Angle adaptor fitting

Claim 1

In a swivel fitting for rotatably mounting two ends of hose or pipe including: a female member having a generally cylindrical sidewall and a generally circular rear wall closing the sidewall; a male member inserted into said female member and having a generally cylindrical sidewall of an outside diameter smaller than the inside diameter of the female member, said male member having a generally circular front wall spaced apart from said rear wall of said female member, said members having an aligned fluid opening extending perpendicular to the front and rear walls; locking means between the male and female members to maintain a given orientation of said male member in said female member; a circumferential groove extending between said cylindrical sidewalls when said male and female members are maintained in said given orientation by said locking means; first resilient seal means comprising an O-ring of resilient material having a generally circular cross-section and located within and extending around said circumferential groove, said circumferential groove having a depth and width and wherein said O-ring protrudes out of said groove; an annular groove between said rear wall and said front wall, said annular groove having a width and a depth, said annular groove being formed on said rear wall; and second resilient seal means within said annular groove, the improvement comprising the provision of: said inside diameter of said female member, said outside diameter of said male member, and said depth of said groove being of such dimension that said seal means is compressed when said male and female members are maintained in said given orientation by said locking means so that said first seal means seals the cylindrical walls, allows for rotation of said members relative to each other, and maintains alignment of said members; said circumferential groove having a depth and width, wherein the radius of said O-ring is greater than the depth of said groove so that said O-ring protrudes from said groove; said second seal means being of a thickness relative to the depth of said annular groove and the spacing of the front wall and rear wall established by said given orientation such that the second seal means is compressed between the front wall and the rear wall when said members are maintained in said given orientation by said locking means so that said second seal means forms a seal between the end wall and the front wall, said second seal means including an O-ring of resilient material having a circular cross-section; the radius of said O-ring of said second seal means being greater than the depth of said annular groove so that said O-ring of said second seal protrudes from said annular groove; the distance of protrusion of said O-ring of said second seal means from said annular groove is greater than the protrusion of said O-ring of said first seal means from said circumferential groove.