公开(公告)号：EP3004523A4

公开(公告)日：2017-02-22

申请号：EP14803885

申请日：2014-05-30

申请人： FRANK'S INT LLC

发明人： DOMEC BRENNAN S ,  ANGELLE JEREMY RICHARD

IPC分类号： E21B19/02 ,  B66C1/42 ,  C23C8/00 ,  C23C8/02 ,  C23C8/80 ,  E21B19/06

CPC分类号： E21B19/10 ,  C23C8/02 ,  C23C8/34 ,  C23C8/36 ,  C23C8/38 ,  C23C8/80 ,  C23C28/042 ,  C23C28/044 ,  C23C28/36 ,  E21B19/07

摘要： A gripping tool includes a gripping element and at least one gripping surface formed on the gripping element. The at least one gripping surface includes a plurality of teeth extending from the gripping element an outer layer. A method to surface process a gripping surface of a gripping tool includes providing the gripping surface in an environment comprising a source of additive material and heating the gripping surface at a temperature and a time to diffuse the additive material a depth into the gripping surface to form a diffusion layer.