Land vehicles – Wheeled – Attachment
Patent
1998-07-07
2000-07-11
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
2807432, B60R 2124
Patent
active
060860928
ABSTRACT:
An inflatable vehicle occupant protection device (10) comprises an outer bag (40) comprising an outer panel (42) and an inner panel (44) sewn together along their outer peripheral portions by an external seam (70). The inner panel (44) of the outer bag (40) has a first mouth portion (66) fixable on the vehicle. The outer panel (44) of the outer bag (40) has an occupant contact portion (54) opposite the first mouth portion (66) which is movable in a first direction away from the first mouth portion upon inflation of the outer bag. An inner bag (30) located within the outer bag (40) comprises an outer panel (32) and an inner panel (34) sewn together along their outer peripheral portions by an external seam (100). The inner panel (34) of the inner bag (30) has a second mouth portion (86) fixable on the vehicle. The outer panel (32) of the inner bag (30) has an outer portion (74) opposite the second mouth portion (86) which is movable in the first direction away from the second mouth portion upon inflation of the inner bag. The second mouth portion (86) of the inner bag (30) has an inflation fluid inlet opening (88) extending around an axis (20, 52) of the second mouth portion for enabling inflation fluid to flow into the inner bag in the first direction. The outer bag (40) is inflated only by inflation fluid which first flows into the inner bag (30). The inner bag (30) has fluid vent means (90) for directing inflation fluid to flow out of the inner bag and into the outer bag (40) only in directions which are outward from the axis (20, 52) and in a direction away from the occupant contact portion (54) of the outer bag. In a preferred embodiment, an area (112) of the outer portion (74) of the inner bag (30) engages an area (110) of the occupant contact portion (54) of the outer bag (40) to block the flow of inflation fluid between the area (110) of the outer bag and the area (112) of the inner bag.
REFERENCES:
patent: 3752501 (1973-08-01), Daniel et al.
patent: 5078423 (1992-01-01), Fujita
patent: 5249824 (1993-10-01), Swann et al.
Rice Kenneth R.
TRW Vehicle Safety Systems Inc.
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