发明名称 BORING ELEMENT OF A GROUND BORING DEVICE
摘要 A boring element of a ground boring device includes a housing having a receptacle, a transmitter arranged in the receptacle of the housing and supported in the receptacle for movement in a longitudinal-axial direction of the boring element, and a front buffer connecting the transmitter with the housing. The transmitter moves towards a rear in the receptacle as a result of a deformation of the front buffer, when a rear percussive impulse is applied to the boring element, without the transmitter coming directly into contact with another part of the boring element.
申请公布号 EP2483522(A2) 申请公布日期 2012.08.08
申请号 EP20100763607 申请日期 2010.09.24
申请人 TRACTO-TECHNIK GMBH & CO. KG 发明人 PUETTMANN, FRANZ-JOSEF;GRASS, PETER;VOELKEL, GERHARD;RIEKES, ANDREAS;PRUTTI, FRANK
分类号 E21B47/01;E21B7/04 主分类号 E21B47/01
代理机构 代理人
主权项
地址