Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
274 words
A passive restraint system for a vehicle occupant using an air bag that can be inflated upon detection of a deceleration exceeding a certain threshold level, comprising: an inflator housing containing an inflator for producing gas for inflating an air bag and having a first opening from which gas produced from said inflator may be expelled; an air bag housing attached to said inflator housing, and having a second opening disposed so as to be communicated with said first opening of said inflator housing when said air bag housing is attached to said inflator housing, and a third opening placed opposite to said second opening; an air bag received in said air bag housing in a folded state, and adapted to be projected and deployed from said third opening of said air bag housing when said air bag is inflated by said gas, said air bag being provided with an open base end from which gas produced from said inflator may be introduced into said air bag to inflate the same; and said third opening being placed in an opening provided in a part of a vehicle body part, and closed by a lid member which can rupture when said air bag is deployed, said lid member being engaged by said vehicle body part by first engagement means which guides said lid member into alignment with said opening of said vehicle body part, and by said air bag housing by second engagement means which secures said lid member in said opening of said vehicle body part and resiliently allows a slight lateral movement of said lid member with respect to said vehicle body part.
Claim 2
Dependent Claim
274 words
A passive restraint system for a vehicle occupant using an air bag that can be inflated upon detection of a deceleration exceeding a certain threshold level, comprising: an inflator housing containing an inflator for producing gas for inflating an air bag and having a first opening from which gas produced from said inflator may be expelled; an air bag housing attached to said inflator housing, and having a second opening disposed so as to be communicated with said first opening of said inflator housing when said air bag housing is attached to said inflator housing, and a third opening placed opposite to said second opening; an air bag received in said air bag housing in a folded state, and adapted to be projected and deployed from said third opening of said air bag housing when said air bag is inflated by said gas, said air bag being provided with an open base end from which gas produced from said inflator may be introduced into said air bag to inflate the same; and said third opening being placed in an opening provided in a part of a vehicle body part, and closed by a lid member which can rupture when said air bag is deployed, said lid member being engaged by said vehicle body part by first engagement means which guides said lid member into alignment with said opening of said vehicle body part, and by said air bag housing by second engagement means which secures said lid member in said opening of said vehicle body part and resiliently allows a slight lateral movement of said lid member with respect to said vehicle body part.
Claim 3
Dependent Claim
38 words
A passive restraint system according to claim 1, wherein said base end of said air bag is clamped between said inflator housing and said air bag housing when said air bag housing is attached to said inflator housing.
Claim 4
Dependent Claim
49 words
A passive restraint system according to claim 2, wherein a partition wall is interposed between said inflator housing and said air bag housing and provided with at least one opening serving as a gas outlet for allowing gas produced from said inflator to be introduced into said air bag.
Claim 5
Dependent Claim
47 words
A passive restraint system according to claim 3, wherein said partition wall is integrally provided in said inflator housing, and said base end of said air bag is interposed between sealing surfaces defined on said partition wall and an annular flange provided in said air bag housing.
Claim 6
Dependent Claim
33 words
A passive restraint system according to claim 4, wherein said partition wall is integrally molded with said inflator housing such that a single piece forms both said inflator housing and said partition wall.
Claim 7
Dependent Claim
61 words
A passive restraint system according to claim 3, wherein said inflator housing and said air bag housing consist of an integrally formed common housing which is separated by said partition wall consisting of a separate member, said base end of said air bag being interposed between sealing surfaces defined on said partition wall and an inner surface of said common housing.
Claim 8
Dependent Claim
20 words
A passive restraint system according to claim 6, wherein said integrally formed common housing is an integrally molded single piece.
Claim 9
Dependent Claim
45 words
A passive restraining system according to claim 1, wherein said lid member is provided with a peripheral part overlapping an inner peripheral edge of said vehicle body part, said second engagement means allowing slight movement of said lid member away from said vehicle body part.
Claim 10
Dependent Claim
83 words
A passive restraint system according to claim 8, wherein said first engagement means comprises a plurality of tongues depending from a reverse surface of said lid member, said tongues being each provided with a claw engaging an inner peripheral edge of said vehicle body part opening, and said second engagement means comprises a hook member secured to said air bag housing, and a slot provided at least in one of said tongues depending from said lid member, and engaged by said hook member.
Claim 11
Dependent Claim
44 words
A passive restraint system according to claim 8, wherein said second engagement means comprises a hook member secured to said air bag housing, and a tongue depending from a reverse surface of said lid member and having a slot engaged by said hook member.
Claim 12
Dependent Claim
43 words
A passive restraint system according to claim 10, wherein said hook member is provided with a stopper adapted to engage a free end of said tongue so as to limit an excessive inward displacement of said lid member into said vehicle body opening.
Claim 13
Dependent Claim
60 words
A passive restraint system according to claim 1, wherein said lid member is provided with a peripheral part overlapping an inner peripheral edge of said vehicle body part, and is engaged by said air bag housing by a belt passed around said inflator housing and said air bag housing and engaged to said lid member at two terminal ends thereof.
Claim 14
Dependent Claim
45 words
A passive restraint system according to claim 1, wherein said air bag housing diverges from said second opening toward said third opening, and is provided with at least one folding line about which said air bag housing can readily flex relative to said inflator housing.
Claim 15
Dependent Claim
33 words
A passive restraint system according to claim 13, wherein part of said air bag housing surrounding said third opening is relatively reinforced so as to have a relatively high rigidity against lateral deformation.
Claim 16
Dependent Claim
19 words
A passive restraint system according to claim 14, wherein said reinforced part is provided by an annular reinforcement portion.
Claim 17
Dependent Claim
17 words
A passive restraint system according to claim 1, wherein said vehicle body part comprises an instrument panel.
Claim 18
Dependent Claim
24 words
A passive restraint system according to claim 1, wherein said inflator housing is securely attached to a fixed part of said vehicle body part.
Claim 19
Dependent Claim
45 words
A passive restraint according to claim 1, wherein said first engagement means comprises a plurality of tongues depending from a reverse surface of said lid member, said tongues being each provided with a claw engaging an inner peripheral edge of said vehicle body part opening.