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
Application
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
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)
- [XAY] GB 2172931 A 19861001 - CHUBB & SONS LOCK & SAFE CO
- [Y] DE 4327381 A1 19950216 - SCHULZE LOTHAR DR ING [DE], et al
- [A] DE 3720550 A1 19890105 - ZEISS IKON AG [DE]
- [A] EP 0412571 A2 19910213 - WAGNER MED GERAETE GMBH [DE]
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