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    • 51. 发明授权
    • Process for producing styrene resin reduced in content of low-molecular ingredient
    • 降低低分子成分含量的苯乙烯树脂的制造方法
    • US06759498B2
    • 2004-07-06
    • US10275328
    • 2002-11-08
    • Takeshi IkematsuKiyoshi KawakamiHironori SuezawaHiroshi Shirai
    • Takeshi IkematsuKiyoshi KawakamiHironori SuezawaHiroshi Shirai
    • C08F1208
    • C08F12/08C08F2/06
    • A process for producing a styrenic resin with a small content of low molecular weight components, comprising a continuous anionic polymerization process wherein a raw material system having the following composition (A) is continuously fed, either collectively or in a divided manner, from one end of a reactor tank R1 having a back mixing flow and the product system is continuously discharged from the other end of the reactor tank R1, the internal temperature of the reactor tank R1 being controlled to a range of 40-120° C., the average proportion of styrene monomers to the sum total of the styrene monomers, hydrocarbon solvent and styrenic polymers present in the reactor tank R1 being controlled to less than 10 wt. %, and the resulting styrenic polymer solution being devolatilized and dried: (A) Styrene monomer 1.0 kg Hydrocarbon solvent 0.1-3 kg Organolithium compound 0.5-200 mmoles.
    • 一种生产低分子量组分含量少的苯乙烯树脂的方法,包括连续的阴离子聚合方法,其中具有下列组成(A)的原料体系从一端或一起分开连续进料 具有反混合流的反应器罐R1和产物系统从反应槽R1的另一端连续排出,反应槽R1的内部温度被控制在40-120℃的范围内,平均值 苯乙烯单体的比例相对于存在于反应器罐R1中的苯乙烯单体,烃溶剂和苯乙烯聚合物的总和控制在小于10wt。 %,所得苯乙烯聚合物溶液脱挥发和干燥:
    • 53. 发明授权
    • Ball grid array connector
    • 球栅阵列连接器
    • US06743039B2
    • 2004-06-01
    • US10256650
    • 2002-09-27
    • Hiroshi ShiraiAkira Kubo
    • Hiroshi ShiraiAkira Kubo
    • H01R13625
    • H05K7/1007
    • A ball grid array connector having an insulative housing with a plurality of contacts in electrical connection with corresponding solder balls that protrude from a surface of the housing. The solder balls form a soldering region for attachment to a circuit board. The housing has a center of gravity biased from a center of the soldering region, and a positional compensation member is attached to the housing and the circuit board. The positional compensation member prevents the housing from becoming inclined with respect to the circuit board when the solder balls are attached to the circuit board and prevents the housing from becoming inclined with respect to an electronic part when the electronic part is mounted to the housing on a side opposite from the circuit board.
    • 一种球栅阵列连接器,具有绝缘壳体,多个触点与从壳体的表面突出的相应焊球电连接。 焊球形成用于附接到电路板的焊接区域。 壳体具有从焊接区域的中心偏置的重心,并且位置补偿构件附接到壳体和电路板。 当电子部件安装到壳体上时,位置补偿部件防止壳体相对于电路板倾斜,当焊球安装到电路板上时,防止壳体相对于电子部件倾斜 一侧与电路板相对。
    • 54. 发明授权
    • IC socket
    • IC插座
    • US06425771B1
    • 2002-07-30
    • US09966175
    • 2001-09-28
    • Hiroshi ShiraiShintaro Abe
    • Hiroshi ShiraiShintaro Abe
    • H01R1200
    • H01R13/193H05K1/0271H05K3/3436
    • An IC socket is provided which can absorb the difference in linear expansion coefficient between the housing and the circuit board, and thus prevent the occurrence of solder cracking and warping, without lowering the strength of the housing. First slits which have bottoms and which extend from the upper surface of the housing toward the undersurface of the housing are formed between specified rows of pin receiving openings which are formed in the upper surfaces of contact press-fitting accommodating holes that are arranged in the form of a matrix. These holes pass entirely through the housing from the upper surface to the undersurface. Second slits which have bottoms and which extend from the undersurface of the housing toward the upper surface of the housing are formed between specified rows of solder ball receiving cavities formed in the undersurfaces of the contact receiving cavities in positions where the first slits are not formed.
    • 提供一种能够吸收壳体与电路板之间的线膨胀系数差的IC插座,从而防止焊料开裂和翘曲的发生,而不会降低壳体的强度。 具有底部并且从壳体的上表面朝向壳体的下表面延伸的第一狭缝形成在形成在接触压配合容纳孔的上表面中的指定排的销接收开口之间, 的矩阵。 这些孔完全穿过壳体从上表面到下表面。 具有底部并且从壳体的下表面延伸到壳体的上表面的第二狭缝形成在形成在不形成第一狭缝的位置处的接触容纳腔的下表面中的特定的焊球接收空腔排之间。
    • 55. 发明授权
    • Tilt switch
    • 倾斜开关
    • US06348665B1
    • 2002-02-19
    • US09666548
    • 2000-09-21
    • Shigeo OhashiHiroshi Shirai
    • Shigeo OhashiHiroshi Shirai
    • H01H3502
    • H01H35/02H01H35/027
    • A tilt switch includes a pair of contact elements; and at least one ball member which rolls along a path defined between the contact elements. The contact elements are disposed facing each other with a distance therebetween, as measured at one end, which is greater than the diameter of the ball member, and as measured at the other end, which is slightly smaller than the diameter of the ball member. Tilting of the tilt switch is electrically detected through detection of whether or not the ball member is held between the contact elements. In another embodiment the tilt switch includes a housing having a hollow portion; at least one rolling member disposed to roll substantially linearly within the hollow portion; a contact mechanism accommodation portion disposed side by side with the hollow portion; a movable contact element and a stationary contact element accommodated within the contact mechanism accommodation portion and disposed facing each other, each of the movable contact element and the stationary contact element being a spring element; and a working member having a pivot formed thereon. The working member has a portion thereof projecting into the hollow portion and is rotated by movement of the rolling member to press the movable contact element into contact with the stationary contact element.
