Electric latch mechanism

A lockset, comprising:

• a latchbolt having a projected position and a depressed position, wherein the latchbolt is biased toward the projected position;
• a roller engaged with the latchbolt such that movement of the latchbolt from the projected position toward the depressed position drives the roller from a first position to a second position, wherein the roller is configured retain the latchbolt in the projected position when movement of the roller from the first position to the second position is blocked;
• a locking sleeve including a blocking surface and a first recess, the locking sleeve having a locking position in which the blocking surface is aligned with the roller and prevents movement of the roller from the first position to the second position, the locking sleeve having a first unlocking position in which the first recess is aligned with the roller and permits movement of the roller from the first position to the second position;
• and
• a manual actuator operably connected with the locking sleeve and operable to move the locking sleeve from the locking position to the first unlocking position.

A latchbolt assembly, comprising:

• a housing assembly comprising an aperture;
• a roller seated in the aperture for movement between a first position and a second position;
• a latchbolt mounted to the housing assembly for movement between a projected position and a depressed position, wherein the latchbolt includes a ramp configured to drive the roller from the first position to the second position as the latchbolt moves from the projected position toward the depressed position, and wherein engagement between the ramp and the roller prevents movement of the latchbolt from the projected position to the depressed position when the roller is blocked from moving from the first position to the second position;
• and
• a locking sleeve movably mounted between the inner housing and the outer housing, the locking sleeve comprising:
• a blocking surface that, when aligned with the roller, blocks movement of the roller from the first position to the second position, wherein the blocking surface is aligned with the roller when the locking sleeve is in a locking position;
• a first recess that, when aligned with the roller, permits movement of the roller from the first position to the second position, wherein the first recess is aligned with the roller when the locking sleeve is in a first unlocking position;
• and
• a second recess that, when aligned with the roller, permits movement of the roller from the first position to the second position, wherein the second recess is aligned with the roller when the locking sleeve is in a second unlocking position;
• wherein the locking sleeve is configured to be linearly driven between the locking position and the first unlocking position;
• and
• wherein the locking sleeve is configured to be rotated between the locking position and the second unlocking position.