公开(公告)号：EP0812240A4

公开(公告)日：2000-08-09

申请号：EP96902822

申请日：1996-02-28

申请人： GRAHAM NEIL DERYCK BRAY

发明人： GRAHAM NEIL DERYCK BRAY

IPC分类号： B07B1/12 ,  B07B1/46 ,  B07B1/52 ,  B07B1/55 ,  E02F3/92 ,  E02F3/94 ,  E02F7/00 ,  E21C41/16 ,  B07B1/04

CPC分类号： B07B1/528 ,  B07B1/12 ,  B07B1/46 ,  B07B1/4609 ,  B07B1/55 ,  E02F3/9262 ,  E02F3/9281 ,  E02F3/94 ,  E02F7/005 ,  E21C41/16

摘要： A screening device comprising a screen (40) having a first side (43) for presentation to a body of material to be screened and a second side (44). A plurality of elongate screen openings (46) are formed in the screen extending between the first and second sides thereof. A plurality of tines (73) mounted on support means disposed on the second side of the screen. Each tine (73) is movable along a cyclical path at least part of which includes one of the elongate screen openings (46) whereby the tine is receivable in and movable along the elongate screen opening. The tine (73) extends beyond the first side (43) of the screen for at least part of the movement thereof along the screen opening (46). The screening device may be incorporated in various machines including a recovery head for an underground mining apparatus.