    • 倾斜开关包括一对接触元件; 以及沿着限定在接触元件之间的路径滚动的至少一个球部件。 接触元件彼此面对地设置,在一端处测量的距离大于球构件的直径,并且在另一端测量的距离小于球构件的直径。 通过检测球形件是否保持在接触元件之间来电倾斜开关的倾斜。 在另一个实施例中,倾斜开关包括具有中空部分的壳体; 至少一个滚动部件设置成在所述中空部分内大致直线地滚动; 与所述中空部并排配置的接触机构容纳部; 可动接触元件和固定接触元件,其容纳在所述接触机构容纳部分内且彼此相对地设置,所述可动接触元件和所述固定接触元件中的每一个都是弹簧元件; 以及具有形成在其上的枢轴的工作构件。 工作构件具有突出到中空部分中的一部分,并且通过滚动构件的移动而旋转,以将可动触头元件按压到与固定触点元件接触。
    • 56. 发明授权
    • Electrical connector
    • 电连接器
    • US6099363A
    • 2000-08-08
    • US288605
    • 1999-04-08
    • Hiroshi ShiraiHiroyuki Okazaki
    • Hiroshi ShiraiHiroyuki Okazaki
    • H01R4/48H01R4/50
    • H01R4/5075
    • Electrical connector (1) comprising a first contact member (10) having an arcuate contact surface (14a) that engages an electrical wire (3), a second contact member (40) has a connecting portion (50) and a pressing portion (48) that presses a free end (30) of the contact section (14). Insulating housing (60) has a first cavity (62) in which a wire-engaging surface (74) is located, and a second cavity (66) which communicates with the first cavity (62). When the first contact member (10) is inserted into the first cavity (62) and the second contact member (40) is press-fitted in the second cavity (66) in a state in which the electrical wire 3 is disposed between the wire-engaging surface (74) and the contact section (14), the pressing portion (48) presses the free end (30) so that the contact section (14) is caused to make electrical connection with the electrical wire (3).
    • 电连接器(1)包括具有接合电线(3)的弓形接触表面(14a)的第一接触构件(10),第二接触构件(40)具有连接部分(50)和按压部分 ),其压紧接触部分(14)的自由端(30)。 绝缘壳体(60)具有第一腔(62),其中定位有线接合表面(74),以及与第一腔(62)连通的第二腔(66)。 当第一接触构件(10)插入到第一空腔(62)中并且第二接触构件(40)被压配合在第二空腔(66)中时,其中电线3设置在电线 (74)和接触部分(14),按压部分(48)按压自由端(30),使得接触部分(14)与电线(3)电连接。
    • 57. 发明授权
    • Valve operating mechanism for an internal combustion engine
    • 内燃机的阀门操作机构
    • US4901685A
    • 1990-02-20
    • US310468
    • 1989-02-15
    • Koichi FukuoHiroshi ShiraiTakashi Tatsumi
    • Koichi FukuoHiroshi ShiraiTakashi Tatsumi
    • F01L1/26
    • F01L1/267
    • A valve operating mechanism for an internal combustion engine having a crankshaft and a plurality of intake or exhaust valves normally biased in a valve closing direction includes a rocker shaft, a cam rotatable in synchronism with the crankshaft, a plurality of rocker arms swingably supported on the rocker shaft in association with the valves, respectively, and swingable by the cam, a coupling device for selectively connecting and disconnecting adjacent ones of the rocker arms under hydraulic pressure, and a hydraulic circuit openable and closable according to a rotational speed of the engine for selectively supplying hydraulic pressure to the coupling device. The opening and closing of the hydraulic circuit are controlled in view of a delay in operation thereof based on an angular displacement of the crankshaft or the cam so that the coupling device will be inoperative when the rocker arms are in a predetermined initial interval of a valve opening stroke thereof. The delay in operation of the hydraulic circuit is determined dependent on operating conditions of the internal combustion engine. The predetermined initial interval is defined such that when a piston of the coupling device is urged to slidably move from one of the rocker arms to the other during the initial interval, the piston is struck by the other rocker arm.
    • 具有曲轴和通常以关闭方向偏压的多个进气门或排气门的内燃机的气门操作机构包括:摇臂轴,与该曲轴同步旋转的凸轮;多个摆臂, 摇杆轴分别与阀相连并由凸轮摆动,用于在液压下选择性地连接和断开相邻的摇臂的联接装置,以及根据发动机的转速可开启和关闭的液压回路 选择性地向连接装置供给液压。 考虑到其基于曲轴或凸轮的角位移的延迟来控制液压回路的打开和关闭,使得当摇臂处于阀的预定初始间隔内时,联接装置将不起作用 打开行程。 液压回路的运行延迟取决于内燃机的运行条件。 预定的初始间隔被限定为使得当在初始间隔期间当联动装置的活塞被推动以从摇臂中的一个滑动地移动到另一个时,活塞被另一个摇臂撞击。