Threaded connection for pipes
    1.
    发明授权

    公开(公告)号:US11933431B2

    公开(公告)日:2024-03-19

    申请号:US17427256

    申请日:2020-02-07

    CPC classification number: F16L15/04 C25D7/003

    Abstract: A threaded connection for pipes includes a pin, a box, a shoulder part plating layer, and a non-shoulder part plating layer. The shoulder part plating layer has an outermost layer formed of a high friction coefficient plating layer, and is arranged on a pin side shoulder part and/or a box side shoulder part. The non-shoulder part plating layer has an outermost layer formed of a low friction coefficient plating layer having a coefficient of friction lower than a coefficient of friction of the high friction coefficient plating layer, and the non-shoulder part plating layer is arranged on at least one of a pin side thread part, a pin side metal seal part, a box side thread part, and a box side metal seal part.

    Method and apparatus for electroplating small workpieces
    9.
    发明申请
    Method and apparatus for electroplating small workpieces 有权
    电镀小型工件的方法和装置

    公开(公告)号:US20070240994A1

    公开(公告)日:2007-10-18

    申请号:US11402569

    申请日:2006-04-12

    CPC classification number: C25D17/16 C25D7/003

    Abstract: A method for electroplating small workpieces includes the steps of: (A) providing a rotatable barrel which has an axis of rotation and a plurality of spaced-apart partition plates disposed one above the other; (B) mounting the barrel in a plating tank with the axis of rotation being inclined with respect to a horizontal line; (C) feeding a batch of the workpieces into the barrel; and (D) allowing the workpieces to fall down by gravity from one of the partition plates to the other one of the partition plates by rotating the barrel.

    Abstract translation: 一种用于电镀小工件的方法包括以下步骤:(A)提供具有旋转轴线的可旋转筒体和一个彼此上下设置的多个隔开的间隔板; (B)将所述筒体安装在电镀槽中,所述旋转轴线相对于水平线倾斜; (C)将一批工件供入桶中; 和(D)通过旋转筒体,允许工件通过重力从其中一个分隔板落下到另一个分隔板。

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