Dials for stop watches
    1.
    发明授权
    Dials for stop watches 失效
    停止手表的DIAL

    公开(公告)号:US3557547A

    公开(公告)日:1971-01-26

    申请号:US3557547D

    申请日:1968-07-02

    IPC分类号: G04F7/04 G04F7/06

    CPC分类号: G04F7/06

    摘要: A STOP WATCH DIAL HAVING TWO OR MORE CONCENTRICALLY ARRANGED SCALES FOR INDICATING AN ESTIMATED TIME SPENT IN COVERING A GIVEN NORMAL DISTANCE, AND THE SCALES ARE SO GRADUATED THAT WITH THE AID OF THE WATCH HAND ONE CAN READ THE TIME SPENT IN COVERING THE DISTANCE OR THE SPEED. THE DIAL PERMITS DIRECTLY READING THE ESTIMATED SPEED OR TIME PER NORMAL LENGTH UNIT AND SIMULTANEOUSLY IT INDICATES THE SIZE OF THE DIVISION FROM A GIVEN INDEAL SPEED OR TIME FOR THE NORMAL LENGTH UNIT. THE DIAL IS SUITED FOR USE IN MEASURING SPEEDS OR THE TIME SPENT IN COVERING DISTANCES AT RACES OVER GIVEN DISTANCES, AND THE SCALES OF THE DIAL ARE SO GRALUATED THAT, WHEN THE WATCH IN STOPPED AFTER A SHORT OR LONG DISTANCE HAS BEEN COVERED, THE SPEED AND TIME, RESPECTIVELY, FOR THE NORMAL DISTANCE OR NORMAL LENGTH UNIT COMMON TO THE TWO SCALES CAN BE DIRECTLY READ.