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公开(公告)号:US2089646A
公开(公告)日:1937-08-10
申请号:US806235
申请日:1935-02-25
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
CPC classification number: B05B7/063 , A62C31/12 , B01F5/0406 , B05B7/061
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2.
公开(公告)号:US1768047A
公开(公告)日:1930-06-24
申请号:US19054127
申请日:1927-05-11
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
IPC: A62C13/00
CPC classification number: A62C13/006
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3.Method of and apparatus for burying stiff-walled pipes in the ground 失效
Title translation: 在地面埋设硬壁管的方法和设备公开(公告)号:US3916636A
公开(公告)日:1975-11-04
申请号:US48845174
申请日:1974-07-15
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
CPC classification number: E21B7/046
Abstract: A method of and apparatus for burying a stiff-walled pipe in the ground, is disclosed, in which the individual pipe is forced forward from an access pit directly into the earth, while water flows through the interior of the pipe from the rearward end thereof, as seen in the direction of advancement, and emerges at the forward end of the pipe.
Abstract translation: 公开了一种在地面上埋设刚性壁管的方法和装置,其中将各个管道从进入坑直接推入地面,同时水从其后端流过管道内部 ,从前进方向看,出现在管道的前端。
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公开(公告)号:US2003184A
公开(公告)日:1935-05-28
申请号:US70106933
申请日:1933-12-05
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
IPC: A62C5/00
CPC classification number: A62C5/002 , Y10S261/26
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公开(公告)号:US1807399A
公开(公告)日:1931-05-26
申请号:US26925228
申请日:1928-04-11
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
IPC: A62C13/00
CPC classification number: A62C13/006
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公开(公告)号:US2164153A
公开(公告)日:1939-06-27
申请号:US16390537
申请日:1937-09-15
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
CPC classification number: B01F5/0498 , B01F5/0406 , B01F5/0423 , B01F5/064 , Y10S261/26 , Y10T137/87346
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公开(公告)号:US2086711A
公开(公告)日:1937-07-13
申请号:US2355135
申请日:1935-05-27
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
IPC: B01F5/04
CPC classification number: A62C5/02 , A62C31/12 , B01F5/0406
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8.
公开(公告)号:US2073204A
公开(公告)日:1937-03-09
申请号:US1589435
申请日:1935-04-11
Applicant: WILHELM FRIEDRICH
Inventor: WILHELM FRIEDRICH
IPC: B01F5/04
CPC classification number: B01F5/041 , Y10S261/26
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