(19)
(11) EP 0 732 472 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.03.1997 Bulletin 1997/13

(43) Date of publication A2:
18.09.1996 Bulletin 1996/38

(21) Application number: 96103334.7

(22) Date of filing: 04.03.1996
(51) International Patent Classification (IPC)6E05B 65/00
(84) Designated Contracting States:
AT DE ES NL

(30) Priority: 16.03.1995 IT BO950043

(71) Applicant: C.I.S.A. Costruzioni Italiane Serrature Affini S.p.A.
I-48018 Faenza (Ravenna) (IT)

(72) Inventor:
  • Errani, Deo
    48018 Faenza (Prov. of Ravenna) (IT)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano & Associati S.r.l. Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) Improved device for locking bolts in a safety door


(57) The device for locking the bolt in a safety door, comprises a casing (1) provided with a hole (16) for the passage of a bolt (17) and adapted to be arranged in a seat formed in the upper edge of a door hinged to a door frame which is fixed to a wall. A spring-loaded sensor (19) is slideable in the casing (1) and has a chamfered end (30) which cooperates with the upper transverse member (33) of the door frame. A transversely movable pin (25) is arranged in the sensor (19), and has opposite ends engaged in slots (26,27) of the casing (1) that are shaped so as to lock the bolt (17) in a retracted position when the sensor (19) is expelled from the casing (1) by the action of a spring (31). The casing (1) is accommodated loosely in a cavity (14) formed in the upper rail of the door and comprises a flange (5) in which holes (6,7) are formed. The holes (6,7) are loosely engaged by bushes (8,9) which are rigidly coupled to a plate (10) that is superimposed on the flange (5), and are fixed by screws (11) to the upper rail of the door. The bushes (8,9) have a height which is greater than the thickness of the flange (5), so that by abutting against the upper rail of the door they allow tilting movements of the casing (1) in the cavity (14).







Search report