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    Apparatus for determining the degree of gas impermeability for watch cases and the like articles
    2.
    发明授权
    Apparatus for determining the degree of gas impermeability for watch cases and the like articles 失效
    用于确定手表壳和类似物品的气体不透性程度的装置

    公开(公告)号：US3978710A

    公开(公告)日：1976-09-07

    申请号：US594543

    申请日：1975-07-09

    申请人： Michel Ratajski

    发明人： Michel Ratajski

    IPC分类号： G01M3/32 ,  G04D7/00

    CPC分类号： G04D7/007

    摘要： An apparatus for testing the gas impermeability of watch cases or other small articles comprises two enclosures. A bellows forms part of a hermetic separation between the enclosures, the bellows serving to move the movable plate of a variable condenser. The condenser is connected in an oscillator circuit to vary the oscillator frequency in accordance with the differential pressures between the two enclosures. The oscillator output frequency is compared with the output frequency of a stable frequency generator to provide a measurement indication. A watch case is placed within one enclosure and both enclosures brought to equal pressures after which the measurement of gas impermeability may begin.

    摘要翻译： 用于测试表壳或其他小物品的气体不透性的装置包括两个外壳。 波纹管形成外壳之间的气密分离的一部分，波纹管用于移动可变冷凝器的可移动板。 电容器连接在振荡器电路中，以根据两个外壳之间的压差来改变振荡器频率。 将振荡器输出频率与稳定频率发生器的输出频率进行比较，以提供测量指示。 手表壳放置在一个外壳内，两个外壳均等于压力，然后开始测量不透气性。

    Wrist watch case with vulcanized gasket
    4.
    发明授权
    Wrist watch case with vulcanized gasket 失效
    手表表带硫化垫圈

    公开(公告)号：US4497584A

    公开(公告)日：1985-02-05

    申请号：US501825

    申请日：1983-06-07

    申请人： Michel Ratajski

    发明人： Michel Ratajski

    IPC分类号： G04B39/02 ,  G04B39/00 ,  G04B37/00

    CPC分类号： G04B39/006

    摘要： A case body is fixed to a glass by means of an interposed ring of a vulcanizable elastomer, this ring being bonded by vulcanization either directly to the glass or to a metallized coating applied to the glass, as well as to the upper surface of the case body. The metallic coating is applied to an annular zone at the periphery of the underside of the glass. Instead of this coating, the inside surface of the glass may be frosted in that zone.

    摘要翻译： 通过插入的可硫化弹性体的环将壳体固定到玻璃上，该环通过硫化直接粘合到玻璃上或施加到玻璃上的金属化涂层以及壳体的上表面 身体。 将金属涂层施加到玻璃下侧周边的环形区域。 代替这种涂层，玻璃的内表面可能会在该区域磨损。