86results about How to "Compensation for shrinkage" patented technology

The invention relates to a filter comprising membranes made of hollow fibers in which the hollow fibers are arranged as a bundle in a tubular housing. The housing comprises an end cap on each of its ends, whereby the hollow fiber bundle is placed between the ends of the housing. The ends of the hollow fiber bundle each comprise a support ring that surrounds the same and are cast inside said support ring. The support rings are displaceably mounted in the housing in order to compensate for, among other things, axial contractions of the hollow fiber bundle occurring during heat sterilization.

In a method for producing a molded article having a resin part, the resin part is injection-molded to an opening of a main body part and the molded article has an excellent air-tightness between the resin part and the main body part. A foam sealant is attached to a peripheral portion around the opening of the main body part. Attached to the main body part is a retainer made of the same kind of resin as injected resin and adapted to keep the foam sealant compressed in its thickness direction. The main body part is placed within a mold so that the retainer is exposed inside a cavity of the mold. A molten resin is injected into the cavity of the mold. The injected resin and the retainer are integrated into the resin part.

Methods of producing a composite block intended for the production of a dental prosthesis including the following steps: a) impregnating a porous support with a liquid resin and b) curing the liquid resin impregnating the support are provided. In such methods of producing a composite block intended for the production of a dental prosthesis, a volume of liquid resin that is greater than the volume of the open pores of the support by at least 2% is caused to penetrate into the support and to cure therein, said volumes being measured at a temperature of 20° C. and at a pressure of 1 bar.

Disclosed herein is an apparatus for generating hydrogen by steam reforming. The apparatus comprises: a casing having provided in the central portion thereof a combustion section for producing high-temperature reaction heat; a flame guide provided such that it forms the outer wall of the combustion section while a space is provided outside thereof; a plurality of catalytic tubes arranged concentrically with respect to the combustion section in the space outside the flame guide; a feed supply manifold disposed at one side of the inside of the casing so as to distribute a feed supplied from the outside of the apparatus to each of the catalytic tubes; a reformate manifold connected with one end of each of the catalytic tubes so as to discharge a reformate obtained by the reforming reaction to the outside of the apparatus; and a support member which consists of an inner ring plate formed at one side of the inside of the casing and an outer ring plate disposed concentrically around the outer circumference of the inner ring plate and which has formed at the boundary between the inner and outer ring plates tube holes into which one end of each of the catalytic tubes is inserted. In the hydrogen generating apparatus, the structure of the support member supporting the plurality of catalytic tubes is simply divided into the inner ring plate and the outer ring plate, such that the expansion and shrinkage of the support member by thermal stress can be efficiently compensated for. As a result, deformation and breakdown of the support member caused by thermal stress can be prevented, thus improving the overall durability and stability of the hydrogen generating apparatus.