发明授权
- 专利标题： Sewer inspection device and method of scanning sewers for leaks
- 专利标题（中）： 下水道检查装置和扫查下水道泄漏的方法
-
申请号： US717544申请日： 1976-08-25
-
公开(公告)号： US4107738A公开(公告)日： 1978-08-15
- 发明人: John W. Van Norman
- 申请人： John W. Van Norman
- 申请人地址： IL Mendota
- 专利权人： Conco Inc.
- 当前专利权人： Conco Inc.
- 当前专利权人地址： IL Mendota
- 主分类号： E03F7/00
- IPC分类号： E03F7/00 ; E03F7/12 ; G01M3/00 ; G01M3/38 ; H04N7/18
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.
公开/授权文献
- US5857073A Data communication apparatus and method 公开/授权日：1999-01-05