Straight thread adjustable port end

An externally threaded male hydraulic coupling member adapted for threaded and sealed attachment to a port body with a female port, said female port having an inwardly tapered orifice blended into an internally threaded bore portion, said male hydraulic coupling member being comprised of:

• a tubular member with at least two ends, including a first end, an externally threaded second end adapted for engagement with said port body internally threaded bore portion, said male coupling member having a longitudinal axis angled relative to said first end, a bore extending through said tubular member from said first end to said second end, a first cylindrical peripheral undercut portion longitudinally adjacent said externally threaded second end with a uniform diameter slightly less than the minor diameter of said second end threads, a series of intermediate external threads longitudinally adjacent said first undercut portion having a first longitudinal end and a second longitudinal end, a second cylindrical undercut portion of a uniform diameter longitudinally extending from said intermediate external threads second longitudinal end to a shoulder portion;
• a seal member located within and in peripheral sealing contact with said first undercut portion;
• an annular ring member positioned in close peripheral internal contact with said first undercut portion, located between said seal member and said intermediate external threads first end, wherein upon attachment of said male coupling member to said female port an annular chamber is formed in which said seal member is encapsulated by said annular ring, said tapered orifice and said first cylindrical peripheral undercut portion;
• and
• a lock nut, located on the side of the annular ring remote from said seal member, having a first longitudinal end and a second longitudinal end, threadedly attached to said intermediate external threads, said lock nut second longitudinal end, when in a fully retracted position relative to said intermediate external threads, is in abutting contact with said shoulder portion and said lock nut first longitudinal end extends axially beyond said series of intermediate external threads.

A method of forming a hydraulic connection wherein a male hydraulic coupling member is threadedly attached to a port body having a female port, comprising:

• providing said male hydraulic coupling member with a tubular member with at least two ends, including a first end, an externally threaded second end angled relative to said first end, a bore extending through said tubular member from said first end to said second end, a first cylindrical peripheral undercut portion longitudinally adjacent said threaded second end with a uniform diameter at least slightly less than the minor diameter of said second end threads, a series of intermediate external threads longitudinally adjacent said first undercut portion having a first longitudinal end and a second longitudinal end, a second cylindrical undercut portion of a uniform diameter longitudinally extending from said intermediate external threads second longitudinal end to a shoulder portion;
• said male hydraulic coupling member further including a seal member positioned in peripheral sealing contact with said first undercut portion, an annular ring member located in peripheral contact with the outside surface of said first undercut portion, located between said seal member and said intermediate external threads first longitudinal end, and a lock nut, having a first longitudinal end located between said annular ring member and said intermediate external threads and a second longitudinal end, threadedly attached to said intermediate external threads, with the longitudinal extent of said lock nut being at least equal to the combined total axial length of said second cylindrical undercut portion and said intermediate external threads;
• providing said female port with an inwardly tapered orifice blending into a threaded bore portion;
• attaching said male coupling member threaded second end into said female port threaded bore portion and forming an annular chamber for encapsulating said seal member;
• positioning said first end of said male coupling member to a desired angular orientation;
• and
• tightening said locknut in order to seal said annular chamber, said chamber having a longitudinal length greater than the thickness of said seal member, said annular ring member having abutting contacts with said seal member and said lock nut first longitudinal end.

A male hydraulic coupling member comprised of:

• a tubular member with at least two ends, wherein one of said at least two ends is provided with external threads and is angled relative to the other of said at least two ends, a bore extending from said one end to said other end, a first cylindrical peripheral undercut portion having one end longitudinally adjacent said threads and having a substantially uniform diameter slightly less than the minor diameter of said external threads, an intermediate externally threaded portion, longitudinally adjacent another end of said first undercut portion, having a first longitudinal end and a second longitudinal end, a second cylindrical undercut portion of a substantially uniform diameter longitudinally extending from said intermediate external threaded portion second longitudinal end to a shoulder portion;
• a seal member positioned within and in peripheral sealing contact with said first undercut portion;
• an annular ring member, in close inner peripheral surface contact with said first undercut portion, located between said seal member and said intermediate external threaded portion first longitudinal end;
• and
• a lock nut, located on the side of the annular ring member remote from said seal member, having a first longitudinal end and a second longitudinal end, threadedly engaged with said intermediate external threaded portion, said lock nut first longitudinal end, regardless of the axial position of said lock nut relative to said intermediate external threaded portion, always being located between said annular ring and said intermediate external threaded portion first longitudinal end.