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Showing papers on "Naturalness published in 1987"



01 Jan 1987
TL;DR: An assembly for use in a vending machine in the form of a tray of modular structure for dispensing bagged or packaged products that are loaded into the top of the trays and dispensed by being moved horizontally off of the front edge of the tray and dropped by gravity into an area accessible from the exterior of the dispenser is described in this article.
Abstract: An assembly for use in a vending machine in the form of a tray of modular structure for dispensing bagged or packaged products that are loaded into the top of the tray and dispensed by being moved horizontally off of the front edge of the tray and dropped by gravity into an area accessible from the exterior of the dispenser. The tray modules are constructed of transparent material such as clear plastic to enable all of the products to be readily observed through an enlarged window in the front door of the cabinet thereby providing a vending apparatus that enables customer observation of the bagged or packaged products and the highly attractive packages or wrappers normally provided on such products. Each tray module includes a supporting surface on which the articles to be dispensed rest and conveying means including article-engaging fingers or tabs which move the articles off the end of the supporting surface so that they will drop downwardly into an access area. The vending machine includes multiple tray assemblies with the two uppermost tray assemblies being swingable downwardly to an inclined position when they are pulled outwardly at the front of the machine to facilitate loading. Each tray module includes an electrically operated power unit that is automatically engaged when the tray assembly is moved to its operative position and automatically disengaged when the tray assembly is moved to its extended or loading position.

24 citations





Journal ArticleDOI
TL;DR: In this article, a criterion of naturalness for discrete symmetries occuring in superstring compactification is proposed, and a three-family Calabi-Yau manifold is investigated for a discrete symmetry necessary to avoid fast proton decay.