An electric wire conductor having both flexibility and a space-saving property, a covered electric wire, and a wiring harness containing such an electric wire conductor. The electric wire conductor contains a plurality of elemental wires, and has a flat portion in which a cross-section intersecting an axial direction of the wire strand has a flat shape. In the cross-section of the flat portion, a vacancy ratio defined as a ratio of vacancies not occupied by the elemental wires is 17% or higher. Further, a covered electric wire contains the electric wire conductor and an insulator covering the electric wire conductor. Furthermore, a wiring harness contains the covered electric wire.

A microfabricated laminated conductor, comprising at least two flat metallic conductors held together parallel by their edges by a first dielectric material anchor, such that there exists a gap of between several nanometers and several micrometers between most of the at least two flat metallic conductors.

Coaxial video push-cables are disclosed. One embodiment includes a central conductor and a multi-dielectric stack of multiple concentric tubular layers disposed around the central conductor having one or more structural layers and one or more impedance tuning layers where the thickness of materials of each layer are selected to provide a pre-defined elastic modulus and electromagnetic impedance, an electromagnetic shielding layer, and a jacket enclosing the shielding layer, multi-dielectric stack layers, and central conductor.

Provided is a Cu-based alloy powder that is suitable for a process involving rapid melting and rapid solidification and that can provide a shaped object superior in characteristics. The powder is composed of a Cu-based alloy, which contains an element M being one or more elements selected from Cr, Fe, Ni, Zr, and Nb: 0.1% by mass or more and 10.0% by mass or less, Si: more than 0% by mass and 0.20% by mass or less, P: more than 0% by mass and 0.10% by mass or less, and S: more than 0% by mass and 0.10% by mass or less, the balance being Cu and inevitable impurities. This powder has a ratio (D50/TD) of the average particle diameter D50 (?m) thereof to the tap density TD (Mg/m.sup.3) is 0.2?10.sup.?5.Math.m.sup.4/Mg or more and 20?10.sup.?5.Math.m.sup.4/Mg or less, and has a sphericity of 0.80 or more and 0.95 or less.

Clamps and methods disclosed herein can help to provide efficient electrical communication between a first conductor and a second conductor. An example clamp includes a main housing portion that includes a first surface, a second surface, a body, and an insert, the insert providing electrical communication between the first surface and the second surface; a clamp member; and a fastener.

A coaxial cable includes an inner conductor, an insulation covering the inner conductor, an outer conductor covering the insulation, and a sheath covering the outer conductor. The inner conductor is a compressed conductor including a central element wire and multiple peripheral element wires surrounding the central element wire. The inner conductor has a compressibility of 23.0% or more and 35.0% or less in percentage. The compressibility is calculated from a sectional area S1 and the sectional area S2 of the compressed conductor by Compressibility=[1?S2/S1]. The sectional area S1 is calculated from the outside diameter D of the central element wire and the total number n of the central and peripheral element wires by S1=n???0.25?D.sup.2. The outside diameter of the insulation is 1.25 mm or more and less than 1.75 mm.

A paste composition including first copper particles, wherein the first copper particles are formed by covering copper particles serving as a base material with at least one type of compound selected from the group consisting of an amine compound (a) and a carboxylic acid amine salt (b), and a total content of the amine compound (a) and the carboxylic acid amine salt (b) detected in the paste composition is less than 1 mass % of an entire amount of the paste composition.

Copper particles are provided that each include a core particle made of copper and a coating layer that coats the surface of the core particle, wherein the coating layer is made of a copper salt of an aliphatic organic acid. It is also preferable that the copper particles have an infrared absorption peak in a range of 1504 to 1514 cm.sup.?1 and no infrared absorption peak in a range of 1584 to 1596 cm.sup.?1. It is also preferable that, in thermogravimetric analysis of the copper particles, the temperature at which the ratio of the mass loss value to the mass loss value at 500? C. reaches 10% is from 150? C. to 220? C. A method is also provided for producing copper particles, the method including bringing core particles made of copper into contact with a solution containing a copper salt of an aliphatic organic acid to thereby coat the surface of the core particles.

Provided is a heating cable having high flex resistance and flexibility. More particularly, the present invention relates to a heating cable having both an excellent mechanical property such as flex resistance and high flexibility which are in a trade-off relationship, and capable of facilitating control of heat to be generated.

The present invention is a sliding contact material having a composition of Cu of 6.0% by mass or more and 9.0% by mass or less, Ni of 0.1% by mass or more and 2.0% by mass or less, an additive element M of 0.1% by mass or more and 0.8% by mass or less, and the balance being Ag. The additive element M is at least one element selected from the group consisting of Sm, La and Zr. The present sliding contact material has a material structure in which dispersion particles containing an intermetallic compound containing at least both Ni and an additive element M are dispersed in an Ag alloy matrix. It is required that the ratio of a Ni content (% by mass) and a content of an additive element M (% by mass) (K.sub.Ni/K.sub.M) in the dispersion particles falls within a predetermined range. The present invention is an Ag alloy-based sliding contact material more excellent also in abrasion resistance than conventional ones, and a material adaptable to higher rotation numbers of micromotors.