Patent ID: 6868704

Claim:
A door lock apparatus, comprising the combination of: a trim plate securable to the outside of a door; a cylindrical lock assembly secured to said trim plate inwardly thereof when said plate is secured to the door, said cylindrical lock assembly including a latchbolt, a lock body having a retractor for said latchbolt, a spindle inwardly extending from said lock body and coupled to said retractor for unlatching said latchbolt upon rotation of said spindle, and a handle secured to said spindle for rotating said spindle; a cylinder lock including a housing and a cylinder actuable for rotation in said housing, said cylinder lock secured to said trim plate and outwardly extending from said lock body; a cam secured to said cylinder and rotatable therewith, said cam coupled to said retractor for unlatching said latchbolt upon rotation of said cylinder; a key insertable in said cylinder lock and rotatable for rotating said cylinder; said trim plate includes an opening with at least two spaced radial protrusions into said opening; said cylinder lock is a mortise lock cylinder including at least two longitudinal grooves therealong in registration with said at least two protrusions for rotationally orienting said mortise lock cylinder on said trim plate; and said rotatable cam includes an arcuate member having cam ends for operatively cooperating with said retractor upon rotation of said cam by said key inserted in said mortise lock cylinder, said arcuate member including peripheral notches at least one of which is alignable with a one of said grooves and a one of said protrusions when said cam is rotated by said key inserted in said mortise lock cylinder.