Movable trackways for tunnels and method for moving tunnel flooring

Invention Grant

US3138327A Movable trackways for tunnels and method for moving tunnel flooring 失效

Title translation: 隧道可移动轨道和移动隧道地板的方法

Patent Title: Movable trackways for tunnels and method for moving tunnel flooring
Patent Title (中): 隧道可移动轨道和移动隧道地板的方法
Application No.: US16623962

Application Date: 1962-01-15
Publication No.: US3138327A

Publication Date: 1964-06-23
Inventor: DONOVAN JACOBS J
Applicant: DONOVAN JACOBS J
Assignee: Jacobs J Donovan
Current Assignee: Jacobs J Donovan
Priority: US16623962 1962-01-15
Main IPC: E21D9/12
IPC: E21D9/12

Public/Granted literature

Information query

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IPC分类:

E	固定建筑物
E21	土层或岩石的钻进；采矿
E21D	竖井；隧道；平硐；地下室（土壤调节材料或土壤稳定材料入C09K17/00；采矿或采石用的钻机、开采机械、截割机入E21C；安全装置、运输、救护、通风或排水入E21F）
E21D9/00	衬砌或不衬砌的隧道或平硐；其掘进的方法或设备(衬砌物本身入E21D11/00；防岩石崩塌或雪崩的穿廊入E01F7/04）；隧道、平硐的设计布置
E21D9/12	.清除或运走已采掘物料或矸石的装置；工作或装载平台(地下运输入E21F13/00)