Key ejector lock

A key ejector lock which comprises:

• a tubular barrel having an internal shouldered portion defining rearwardly opening circumferentially spaced notches,
• a tubular front end plug rotatably mounted in said barrel and having a front end wall, a cylindrical tubular side wall, and a keyway extending through the front end wall for operation of the plug by a key,
• said side wall having two diametrically opposed engagement slots extending longitudinally therethrough from the rear end thereof,
• a rear end plug rotatably mounted in said barrel and adapted for operative connection to a locking member,
• said rear end plug having a non-circular central slideway and two outer slideways open to the central slideway and extending outwardly from opposite sides thereof, said slideways extending longitudinally in said rear end plug from the front end thereof,
• a rotatable driver interposed between said plugs and mounted for axial reciprocal movement in said barrel,
• said driver having a head and a non-circular elongated body extending rearwardly from the head,
• said driver also having two lugs extending outwardly from opposite side of said head and integral therewith, and two wings extending outwardly from opposite sides of said body longitudinally therealong and integral therewith and with said lugs,
• said lugs and said wings being received in respective said engagement slots to provide a sliding drive connection between said front end plug and said driver,
• said driver body and said wings being received in said central and outer slideways, respectively, to provide a sliding drive connection between said driver and said rear end plug,
• said lugs being removably received in respective ones of said notches for securing said rear end plug in respective locked and unlocked rotational positions,
• a first spring interposed between said rear end plug and said driver and resiliently urging said driver and thereby said lugs forwardly in said barrel towards said shouldered portion,
• a key ejector received in said front end plug for axial reciprocal movement therein between the front end plug and said driver and engaged by a key inserted through said keyway,
• and a second spring interposed between said driver and said key ejector and resiliently urging said key ejector forwardly in said barrel,
• whereby insertion of a key in said keyway serves to move said key ejector rearwardly into abutting engagement with said driver, to thereby move said lugs rearwardly of said notches and free the rotatable parts for rotation and enable the key to rotate said front end plug for rotating said rear end plug between said locked and unlocked positions thereof, and said key ejector acts to eject the key when released in any rotational position thereof.