公开(公告)号：EP2257674A4

公开(公告)日：2012-08-15

申请号：EP09715282

申请日：2009-03-02

申请人： TENNANT CO

发明人： WILMO MICHAEL STEWART ,  BASHAM MICHAEL THOMAS ,  ARDITO MICHAEL SHAWN ,  WELLENS RICHARD WILLIAM

IPC分类号： E01H1/00 ,  A47L11/40

CPC分类号： A46B13/00 ,  A46B2200/302 ,  A47L11/4033 ,  E01H1/0854

公开(公告)号：EP2262954A4

公开(公告)日：2012-08-15

申请号：EP09715686

申请日：2009-03-02

申请人： TENNANT CO

发明人： WILMO MICHAEL STEWART

IPC分类号： E01H1/00

CPC分类号： A47L11/24 ,  A47L11/40 ,  E01H1/0854

摘要： A mobile surface maintenance machine with a debris hopper and a filter module providing at least two filter stages for separating dust and debris within the debris hopper, the filter module including a filter shaking mechanism and a housing adapted to seal against the upper opening of the debris hopper, and wherein the debris hopper is removed from air communication with the exhaust fan when the debris hopper is in a debris dump configuration and is returned to air communication with the exhaust fan when the debris hopper is lowered into an operational configuration.