公开(公告)号：EP0006870A1

公开(公告)日：1980-01-23

申请号：EP78900038

申请日：1979-01-30

申请人： MOEHREN HANS HEINER

发明人： MOEHREN HANS-HEINER

IPC分类号： E01B3/00 ,  E01B3/20 ,  E01B27/18 ,  E01B3/02 ,  E01B3/28

CPC分类号： E01B3/00 ,  E01B3/20 ,  E01B27/18 ,  E01B2203/062 ,  E01B2203/067

摘要： A novel railroad crosstie (1) is disclosed comprising a cavity-reservoir (4) which serves as a container for small grade ballast or pea gravel which is automatically directed underneath the crosstie (1) in proportion to the settlement of the underlying ballast. New small grade ballast or pea gravel is automatically deposited as a result of the combined effects of gravity and the amplitude of vertical oscillation introduced by the wheel sets of passing trains.