公开(公告)号：US20200284389A1

公开(公告)日：2020-09-10

申请号：US16788686

申请日：2020-02-12

申请人： Robert Ward Carter ,  David B. Crafts ,  Maxwell Frank Darrow

发明人： Robert Ward Carter ,  David B. Crafts ,  Maxwell Frank Darrow

IPC分类号： F16L55/165 ,  B66D1/50 ,  F16L1/028 ,  F16L1/06 ,  E21B7/20

摘要： A pipe bursting system and method, and components thereof, are described wherein a bursting head assembly pulled by a cable employs a relatively small pneumatic impactor (hammer) and a relatively large cable tension to impose a cyclical stress on the pipe being burst to cause fatigue failure of the pipe, resulting in lower size and power requirements, and higher efficiency for a given set of job requirements.

公开(公告)号：US20180245726A1

公开(公告)日：2018-08-30

申请号：US15902906

申请日：2018-02-22

申请人： Robert Ward Carter ,  David B. Crafts ,  Maxwell Frank Darrow

发明人： Robert Ward Carter ,  David B. Crafts ,  Maxwell Frank Darrow

IPC分类号： F16L55/165

CPC分类号： F16L55/1658 ,  F16L55/18

摘要： A pipe bursting system and method are described wherein a bursting head pulled by a cable employs a relatively small pneumatic hammer and a relatively large cable tension to impose a cyclical hoop stress on the pipe being burst to cause fatigue failure of the pipe, resulting in lower size and power requirements, and higher efficiency for a given set of job requirements.

公开(公告)号：US11009174B2

公开(公告)日：2021-05-18

申请号：US16788686

申请日：2020-02-12

申请人： Robert Ward Carter ,  David B Crafts ,  Maxwell Frank Darrow

发明人： Robert Ward Carter ,  David B Crafts ,  Maxwell Frank Darrow

IPC分类号： F16L55/18 ,  F16L55/165 ,  B66D1/50 ,  E21B7/20 ,  F16L1/06 ,  F16L1/028

摘要： A pipe bursting system and method, and components thereof, are described wherein a bursting head assembly pulled by a cable employs a relatively small pneumatic impactor (hammer) and a relatively large cable tension to impose a cyclical stress on the pipe being burst to cause fatigue failure of the pipe, resulting in lower size and power requirements, and higher efficiency for a given set of job requirements.

公开(公告)号：US10598306B2

公开(公告)日：2020-03-24

申请号：US15902906

申请日：2018-02-22

申请人： Robert Ward Carter ,  David B Crafts ,  Maxwell Frank Darrow

发明人： Robert Ward Carter ,  David B Crafts ,  Maxwell Frank Darrow

IPC分类号： F16L55/165 ,  F16L55/18

摘要： A pipe bursting system and method are described wherein a bursting head pulled by a cable employs a relatively small pneumatic hammer and a relatively large cable tension to impose a cyclical hoop stress on the pipe being burst to cause fatigue failure of the pipe, resulting in lower size and power requirements, and higher efficiency for a given set of job requirements.