US 9,073,512 B1Granted

Gas generating system with gas generant cushion

AssigneeTK Holdings Inc.

InventorsBrian A. Mayville, Christian P. Thompson

Life of this patent

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Abstract

A gas generator contains a housing having a first end and a second end; a perforated first combustion chamber contained within the housing; a first gas generant contained within the first combustion chamber; a first gas generant cushion positioned between one of either the first end or the second end, and the first gas generant; and a booster chamber contained within the housing, the booster chamber extending through the first gas generant cushion to physically communicate with the second end of the housing. The gas generant cushion may have at least one concave cavity formed on one side of the cushion for providing an enhanced propellant cushion. A vehicle occupant protection system incorporating this gas generator is also contemplated in accordance with the present invention.

Claims19

Dependent claims

A gas generator comprising:

a housing containing a first end and a second end;
a perforated first combustion chamber contained within said housing;
a second combustion chamber contained within said housing, said second combustion chamber containing at least one gas exit aperture proximate to said second end of said housing;
a first gas generant contained within said first combustion chamber;
a second gas generant contained within said second combustion chamber;
a first gas generant cushion positioned between one of either the first end or the second end, and the first gas generant, the first gas generant cushion including a first inner wall, a second inner wall, and at least a first concave cavity defined within at least one of the first inner wall and the second inner wall;
and
a booster chamber contained within said housing and extending from said first end to said second end, said booster chamber extending through said first gas generant cushion and in physical communication with said second end of said housing.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/949,205Filed 23 Jul 2013 · us provisional application
Priority: 23 Jul 2012
Granted: 7 Jul 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B60R 21/264
Characterised by the inflation fluid source or means to control inflation fluid flow: using instantaneous generation of gas, e.g. pyrotechnic
C06D 5/00
Generation of pressure gas
C06D 5/06
Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets: by reaction of two or more solids
B60R 2021/2642
Using instantaneous generation of gas, e.g. pyrotechnic: comprising a plurality of combustion chambers or sub-chambers

Family

Application61/674,837Us provisional application · filed 23 Jul 2012
US 9,073,512 B1This patent

From the US filing history. Foreign family members aren’t listed.

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