Carbon dioxide gas generating compositions
    4.
    发明授权
    Carbon dioxide gas generating compositions 失效
    二氧化碳气体发生组合物

    公开(公告)号:US5489399A

    公开(公告)日:1996-02-06

    申请号:US341173

    申请日:1994-11-18

    摘要: 1. A carbon dioxide gas generating composition characterize in that:(a) the composition comprises the combination of at least one component acid greater than carbonic acid in dissociation constant, at least 0.5 g/100 g water in solubility at 30.degree. C. and solid (at least 40.degree. C. in melting point) at room temperature and at least one component alkali carbonate up to 50 g/100 g water in solubility at 3O.degree. C.,(b) at least one of the component acid and the component alkali carbonate of the combination is an acid having a solubility of up to 90 g/100 g water at 30.degree. C. or an alkali carbonate having a solubility of up to 2 g/100 g water at 30.degree. C.,(c) the component acid is an acid or a salt convertible into an acid on decomposition, and the component alkali carbonate is an alkali metal carbonate or hydrogencarbonate, or alkaline earth metal carbonate, and,(d) the ratio of the component acid to the component alkali carbonate to be mixed therewith is 1:5 to 5:1 in equivalent ratio.

    摘要翻译: 1.一种二氧化碳气体产生组合物,其特征在于:(a)所述组合物包含解离常数中的至少一种大于碳酸的组分酸,在30℃下溶解度至少为0.5g / 100g的水和 固体(在熔点至少40℃)和至少一种碱性碳酸酯组分,最多50g / 100g水,在30℃下的溶解度,(b)至少一种组分酸和 该组合的组分碱金属碳酸盐是在30℃下具有高达90g / 100g水的溶解度的酸或在30℃溶解度高达2g / 100g水的碱金属碳酸盐(c )组分酸是分解时可转化为酸的酸或盐,碱金属碳酸盐组分为碱金属碳酸盐或碳酸氢盐或碱土金属碳酸盐,和(d)组分酸与组分的比例 与其混合的碱金属碳酸酯的当量比为1:5至5:1。

    Camera having a picture image area and field of view varying mechanism
    5.
    发明授权
    Camera having a picture image area and field of view varying mechanism 失效
    摄像机具有图像区域和视场变化机制

    公开(公告)号:US5459541A

    公开(公告)日:1995-10-17

    申请号:US208826

    申请日:1994-03-11

    摘要: A camera having a mechanism for varying a picture image includes, an aperture frame which defines an aperture corresponding to the image area, and a pair of light intercepting plates which are rotatably supported by respective shafts on opposite sides of the aperture. The pair of light intercepting plates move between an operative position, in which the light intercepting plates partly cover the aperture, and a retracted position, in which the light intercepting plates are retracted from the aperture. The operative position corresponds to a small image area, and the retracted position corresponds to a large image area. The camera further includes an associating rod member, which is provided in the vicinity of one end of the shafts of the light intercepting plates and movable in a direction substantially perpendicular to the shafts, and an actuating member, which rotates the light intercepting plates in association with the movement of the rod member.

    摘要翻译: 具有用于改变图像图像的机构的相机包括:限定对应于图像区域的孔径的孔眼框架;以及一对遮光板,其由孔的相对侧上的各个轴可旋转地支撑。 一对遮光板在遮光板部分地覆盖孔的操作位置和缩回位置之间移动,其中遮光板从孔缩回。 操作位置对应于小图像区域,缩回位置对应于大图像区域。 照相机还包括一个联动杆构件,其设置在遮光板的轴的一端附近并且可沿基本上垂直于轴的方向移动;以及致动构件,其使遮光板相关联地旋转 随着杆构件的运动。