会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Electric storage heating apparatus
    • 蓄电式加​​热装置
    • US4395620A
    • 1983-07-26
    • US237573
    • 1981-02-23
    • Robert A. ClydeWilliam B. Crandall
    • Robert A. ClydeWilliam B. Crandall
    • F24H7/04F24H7/00H05B3/00
    • F24H7/0416
    • An electric heat storage apparatus comprises an electric heating element, a ceramic heat storage pipe, an air passageway in communication with the pipe, and a thermostatically controlled air circulation means. The ceramic pipe has a scalloped-shaped outer surface providing a plurality of crests and troughs and a series of parallel grooves cut in at least some of the crests. The heating element is located in the grooves in contact with the pipe. In a preferred embodiment, the pipe is provided with a plurality of internal ribs of at least two different lengths. The pipe is supported on a ceramic cradle and a ceramic sponge or metal turnings are inserted into the pipe between the ribs to increase the heat transfer area.
    • 电热储存装置包括电加热元件,陶瓷储热管,与管连通的空气通道和恒温控制的空气循环装置。 陶瓷管具有扇形形状的外表面,其提供多个波峰和槽,以及一系列在至少一些峰顶上切割的平行槽。 加热元件位于与管道接触的槽中。 在优选实施例中,管道设置有至少两个不同长度的多个内部肋条。 管道支撑在陶瓷支架上,并且陶瓷海绵或金属屑组件插入到肋之间的管道中以增加传热面积。
    • 8. 发明授权
    • Low thermal expansion ceramic and process
    • US4301214A
    • 1981-11-17
    • US216196
    • 1980-12-15
    • William B. Crandall
    • William B. Crandall
    • C04B33/13C04B35/19C04B41/50C04B41/87C04B33/00C04B33/04C04B33/24
    • C04B41/009C04B33/13C04B35/19C04B41/5037C04B41/87
    • A ceramic product having an expansion coefficient from about 1.0.times.10.sup.-6 .degree.C. to about 2.5.times.10.sup.-6 .degree.C. containing a sintered mixture of spodumene and clay is described. The sintered mixture also includes iron oxide in an amount from about 1.0% to about 7.0% by weight of the total sintered mixture. The final product includes a .beta. spodumene solid solution and mullite, and has a mullite content of less than 10% by volume. The presence of iron oxide in the sintered mixture reduces the formation of mullite during the formation of .beta. spodumene and thus reduces the expansion coefficient of the final product. The process for preparing the ceramic products described herein includes providing an intimate mixture of 40% by weight to 60% by weight of spodumene and 40% by weight to 60% by weight of clay and heating the mixture in the presence of iron oxide at a suitable time and temperature, within a range from cone 5 to cone 10 and preferably within a range from cone 6 to cone 9.The ceramic body is coated with a suitable glaze which preferably contains from about 70% by weight to about 90% by weight of spodumene and from about 10% by weight to about 30% by weight of talc and 20% by weight to about 10% by weight of whiting. The glaze composition also includes from about 1.0% by weight to about 7.0% by weight of iron oxide. The base portion of the ceramic products of this invention is optionally coated with a suitable terra sigillata for aesthetic purposes and also to avoid sticking of the product to the furnace during the firing process. The terra sigillata composition typically contains from about 10% by weight to 35% by weight of spodumene, 65% to 90% by weight of clay and 1% by weight to 7% by weight of iron oxide.Because of their low expansion coefficients the products of the invention are useful for a multitude of household purposes. They can readily withstand the thermal shock encountered when exposed to the extreme heating or cooling conditions normally present in household environments.