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    • 6. 发明授权
    • Sleeve for fixing optical cables
    • 用于固定光缆的套管
    • US06729772B2
    • 2004-05-04
    • US10203400
    • 2003-01-30
    • Ann-Cecile ReauAlain PetitDaniel Lecoq
    • Ann-Cecile ReauAlain PetitDaniel Lecoq
    • G02B636
    • G02B6/4471
    • A fixing sleeve for optical cables comprises along a common axis (A), both a first portion (11) that is substantially cylindrical and a second portion (12) that is substantially conical, said first and second portions being pierced by an axial bore (13). The sleeve (10) carries along its entire length a continuous slot communicating with said axial bore (13), the slot comprising a longitudinal first slot (110) in the first portion (11) of the sleeve, and a spiral second slot (120) in the second portion (12) of the sleeve. The sleeve is applicable to laying optical cables inside buildings.
    • 用于光缆的固定套包括沿公共轴线(A),大致圆柱形的第一部分(11)和大致圆锥形的第二部分(12),所述第一和第二部分被轴向孔( 13)。 所述套筒(10)沿着其整个长度承载与所述轴向孔(13)连通的连续狭槽,所述狭槽包括在所述套筒的第一部分(11)中的纵向第一槽(110)和螺旋形第二槽 )在套筒的第二部分(12)中。 套筒适用于建筑物内敷设光缆。
    • 7. 发明授权
    • Process for preparation of purified calcium sulfate in an aqueous medium
    • 在水性介质中制备纯化的硫酸钙的方法
    • US5173284A
    • 1992-12-22
    • US527373
    • 1990-05-23
    • Jacques MoissetAlain Petit
    • Jacques MoissetAlain Petit
    • C04B28/14C01F11/46C04B14/36C04B22/14C08K3/28C08K3/30C09C1/02D21H17/66D21H17/67D21H19/38D21H21/50
    • C09C1/025C01F11/466C04B14/365C04B22/143D21H17/66D21H19/38C01P2004/03C01P2004/61
    • A process for the preparation in an aqueous medium of purified calcium sulfate, with high whiteness, characterized in that it comprises:a) the formation of an aqueous solution by dissolution of impure hemihydrated calcium sulfate, at a concentration at most of 13.0 grams per liter (expressed in dissolved CaSO.sub.4) and at a pH of at least 5.5,b) the separation of the aqueous solution containing the dissolved calcium sulfate from the insoluble solid phase formed by the impurities to be removed,c) the recrystallization of the purified calcium sulfate in dihydrated form from the aqueous solution resulting from step (b), possibly in the presence of a seeding primer placed in the reaction medium,d) the separation after recrystallization of the aqueous phase poor in dissolved calcium sulfate from the solid phase composed of the recrystallized purified calcium sulfate,e) the recycling of the aqueous phase poor in dissolved calcium sulfate back to step (a) for dissolving impure calcium sulfate, yields calcium sulfate having at will the appearance of polymorphous or longilinear monomorphous crystalline structures.The purified crystalline structures obtained in accordance with the process are intended more particularly for fields of use as varied as cements and plasters and, more especially, for those of paper, paint and plastics.
    • 一种在白度高的纯化硫酸钙的水性介质中制备的方法,其特征在于其包括:a)通过溶解浓度至多13.0克/升的不纯半水合硫酸钙形成水溶液 (以溶解的CaSO 4表示)和pH至少为5.5的b)从由待除去的杂质形成的不溶性固相中分离含有溶解的硫酸钙的水溶液,c)纯化的硫酸钙的再结晶 从步骤(b)得到的水溶液中,可能在放置在反应介质中的接种引物的存在下,以脱水形式分离,d)从由 再结晶的纯化硫酸钙,e)将溶解的硫酸钙中的水相不良的再循环回到步骤(a)以溶解不纯的硫酸钙 e,产生硫酸钙,随意出现多晶或长线单晶晶体结构。 根据该方法获得的纯化的结晶结构更特别地用于如水泥和灰泥变化的用途领域,更具体地,涉及纸,油漆和塑料的那些领域。