US6273464B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas producer for air bag
Assignee: Daicel Corp
•
Filing: 1996-10-29
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Granted: 2001-08-14
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Expires: 2016-10-29
Abstract
Abstract A gas generator for an airbag has a reduced number of components and in which an automatic ignition material can ignite at an appropriate time. This gas generator includes a housing, an ignition unit accommodating chamber in the housing, an ignition unit installed in the ignition unit accommodating chamber, a gas generating material, and a cooling and purifying unit. The ignition unit includes a transfer charge container and an igniter. The transfer charge container has a cup containing a transfer charge and a cover hermetically sealing the cup. The igniter is activated by a signal to ignite the transfer charge, and a generated gas is introduced into an airbag to protect an occupant against an impact. The transfer charge container includes a cup part and a cover part, either the bottom of the cup part or the cover part are outwardly curved to form an outwardly convex surface. The container is resiliently held between a top wall portion of the ignition unit accommodating chamber and the igniter.
Inventors
- 👤 Masakazu Tokuda
- 👤 Akihisa Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/264; B60R21/2644; B60R2021/26064
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A gas generator for an airbag, comprising: a housing; an ignition unit accommodating chamber formed in said housing, said chamber being defined at least by a wall; an igniter provided in said ignition unit accommodating chamber, a head portion of said igniter opposing said wall; and a transfer charge container provided in said ignition unit accommodating chamber, said container making a direct contact with said wall at a first portion thereof and making contact with the head portion of said igniter at a second portion thereof, said second portion being formed with a resilient convex portion convexed from an inside to an outside of said transfer charge cup, said convex portion resiliently deflecting from the force of the igniter.
Claim 2
Dependent Claim
119 words
A gas generator for an airbag, comprising: a housing; an ignition unit accommodating chamber formed in said housing, said chamber being defined at least by a wall; an igniter provided in said ignition unit accommodating chamber, a head portion of said igniter opposing said wall; and a transfer charge container provided in said ignition unit accommodating chamber, said container making a direct contact with said wall at a first portion thereof and making contact with the head portion of said igniter at a second portion thereof, said second portion being formed with a resilient convex portion convexed from an inside to an outside of said transfer charge cup, said convex portion resiliently deflecting from the force of the igniter.
Claim 3
Dependent Claim
54 words
The gas generator according to claim 1 , wherein said transfer charge container includes a cup portion for accommodating a transfer charge therein, and a cover portion for hermetically closing said cup portion, wherein said resilient convex portion is formed in one of a end face of said cup portion and said cover portion.
Claim 4
Dependent Claim
18 words
The gas generator according to claim 1 , wherein said wall is an inner surface of said housing.
Claim 5
Dependent Claim
31 words
The gas generator according to claim 3 , wherein said ignition unit accommodating chamber is defined by the inner surface of the housing and a cylindrical member provided in said housing.
Claim 6
Dependent Claim
30 words
The gas generator according to claim 1 , wherein said cup portion makes contact with said wall, and said cover portion makes contact with the head portion of said igniter.
Claim 7
Dependent Claim
27 words
The gas generator according to claim 5 , wherein a diameter of the head portion of said igniter is smaller than a diameter of said cover portion.
Claim 8
Dependent Claim
129 words
A gas generator for an airbag, comprising: a housing; an ignition unit accommodating chamber formed in said housing, said chamber being defined at least by a wall; an igniter provided in said ignition unit accommodating chamber, a head portion of said igniter opposing said wall; a transfer charge container provided in said ignition unit accommodating chamber, said container making a direct contact with said wall at a first portion thereof and making contact with the head portion of said igniter at a second portion thereof, said container having a resilient convex portion formed in one of said first portion and said second portion, said convex portion resiliently deflecting from the force of the igniter; and an automatic ignition material accommodated in said transfer charge container adjacent said first portion.
Claim 9
Dependent Claim
129 words
A gas generator for an airbag, comprising: a housing; an ignition unit accommodating chamber formed in said housing, said chamber being defined at least by a wall; an igniter provided in said ignition unit accommodating chamber, a head portion of said igniter opposing said wall; a transfer charge container provided in said ignition unit accommodating chamber, said container making a direct contact with said wall at a first portion thereof and making contact with the head portion of said igniter at a second portion thereof, said container having a resilient convex portion formed in one of said first portion and said second portion, said convex portion resiliently deflecting from the force of the igniter; and an automatic ignition material accommodated in said transfer charge container adjacent said first portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-08-13 | 2005-02-12 | 2005-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-13 | 2009-02-12 | 2009-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-13 | 2013-02-12 | 2013-08-14 | $7700.00 | Window Closed / Lapsed |