Patent ID: 6113304
Filing Date: 2000-09-05
Classification: F04B,Y10T

Abstract:
A high pressure fluid seal assembly for use in an ultrahigh pressure pump comprising:a seal carrier having a bore therethrough and having a first annular groove concentric with the bore and a second annular groove concentric with the bore and axially spaced from the first annular groove;an annular seal positioned in the first annular groove, an end region of the seal being supported by the seal carrier;an annular guidance bearing positioned in the second annular groove, an inner diameter of the annular guidance bearing being smaller than an inner diameter of the bore of the seal carrier in a region between the first annular groove and the second annular groove;a first member extending through the bore, having first and second opposite ends, elongated along a first longitudinal axis extending between and beyond the first and second ends and having a first engagement portion toward the first end, the first engagement portion having a first engagement surface rounded convexly away from the second end with a portion of the first engagement surface furthest from the second end aligned with the first longitudinal axis, the first member being piloted toward the first and second ends thereof for motion along the first longitudinal axis;a second member having first and second opposite ends, elongated along a second longitudinal axis extending between and beyond the first and second ends of the second member, the second longitudinal axis being substantially coaxial with the first longitudinal axis, the second member being piloted toward the first and second ends thereof for motion along the second longitudinal axis, the second member having a second engagement portion toward the second end with a substantially flat second engagement surface in contact with the portion of the first engagement surface furthest from the second end of the first member and substantially perpendicular to the first longitudinal axis to align motion of the first member along the first longitudinal axis with motion of the second member along the second longitudinal axis.