CEILING ARTICULATED GATE FOR APERTURES WITH ESPECIALLY LOW HEIGHT OF LINTEL Russian patent published in 2003 - IPC

FIELD: construction industry. SUBSTANCE: ceiling articulated gate for apertures with especially low height of lintel between upper edge of aperture subject to closing and ceiling zone bordering on it has door leaf comprising several panels articulated in sequence in direction of movement. Panels are mounted for movement by means of rollers placed on sides in first side guides approximately in vertical direction and due to arc-shaped joint in horizontal direction with exception of panel highest in closed position of gate which enters with its rollers in this position zone of upper edge of second guides located in parallel to horizontal sections of first guides facing them. Second rollers have end part which is slightly beneath horizontal with first section and is bent towards floor thorough angle exceeding 90 degrees with horizontal with its second part. Gate for opening and closing of door leaf is equipped with hand or motor drive which is so mounted that rollers of uppermost panel are placed for vertical movement and transition zones between first and second sections are fitted with separable springy member with deflecting surface to spring-load roller entering transition zone and to deflect it from one section to another. In process of closing uppermost roller pair is caught by end part of second guides while passing from first section to second section thanks to which collision with outer wall of end part facing gate form is absorbed and noise diminishes accordingly. EFFECT: improved shock absorption and diminished noise. 13 cl, 1 3 dwg