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    • 1. 发明授权
    • Household electric toaster
    • 家用电烤箱
    • US06343543B1
    • 2002-02-05
    • US09643167
    • 2000-08-21
    • Lee J. BelknapJohn W. Foster
    • Lee J. BelknapJohn W. Foster
    • A47J3708
    • A47J37/0807A47J37/0814
    • A low cost toaster having a metal body and plastic end panels. The end panels have cooling inlet vents near their lower ends and the top wall of the metal body has air outlet vents. Ambient air admitted through the inlet vents flows upwardly through the toaster and outwardly through the outlet vents to provide a cooling effect sufficient to allow the use of inexpensive plastic material for molding the end panels. The toaster has a bread lifter made entirely from a wire rod, a bread lifter extension made entirely from a wire rod, and a toast color cam made entirely from a single piece of sheet metal.
    • 具有金属主体和塑料端板的低成本烤面包机。 端板在其下端附近具有冷却入口,并且金属体的顶壁具有出气口。 通过入口通风口进入的环境空气向上流过烤面包机,并通过出口排出口向外流动,以提供足以允许使用便宜的塑料材料来模制端面板的冷却效果。 烤面包机具有完全由线材制成的面包升降机,完全由线材制成的面包升降机延伸器和完全由单片金属板制成的烤面彩色凸轮。
    • 2. 发明授权
    • Dry lubricant drilling of thru-holes in printed circuit boards
    • 干式润滑剂钻孔印刷电路板中的通孔
    • US4929370A
    • 1990-05-29
    • US390496
    • 1989-08-01
    • William R. HatchJohn W. Foster
    • William R. HatchJohn W. Foster
    • B23Q11/10H05K3/00
    • H05K3/0047H05K2203/0769H05K2203/0786H05K2203/127Y10T408/03
    • Thru-holes are drilled in a printed circuit board panel having alternating dielectric layers and electrically conductive layers. A water soluble dry film lubricant sheet is placed adjacent an electrically conductive outer layer of the panel prior to drilling thru-holes through the panel with a rotary drill. The drill surface is lubricated while forming a clean thru-hole from contact between the drill and the lubricant. The dry film lubricant generally may comprise a water soluble lubricant hardened to a solid or semi-solid dry film-form and impregnated in a carrier such as a porous paper sheet. In one embodiment, the dry film lubricant includes a water soluble lubricant such as dipropylene glycol, a non-ionic surfactant, and a wax-like hardener. Following drilling of the thru-holes, the dry film lubricant sheet is removed, and the thru-holes can be rinsed in an aqueous alkaline solution. The thru-holes are then plated with an electrically conductive metal for forming electrical contacts between the metalized thru-holes and the electrically conductive layers of the panel. The dry film lubricant extends drill life and produces a clean thru-hole that prevents epoxy smear and avoids the prior art use of harsh chemical treatment following drilling to otherwise remove dielectric smear or fibers that might extend into the thru-hole and disrupt the continuity of the later-formed electrical contact.
    • 在具有交替电介质层和导电层的印刷电路板面板上钻出通孔。 在通过旋转钻机穿过面板钻通孔之前,将水溶性干膜润滑剂片放置在面板的导电外层附近。 钻孔表面被润滑,同时从钻头和润滑剂之间的接触形成干净的通孔。 干膜润滑剂通常可以包含硬化至固体或半固体干膜形式并浸渍在诸如多孔纸片的载体中的水溶性润滑剂。 在一个实施方案中,干膜润滑剂包括水溶性润滑剂如二丙二醇,非离子表面活性剂和蜡状固化剂。 在钻孔之后,除去干膜润滑剂片,并且可以在碱性水溶液中漂洗通孔。 然后用导电金属涂覆通孔,用于在金属化的通孔和面板的导电层之间形成电接触。 干膜润滑剂延长钻头寿命并产生清洁的通孔,防止环氧树脂涂抹,并避免现有技术在钻孔后采用严酷的化学处理,以除去可能延伸到通孔中的介电涂片或纤维,并破坏连续性 后来形成的电接触。
    • 9. 发明授权
    • Groundwater azimuth detection
    • 地下水方位检测
    • US4963019A
    • 1990-10-16
    • US386895
    • 1989-07-28
    • John W. FosterLawrence J. Fryda
    • John W. FosterLawrence J. Fryda
    • G01P5/00
    • G01P5/00
    • An apparatus detects the azimuth of the migration of groundwater containing suspended microscopic particles. The apparatus comprises a probe consisting of a light source which emits light in a vertical orientation and a photodigitizer which faces the light source and is separated from the light source to permit the flow of groundwater between the light source and the photodigitizer. When the probe is submerged in migrating groundwater, the eclipses of light created by the suspended microscopic particles as the groundwater passes between the light source and the photodigitizer are detected by the photodigitizer. Information from the photodigitizer is processed and then visually displayed.
    • 一种装置检测含有悬浮微粒的地下水迁移的方位角。 该装置包括由垂直取向发光的光源和面向光源并与光源分离的光敏元件的探针,以允许光源和光敏剂之间的地下水流动。 当探针淹没在迁移的地下水中时,由光电二极管检测地下水通过光源和光敏剂之间的悬浮微粒子产生的日照。 来自光敏元件的信息被处理并且然后可视地显示。