Abrasive composition and process for polishing plastic article
    1.
    发明授权
    Abrasive composition and process for polishing plastic article 失效
    磨料组合物和抛光塑料制品的工艺

    公开(公告)号:US4935039A

    公开(公告)日:1990-06-19

    申请号:US337813

    申请日:1989-04-14

    IPC分类号: C09K3/14

    CPC分类号: C09K3/1463

    摘要: An effective abrasive composition is provided for polishing a plastic article, particularly a plastic lens, to give a mirror surface thereto. This abrasive composition comprises water, an aluminous abrasive and at least one polishing accelerator selected from the group consisting of aluminum oxalate and aluminum lactate, optionally with at least one sedimentation preventing agent selected from the group consisting of crystalline cellulose and colloidal alumnia.

    摘要翻译: 提供了一种有效的研磨组合物,用于抛光塑料制品,特别是塑料透镜,以给其提供镜面。 该磨料组合物包含水,高铝磨料和选自草酸铝和乳酸铝的至少一种抛光促进剂,任选具有至少一种选自结晶纤维素和胶体沉淀物的沉降防止剂。

    Abrasive composition and process for polishing
    2.
    发明授权
    Abrasive composition and process for polishing 失效
    研磨组合物和抛光工艺

    公开(公告)号:US4915710A

    公开(公告)日:1990-04-10

    申请号:US324057

    申请日:1989-03-16

    摘要: An abrasive composition particularly suitable for polishing an aluminum-based substrate for a magnetic recording disc, the composition comprising: an alumineous abrasive, preferably in an amount of 3 to 25% by weight; a polishing accelerator of gluconic and/or lactic acid, preferably in an amount of 0.1 to 3% by weight; optionally with sodium gluconate and/or sodium lactate in an amount of 0.1 to 3% by weight; colloidal alumina, preferably in an amount of 0.1 to 5% by weight; and water, the composition typically having a pH of 3 to 5.

    摘要翻译: 一种特别适用于抛光用于磁记录盘的铝基底材的磨料组合物,该组合物包含:优选3至25重量%的铝制磨料; 葡萄糖酸和/或乳酸的抛光促进剂,优选为0.1至3重量%的量; 任选地以0.1至3重量%的量的葡萄糖酸钠和/或乳酸钠; 胶体氧化铝,优选为0.1至5重量%的量; 和水,组合物通常具有3至5的pH。

    Catalysts and methods of making
    3.
    发明授权
    Catalysts and methods of making 失效
    催化剂和制造方法

    公开(公告)号:US3969542A

    公开(公告)日:1976-07-13

    申请号:US487892

    申请日:1974-07-12

    摘要: A sintered catalyst article is prepared by:molding into a shaped article and aging (I) eitherA. a refractory powder of calcium aluminate substantially free of silicon dioxide, alone, orB. a homogenous mixture of1. said refractory powder and2. at least one member selected from the group consisting of aluminum oxide, calcium oxide, beryllium oxide, magnesium oxide, strontium oxide and a compound which is converted by heating to one of said oxides;(II) sintering said molded and aged article at a temperature above 1150.degree.C;the thus sintered catalyst article containing 10 to 60 wt. percent of calcium oxide, 30 to 90 wt. percent of aluminum oxide, 0 to 30 wt. percent of at least one oxide selected from the group consisting of beryllium oxide, magnesium oxide and strontium oxide, and less than 0.2 wt. percent of silicon dioxide.

    摘要翻译: 烧结催化剂制品:

    General-purpose internal combustion engine
    4.
    发明授权
    General-purpose internal combustion engine 失效
    通用内燃机

    公开(公告)号:US4813385A

    公开(公告)日:1989-03-21

    申请号:US143299

    申请日:1988-01-11

    摘要: A general-purpose internal combustion engine comprises an engine unit, a recoil starter, a fuel tank disposed on the engine unit, a main air cleaner disposed on the engine unit and coupled with a precleaner, and a muffler disposed on the engine unit. The main air cleaner and the muffler are disposed laterally of the fuel tank in parallel relation to each other, the main air cleaner being located closely to the recoil starter, and the muffler being disposed remotely from the recoil starter. The precleaner has an air inlet member disposed remotely from the muffler and positioned without projecting out of a plane containing a side of the main air cleaner which is remote from the muffler. The precleaner has an air outlet and the main air cleaner has a case with an air inlet defined in a side thereof and a substantially cylindrical filter housed centrally in the case coaxially with the vertical axis thereof. The air inlet has a central axis sidewardly offset a distance from a horizontal axis of the case and connected to the air outlet.

    摘要翻译: 通用内燃机包括发动机单元,反冲起动器,设置在发动机单元上的燃料箱,设置在发动机单元上的主空气滤清器,并与预滤器连接,以及设置在发动机单元上的消声器。 主空气净化器和消音器彼此平行地布置在燃料箱的侧面,主空气滤清器紧邻反冲起动器定位,消声器远离反冲起动器设置。 预清洗器具有远离消声器设置的空气入口构件,并且定位成不从包含远离消音器的主空气净化器侧的平面突出。 预净化器具有空气出口,主空气净化器具有壳体,空气入口限定在其一侧,并且大致圆柱形的过滤器容纳在与其垂直轴线同轴的壳体的中心。 空气入口具有中心轴线,该中心轴线与壳体的水平轴线偏离一定距离,并连接到出气口。

    Process for decompression control in internal combustion engine and
apparatus therefor
    5.
    发明授权
    Process for decompression control in internal combustion engine and apparatus therefor 失效
    内燃机减压控制方法及其设备

