Abstract: An in-line filter device including a double-walled tube filter assembly, and an upper cap and a lower cap which are held in communication with upper and lower open ends of the filter assembly. The filter assembly has an inner tube and an outer tube which are disposed in radially spaced, and coaxial relation with each other, so as to define an annular space therebetween. One of the inner tube and the annular space is filled with a first pad adapted to coalesce vapor in compressed air passing therethrough, into droplets, while the other of the inner tube and the annular space is filled with a second pad adapted to vaporize residual liquid particles remaining in the compressed air which has passed the first pad. The upper cap has an inlet connected to the upstream side of a compressed air conduit and communicating with the first pad incorporated within the double-walled tube filter assembly. The upper cap further has an outlet connected to the downstream side of the conduit and communicating with the second pad.

Abstract: A hammer including a head core and a handle core which are made of a metallic material and are respectively imbedded in head and handle portions made of a resin material so as to form a generally T-shaped integral body. The head core and the handle core are separated from each other by a suitable distance by a portion of the resin material at which the head and handle portions are connected to each other.

Abstract: A process for metal plating shaped articles, such as cast or molded articles of synthetic resins, includes the steps of (a) diffusing or scattering numerous fine metal particles (or pieces) over the surface and outermost layer of the articles, (b) etching exposed surfaces of the metal particles, (c) performing thereafter metal plating, (d) and thereby solidly combining or joining the plating layer and the articles through the medium of the fine metal particles, whereby the resulting plated articles are extremely eminent in abrasion and shock resistance which is essentially useful for casting and molding patterns or core boxes.