发明授权
- 专利标题: Rotary cutter heads for mineral mining machines
- 专利标题(中): 矿用挖掘机旋转刀头
-
申请号: US44001074申请日: 1974-02-06
-
公开(公告)号: US3904246A公开(公告)日: 1975-09-09
- 发明人: GANDY JOHN ALBERT , FRENCH ALBERT GRAHAM
- 申请人: COAL INDUSTRY PATENTS LTD
- 专利权人: Coal Industry Patents Ltd
- 当前专利权人: Coal Industry Patents Ltd
- 优先权: GB643773 1973-02-09
- 主分类号: E21C25/10
- IPC分类号: E21C25/10 ; E21C35/23 ; E21C13/04 ; E21B21/00 ; E21C7/00
摘要:
A rotary cutter head for mounting on a hollow drive shaft of a mineral mining machine comprises water powered, air flow inducing devices mounted remote from the axis of the rotary cutter head.
信息查询