The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Oct. 14, 2004
Alan Bradburn, Staffordshire, GB;
Alan Bradburn, Staffordshire, GB;
Autoliv Development AB, Vargarda, SE;
Abstract
An inflatable airbag is disclosed which defines an inflatable chamber. The airbag generally includes an inner elastic membrane provided in the peripheral wall of the airbag and a vent-hole formed through the elastic membrane. An outer membrane is provided on the outside of the airbag that extends across at least part of the inner membrane and the vent-hole. The outer membrane defines a pucker over the inner membrane and the vent-hole. The pucker is open so as to define an outlet flow path from the vent-hole when the inner membrane is spaced from the pucker. The inner membrane is configured to stretch and seal against the pucker around the vent-hole when the internal pressure within the inflatable chamber exceeds a predetermined value.