    公开(公告)号:US4590905A

    公开(公告)日:1986-05-27

    申请号:US729822

    申请日:1985-05-02

    IPC分类号: F01L13/08 F02D13/04

    CPC分类号: F01L13/085

    摘要: A process and apparatus for controlling the decompression of an internal combustion engine for driving compressors, electric generators, and the like, the process including the steps of starting the engine with the decompression control engaged and the engine decompressed, partially activating the control when the engine reaches a first predetermined speed so that, as the speed is increased, the engine operates compressed, when the engine reaches normal operating speed, fully activating the control and, when the engine speed is decreased to a second predetermined speed below said normal operating speed but above said first predetermined speed, the control is reactivated for decompression operation of the engine until the engine stops. The apparatus comprises a decompression weight and subsidiary decompression weight, pivotally mounted for movement by centrifugal force relative to the engine cam shaft and interconnecting means for interconnecting the weights when the engine is started and until the engine reaches a first predetermined speed, releasing the weights, one from the other, above such predetermined speed, and re-engaging the weights after the engine is stopped.

    摘要翻译: 一种用于控制用于驱动压缩机,发电机等的内燃机的减压的过程和装置,所述方法包括以下步骤:启动发动机,减压控制接合和发动机减压,当发动机 达到第一预定速度,使得随着速度的增加,发动机运行压缩,当发动机达到正常运行速度时,完全启动控制,并且当发动机速度降低到低于所述正常运行速度的第二预定速度,但是 高于所述第一预定速度,则重新启动控制以用于发动机的减压操作,直到发动机停止。 该装置包括减压重量和辅助减压重量,枢转地安装用于通过离心力相对于发动机凸轮轴运动;以及互连装置,用于当发动机启动时直到发动机达到第一预定速度,并释放重量, 一个在另一个之上,高于这样的预定速度,并且在发动机停止之后重新接合重物。

    Catalyst and its method of preparation
    6.
    发明授权
    Catalyst and its method of preparation 失效
    催化剂及其制备方法

    公开(公告)号:US4101449A

    公开(公告)日:1978-07-18

    申请号:US795417

    申请日:1977-05-09

    摘要: A catalyst comprising 10 to 30 wt.% of nickel as nickel oxide, 20 to 60 wt.% of calcium as calcium oxide, 10 to 70 wt.% of aluminum as aluminum oxide and containing less than 1 wt.% of silicon dioxide. The catalyst is prepared by using: as the starting material for the nickel component, fine particles of nickel oxide obtained by heating a nickel compound which is decomposed to nickel oxide by heating at a temperature in the range of 400.degree. to 800.degree. C in the presence of oxygen; as the starting material for the calcium component, calcium oxide per se or a calcium compound which is decomposed to calcium oxide by heating and; as the starting material for the aluminum component, alumina cement of a high purity. The catalyst is prepared by mixing and kneading the starting materials with water, molding the same, then keeping the catalyst composition under a highly humid atmosphere at a temperature in the range of 5.degree. to 35.degree. C for longer than one day for hydrating and hardening the cement and thereafter sintering the same at a temperature in the range of 550.degree. to 1200.degree. C.

    摘要翻译: 包含10至30重量%的镍作为氧化镍的催化剂,20至60重量%的钙作为氧化钙,10至70重量%的铝作为氧化铝并且含有小于1重量%的二氧化硅。 催化剂是通过使用以下成分制备的:作为镍成分的起始原料,通过在400〜800℃的温度范围内加热分解为氧化镍的镍化合物而得到的氧化镍微粒子 存在氧气; 作为钙成分的原料,氧化钙本身或通过加热分解成氧化钙的钙化合物, 作为铝成分的原料,高纯度的氧化铝水泥。 催化剂通过将原料与水混合并捏合而制备,然后将其模塑,然后将催化剂组合物在5至35℃的温度下保持在高湿度的气氛下长达一天以进行水合和硬化 水泥,然后在550〜1200℃的温度下烧结。

    Lubricating oil detector for an internal combustion engine
    9.
    发明授权
    Lubricating oil detector for an internal combustion engine 失效
    内燃机润滑油检测仪

    公开(公告)号:US4203408A

    公开(公告)日:1980-05-20

    申请号:US961020

    申请日:1978-11-15

    IPC分类号: F01M11/12 F02B77/08

    CPC分类号: F01M11/12

    摘要: A lubricating oil detector for an internal combustion engine, the detector including a lubricating oil reservoir adapted to be disposed in a chamber of the engine wherein pressure pulsations are produced by reciprocating movement of a piston. An oil level detecting pipe extends to the exterior of a crank case of the engine, the pipe having an end opening at a lowest allowable oil level in the reservoir. A pressure detecting actuator is provided and is adapted to be mounted on the case and connected through a connecting tube to the detecting pipe. When the oil level is below the lowest allowable level, the pressure pulsations in the case are directed to the pressure detecting actuator, which is then actuated to stop the operation of the engine, or to operate an alarm.

    摘要翻译: 一种用于内燃机的润滑油检测器,所述检测器包括适于设置在发动机的腔室中的润滑油储存器,其中通过活塞的往复运动产生压力脉动。 油位检测管延伸到发动机的曲轴箱的外部,管道具有在油箱中最低允许油位的端部开口。 提供压力检测致动器,并且适于安装在壳体上并且通过连接管连接到检测管。 当油位低于最低允许水平时,该情况下的压力脉动被引导到压力检测致动器,该致动器然后被致动以停止发动机的操作或操作报警器。