초록 ▼

A leak-resistant plastic container and closure are disclosed, where the container has an open end, an inner periphery, an outer periphery, and a container flange extending around the inner periphery at the open end. The closure has a generally planar and circular inner lid, a spring extending around

A leak-resistant plastic container and closure are disclosed, where the container has an open end, an inner periphery, an outer periphery, and a container flange extending around the inner periphery at the open end. The closure has a generally planar and circular inner lid, a spring extending around an outer circumference of the inner lid, an arcuate flange receptacle extending around an outer circumference of the closure at a circumference outside the spring, where the flange receptacle has an inner surface and an outer surface, a secondary sealing bead, positioned on the inner surface of the flange receptacle, and a primary sealing bead, positioned on an outer surface of the flange receptacle and opposite the secondary sealing bead, where the spring exerts a sealing pressure against the container flange when the closure is placed on the open end of the container.

대표청구항 ▼

1. A leak-resistant plastic container and closure, the container comprising:an open end;an inner periphery;an outer sidewall; andan inwardly curving container flange extending inwardly and downwardly from said sidewall and around said inner periphery at said open end and terminating in a free edge;

1. A leak-resistant plastic container and closure, the container comprising:an open end;an inner periphery;an outer sidewall; andan inwardly curving container flange extending inwardly and downwardly from said sidewall and around said inner periphery at said open end and terminating in a free edge; and said closure comprising:a generally planar and circular inner lid;a spring extending around an outer circumference of said inner lid and exerting a sealing pressure against said container flange and a portion of said sidewall when said closure is secured on the open end of said container;an arcuate flange receptacle extending around an outer circumference of said closure at a circumference outside said spring, wherein said flange receptacle comprises an inner surface and an outer surface;a secondary sealing bead, positioned on said inner surface of said flange receptacle for engaging said flange free edge when a primary seal dislodging force is applied to a primary seal; anda primary sealing bead, positioned on an outer surface of said flange receptacle and opposite said secondary sealing bead for engagement with a complementary bead receiving formation on said container,wherein said primary sealing bead and said complementary bead receiving formation forming a primary seal there between.2. The leak-resistant plastic container and closure of claim 1, wherein said container flange and said secondary sealing bead cooperate to prevent seal disrupting inward deformation of said flange.3. The leak-resistant plastic container and closure of claim 1, further comprising an outer skirt, said outer skirt comprising a locking ridge undercut below said primary sealing bead; wherein at least a portion of said outer skirt below said locking ridge undercut forms a tamper evident band and wherein said locking ridge undercut is a tear point for said tamper evident band.4. The leak-resistant plastic container and closure of claim 3, further comprisingbreak points in said tamper-evident band; anda push-up tab positioned on said outer skirt between said break points.5. The leak-resistant plastic container and closure of claim 1, said container further comprising:a first undercut, positioned near said open end of said outer periphery, operative to accept said primary sealing bead, thereby forming the primary seal; and a locking ridge, positioned on said container below said first undercut and extending outwardly from said outer periphery, operative to hold said closure at a recessed portion.6. The leak-resistant plastic container and closure of claim 1, wherein the container flange and said secondary sealing bead cooperate to prevent seal disrupting inward deformation of said flange.