Overhead valve type engine
    31.
    发明授权
    Overhead valve type engine 失效
    顶置阀式发动机

    公开(公告)号:US4864981A

    公开(公告)日:1989-09-12

    申请号:US296845

    申请日:1989-01-12

    摘要: An improved overhead valve internal combustion engine is disclosed in which an intake port defined in a cyclinder head for communication at its outlet side opening with a combustion chamber opens at its inlet end in a first side of the cylinder head for connection to a carburetor. An exhaust port also formed in the cylinder head for communication at its inlet side opening with the combustion chamber opens at its outlet end in a second side of the cylinder head that extends substantially perpendicular with the plane of the first side for connection through an exhaust duct to a muffler that is located on the opposite side of the cylinder head to the carburetor. This arrangement can enhance cooling of the cylinder and cylinder heads of an engine and miniturize engine overall size, without shortening the length of the exhaust duct connected between a muffler and exhaust port.

    摘要翻译: 公开了一种改进的顶置式内燃机,其中限定在用于在其出口侧开口处与燃烧室连通的循环器头中的进气口在其气缸盖的第一侧的入口端处开口,用于连接到化油器。 还形成在气缸盖中的用于在其入口侧开口处与燃烧室连通的排气口在其出口端处在气缸盖的第二侧开口,该第二侧基本上垂直于第一侧的平面延伸,以通过排气管道 位于气缸盖相对于化油器的消声器。 这种布置可以增强发动机的气缸和气缸盖的冷却,并且缩短发动机总体尺寸,而不会缩短连接在消声器和排气口之间的排气管道的长度。

    Permanent magnets
    32.
    发明授权
    Permanent magnets 失效
    永磁体

    公开(公告)号:US4859255A

    公开(公告)日:1989-08-22

    申请号:US165371

    申请日:1988-02-29

    IPC分类号: C22C38/00 H01F1/053 H01F1/057

    CPC分类号: H01F1/0577

    摘要: A magnetically anisotropic sintered permanent magnet of the FeCoBR system (R is sum of R.sub.1 and R.sub.2) wherein:R.sub.1 is Dy, Tb, Gd, Ho, Er, Tm and/or Yb, andR.sub.2 comprises 80 at % or more of Nd and Pr in R.sub.2, and the balance of other rare earth elements exclusive of R.sub.1,said system consisting essentially of, by atomic percent, 0.05 to 5% of R.sub.1, 12.5 to 20% of R, 4 to 20% of B up to 35% of Co, and the balance being Fe. Additional elements M(Ti, Zr, Hf, Cr, Mn, Ni, Ta, Ge, Sn, Sb, Bi, Mo, Nb, Al, V, W) may be present.

    摘要翻译: FeCoBR系的磁各向异性烧结永磁体(R为R1和R2的和),其中:R1为Dy,Tb,Gd,Ho,Er,Tm和/或Yb,R2包含80原子%以上的Nd, Pr在R2中的余量以及不包括R1的其它稀土元素的余量,所述体系基本上由原子百分比组成,R1为0.05〜5%,R为12.5〜20%,B〜4%〜20% 的Co,余量为Fe。 可以存在附加元素M(Ti,Zr,Hf,Cr,Mn,Ni,Ta,Ge,Sn,Sb,Bi,Mo,Nb,Al,V,W)。

    Tiltable tricycle
    33.
    发明授权
    Tiltable tricycle 失效
    可倾倒的三轮车

    公开(公告)号:US4678053A

    公开(公告)日:1987-07-07

    申请号:US918635

    申请日:1986-10-14

    摘要: A tiltable tricycle comprises a body frame, a single front wheel steerably supported on a front portion of the body frame, a power unit mounted on a rear portion of the body frame and including at least an engine, a joint case connected to the power unit for vertical angular movement, a rear axle support case connected to the joint case for lateral rolling movement, a rear axle assembly rotatably supported on the rear axle support case, a pair of rear wheels coupled to the rear axle assembly, respectively, and a shock absorber disposed between the body frame and the joint case.

