 of oxide superconductor and a thin lamellar oxide film 22 ar...

PURPOSE:To obtain a superconducting thin film having increased superconductive transition temperature by laminating alternately a lamellar oxide superconducting thin film containing Bi, Cu and alkaline earth and a lamellar oxide thin film containing Bi and Nb. CONSTITUTION:An oxide containing at least Bi and another oxide containing at least Cu and alkaline earth (group IIa) are periodically lamin...

PURPOSE:To increase the superconducting transition temp. of a thin film superconductor by alternately laminating a thin Bi-type superconducting film and a thin Bi-W-type oxide film periodically. CONSTITUTION:A thin superconducting film of lamellar oxide, such as Bi-Sr-Ca- Cu-O, having a composition containing, as principal components, Bi-containing oxide, Cu, and alkaline earth elements (group IIa...

The present invention relates to soluble perhydrosiloxane copolymers of the formula [H2SiO]x[HSiO3/2]y wherein the mole fractions x and y total 1. In addition, the present invention relates to the use of these novel copolymers as coating materials, especially for use on electronic devices.

In a gas insulated switchgear equipment device, at least one gas insulated main bus bar is arranged on an attachment surface and a plurality of feeder units each having one end connected to the gas insulated main bus bar and the other end connected to an insulating terminal are arranged along a longitudinal direction of the gas insulated main bus bar, thereby constituting a substation equipment de...

A laser array 12 provides multiple closely spaced light beams 16, 17. These light beams are reflected off of an optical recording medium 64. A faceted prism 90 is used to separate the closely spaced beams sets for detection by an optical detector array 110 and detector circuit. The detector circuit provides data, power, tracking and focus signals.

The epoxy resin mixture, which contains (a) an epoxy resin or a mixture of epoxy resins having an average epoxide content of from 4.4 to 5.0 equivalents/kg and an average epoxide functionality of greater than 2.0, (b) a novolak having a hydroxyl equivalent weight of from 90 to 120, from 0.8 to 0.95 hydroxyl equivalents of component (b) being present in the epoxy resin mixture per epoxide equivalen...

The adhesive properties of polyolefin products are improved by submitting said products to a surface modification process which includes the following steps: A) application of a layer of one or more photosensitive materials selected from: 1) chloroparaffin containing 5 to 80 wt% of chlorine and having an average molecular weight greater than 200; 2) vinyl chloride homopolymers and copolymers, ...

An ultra high-molecular polyethylene sheet which is 100-300 micron thick and is prepd. by press-moulding a starting polyethylene (1) into a sheet. The polyethylene (1) is an ultra-high molecular polyethylene with a viscosity-average molecular wt. lying between 30,000 and 2,000,000 (preferred 800,000-1,500,000). (1) can be a mixt. of one or more high-molecular and low-molecular polyethylene. (1) Pr...