公开(公告)号：US3568365A

公开(公告)日：1971-03-09

申请号：US3568365D

申请日：1969-05-16

Applicant: OVERHEAD DOOR CORP

Inventor： PEMBERTON PAUL E ,  THORNBURG GAIL L ,  HARRIS DONALD S

IPC: E05D15/20 ,  E05D15/38

CPC classification number: E05D15/38 ,  E05D15/20 ,  E05Y2900/132

Abstract: APPARATUS ADAPTED TO SUPPORT A ONE-PIECE, UPWARDLY ACTING DOOR FOR MOVEMENT BETWEEN A SUBSTANTIALLY HORIZONTAL, OPENED POSITION AND A SUBSTANTIALLY UPRIGHT CLOSED POSITION CLOSELY ADJACENT WALL MEANS HAVING AN OPENING CLOSED BY SAID DOOR WHEN IN THE CLOSED POSITION. THE APPARTUS INCLUDES A PAIR OF SPACED, HORIZONTAL AND PARALLEL TRACKS FOR GUIDING A PAIR OF ROLLERS MOUNTED ON THE UPPER

END OF THE DOOR AND A PAIR OF SPACED, PARALLEL AND UPRIGHT TRACKS FOR GUIDING A PAIR OF ROLLERS MOUNTED ON THE LOWER END OF THE DOOR. THE TWO PAIRS OF TRACKS HAVE CURVED END PORTIONS WHEREBY THE ENTIRE DOOR MOVES DOWNWARDLY AN ANGLE INTO THE CLOSED POSITION AGAINST THE WALL MEANS