发明名称 Helicopter stairs
摘要 A stair construction for a vehicle is attached to the vehicle at a position below a vehicle door and supports the weight of users entering and exiting the vehicle. In the event of forces that tend to bend or push the stairs upward into interference with the door, the stairs will fracture and break or generally predictably deform so that they do not interfere with the door.
申请公布号 US5806627(A) 申请公布日期 1998.09.15
申请号 US19950530596 申请日期 1995.09.19
申请人 WILSON, THOMAS GRAY 发明人 WILSON, THOMAS GRAY
分类号 B64C1/24;B64D9/00;(IPC1-7):B64D9/00 主分类号 B64C1/24
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