Patent ID: 8997534
Filing Date: 2015-04-07
Classification: E05B,E05C,Y10T

Abstract:
1. A door lock including a deadbolt and a latchbolt each movable between a thrown position and a refracted position, the lock comprising: an inside lever operable to move the latch bolt between the thrown position and the retracted position; an outside lever configured in one of a locked state and an unlocked state in which the outside lever is operable to move the latchbolt between the thrown and the retracted position; a thumbturn coupled to the deadbolt and movable between a first position in which the deadbolt is in the thrown position, the latchbolt is in the thrown position, and the outside lever is locked, a second position in which the deadbolt is in the retracted position, the latchbolt is in the thrown position, and the outside lever is locked, and a third position in which the deadbolt is in the retracted position, the latchbolt is in the thrown position, and the outside lever is unlocked; and a key-mechanism positioned on an outer side of the door and movable to transition the lock between a first state, a second state, and a third state, and wherein in the first state, the deadbolt is in the thrown position, the latchbolt is in the thrown position, and the outside lever is locked, in the second state the deadbolt is in the retracted position, the latchbolt is in the thrown position, and the outside lever is locked, and in the third state the deadbolt is in the retracted position, the latchbolt is in the retracted position, and the outside lever is unlocked.