Vibration transmission system for ignition devices
AssigneeDynamit Nobel Aktiengesellschaft
InventorsRolf Menne, Willi Petters
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Abstract
In a system for the transmission of ground vibrations to an ignition device, a frequency filter and a timing circuit are disposed between the sensor and the ignition device. The timing circuit permits the feeding of the output signal of the frequency filter to the ignition device only after the mechanical vibrations producing the output signal of the frequency filter have acted on the sensor for a predetermined, variable period of time.
Claims6
In a system for the transmission of ground vibrations to an ignition device of the type having a sensor for picking up mechanical vibrations and producing output signals corresponding in frequency and amplitude to that of the vibrations, the improvement comprising means disposed between the sensor and the ignition device comprising a frequency filter and a timing circuit for permitting the feeding of the output signal of the frequency filter to the ignition device only after the mechanical vibrations producing the output signal of the frequency filter have acted on the sensor for a predetermined, variable period of time.
Dependencies are inferred from the claim text.