Patent ID: 9725065
Date: 2017-08-08
CPC Classifications: B60R

Claim:
1. An apparatus comprising: a main body substantially enclosing an interior volume, the main body being elastically expandable to an inflated configuration; a vent aperture in the main body; and a vent cover at least partially overlapping the vent aperture, the vent aperture and the vent cover defining a passage from the interior volume to outside of the main body, wherein, in the inflated configuration of the main body and within a pressure threshold of the interior volume, the vent cover constricts the passage proportionately to a pressure increase in the interior volume of the main body, wherein the vent cover includes corrugations, the main body includes corrugations adjacent at least a portion of the vent aperture, and the corrugations of the vent cover and the main body are offset.