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    • 31. 发明授权
    • Production of a shaped filamentary structure
    • 形成形状的纤维结构的生产
    • US5113568A
    • 1992-05-19
    • US573552
    • 1990-08-24
    • Peter G. LawtonNorman Smith
    • Peter G. LawtonNorman Smith
    • D04H3/002D04H3/10D04H3/105D04H13/00D04H18/00F16D69/02
    • D04H3/002D04H13/00D04H18/02D04H3/10D04H3/105F16D65/126F16D69/023F16D2200/0052F16D2200/006Y10T29/49787Y10T29/49789Y10T29/49801Y10T29/53065
    • The invention is concerned with a method and apparatus for producing a shaped filamentary structure and more particularly, to filamentary structures which can be subjected to further processing to produce a carbon-carbon product. A specific use of the invention is in the production of discs for use in aircraft braking systems.The method includes needle punching a unidirectional layer of filaments to give a degree of dimensional stability; cutting a plurality of segments from the layer of needle punched filamentary material; assembling a plurality of segments in side-by-side contiguous relationship to produce a filamentary layer of the required structural shape; superimposing at least one similar layer on the first layer and needle punching the assembled layers to produce cross-linking of the layers.In the preferred method of carrying out the invention, the layers of filamentary material are supported by a sub-structure which permits needle penetration, and this sub-structure is peeled off the final needle punched assembly. A further preferred feature includes assembling the segments in a former and rotating the former relative to a reciprocating needling head.The invention also comprises an apparatus for producing a shaped filamentary structure comprising an open-topped receptable for the assembled segments; a needling head located over only part of the receptacle means for rotating the receptacle to bring a complete annulus of the filamentary segments in it under the needling head and a support located inside the receptacle and means for rotating the support with the receptacle, and lowering the support relatively to the receptacle during the needling operation.
    • 33. 发明授权
    • Brushless DC motor and encoding technique
    • 无刷直流电动机和编码技术
    • US4845411A
    • 1989-07-04
    • US103436
    • 1987-09-30
    • Norman Smith
    • Norman Smith
    • H02K29/08H02P6/08
    • H02K29/08H02P6/08
    • A brushless DC motor has no poles. Every 180.degree. electrical 3 coils, each a portion of a total winding, are wound onto the stator in 3 slots and in overlapping fashion. The overlapped portions of the coils are wound in the same flux creating direction. The windings are connected at a central, floating connection. Transistors connected to the remaining ends of the windings direct current to or from the windings so that two coils are always conductive in every 360.degree. electric arcuate length of stator. Hall devices 120.degree. electrical apart have their outputs fed to a logic, commutation circuit that decides, based on rotor positions, which of the transistors to cause to conduct.
    • 无刷直流电机没有极点。 每个180°的电气3线圈,每个绕组的一部分,以3个槽和重叠的方式缠绕在定子上。 线圈的重叠部分以相同的通量产生方向缠绕。 绕组以中央的浮动连接方式连接。 连接到绕组的剩余端的晶体管将直流电流传导到绕组或从绕组引出,使得两个线圈总是在定子的每360°电弧长度中导电。 120°电气隔离的霍尔器件的输出被馈送到逻辑换向电路,该换向电路基于转子位置决定导致哪个晶体管导通。
    • 35. 发明授权
    • Parting device
    • 分型装置
    • US4268948A
    • 1981-05-26
    • US11637
    • 1979-02-12
    • Per O. StrandellErik M. ThorslundColin R. MacKenzieNorman Smith
    • Per O. StrandellErik M. ThorslundColin R. MacKenzieNorman Smith
    • B21B1/08B22D11/126B21B1/44
    • B22D11/126B21B1/0815Y10T29/49989
    • A tool for forming parting grooves in a flat, plastically deformable workpiece, especially a continuously cast steel slab in a manner which seals the internal porosity of the slab in the regions which become exposed upon division, has a working portion in the form of a ridge which is most preferably in the form of a circumferential flange on a roll; and the cross-sectional shape of the ridge or flange is that of a highly convex tip between two gently convex side faces, and optionally, or essentially if either or both of the tip and the side faces are instead straight, the angle at which the side faces are mutually inclined is 20.degree. to 60.degree., the width of the tip is a given porportion of the thickness of the workpiece, and the width of the tip is specifically related to the said angle of inclination of the side faces. The height of the side faces, and their curvature and that of the tip, are also preferably within set limits.
    • 用于在平坦的,可塑性变形的工件中形成分离槽的工具,特别是连续铸造的铸钢板,其以密封在分开时暴露的区域中的板坯的内部孔隙度的方式具有脊的形式的工作部分 其最优选为辊上圆周凸缘的形式; 并且脊或凸缘的横截面形状是两个平缓凸起的侧面之间的高度凸起的尖端,并且可选地或基本上如果尖端和侧面中的任一个或两个相反地是直的,则 侧面相互倾斜20°至60°,尖端宽度为工件厚度的给定宽度,并且尖端的宽度与侧面的所述倾斜角特别相关。 侧面的高度及其曲率和尖端的高度也优选在设定的限度内。
    • 40. 发明申请
    • Integrated lumbar combined variable angular distraction structure
    • 综合腰椎组合可变角牵引结构
    • US20060015145A1
    • 2006-01-19
    • US11175684
    • 2005-07-06
    • Norman SmithCarlos BecerraShelly Fleming
    • Norman SmithCarlos BecerraShelly Fleming
    • A61F5/00
    • A61F5/04
    • A spinal treatment apparatus for applying a force to a patient includes a base portion, a telescoping support, a spinal distraction device and an actuator. The telescoping support is mounted on the base portion and includes a bottom member and a top member. The top member is engaged with the bottom member so that the top member has a retracted position and an extended position. The telescoping support is capable of withstanding a force, corresponding to the spinal treatment force, imparted on the top member, while in both the retracted position and the extended position. The spinal distraction device is mounted on the top member and applies the spinal treatment force to the patient. The actuator moves the top member vertically relative to the bottom member.
    • 用于向患者施加力的脊柱治疗装置包括基部,伸缩支撑件,脊柱牵引装置和致动器。 伸缩支撑件安装在基部上并包括底部构件和顶部构件。 顶部构件与底部构件接合,使得顶部构件具有缩回位置和延伸位置。 在缩回位置和延伸位置两者中,伸缩支撑件能够承受对应于脊柱处理力的力,该力施加在顶部构件上。 脊柱牵引装置安装在顶部构件上,并将脊柱治疗力施加到患者身上。 致动器相对于底部构件垂直地移动顶部构件。