    摘要翻译: 可倾斜的三轮车包括主体框架,可转向地支撑在主体框架的前部上的单个前轮,安装在主体框架的后部上并且至少包括发动机的动力单元,连接到动力单元的联接壳体 用于垂直角运动,连接到用于横向滚动运动的接头壳体的后轴支撑壳体,可旋转地支撑在后轴支撑壳体上的后轴组件,分别联接到后轴组件的一对后轮和一个震动 吸收器设置在主体框架和接头壳体之间。

    Process for producing magnetic materials
    34.
    发明授权
    Process for producing magnetic materials 失效
    磁性材料制造工艺

    公开(公告)号:US4601875A

    公开(公告)日:1986-07-22

    申请号:US532471

    申请日:1983-09-15

    摘要: Permanent magnetic materials of the Fe-B-R type are produced by:preparing an metallic powder having a mean particle size of 0.3-80 microns and a composition of, by atomic percent, 8-30% R (rare earth elements), 2-28% B, and the balance Fe, compacting, sintering at a temperature of 900-1200 degrees C., and aging at a temperature ranging from 350 degrees C. to the temperature for sintering. Co and additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) may be present.

    摘要翻译: 通过以下方式制备Fe-BR型永久磁性材料:制备平均粒径为0.3-80微米的金属粉末,原子百分比为8-30%的R(稀土元素),2-28 %B,余量为Fe,压实,烧结温度为900-1200摄氏度,并在350摄氏度至烧结温度下老化。 可以存在Co和附加元素M(Ti,Ni,Bi,V,Nb,Ta,Cr,Mo,W,Mn,Al,Sb,Ge,Sn,Zr,Hf)。

    Method and apparatus for core alignment of optical fibers
    35.
    发明授权
    Method and apparatus for core alignment of optical fibers 失效
    光纤芯线对准的方法和装置

    公开(公告)号:US4506947A

    公开(公告)日:1985-03-26

    申请号:US438821

    申请日:1982-11-03

    摘要: In the connection of the opposed ends of two optical fibers, a method and apparatus for core alignment of the optical fibers, comprises placing the two optical fibers being connected so that their ends face each other, and illuminating at least the facing ends with a beam of ultraviolet light thereby causing the illuminated ends of the cores of the optical fibers which are doped with germanium (Ge) to emit light of a wavelength in the visible region and enabling the core alignment to be directly monitored visually with the aid of the visible light so emitted from the cores during the course of the core alignment.

    摘要翻译: 在两个光纤的相对端的连接中,用于光纤的芯线对准的方法和装置包括将两个光纤连接成使得它们的端部彼此面对,并且用光束至少照射相对端部 的紫外线,从而使掺杂有锗(Ge)的光纤的芯的照明端发射出可见光区域的波长的光,并且借助于可见光直接监视核心对准 因此在核心对准过程中从核心发射。

    Two-cycle internal combustion engine
    36.
    发明授权
    Two-cycle internal combustion engine 失效
    双循环内燃机

    公开(公告)号:US4481909A

    公开(公告)日:1984-11-13

    申请号:US466783

    申请日:1983-02-16

    CPC分类号: F02B33/14 F02B2075/025

    摘要: A crankchamber precompression type two-cycle internal combustion engine including at least one cylinder assembly, each cylinder assembly including a stepped cylinder constituted by a minor diameter cylinder portion and a major diameter cylinder portion, a stepped piston received in the stepped cylinder and constituted by a minor diameter piston portion and a major diameter piston portion adapted to be fitted in the minor diameter cylinder portion and the major diameter cylinder portion respectively, a crankchamber connected to the major diameter cylinder portion, a working chamber defined between the minor diameter cylinder portion and the minor diameter piston portion, and a sub-intake chamber defined between the major diameter cylinder portion and the minor diameter piston portion. The sub-intake chamber is connected to an auxiliary carburetor set beforehand to form a mixture of fuel of high quality and air, and the crankchamber is connected to a main carburetor set beforehand to form a mixture of fuel of low quality and air. The working chamber is formed, in addition to a main scavenging port communicated with the crankchamber, with an auxiliary scavenging port which is communicated with the sub-intake chamber through a super-charging reservoir.

    摘要翻译: 一种曲轴箱预压型双循环内燃机,其包括至少一个气缸组件,每个气缸组件包括由小直径气缸部分和大直径气缸部分构成的阶梯式气缸,阶梯式活塞容纳在阶梯式气缸中并由 小直径活塞部分和大直径活塞部分,分别适于安装在小直径圆筒部分和大直径圆筒部分中,曲柄腔连接到大直径圆筒部分,工作室限定在小直径筒部分和 小直径活塞部分和限定在大直径圆筒部分和小直径活塞部分之间的子进气室。 副进气室预先连接到辅助化油器,以形成高质量的燃料和空气的混合物,并且曲轴箱预先连接到主化油器,以形成低质量燃料和空气的混合物。 除了与曲柄仓连通的主清扫口之外,还形成有辅助扫气口,该辅助扫气口通过超级充气容器与副进气室连通。