Claims
- 1. A tamper-evident closure for sealing an open-topped container having an external screw thread formed on a neck on the container and an outwardly projecting annular shoulder formed below the screw thread, the closure comprising:
- an internally threaded cap which may be removed from the container for dispensing the contents of the container,
- the cap comprising a top wall for extending across the open top of the container, an annular sidewall integrally joined to the top wall about the periphery of the top wall and depending therefrom, and an internal screw thread formed on the inside of the sidewall for engagement with the external screw thread on the container, and tamper-indicating means comprising a ring depending from the annular sidewall, said ring being located axially in vertical alignment with said sidewall and radially substantially within the confines of the sidewall so that downward forces during a capping operation do not separate the ring from the cap, said ring having an inner diameter greater than the outer diameter of said shoulder to pass axial therepast during a capping operation, a frangible slit section of reduced cross section in the upper portion of said ring to form breakable connections aligned vertically with the closure annular sidewall for detachably securing the ring to the sidewall, and a plurality of flat tabs bent upward and radially inward from the lower edge of the ring at a folded portion with inner ends of the tabs being disposed radially inwardly of the outer diameter of the shoulder, said upwardly and inwardly inclined tabs being positioned to center the closure relative to the container, said folded portions of said tabs being located at the bottom edge of said ring and being located in vertical alignment with said annular side wall, said inner ends of said tabs being flexed radially outwardly by the shoulder to slide past the shoulder during a capping operation and flexing radially inwardly about the folded portion and to positions for engaging the annular shoulder of the container during removal of the cap to prevent the tamper-indicating means from traveling upward beyond the annular shoulder with the cap and to break the ring away from the cap.
Parent Case Info
This is a continuation application of application Ser. No. 467,873 filed on Feb. 18, 1983 and now U.S. Pat. No. 4,506,795.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4407422 |
Wilde et al. |
Oct 1983 |
|
4418828 |
Wilde et al. |
Jul 1981 |
|
4469234 |
Deussen |
Sep 1984 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
49876 |
Apr 1982 |
EPX |
56-74445 |
Jun 1981 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
467873 |
Feb 1983 |
|