EP 0918124 A1 19990526 - A key-change system for a cylinder lock
Title (en)
A key-change system for a cylinder lock
Title (de)
Schlüsselumstellungssystem für Zylinderschloss
Title (fr)
Système de changement de clé pou serrure à panneton
Publication
Application
Priority
JP 30802497 A 19971021
Abstract (en)
A key-change system for a cylinder lock wherein auxiliary tumblers (5) are interposed between upper tumblers (3) and bottom tumblers (4) and removed to enable the key-change, the key means including both a plurality of change keys (8), each having a recess (81) on the back for selectively removing one of the auxiliary tumblers (5), and a key having no such recess (81) on the back, said recesses and the tumbler aligning means of the key means being arranged in said change keys in such a way that use of one of said plurality of change keys and subsequent use of a further change key prevents re-use of said one change key previously used. <IMAGE>
IPC 1-7
IPC 8 full level
E05B 27/08 (2006.01); E05B 27/00 (2006.01)
CPC (source: EP)
E05B 27/005 (2013.01)
Citation (search report)
- [X] US 4440009 A 19840403 - SMITH JERRY R [US]
- [X] US 4741188 A 19880503 - SMITH JERRY R [US]
- [X] EP 0217586 A1 19870408 - DOM SICHERHEITSTECHNIK [DE]
- [A] EP 0250701 A2 19880107 - EVVA WERKE [AT]
- [A] US 3183692 A 19650518 - CHECK MATHIAS M
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98119879 A 19981020; JP 30802497 A 19971021