Electric power steering apparatus
    82.
    发明申请
    Electric power steering apparatus 审中-公开
    电动助力转向装置

    公开(公告)号:US20040016590A1

    公开(公告)日:2004-01-29

    申请号:US10401030

    申请日:2003-03-28

    Applicant: NSK LTD.

    Inventor: Toshiyuki Iwano

    Abstract: An electric power steering apparatus having an electric motor for generating steering auxiliary force and a reduction gear device for reducing a rotating speed of the motor by a gear mechanism connected to a rotating shaft of the electric motor, wherein at least one of reduction gears in the gear mechanism is a gear made of a synthetic resin which is lubricated by grease in which lubrication durability at a high temperature is improved while starting torque of rotation at a low temperature is kept low.

    Abstract translation: 一种具有用于产生转向辅助力的电动机的电动助力转向装置和用于通过连接到电动机的旋转轴的齿轮机构来减小电动机的转速的减速装置,其中至少一个减速齿轮 齿轮机构是由合成树脂制成的齿轮,其通过润滑脂润滑,其中在低温下开始转动转矩的同时,在高温下的润滑耐久性得到改善。

    Threaded joint for an oil well pipe
    85.
    发明申请
    Threaded joint for an oil well pipe 有权
    油井管螺纹接头

    公开(公告)号:US20030066641A1

    公开(公告)日:2003-04-10

    申请号:US10082212

    申请日:2002-02-26

    Abstract: A threaded joint for an oil well pipe is provided which prevents the occurrence of galling at the time of repeated tightening and loosening and which provides a high degree of air tightness and has excellent galling resistance and air tightness without using a liquid lubricant such as a compound grease. 1. A lubricating film of an inorganic polymeric compound which has an M (metal element)nullO (oxygen) backbone and has a solid lubricant dispersed therein is formed on a threaded portion or an unthreaded metal contact portion. 2. A phosphate film and the lubricating film of the inorganic polymeric compound is formed on the threaded portion or the unthreaded metal contact portion. 3. A Cu plating layer and the lubricating film of the inorganic polymeric compound or a lubricating film of a resin in which a solid lubricant is dispersed is formed on the threaded portion or the unthreaded metal contact portion. 4. A lubricating film of the inorganic polymeric compound or a lubricating film of the polymer and a rust preventing film containing an alkali metal salt of a carboxylic acid or an alkali earth metal salt of a carboxylic acid are formed on the threaded portion or the unthreaded metal contact portion.

    Abstract translation: 提供一种用于油井管的螺纹接头,其防止在反复拧紧和松动时发生磨损,并且提供高度的气密性并且在不使用液体润滑剂如化合物的情况下具有优异的耐磨损性和气密性 润滑脂。 1.在螺纹部分或无螺纹金属接触部分上形成具有M(金属元素)-O(氧)骨架并且分散有固体润滑剂的无机聚合化合物的润滑膜。 磷酸盐膜和无机高分子化合物的润滑膜形成在螺纹部分或无螺纹金属接触部分上。 在螺纹部分或无螺纹金属接触部分上形成Cu镀层和无机聚合物的润滑膜或其中分散有固体润滑剂的树脂的润滑膜。 4.在螺纹部分或无螺纹部分上形成无机聚合物的润滑膜或聚合物的润滑膜和含有羧酸的碱金属盐或羧酸的碱土金属盐的防锈膜 金属接触部分。

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