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1. 发明授权

US4663431A Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic sulfonic acid 失效
标题翻译：用芳香族磺酸碱金属盐制备聚芳硫醚的方法
公开(公告)号：US4663431A
公开(公告)日：1987-05-05
申请号：US858988
申请日：1986-05-02
申请人： Tsuguo Fujii , Katsumasa Yamamoto , Tetsuo Aratani , Yoshinori Uegaki
发明人： Tsuguo Fujii , Katsumasa Yamamoto , Tetsuo Aratani , Yoshinori Uegaki
IPC分类号： C08G75/02 , C08G75/16
CPC分类号： C08G75/0254
摘要： A process for preparing a polyarylene sulfide which comprises reacting an alkali metal sulfide compound and a polyhalo-substituted aromatic compound in an organic polar solvent in the presence of(A) an alkali metal salt of a phenolic aromatic sulfonic acid of the formula:(HO).sub.m --Ar--(SO.sub.3 M).sub.n wherein Ar is a di- to tetravalent aromatic group having 6 to 24 carbon atoms; M is an alkali metal; and m and n are each 1 or 2,(B) an alkali metal hydroxide and/or an alkali metal alcoholate, and optionally,(C) an alkali metal salt of sulfuric acid.
摘要翻译：一种制备聚芳硫醚的方法，其包括在（A）下式的酚芳族磺酸的碱金属盐的存在下，使有机极性溶剂中的碱金属硫化物和多卤代芳香族化合物反应：（HO ）m-Ar-（SO 3 M）n，其中Ar是具有6至24个碳原子的二价至四价芳族基团; M是碱金属; 和m和n各自为1或2，（B）碱金属氢氧化物和/或碱金属醇化物，和任选地（C）硫酸的碱金属盐。

2. 发明授权

US4591932A Auto-reverse mechanism for tape recorders 失效
标题翻译：磁带录像机的自动反转机制
公开(公告)号：US4591932A
公开(公告)日：1986-05-27
申请号：US431123
申请日：1982-09-30
申请人： Tetsuo Aratani
发明人： Tetsuo Aratani
IPC分类号： G11B15/10 , G11B15/093 , G11B15/44 , G11B15/02 , G11B15/48
CPC分类号： G11B15/093 , G11B15/442
摘要： Herein disclosed is an auto-reverse mechanism for a tape recorder, in which a switching plate is slid by the rotations of a reverse gear adapted to intermittently rotate following the rotations of a motor so that it switches pinch rollers thereby to change the running direction of a magnetic tape. The reverse gear is formed with first and second guide portions which are defined by cam protrusions. A cam plate for imparting an initial rotation to the reverse gear and for rotations in selective engagement with the first and second guide portions is equipped with a drive member for sliding a lock plate for locking a fast forward lever or a rewinding lever so that the lock plate is slid, when the cam plate engages with the first guide portion of the reverse gear, but not when the cam plate engages with the second guide portion.
摘要翻译：这里公开了一种用于磁带录音机的自动倒转机构，其中切换板通过适于随电动机的转动而间歇旋转的倒档齿轮的旋转而滑动，使得其切换夹送辊，从而改变行走方向磁带。倒档形成有由凸轮突起限定的第一和第二引导部分。用于向倒档齿轮施加初始旋转并且与第一和第二引导部分选择性接合的转动的凸轮板配备有用于滑动用于锁定快进杆或重绕杆的锁定板的驱动构件，使得锁当凸轮板与倒车齿轮的第一引导部分接合时，板不滑动，而不是当凸轮板与第二引导部分接合时。

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