US 12,391,441 B2
Pressure relief assemblies and methods
David Prymula, Glenview, IL (US); and Bret Shankleton, Glenview, IL (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Appl. No. 17/927,226
Filed by ILLINOIS TOOL WORKS INC., Glenview, IL (US)
PCT Filed May 10, 2021, PCT No. PCT/US2021/031559
§ 371(c)(1), (2) Date Nov. 22, 2022,
PCT Pub. No. WO2022/240388, PCT Pub. Date Nov. 17, 2022.
Prior Publication US 2023/0219725 A1, Jul. 13, 2023
Int. Cl. B65D 51/16 (2006.01); B65D 83/70 (2006.01)
CPC B65D 51/1638 (2013.01) [B65D 83/70 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A closure for a pressurized container, comprising:
a plate with a top side and a bottom side;
a first notch that extends about a first axis along the top side; and
a second notch that extends about the first axis along the bottom side,
wherein the first and second notch form a membrane therebetween that is capable of being ruptured when a maximum pressure causes the membrane to rupture,
wherein at a first location the first notch defines a first minimum width measured parallel to a second axis that extends perpendicular to the first axis and the second notch defines a second minimum width measured parallel to the second axis,
wherein at a second location, disposed radially opposite the first location relative to the first axis, the first notch defines a third minimum width measured parallel to the second axis and the second notch defines a fourth minimum width measured parallel to the second axis,
wherein the first minimum width is larger than the second minimum width, and the third minimum width is different than the fourth minimum width,
wherein the first notch defines a first maximum depth measured parallel to the first axis and the second notch defines a second maximum depth measured parallel to the first axis, and
wherein the first maximum depth is greater than the second maximum depth.