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US 6,805,376 B2Granted
Inflator with shock wave generator
AssigneeTakata Corporation
InventorHideki Mizuno
Life of this patent
Estimating the term…
Abstract
A pressure container stores gas therein, and includes a tube facing a gas exit at one end thereof. An initiator is fitted into a rear end of the tube. A burst disk closes the gas exit and is arranged to break upon receipt of a shock wave. A closure disk closes a distal end of the tube. The tube is filled with a gas with a pressure lower than that in the container. The initiator ejects a high-pressure gas into the tube to generate a shock wave. The shock wave breaks the closure disk and propagates in the container, and then bursts the burst disk when it reaches the gas exit.
Claims6
An inflator for inflating an airbag, comprising:
- a pressure container filled with a high-pressure gas higher than an atmosphere and having a gas exit at one end thereof, said gas exit being opened upon receipt of a first shock wave, and
- a shock wave generator provided at the other end of the pressure container for generating the first shock wave toward the gas exit, and including a tube having a distal end and a proximal end and being filled with a gas with a pressure lower than that of the high-pressure gas in the pressure container, and an initiator provided at the proximal end of the tube for emitting a second shock wave toward the distal end of the tube when the initiator is actuated, said distal end having a closure disk arranged to open upon receipt of the second shock wave to generate the first shock wave toward the gas exit of the pressure container.
Dependencies are inferred from the claim text.