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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0519110 (1995-08-25) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 19 인용 특허 : 6 |
Precast concrete panels are laid end to end on the field sides and between the rails of a track to form a grade crossing. In one embodiment, the panels are screwed to wooden rails upon which they rest. In another embodiment, straps are used to bolt the ends of adjacent panels together to form an int
A grade crossing on a roadway intersected by a pair of railroad tracks supported on ties, said grade crossing comprising: a pair of precast concrete panels laid end to end between such rails on such ties, each of said panels including a recess cast into an upper surface thereof; and a strap substant
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