Disposable construction core

A core assembly for use in a lock cylinder formed to include an axially extending core-receiving chamber of figure-8 cross-section providing upper and lower chamber portions and including means extending into the lower chamber portion for actuating a lock assembly, the core assembly comprising

• a plug member configured to fit in the upper chamber portion, and
• an actuator member configured to rotate freely in the lower chamber portion, the actuator member including means for operably engaging the actuating means so that the lock assembly is actuable upon rotation of the actuator member in the lower chamber portion and means for ejecting the plug member from the upper chamber portion is response to withdrawal of the actuator member from the lower chamber portion, the plug member including at least one finger configured to extend into the lower chamber portion while the plug member is positioned in the upper chamber portion, the ejecting means including means for contacting the at least one finger during withdrawal of the actuator member from the lower chamber portion.

A core assembly for use in a lock cylinder formed to include an axially extending core-receiving chamber of figure-8 cross-section providing upper and lower chamber portions and including actuating means extending into the lower chamber portion for actuating a lock assembly, the core assembly comprising

• an actuator member configured to rotate freely in the lower chamber portion, the actuator member including means for operably engaging the actuating means so that the lock assembly is actuable upon rotation of the actuator member in the lower chamber portion, and
• engaging means separate from the lock cylinder for frictionally engaging the rotatable actuator member to retain the actuator member substantially in a predetermined axial position in the lower chamber portion upon communication of the actuator member and the engaging means, the engaging means being mounted in the upper chamber portion to extend in the lower chamber portion for yieldably blocking the actuator member against axial movement in the lower chamber portion.

A core assembly for use in a lock cylinder formed to include an axially extending core-receiving chamber of figure-8 cross-section providing upper and lower chamber portions and including means extending into the lower chamber portion for actuating a lock assembly, the core assembly comprising

• an actuator member configured to rotate freely in the lower chamber portion, the actuator member including means for operably engaging the actuating means so that the lock assembly is actuable upon rotation of the actuator member in the lower chamber portion, and
• means separate from the lock cylinder for retaining the actuator member substantially in a predetermined axial position in the lower chamber portion upon communication of the actuator member and the engaging means, the actuator member including an axially forwardly presented cam surface, the retaining means including a plug member configured to fit in the upper chamber portion, the plug member including means for yieldably abutting the cam surface to limit axially outward movement of the actuator member during withdrawal of the actuator member from the lower chamber portion as long as the withdrawal-inducing force applied to the actuator member remains less than a predetermined maximum magnitude.

A core assembly for use in a lock cylinder formed to include an axially extending core-receiving chamber of figure-8 cross-section providing upper and lower chamber portions and including means extending into the lower chamber portion for actuating a lock assembly, the core assembly comprising

• an actuator member configured to rotate freely in the lower chamber portion, the actuator member including means for operably engaging the actuating means so that the lock assembly is actuable upon rotation of the actuator member in the lower chamber portion, and
• a plug member configured to fit in the upper chamber portion, the plug member including means for applying biasing force against the actuator member of a predetermined magnitude to inhibit free rotation of the actuator member relative to the lock cylinder during operation of the actuation means by a user, thereby providing a characteristic tactile feel of the actuator member apparent to the user during manual rotation of the actuator member.

A core assembly for use in a lock cylinder formed to include an axially extending core-receiving chamber of figure-8 cross-section providing upper and lower chamber portions and an axially rearwardly facing surface communicating with the lower chamber, the core assembly comprising

• a plug member configured to fit in the upper chamber portion, the plug member including a pair of spaced-apart resilient fingers extending into the lower chamber portion upon positioning of the plug member in the upper chamber portion, and
• an actuator member configured to rotate freely in the lower chamber portion, the actuator member including means for splaying the pair of resilient fingers upon positioning of the actuator member in a predetermined position within the lower chamber portion so that at least one of the resilient fingers is moved to assume a position in confronting engageable relation to the axially rearwardly facing surface, thereby blocking withdrawal of the plug member from the upper chamber portion.