Patent ID: 9550621
Date: 2017-01-24
CPC Classifications: B65B,B65D,B67D,Y10T

Claim:
1. A pressure control fill valve having an essentially cylindrical shape with a longitudinal axis, a side surface and a first end and a second end, comprising: a base at the second end, a first circumferential lip at the first end of the valve, and second circumferential lip separated from the base by a circumferential groove, and one or more recesses on the side surface of the valve extending from the first end through the first circumferential lip and to the second circumferential lip, and a cavity having one opening arranged at the base at the second end of the valve and extending from said base toward the first end of the valve, wherein the cavity is defined by a flexible wall that separates said cavity in the base from the one or more recesses on the side surface and wherein the cavity is vacant allowing deformation of the cavity upon application of pressure with the ability of the cavity to return to said cavity's original shape when said pressure is released, wherein the second circumferential lip is asymmetric about said second circumferential lip's circumference.