公开(公告)号：US09839564B2

公开(公告)日：2017-12-12

申请号：US14983707

申请日：2015-12-30

Applicant: KOREA AIRPORTS CORPORATION

Inventor： Jae Bok Ryu ,  Sung Il Kim ,  Sang Ju Roh

IPC: A61G3/06 ,  B64F1/305 ,  G06Q50/00 ,  B60P1/43 ,  E04F11/00

CPC classification number: A61G3/061 ,  B60P1/43 ,  B64F1/305 ,  E04F11/002 ,  G06Q50/00

Abstract: An automatic slope adjusting device is provided herein. The automatic slope adjusting device may include a slope type footrest unit configured to form a sloped passage; and a driving unit configured to adjust an inclination angle of the slope type footrest unit, and a length of the slot type footrest unit in a forward-backward direction thereof.