Logging apparatus for vessels
    1.
    发明授权
    Logging apparatus for vessels 失效
    船舶用记录装置

    公开(公告)号:US3604260A

    公开(公告)日:1971-09-14

    申请号:US3604260D

    申请日:1969-12-24

    申请人: EASTERN CO

    发明人: OGG ROBERT D

    IPC分类号: G01C22/02 G01C21/00

    CPC分类号: G01C22/02

    摘要: Apparatus for indicating the distance travelled by a vessel comprising a counter that operates cyclically and for periods of time during each cycle which is a linear function of the velocity of the vessel. The counter is operated with a control circuit which is energized in response to an electrical output signal that is substantially proportional and linear to the velocity of a vessel and a second electrical signal that varies linearly with time between two set values.