Hybrid inflator
First Claim
1. An inflator (10) comprising:
- a pressure tank (12, 14, 16,
20) for storing a quantity of stored inflation gas under pressure, the pressure tank comprising a first burst disk (46) in communication with the store inflation gas and preventing egress of the gas from the chamber;
a sliding piston (72) having an opening and including at one end thereof first means (74) for puncturing the first burst disk (46) and at its other end a second burst disk (80); and
a propellant material (90) provided near the second burst disk (80), said propellant producing gaseous combustion products when burned;
the sliding piston (72) movable into engagement with the first burst disk to puncture said first burst disk in response to the build up of pressure acting on the second burst (80) in response to burning of the propellant material (90) thereby permitting egress of the stored inflation gas, the second burst disk being ruptured by the continued build up of pressure due to the burning propellant material whereupon after the rupturing of the second burst disk the heated products of combustion resulting from the burning propellant material flow through the opening of the sliding piston (72) to increase the temperature of the stored inflation gas prior to its exit from the inflator.
4 Assignments
0 Petitions
Accused Products
Abstract
An inflator (10) comprising: a pressure tank (12, 14, 16, 20) for storing a quantity of stored inflation gas under pressure. The pressure tank comprising a first burst disk (46) in communication with the stored inflation gas; a sliding piston (72) including at one end thereof a sharp edge (74) for puncturing the first rupture disk and at its other end a second rupture disk (80). The sliding piston (72) movable into engagement with the first rupture disk in response to the build up of pressure acting on the second rupture disk (80) in response to the burning of propellant material (90) thereby permitting egress of the stored inflation gas. The second burst disk being ruptured by the continued build up of pressure due to the burning propellant whereupon after the rupturing of same the heated products of combustion resulting from the burning propellant flow through the sliding piston (72) to increase the temperature of the stored inflation gas prior to its exit from the inflator.
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Citations
16 Claims
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1. An inflator (10) comprising:
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a pressure tank (12, 14, 16,
20) for storing a quantity of stored inflation gas under pressure, the pressure tank comprising a first burst disk (46) in communication with the store inflation gas and preventing egress of the gas from the chamber;a sliding piston (72) having an opening and including at one end thereof first means (74) for puncturing the first burst disk (46) and at its other end a second burst disk (80); and a propellant material (90) provided near the second burst disk (80), said propellant producing gaseous combustion products when burned; the sliding piston (72) movable into engagement with the first burst disk to puncture said first burst disk in response to the build up of pressure acting on the second burst (80) in response to burning of the propellant material (90) thereby permitting egress of the stored inflation gas, the second burst disk being ruptured by the continued build up of pressure due to the burning propellant material whereupon after the rupturing of the second burst disk the heated products of combustion resulting from the burning propellant material flow through the opening of the sliding piston (72) to increase the temperature of the stored inflation gas prior to its exit from the inflator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification