Lid opening and closing device for opening and closing an opening of a housing by a lid

作者: Mitsuru Kogami

DOI:

关键词: Front (military)Closing (real estate)Closed positionGeologyStructural engineering

摘要: A lid body is constituted so as to enable selectively take a closing preparation position wherein the moved forward housing frontward side with an approximately horizontal condition and projects front, closed opening portion of vertical condition, open backward condition.