发明名称 |
DEVICE FOR PLUGGING A PIPE |
摘要 |
An apparatus for plugging the interior of a pipe having an internal cylindrical surface, the pipe being penetrated by an access opening, the plugging device comprising: an upright tubular plugger housing having means at a lower end for attachment to a pipe in communication with an opening in the pipeline; an elongated vertical cylindrical control bar having a plugger at a lower end thereof, the plugger being operable to plug a pipe after it has been inserted through an opening into the pipe, comprising: an arrangement of a collar and first and second closure plates with respective truncated spherical surfaces to allow swivelling of a control bar placed therethrough in order to position the plugger in the pipe. or a control bar formed of two concentric members each provided with manipulating means. <IMAGE> |
申请公布号 |
HUT71025(A) |
申请公布日期 |
1995.11.28 |
申请号 |
HU19940002844 |
申请日期 |
1994.10.04 |
申请人 |
TDW DELAWARE INC. |
发明人 |
FREEMAN,ERIC N.;BLEVINS,DAVID L.;RALLS,GENE R.;ANDREW,BILL D.;WILSON,BUDDY A.;OSBURN,COY D. |
分类号 |
F16L41/00;F16L55/10;F16L55/105 |
主分类号 |
F16L41/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|