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:
Jul. 27, 2010
Filed:
Jan. 06, 2005
Kazuya Koyama, Tochigi, JP;
Naoki Matsuda, Hyogo, JP;
Masato Hirooka, Hyogo, JP;
Masayuki Yamazaki, Hyogo, JP;
Kazuya Koyama, Tochigi, JP;
Naoki Matsuda, Hyogo, JP;
Masato Hirooka, Hyogo, JP;
Masayuki Yamazaki, Hyogo, JP;
Daicel Chemical Industries, Ltd., Sakai-shi, JP;
Fuji Filter Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A filter for a gas generator in which the manufacture is simple, which has an adequate filter performance and cooling performance and, furthermore, which has high reliability with little damage caused in actuation of the gas generator, is provided. The filter for an air bag gas generator comprises a first layer formed from helically wound wire rods having a cross-sectional area of 0.03 to 0.8 mm, in such a way that the pitch angle of wire rods vertically superposed in the radial direction is symmetrical, and a second layer that exists on the outer side of the first layer in the radial direction and is formed to have a finer filter particle size than the first layer using a wire rod narrower than the wire rod that forms the first layer.