Abstract: A combined lock and latch for use with an exterior compartment door on a recreational vehicle has a cylindrical barrel and a rotatable plug mounted within an axial opening formed in the barrel. A number of spring-biased, key retractable tumblers extend through the plug and are received in a narrow slot formed in the barrel to prevent the plug from rotating relative to the barrel when the plug is in a locked position. A metal cam having mutually perpendicular legs is mounted at one end of the key plug, with one of the cam legs engaging a fixed keeper when the plug is in the locked position. An arcuate groove is formed on the barrel and receives the tumblers when the key plug is in latched and unlatched positions. The groove sweeps through approximately 90 degrees and allows the plug to be freely rotated without the use of a key. A second leg on the metal cam engages the keeper when the key plug is the latched position.

Abstract: A lock is disclosed having a lock barrel with an opening and a key plug rotatable within the opening. The plug is rotatable between first and second operative positions and a third position in which the plug can be withdrawn from the barrel. A tab on the plug abuts a barrel shoulder to hold the plug in the barrel except when the plug is in the third position, where the tab is aligned with an axial slot to permit axial withdrawal of the plug from the barrel. At least one tumbler is adapted to lock the plug against turning, and another tumbler is adapted to prevent the plug from turning to the third position and to allow rotation between the first and second positions. One key operates the one tumbler to permit rotation between operative positions and a second key operates the other tumbler to permit axial withdrawal of the plug from the barrel.