专利检索 ap:("David B. MacDougall") AND inv:"David B. MacDougall" 第 1 页

1.

发明授权
Computing the length of a railway vehicle or a train of such vehicles 失效
标题翻译：计算铁路车辆或这种车辆的火车的长度

公开(公告)号：US5036478A

公开(公告)日：1991-07-30

申请号：US337503

申请日：1989-04-13

申请人： David B. MacDougall

发明人： David B. MacDougall

IPC分类号： B61L1/14 , B61L1/16

CPC分类号： B61L1/14 , B61L1/16

摘要： In a railway signalling system, the length of a vehicle or train is computed by on board measurement of the distance travelled between detecting the passage of the front of the vehicle or train past a fixed point and detecting the passage of the rear of the vehicle or train past the same fixed point or a fixed point a known distance from the first.