Patent ID: 6012311
Filing Date: 2000-01-11
Classification: E05B,Y10T

Abstract:
An assembly, comprising:an enclosure having a front wall;a cylindrical shell mounted in said front wall with a front opening of said shell proximate said front wall, with said cylindrical shell also having a rear opening;a removable plug received within said front opening of said shell and being rotatable in said shell and having tumbler pins which engage said shell, said removable plug including a key slot and further adapted to include a locking bar disposed on an outer circumferential surface of said removable plug, with said locking bar being retractable when a correctly bitted key is inserted, said removable plug including a central rear shaft and an engagement portion thereon, said engagement portion having a pie-shaped stop member and a pie-shaped engagement member on said central rear shaft, with said pie-shaped stop and engagement members being directly adjacent one another and both extending over an arc of at least ninety degrees;a connecting member rotatably held within said shell, with said connecting member including a shaft extending through said rear opening in said shell, a semi-circular inner engagement member including an operation key slot capable of receiving an end of an operation key, and a circumferential wall extending around an arc of greater than ninety degrees and an overhanging flange extending inward from said circumferential wall; anda locking plate fixed to said shaft and rotatable therewith, with said shell including a limiting projection which limits rotational movement of said locking plate;wherein said removable plug can be rotated until said pie-shaped stop member of said rotatable plug contacts said connecting member, with said pie-shaped engagement member of said removable plug positioned under said flange, said removable plug being rotatable so that said pie-shaped engagement member can be removed from under said flange to permit said removable plug to become disengaged from said connecting member and removed from said shell.