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    • 59. 发明申请
    • Stage for a workpiece
    • 工件的阶段
    • US20050073203A1
    • 2005-04-07
    • US10953884
    • 2004-09-29
    • Paul Harris
    • Paul Harris
    • B23Q1/01B23Q1/58B23Q1/62B23Q11/00H01L21/027H02K1/00
    • B23Q1/58B23Q11/0003
    • A stage (10) for a workpiece comprises an upper member (13) for carrying a workpiece holder (15), a lower member (12) and two guide assemblies (16) mounting the upper member (13) on the lower member (12) to be rectilinearly displaceable relative thereto. The lower member (12) is in turn preferably similarly mounted on a fixed base plate (11) by further such guide assemblies (16), the two members (12, 13) being respectively displaceable in an X direction and a Y direction. At least one of the members (12 or 13), but preferably both members and also the base plate (11), is made of a machinable lightweight composite, for example aluminium alloy and silicon carbide, having a coefficient of thermal expansion not exceeding that of the principal material of the guide assemblies by more than substantially 50%, preferably by no more than 30 to 35%.
    • 用于工件的台架(10)包括用于承载工件保持器(15)的上部构件(13),下部构件(12)和将上部构件(13)安装在下部构件(12)上的两个引导组件(16) )相对于其可直线地移位。 另外,通过另外的这种引导组件(16),下部构件(12)优选地类似地安装在固定的基板(11)上,两个构件(12,13)可分别在X方向和Y方向上移动。 构件(12或13)中的至少一个,但优选两个构件以及基板(11)由可加工的轻质复合材料制成,例如铝合金和碳化硅,其热膨胀系数不超过 的引导组件的主要材料超过基本上50%,优选不超过30至35%。
    • 60. 发明授权
    • Intrinsically safe electrical connector
    • 本安电气连接器
    • US5112252A
    • 1992-05-12
    • US698340
    • 1991-05-07
    • Paul Harris
    • Paul Harris
    • H01R13/533H01R13/627H01R13/648
    • H01R13/627H01R13/648
    • A two part electrical connector, one part 10 of which comprises one or more electrical contacts 12 mounted in a connector shell 14 of insulating material. Around the contact or contacts 12 and connector shell 44 is a conductive casing 16 shaped to cooperate with a similar casing on the other part of the connector. The conductive casing 16 is electrically connected to the wire braiding 26 of the cable 22 via a metallic sleeve plate 24, to ensure continuity of the earth shielding across the connector. A non-conductive outer body 36 covers at least a part of the conductive casing b 16. Non-conductive material is also used for the clamp nut 40 which tightens the braiding clamp 30 and the connecting nut 44 which locks the two parts of the connector together. The resulting connector has earth shielding but no external conductive surfaces capable of being charged to high voltage potential should internal shorting occur.
    • 两部分电连接器,其一部分10包括安装在绝缘材料的连接器壳体14中的一个或多个电触点12。 触点12和连接器外壳44周围是导电壳体16,导电壳体16成形为与连接器的另一部分上的类似外壳配合。 导电壳体16经由金属套筒板24电连接到电缆22的导线编织层26,以确保穿过连接器的接地屏蔽的连续性。 不导电的外部主体36覆盖导电壳体b16的至少一部分。非导电材料也用于夹紧螺母40,夹紧螺母40使编织夹30和连接螺母44紧固,该连接螺母44锁定连接器的两个部分 一起。 所产生的连接器具有接地屏蔽,但没有外部导电表面能够充电到高电压电位,如果发生内部短路。