Patent ID: 9457954
Filing Date: 2016-10-04
CPC Classification: B01D,B65D,Y10T

Claim Text:
1. A breather device for connection to a vessel containing a content, the breather device for inlet of air to the vessel and exit air from the vessel, the breather device comprising: (a) a filter holder having a top and a bottom; (b) a filter medium in the filter holder, the filter medium comprising a dessicant for passing the inlet air therethrough; (c) a cap connected to the top of the filter holder, the top cap having one or more inlet air check valves selectively biased to prevent air flow therethrough until the pressure in the vessel falls below a low pressure threshold; (d) a cap connected to the bottom of the filter holder, the bottom cap having one or more exit air outlet check valves selectively biased to open once the pressure in the vessel exceeds a high pressure threshold; (e) an air throughway in the bottom cap and connected to the bottom of the filter holder; and (f) a port coupled to or integral with the air throughway in the bottom cap for connecting the breather device to the vessel.