Filter cap
OwnerCharles von Reis, Karlis Vizulisinventors
Life of this patent
Estimating the term…
Abstract
A venting closure (10) for containers (12) having a pour opening (14) defined by a circumferential rim (16) includes a top wall (20) having inner (22) and outer (24) surfaces. A side skirt (26) extends from the top wall (20) about the inner surface (22). A liner (28) is mounted adjacent the inner surface (22) for perfecting a seal between the top wall (20) and the circumferential rim (16) when the closure (10) is secured upon the rim (16) and over the opening (14). The liner (28) includes a gas impermeable non-hydrophobic portion (30) at least about the periphery of the liner (28) and an integral gas permeable hydrophobic portion (32) offset therefrom.
Claims12
A venting closure (10) for containers (12) having a pour opening (14) defined by a circumferential rim (16), said closure (10) comprising:
- a top wall (20) having an inner (22) and an outer (24) surface, a side skirt (26) extending from said top wall (20) about said inner surface (22) and liner means (28) mounted adjacent said inner surface (22) for perfecting a seal between said top wall (20) and the circumferential rim (16) when said closure (10) is secured upon the rim (16) and over the opening (14), characterized by said liner means (28) including a gas impermeable non-hydrophobic portion (30) at least about the radial periphery of said liner means (28) and an integral gas permeable hydrophobic portion (32) offset therefrom.
Dependencies are inferred from the claim text.