Patent ID: 7152442

Claim:
A method of installing a mortise lock in a reversible storm door, the method comprising the steps of: providing a storm door having first and second opposing facing walls joined by left and right sidewalls; providing a lock body including a dead bolt assembly and a cam including a cam through hole, wherein rotation of the cam actuates the dead bolt assembly; providing first and second escutcheon plates having opposing holes and adapted for covering an exterior portion of the storm door; providing a key cylinder with a substantially circular cross-section, the key cylinder including a spindle, a decorative portion opposite the spindle and attached to the key cylinder with a substantially circular cross-section greater than the key cylinder; securing the key cylinder to the first escutcheon plate by placing the spindle and key cylinder through a hole in the first escutcheon plate that is larger in cross-section than the key cylinder, but smaller than the cross-section of the decorative portion, and by placing a clip into a channel in the key cylinder opposite the decorative portion to engage the first escutcheon plate; forming a mortise in only one of the left or right sidewalls of the storm door; forming a round hole through the storm door wherein the round hole intersects with the mortise and is larger than a cross-section of the spindle, but smaller than the first escutcheon plate; installing the lock body in the mortise; installing the first escutcheon plate such that the spindle goes into the round hole and intersects with the cam through hole; providing a thumb turn button, the thumb turn button including a mounting slot; rotatably securing the thumb turn button to the second escutcheon plate using a retaining ring: and installing the second escutcheon plate such that the spindle is received in the mounting slot of the thumb turn button; whereby the storm door is reversible without flipping the door.