专利检索 ap:("SANDVIK MINING AND CONSTRUCTION OY") AND inv:"Juhani Laine" 第 1 页

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发明授权
Breaking hammer and method of supporting percussion piston 有权

公开(公告)号：US11828137B2

公开(公告)日：2023-11-28

申请号：US17668870

申请日：2022-02-10

申请人： SANDVIK MINING AND CONSTRUCTION OY

发明人： Mika Oksman , Jyrki Nissinen , Juhani Laine , Harri Moilanen

IPC分类号： E21B4/14 , B25D9/12 , B25D9/18 , E02D7/10

CPC分类号： E21B4/14 , B25D9/12 , B25D9/18 , E02D7/10 , B25D2250/065 , B25D2250/105 , B25D2250/121 , B25D2250/231

摘要： A hydraulic breaking hammer and method of supporting a percussion piston is provided. The breaking hammer includes a percussion device provided with a reciprocating piston. The piston is supported on a frame at its end portions by a first piston bearing element and a second piston bearing element. The second piston bearing element includes a collar sealing element facing towards a working collar of the piston. The piston bearing elements are easily mountable and dismountable separate components.