B - Operations – Transporting – 60 – R
Patent
B - Operations, Transporting
60
R
280/223
B60R 21/02 (2006.01) B60R 21/26 (2006.01) F42B 3/04 (2006.01)
Patent
CA 1046550
APPLICATION OF: ROBERT G. GEHRIG FOR: FLUID SUPPLY FOR OCCUPANT RESTRAINT SYSTEM ABSTRACT A fluid supply is provided for inflating an expandable confinement of a vehicle occupant restraint system of the type activated in response to a vehicle collision signal. The fluid supply includes a housing defining a fluid discharge port for directing fluid flow from the housing and a gas generating means disposed within the housing. The gas generating means includes combustible means having a sustaining charge comprising a plurality of layers of granulated material, the layers being approximately equal by weight, and screen means disposed between each pair of adjacent layers of the sustaining charge. Each of the screen means has a mesh substantially finer than the granules of material in the layer adjacent the screen and oppositely dis- posed from the fluid discharge port. Means are provided to acti- vate the sustaining charge in response to a collision signal. Preferably, a filter is included between the fluid discharge port and the layer of granulated material closest thereto and the screens act as intermediate filters to trap any particles of the combustion product which are approximately as large as the origi- nal granules, thus preventing too many of these particles from clogging the filter, which would restrict the fluid flow area and cause an undesirable pressure buildup within the housing.
240045
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