초록 ▼

Closure means for fastening a cover over the open end of a cylindrical drum, utilizing an annular split ring contoured to mate the cover to the drum. Included are a pair of depending lugs, extending from the ring on opposite sides of the split. Each of the lugs has a substantially parallel lateral f

Closure means for fastening a cover over the open end of a cylindrical drum, utilizing an annular split ring contoured to mate the cover to the drum. Included are a pair of depending lugs, extending from the ring on opposite sides of the split. Each of the lugs has a substantially parallel lateral face and a transverse opening therethrough. Spacer means are provided between the lugs. A tie bolt mounted through the openings of the lugs is tightened so the lugs are drawn together, contracting the ring. The spacer means between the lugs form a pivot point with the lugs, drawing the ring in a direction toward the pivot point.

대표청구항 ▼

[ What is claimed is:] [1.] Closure means for fastening a cover including an annular lip on the periphery thereof, over an annular bead rim located above circumferentially around the open end of a cylindrical drum, said closure means comprising:an annular split ring contoured to mate with said lip a

[ What is claimed is:] [1.] Closure means for fastening a cover including an annular lip on the periphery thereof, over an annular bead rim located above circumferentially around the open end of a cylindrical drum, said closure means comprising:an annular split ring contoured to mate with said lip and said bead;a pair of laterally spaced first and second depending lugs, extending outwardly from said ring on opposite sides of said split;each of said lugs having substantially parallel lateral faces and a transverse opening therethrough;a spacer extending from the lateral face of at least one of said lugs in a direction toward the other one of said lugs;a tie bolt having a threaded portion mounted through the openings of said lugs to extend therebetween;whereby in response to the tightening of said bolt, said lugs are drawn together contracting said ring, said spacer between said first and second lugs drawn together forming a pivot point, drawing said ring in a direction toward said pivot point.