Global Patent Index - EP 0849429 A1

EP 0849429 A1 19980624 - Safe re-locker

Title (en)

Safe re-locker

Title (de)

Notverriegelung für Wertbehälter

Title (fr)

Dispositif de condamnation pour coffre-fort

Publication

EP 0849429 A1 19980624 (EN)

Application

EP 97309114 A 19971113

Priority

GB 9626243 A 19961218

Abstract (en)

In a safe (102) having thermal re-lockers (108), each thermal re-locker (108) comprises two opposing springs which both act on a plunger (122) attached to a re-locking bolt (116) mounted within a tubular container (110). One spring is a memory metal spring (134) and the other is a non-memory metal spring (136). At room temperature the strength of the non-memory metal spring (136) is sufficient to hold the re-locking bolt (116) within the container (110). If a safe (102) comes under thermal attack, the temperature rises causing the re-locker (108) to be activated. The memory metal spring (134) becomes stiffer compressing the non-memory metal spring (136) and pushing out the re-locking bolt (116) so that it protrudes out of the container (110), and thereby prevents either a safe door (104) from being opened, or a safe boltwork mechanism (106) from being unlocked. Once the re-locker (108) has cooled down to room temperature, the memory metal spring (134) returns to its normal less stiff state thus bringing about retraction of the bolt (116). <IMAGE>

IPC 1-7

E05G 1/04; E05B 17/20; E05B 15/16

IPC 8 full level

E05C 1/04 (2006.01); E05B 65/00 (2006.01); E05G 1/04 (2006.01); E05B 15/16 (2006.01)

CPC (source: EP)

E05B 65/0082 (2013.01); E05B 51/005 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0849429 A1 19980624; GB 9626243 D0 19970205; JP H10246050 A 19980914; ZA 9710318 B 19980610

DOCDB simple family (application)

EP 97309114 A 19971113; GB 9626243 A 19961218; JP 32605197 A 19971127; ZA 9710318 A 19971114