公开(公告)号：US5104261A

公开(公告)日：1992-04-14

申请号：US615467

申请日：1990-11-19

申请人： Olov Anderson ,  Helmut Dick ,  Sverker Hartwig

发明人： Olov Anderson ,  Helmut Dick ,  Sverker Hartwig

IPC分类号： E21D9/00 ,  E21D9/087 ,  E21D9/11

CPC分类号： E21D9/11

摘要： Tunnel boring machine for reaming of a pilot tunnel (11). The machine housing (12) is provided with a projecting part in front of the boring head (13), said projecting part comprising a part (20) being fixed relative to the machine housing and a shield (19) being separable from the fixed part.This arrangement permits substantially uninterrupted excavation of the tunnel and prevents the excavated soil from becoming wedged between the boring head and the tunnel front.

公开(公告)号：US06201183B1

公开(公告)日：2001-03-13

申请号：US09254196

申请日：1999-04-15

申请人： Rolf Enbom ,  Olov Anderson ,  Bernt Gidlund

发明人： Rolf Enbom ,  Olov Anderson ,  Bernt Gidlund

IPC分类号： H05K900

CPC分类号： H02G3/081

摘要： The invention provides a system of electromagnetic parts which form an electromagnetically shielded channel system for electric cables. Tubular parts are provided of a single piece structure, which are extruded from plastic materials and have several layers, including an inner layer of electrically insulating plastic material. There is at least one outer layer of electrically conductive material.

摘要翻译： 本发明提供一种形成用于电缆的电磁屏蔽通道系统的电磁部件系统。 管状部件由单件结构提供，其从塑料材料挤出并具有数层，包括电绝缘塑料材料的内层。 存在至少一个导电材料外层。