摘要:
A container is provided for slurry; an impeller is provided to effect slurry movement in the container; and a vibrator is operated for transmitting sufficient vibration to the moving slurry to lower the water/cement ratio to a low level, and at a water temperature within a specified range. The location of vibration transmission from the vibrator can be adjusted along the wall of the container.
摘要:
A printing member for a press with dampening is made by forming in a metal body an exposed surface which is cleaned and polished sufficiently to render it oleophilic due to surface tension. Then the surface is heated at selected image points thereon without contacting the surface and without penetrating through the body to create tiny surface fissures or capillaries at the image points which render the surface hydrophilic at the image points.
摘要:
A lithographic plate for printing without dampening comprising a strong stable substrate, an oleophobic surface layer on the substrate and an oleophilic surface underlying the surface layer, the surface layer being decomposable by spark discharges originating from a non-contacting electrode scanned across the plate surface. A preferred plate embodiment includes a multiplicity of tiny electrically conductive peaks in the plate which point away from the substrate and are in a relatively uniform distribution across the plate surface area.
摘要:
A switch using an improved method of optically-triggered avalanche breakdown which can produce pulses of 100 picoseconds or longer duration that can deliver five kilovolts into 50 ohms using a standard laser diode. A semiconductor block is provided with contacts on opposing sides across which a high-voltage less than the avalanche breakdown voltage is applied. One of the electrodes is on a mesa on one side of the block. The mesa is then irradiated with electromagnetic radiation. The wavelength of the radiation and the absorption coefficient of the semiconductor block are chosen so that the absorption depth of the majority of the radiation is less than the distance between the contacts. This results in a conduction area where absorption occurs, thus applying most of the high voltage across the distance beyond where the radiation is absorbed. This provides field compression and generates an avalanche breakdown field across the remaining distance of the semiconductor block.
摘要:
A cold water-soluble quick-setting low methoxyl pectin dry mix composition providing smooth, continuous and uniform gels having good texture and mouth-feel characteristics is prepared by combining a low methoxyl pectin which has been co-dried with a protective amount of buffer and a solubilizing amount of sugar with a slowly soluble calcium ion source in an amount sufficient for gel formation and a slowly dissolving edible acid in an amount which will provide a final pH of from about 3.5 to 4.5 upon dissolution of the mix in water.
摘要:
A fastener for securing a rail to a wire shelf having a plurality of support rods extending in parallel spaced-apart fashion. The fastener has a fastener body with an elongate rail engaging flange, a shelf engaging flange, and a connecting shaft portion extending between the rail engaging flange and the shelf engaging flange. The rail engaging flange is insertable through an elongate opening of an the rail in a first orientation and, upon rotation of the fastener, the rail engaging flange is configured to extend across said elongate opening thereby restricting withdrawal therefrom, while the shelf engaging flange traps a support member of the shelf thereby interlocking the associated rail to the associated shelf.
摘要:
A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a melamine polymer, a photogenerating layer, and at least one charge transport layer.
摘要:
A multiple resolution imaging system employs an array of imaging devices each tracing a helical pattern on a recording medium. The imaging devices may be activated sequentially along multiple interlaced helical paths to allow a selectable image resolution with reduced imaging artifacts.
摘要:
A method for cleaning or restoring a surface using a mop that is attached to a carrier block. A flowable pesticide or restorative material is applied and removed by passing the mop over and in contact with the material that is applied in closely timed relationship. The method further utilizes different mops attached to the carrier block for each phase, one of which has grommets for attaching the mops to the carrier block.