Patent ID: 8550506

Claim:
A multipoint mortise lock mechanism for a swinging door, comprising: a central cassette assembly operably coupled to an upper remote locking point assembly and a lower remote locking point assembly by a remote locking linkage; the central cassette assembly including a housing, a deadbolt mechanism, a latchbolt mechanism, a remote locking point mechanism and an anti-slam mechanism; the anti-slam mechanism including an anti-slam plunger that when in an extended position engages the remote locking linkage via a boss and a slot and thereby inhibits movement of the remote locking linkage whereby deployment of the remote locking point assemblies is prevented, and wherein the anti-slam plunger comprises a rotatable paddle and a detent, the rotating paddle being shiftable between a first position in which the paddle presents a first sloped surface in a first direction and a second position in which the paddle presents a second sloped surface in a second opposing direction, the detent holding the paddle in either of the first position or the second position; and the deadbolt mechanism including a deadbolt extendible from the central cassette and being independently operable from the remote locking point mechanism, the deadbolt mechanism further comprising an anti-back drive mechanism.