Abstract: Apparatus for condensing return fuel in a fuel tank. The condenser comprises an elongated body having a passage therethrough in fluid communication with a fuel return line. A plurality of vent holes are spaced along the length of the body and communicated with the passage. The vent holes are sloped along the length of the passage so that gaseous fuel will tend to first exit vent holes toward a distal end of the passage. Both single and multiple passage condensers are disclosed.

Abstract: A hydrocarbon analyzer wherein the filter is backflushed by the liquid sample. The motive force for the backflush is provided by energy stored from the pumping of the liquid sample in a compressible fluid in contact with the sample downstream of the filter. After the sample has been analyzed the pressure on the upstream side of the filter is lowered and the energy in the compressible fluid is released pushing the liquid sample back across the filter providing a backflush.

Abstract: A process for assembling a cone speaker by the consecutive steps of (a) attaching a forward ring-shaped magnet plate to the small end of a truncated conical basket frame; (b) attaching a ring-shaped magnet concentrically to the forward magnet plate; (c) positioning voice coil by a shim within the central opening of the forward magnet plate; (d) affixing a flexible spider to the voice coil and to the basket; (e) affixing a solid speaker cone and its flexible skiver to the voice coil and to the basket; and affixing a cylindrical pole piece and rear plate assembly to the rear portion of the magnet with the pole piece extending into the inside of the voice coil and spaced apart therefrom by about 0.015 inch radially.