US 12,297,921 B2
Rollover vent valve assembly
Michael A. Niver, Plymouth, WI (US); and Michael J. Holz, West Bend, WI (US)
Assigned to Bemis Manufacturing Company, Sheboygan Falls, WI (US)
Appl. No. 18/546,237
Filed by Bemis Manufacturing Company, Sheboygan Falls, WI (US)
PCT Filed Feb. 11, 2022, PCT No. PCT/US2022/016129
§ 371(c)(1), (2) Date Aug. 11, 2023,
PCT Pub. No. WO2022/174042, PCT Pub. Date Aug. 18, 2022.
Claims priority of provisional application 63/148,325, filed on Feb. 11, 2021.
Prior Publication US 2024/0159324 A1, May 16, 2024
Int. Cl. F16K 24/04 (2006.01); B60K 15/035 (2006.01); B60K 15/03 (2006.01)
CPC F16K 24/044 (2013.01) [B60K 15/035 (2013.01); B60K 2015/03282 (2013.01); B60K 2015/03289 (2013.01); Y10T 137/053 (2015.04); Y10T 137/0874 (2015.04); Y10T 137/6004 (2015.04)] 20 Claims
OG exemplary drawing
 
1. A valve assembly configured to be coupled to a container, the valve assembly comprising:
a body engageable with the container, the body having a top end, a bottom end spaced from the top end, an internal cavity defined between the top and bottom ends, and a vent outlet;
a wall dividing the internal cavity into a first chamber and a second chamber, wherein the first chamber defined between the bottom end of the body and the wall, the second chamber defined between the top end of the body and the wall, and the second chamber is in communication with the vent outlet;
a first aperture extending through the wall between the first chamber and the second chamber;
a second aperture extending through the wall between the first chamber and the second chamber, the second aperture offset from the first aperture;
an umbrella valve coupled to the wall, the umbrella valve having a central passage extending through the first aperture and an umbrella portion extending radially outwardly from the central passage, the umbrella portion being positioned within the second chamber and configured to engage a top side of the wall to selectively seal the second aperture; and
a float positioned within the first chamber, the float having an engagement portion that is insertable into the central passage of the umbrella valve to seal the first aperture,
wherein the umbrella portion is configured to deform away from the top side of the wall to vent a gas along a first pathway from the first chamber to the vent outlet via the second aperture in response to pressure within the first chamber exceeding a cracking pressure of the umbrella valve.