Abstract: An electric safety squib having a grounded outer case and a pair of normally ungrounded terminals includes a closed thermally and electrically conductive container filled with pyrotechnic material. An electrical resistance wire is embedded in the pyrotechnic material for controlled ignition thereof. A separate conductor extends from each of the terminals to an associated end of the resistance wire through a resistive header and a chamber holding ferrite beads whereby energy of radio-frequency and electrostatic origin extraneously induced in the terminals and conductors is dissipated into the bulk of the conductors, the resistive header and ferrite beads.

Abstract: The discharge end portion of a sewage delivery tube is surrounded by the input end portion of a conveyor pipe. A long, flat strip of consumable filter material is inserted through the annular space between them and into the conveyor pipe. Prior to this insertion, however, the filter strip is shaped and fastened into the form of a closed tube. The conveyor pipe discharges into an incinerator equipped with means for breaking the sewage sludge into burnable droplets. The conveyor pipe is supported over a liquid-collecting funnel and is perforated in the portion thereof that is over the funnel. A vibrator attached to the conveyor pipe oscillates it longitudinally; and ratchet teeth inside the conveyor pipe are oriented to cooperate with the vibrator to urge the filter-encased sludge toward the incinerator.