摘要:
A preferred embodiment of the present invention comprises a vitreous quartz pipe or container having a connector including a flange formed from at least one strip or rod-shaped piece of transparent quartz glass which is wound circumferentially around either an inner or outer surface of a portion of the pipe or container and secured to the pipe or container to thereby form a closed-ring flange. The portion of the pipe or container having the attached flange may be an open end of the pipe or container or may be a wall portion where a connector for mounting to fixtures or other fittings may be desired. This type of strip or rod-shaped piece of quartz glass can be made via a conventional pulling technique such that a strip or rod having the appropriate uniform cross-sectional shape is obtained. The prepared strips or rod-shaped pieces are then easily cut with a saw device to appropriate lengths. According to a preferred method of the present invention, a small portion of a strip or rod-shaped piece of transparent quartz glass is made pliable with the direct application of heat. As the portion of the strip or rod-shaped piece of quartz glass becomes pliable, the strip or rod-shaped piece of quartz glass is made to conform to the curvature of the underlying inner or outer pipe or container surface.
摘要:
A conduit used to convey particulate matter in which erosion is substantially diminished. A liner placed within the outer wall of the conduit is of ceramic material which is highly resistant to erosion.
摘要:
An improved joint seal for a clay tile pipe having bell and spigot configurations is provided with unsaturated polyester resin in a foamed, low density state, preferably below about 50 pounds per cubic foot.
摘要:
Disclosed is an assembly or matrix comprising an arrangement of integrally fused tubes forming a series of nonporous, longitudinal parallel passageways therethrough. The matrix is of a low-expansion ceramic material and the passageways therethrough have thin walls; a high proportion of the cross-sectional or frontal area of the matrix is free open area. Also disclosed are methods for making such a matrix from glass tubes that are thermally crystallizable; one method involves longitudinally bundling the tubes with their ends sealed and heating the assembly to soften, expand and fuse the tubes in a heat treatment schedule that also nucleates and thermally crystallizes the matrix to the final ceramic product. Another embodiment involves superimposing a plurality of layers of tubes, one layer above the other in successive parallel planes, with the tubes in each plane being essentially parallel to each other and transverse to the tubes in adjacent layers. The matrix of tubes, each with its ends sealed, is heated to soften, expand and fuse the tubes. The sealed ends are opened and a plurality of such matrices are assembled into an annular structure, each matrix being separated from adjacent matrices by a wedge-shaped member.
摘要:
A glass polymer composite and a method of preparing same consisting of crushed glass with a mixture of sizes to obtain minimum void volume impregnated with monomer which is polymerized in situ. Certain construction materials such as sewer pipe and exterior wall facings made from this material are illustrative.
UTILIZED IN THE PREPARATION OF BICYCLIC SULFONYLUREA DERIVATIVES BY REACTION WITH AN ALKYL METAL COMPOUND, ARE DESCRIBED. THE FINAL PRODUCTS ARE USEFUL AS HYPOGLYCEMIC AGENTS.
摘要:
A pipe coupling adapted for coupling the ends of two axially aligned glass pipes. The coupling embodies a tubular sealing gasket positioned over the exterior end portions of the pipes, an elastomeric sleeve placed exteriorly over the gasket to contact the gasket and the pipes, and a metallic constricting band positioned around the sleeve. The band clamps the sleeve and the gasket tightly to the end portions of the aligned pipes.
摘要:
Castable compositions including soluble or colloidal silicates as binding agent. The composition is cast as an aqueous slurry in a mold coated with a reagent for precipitating the silicate, to prevent penetration of silicates into the mold surface. A lightweight, expandable, refractory tube having excellent resistance to thermal shock is produced.