Abstract: A hose of improved impulse life is described including an inner polymeric tube which has a relatively hard outer surface, a tightly packed wire reinforcement e.g., braid or spiral, telescoped over the tube, and an expanded polymeric cushion matrix encapsulating at least a portion of the strands of the reinforcement and also promoting wire-to-wire and tube-to-wire adhesion. A method for producing the hose employing a foamable material applicator is also disclosed.

Abstract: A hose of improved impulse life is described including an inner polymeric tube which has a relatively hard outer surface, a tightly packed wire reinforcement e.g., braid or spiral, telescoped over the tube, and an expanded polymeric cushion matrix encapsulating at least a portion of the strands of the reinforcement and also promoting wire-to-wire and tube-to-wire adhesion. A method for producing the hose employing a foamable material applicator is also disclosed.

Abstract: An extruder head that includes a doubled taper conical pin with a divergent conical surface interconnected at a common base to a convergent conical surface; and a coaxial die with an interior cavity spaced from and having substantially the same contour as the pin, the die and pin together forming an annular gap with an annular inlet area, the gap conically divergent to a second annular area juxtaposed the common conical base of the pin to form a second annular area of at least twice the size of the inlet area, the gap conically convergent from the second annular area to an annular exit area.