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:
May. 04, 1999
Filed:
Apr. 25, 1997
Naoki Yamamoto, Fuji, JP;
Kazuyoshi Nishijima, Fuji, JP;
Kazuhiro Kaneko, Fuji, JP;
Mikio Ochiai, Fuji, JP;
Nihon Plast Co., Ltd., Shizuoka, JP;
Abstract
An air bag system is provided that limits the forward projection of the air bag and reduces production costs wherein folded portions are formed by folding the peripheral portion of a flatly spread air bag along folding lines which are provided at specified locations. The formed folded portions are constrained by stitched portions which are formed by stitching folded-down portions with thread. The air bag is then folded into a size so as to be constrained in a cover. When gas is injected from an inflator, the air bag tears the cover and projects forward and at the same time the stitched portions limit the distance by which the air bag projects forward. As the internal pressure in the air bag increases, the stitched portions break and the folded portions are unfolded so that the air bag expands radially.