摘要:
In accordance with one aspect of the present invention, a material for an element of a power transmission-absorption assembly and the method of making such material is disclosed. The material has a pre-selected channel configuration to permit flow of a cooling medium thereacross or therethrough. Another embodiment of the invention discloses a material and method for slotting the material and situating the material on a blocker ring to facilitate providing a plurality of spaced grooves having an open end which is substantially larger than a closed end. The material may comprises a raised rib or chamfer which facilitates controlling the fluid at an area of engagement between the material and a mating frictional member (not shown).
摘要:
A method and apparatus for strengthening a writing instrument (11) such as a crayon with a self-adhesive wrap (14) having a writing zone (20) printed thereon is disclosed. The wrap (14) is applied to the writing instrument (11) to strengthen the writing instrument against breakage and to display the writing zone (20) to permit a child to personalize and identify his or her writing instruments.
摘要:
A thin, tacky, non-pourable film of incompatible in situ-expandable thermoplastic particles and thermosettable matrix resin that contains an essentially uniform density and thickness across the breadth of the film. The in situ-expandable mass is not pourable yet can be easily dispensed in a uniform manner within a mold and thereafter expanded to the dimensions of the mold. Composites and reinforced compositions, as well as methods of molding, are disclosed.
摘要:
A method of manufacturing angiographic catheters comprises providing a length of elastomeric tube of a predetermined outer diameter and braiding multiple strands of wire wrapping about its exterior. A bonding agent is applied to the wire wrapping in circumferentially extending bands to bond the strands to each other. Thereafter, the wire wrapping is ground away at predetermined spaced locations along the length of the elastomeric tube to provide a series of wire wrapped sections joined by non-wrapped sections with each of the wire wrapped sections having at least the ends thereof enclosed by at least portions of the circumferentially extending bands of bonding agent. An elastomer layer is located over both the wire wrapped sections and the non-wrapped sections throughout the length thereof. Subsequently, the coated length is severed into pieces with the pieces each constituting a wire wrapped section that forms a catheter body and a non-wrapped section joined to at least one end thereof to constitute a flexible catheter tip.
摘要:
A ceramic composite is provided comprising ceramic fibers and microparticles bound together as a porous matrix with a ceramic binder. The ceramic composite is particularly useful for transporting cryogenic fluids.
摘要:
In this resilient multi layered member, there are provided as laminated together: a surface skin layer, formed of PVC resin powder made into a gel, on the outside side of the resilient multi layered member; a foam material layer, formed from foamed PVC resin powder, the outer side of which is adhered to the inner side of the surface skin layer; a cushion material layer, the outer side of which is adhered to the inner side of the foam material layer; and a substantially stiff core material layer, the outer side of which is adhered to the inner side of the cushion material layer, on the inside side of the resilient multi layered member. There may be further included an adhesive layer by means of which the outer side of the cushion material layer is adhered to the inner side of the foam material layer. The cushion material layer may be formed from urethane foam, or from non woven fabric, which may be a felt material, and may have a density greater than about 200 grams per square meter. This density may more particularly be between about 260 grams per square meter and about 300 grams per square meter. Alternatively, the cushion material layer may be formed from compressed urethane material, which may be compressed by a factor of from about 50% to about 80%, and may have a density of between about 0.05 grams per cubic centimeter and about 0.10 grams per cubic centimeter.
摘要:
An air cushion shoe sole which is preferably blow molded of elastomeric material and has at least one cavity which in cross-section is substantially rectilinear. The cavity has a number of depressions and each cavity has an air valve for introducing a shock absorbing material, namely gas, liquid, or a combination thereof into that cavity. Each air valve has means in it for automatically bleeding off a portion of the shock absorbing material introduced into the cavity once the pressure of that material reaches a predetermined level.
摘要:
Precipitated silica, formed by the interaction of sodium water glass and sulfuric acid, followed by mechanical processing, is employed as an insulating material having a low thermal conductivity. The precipitated silica is dried, compressed, placed in an evacuable pouch, and evacuated. The resulting board-like insulation configuration is used directly as insulation in, for example, household refrigerators.
摘要:
The polyhedral body of aluminum such as a watch case obtained by the inventive method is colored in two different colors on different polyhedral faces demarcated by the ridgeline therebetween with remarkable decisiveness not obtained in the prior art methods. The inventive method utilizes anodization and coloring by dyeing in two steps. A part of the polyhedral faces anodized and colored in a dark color in the first step is ground to expose the bare surface of aluminum, which is then activated by dipping in an aqueous acid solution and again anodized by applying an unconventionally high voltage in an electrolyte bath of a specific composition followed by coloring in a light color decoratively distinguishable from the dark color imparted in the first step coloring. By virtue of the activation treatment of the bare aluminum surface and the unusual conditions in the second anodization, the demarcation between the differently colored polyhedral faces is very decisive and beautiful and the oxide films on both sides of the ridgeline have excellent adhesion and high anti-corrosion resistance.
摘要:
A collapsible dispensing tube is manufactured continuously from a flat sheet or web which is formed into a cylinder having an overlapped seam which is fused together by heat. A single pressure pad containing an induction heating element applies pressure at the seam area while the seam area is heated. The pressure pad containing the source of induction heat is removed, the cylinder is advanced incrementally, and the cycle is repeated.