US 12,252,304 B2
Tethered, hinged closure with modified primary slit
Richard D. Lohrman, Montgomery, IL (US)
Assigned to Silgan White Cap LLC, Downers Grove, IL (US)
Filed by Silgan White Cap LLC, Downers Grove, IL (US)
Filed on Feb. 23, 2023, as Appl. No. 18/173,544.
Application 18/173,544 is a continuation of application No. PCT/US2023/062209, filed on Feb. 8, 2023.
Claims priority of provisional application 63/309,126, filed on Feb. 11, 2022.
Prior Publication US 2023/0257169 A1, Aug. 17, 2023
Int. Cl. B65D 41/34 (2006.01); B65D 55/16 (2006.01)
CPC B65D 41/3428 (2013.01) [B65D 55/16 (2013.01); B65D 2401/30 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A closure comprising:
a top panel including an upper surface and a lower surface;
a rotational axis about which the top panel is centered;
a cylindrical wall extending from the lower surface of the top panel to a bottom edge of the cylindrical wall;
an inner surface of the cylindrical wall facing towards the rotational axis;
a retention band pivotally coupled to the cylindrical wall, the retention band attached to the bottom edge by a plurality of frangible members, the plurality of frangible members providing a visual indication, when broken, that the closure has been opened;
a first line of weakness that separates the cylindrical wall and the retention band, wherein the plurality of frangible members extend across the first line of weakness and connect the cylindrical wall and the retention band, the first line of weakness extending more than 180 degrees circumferentially with respect to the rotational axis from a first end to a second end, wherein the first end and the second end are separated by a first angle with respect to the rotational axis, wherein the first angle is between 12 degrees and 30 degrees;
a second line of weakness that extends less than 180 degrees circumferentially with respect to the rotational axis, wherein the second line of weakness is distinct from the first line of weakness;
a first tether that couples the cylindrical wall to the retention band, wherein the first tether extends between the second line of weakness and the first end of the first line of weakness; and
a second tether that couples the cylindrical wall to the retention band, wherein the second tether extends between the second line of weakness and the second end of the first line of weakness.