초록 ▼

A cylindrical "shell and plug" assembly has the plug rotatably received within the shell. The plug has a central rear shaft and an engagement portion thereon. The engagement portion has a pie-shaped stop member and a pie-shaped engagement member. A connecting member rotatably held within the shell h

A cylindrical "shell and plug" assembly has the plug rotatably received within the shell. The plug has a central rear shaft and an engagement portion thereon. The engagement portion has a pie-shaped stop member and a pie-shaped engagement member. A connecting member rotatably held within the shell has an inner engagement that can engage the pie-shaped engagement member and an operation key slot capable of receiving an end of an operation key. The plug can be rotated until the engagement member is positioned behind the flange to retain the plug with the connecting member, and the plus can be rotated so that the engagement member can be positioned away from the flange, thereby permitting the plug to become disengaged from the connecting member.

대표청구항 ▼

[ What is claimed is:] [1.] 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

[ What is claimed is:] [1.] 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.