Removable plug lock

Details Removable plug lock Removable plug lock

E - Fixed Constructions

05

B

E05B 27/00 (2006.01) E05B 9/08 (2006.01)

Patent

CA 2249988

A lock with a plug (2) removable from a housing (16) is disclosed. The plug (2) includes a restraining member (46) and a protrusion (40) which engages a concentric groove (52) formed into a plug housing. Intersecting the concentric groove is a longitudinal groove (50). Upon inserting an operation key the restraining member is forced into engagement with the concentric groove thereby preventing plug removal even upon alignment of the protrusion with the longitudinal groove (50). Upon inserting a removal key (42) the restraining member (46) is disengaged from the concentric groove so that the plug may be withdrawn upon rotationally aligning the protrusion (40) with the longitudinal groove (50). In this manner a simple and compact removable plug is provided to aid rapid lock re-keying.

Serrure avec un barillet (2) pouvant être retiré d'un boîtier (16). Le barillet (2) comporte un élément de retenue (46) et une bosse (40) qui s'engage dans la rainure concentrique (52) formée à l'intérieur du boîtier. Une rainure longitudinale (50) croise la rainure concentrique. Lorsqu'on insère dans la serrure une clé normale, elle force l'élément de retenue à s'engager dans la rainure concentrique, ce qui rend le retrait du barillet impossible même lorsque la bosse est alignée sur la rainure longitudinale (50). En revanche, lorsqu'on insère une clé de retrait (42), l'élément de retenue (46) se dégage de la rainure concentrique, permettant ainsi de retirer le barillet en alignant par rotation la bosse (40) sur la rainure longitudinale (50). Tout cela permet d'obtenir un barillet amovible simple et compact offrant la possibilité d'un changement de cylindre rapide.

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