公开(公告)号：US4107738A

公开(公告)日：1978-08-15

申请号：US717544

申请日：1976-08-25

申请人： John W. Van Norman

发明人： John W. Van Norman

IPC分类号： E03F7/00 ,  E03F7/12 ,  G01M3/00 ,  G01M3/38 ,  H04N7/18

CPC分类号： E03F7/00 ,  E03F7/12 ,  G01M3/005 ,  G01M3/38

摘要： A camera, as for example a TV camera, is associated with a hydraulic jet nozzle unit whereby delivery of water under pressure to the jet nozzle unit causes rearwardly-directed jets of water to advance the camera and jet unit along a sewer, with the structure being retracted along the sewer by suitable means, such as rewinding a hose which supplies water under pressure to the jet nozzle unit.

摘要翻译： 相机（例如电视摄像机）与液压喷嘴单元相关联，从而将压力下的水输送到喷嘴单元引起向后的水射流，从而沿着下水道推进照相机和喷射单元，结构 通过合适的方式沿着下水道收回，例如将在压力下供水的软管重新卷绕到喷嘴单元。