초록 ▼

A lock is disclosed having a lock barrel with an opening and a key plug rotatable within the opening. The plug is rotatable between first and second operative positions and a third position in which the plug can be withdrawn from the barrel. A tab on the plug abuts a barrel shoulder to hold the plug

A lock is disclosed having a lock barrel with an opening and a key plug rotatable within the opening. The plug is rotatable between first and second operative positions and a third position in which the plug can be withdrawn from the barrel. A tab on the plug abuts a barrel shoulder to hold the plug in the barrel except when the plug is in the third position, where the tab is aligned with an axial slot to permit axial withdrawal of the plug from the barrel. At least one tumbler is adapted to lock the plug against turning, and another tumbler is adapted to prevent the plug from turning to the third position and to allow rotation between the first and second positions. One key operates the one tumbler to permit rotation between operative positions and a second key operates the other tumbler to permit axial withdrawal of the plug from the barrel.

대표청구항 ▼

A lock comprising: a lock barrel with an opening therein; a key plug rotatable within the barrel opening between first and second operative positions and a third position in which the plug can be withdrawn from the barrel; a first tumbler adapted to lock the plug against turning within the barrel; a

A lock comprising: a lock barrel with an opening therein; a key plug rotatable within the barrel opening between first and second operative positions and a third position in which the plug can be withdrawn from the barrel; a first tumbler adapted to lock the plug against turning within the barrel; a second tumbler adapted to prevent the plug from turning to the third position and allowing rotation between the first and second positions; an annular slot in the barrel adapted to receive the second tumbler as the plug is turned between the first and second positions; a shoulder with an axial slot in the barrel; and a tab on the plug, said tab abutting the barrel shoulder to hold the plug therein during turning between the first and second positions, and said tab further being aligned with the axial slot when the plug is in the third position.