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US 6,332,399 B1Granted
Igniting element
AssigneesDaimlerChrysler AG, TRW Airbag Systems GmbH
InventorsHorst Laucht, Gerhard Mueller, Wolfgang Welser
Life of this patent
Estimating the term…
Abstract
An igniting element, such as is used in a vehicle air bag igniter reduces the power dissipated by the air bag ignition circuit, as well as its space requirement and its costs, by using the ignition switch/switches as the ignition element (7) itself of the ignition circuit. The ignition circuit is integrated in a silicon chip, and has at least one ignition switch constructed as a transistor.
Claims10
An ignition element for an ignition circuit, comprising:
- at least one ignition switch in the form of a transistor;
- wherein
- the at least one ignition switch also constitutes a heat generating component of said ignition element, which is heated by a flow of ignition current therethrough;
- and
- further comprising a sensor element for monitoring the ignition circuit by means of a dynamic temperature measurement when a test signal is applied.
2 more elements
An ignition element for an ignition circuit, comprising:
- at least one ignition switch in the form of a transistor;
- wherein
- the at least one ignition switch also constitutes a heat generating component of said ignition element, which is heated by a flow of ignition current therethrough;
- and
- a base of the at least one ignition switch is constructed on a Si-chip as a thin Si-membrane which is suspended in a Si-frame, is thermally insulated in the Si-chip with respect to its environment and is arranged on a surface of the Si-chip;
- and
- when current passes through, the ignition switch supplies ignition energy to an adjacent ignition charge.
4 more elements
Dependencies are inferred from the claim text.