A method for inserting a flexible, oversized preform into an opening in a hollow mold is disclosed. The oversized preform is initially formed so as to have a configuration similar to that of the interior surfaces of the mold. The cross sectional size of the preform relative to the mold is temporarily reduced by forming an inwardly projecting furrow in the preform so that the preform may be inserted into the mold. An assembly for inserting the preform into the mold and reducing the cross sectiona...

An adhesive resin composition comprising (a) an expoxy resin, (b) a curing agent therefor, and (c) an aluminum orthophosphate-zinc compound rust inhibiting pigment. When applied to the assembly of car body components, the composition assures improved bond strength and corrosion resistance.

A knife sharpener comprising a sharpening device preferably of the type involving upwardly extending pairs of overlapping, resiliently flexible fingers or strips forming opposed abrasive sharpening faces, provided with a pair of shields respectively operative between closed positions in which they cover and protecting the sharpening device and open positions in which they respectively provide a handhold for the device and protect the hand of the user when it is on the handhold, and preferably pr...

A method of lining pipes, in which a flexible tube or hose having a surface diameter corresponding to the inner diameter of the pipe is radially contracted before being placed in the pipe, the tube being held in the contracted state by wires or bands of mainly non-metallic material which are arranged around the periphery of the tube, said wires or bands, after the tube has been inserted into the pipe, being cut off or pulled off in order to release their hold on the tube.

A device for abrading and finishing excess cured filler material from a bullnose outside cornerbead connected between immediately adjacent sheets of drywall. The device includes an elongated rigid body having a generally concave-shaped central longitudinal portion which preferably replaceably receives a sheet of somewhat compressible open fibrous adhesive material which is preferably substantially coextensive with, and arcuately formed to match the bullnose cornerbead convex contour, by the cent...

A blade sharpening tool includes a main body, a first grinding unit, a second grinding unit, and a protective jacket. The first grinding unit is directed toward a direction in line with the axial direction of the main body. Thus, when the first grinding unit is pressed to move on the blade of the gardening shears, the first grinding unit is movable in the direction the same as that of the blade, so that the first grinding unit is operated easily and quickly to facilitate the user operating the b...

This invention relates to a corrosion-resistant coating capable of being lied to various substrates, e.g., particularly metal and plastic surfaces, as a single coat characterized as having a high-gloss, good adhesion and a high degree of flexibility. The corrosion inhibiting composition comprises an epoxide resin containing an effective amount of a corrosion-inhibiting pigment system consisting essentially of critical amounts of at least one zinc phosphate, zinc molybdate and at least one zinc s...

An epoxy resin composition for encapsulating a semiconductor, which is free from halogen and antimony and has excellent soldering crack resistance and high-temperature storage life without lowering the flame-retardancy, and which comprises as essential components (A) an epoxy resin, (B) a phenol resin curing agent, (C) a curing accelerator, (D) an inorganic filler and (E) a red phosphorus-based flame-retardant, wherein the ratio of (a) the number of epoxy groups of the epoxy resin to (b) the num...

A flame-retardant resin composition which comprises (A) 100 parts by weight of an unhalogenated epoxy resin having at least two epoxy groups in one molecule, (B) 20 to 205 parts by weight of a maleimide compound having at least one maleimido group in one molecule, (C) 20 to 65 parts by weight of a curing agent having an amino group and (D) a phosphorus compound in a proportion of 0.5 to 4.5 parts by weight in terms of phosphorus element per 100 parts by weight of a total of the components (A), (...

Flame-resistantly formulated, flowable, latently reactive, phenolically curable epoxy-resin moulding compounds for the encapsulation of electronic components containing the following components: an epoxy-resin component obtained from a solvent-free reaction resin mixture of polyepoxy resin and polyisocyanate resin having a molar ratio of the epoxy groups to the isocyanate groups of 1.1 to 4 at a reaction temperature of up to 220.degree. C. in the presence of a reaction accelerator in a concentra...