초록 ▼

The present invention provides a high pressure plug coupling for providing a quick, fluid tight connection to a fluid port having internal threads. The high pressure plug coupling includes a generally hollow, exterior sleeve, with a hollow cylindrical piston slideably disposed within the exterior sl

The present invention provides a high pressure plug coupling for providing a quick, fluid tight connection to a fluid port having internal threads. The high pressure plug coupling includes a generally hollow, exterior sleeve, with a hollow cylindrical piston slideably disposed within the exterior sleeve. A split collet assembly is connected to an end of the piston and is moveable therewith relative to the exterior sleeve. The split collet assembly includes a distal end portion that is radially expandable and contractable, with an interior surface of the distal end portion being tapered. An expansion pin is moveably disposed within the collet assembly and the piston for expanding the distal end portion. The expansion pin includes a frustum-shaped end portion adjacent to the distal end portion, with the frustum-shaped end portion being engaged with the tapered interior surface when the distal end portion is radially expanded. The frustum-shaped end portion of the expansion pin acts like a wedge, forcing the collets radially outward and into engagement with the internal threads of the fluid port. Further, since the frustum-shaped end portion is engaged with the tapered surface at the radially expanded state, the force of the pressurized fluid acting on the expansion pin is distributed between the expansion pin and the collets, thus achieving a more durable design and allowing higher pressures.

대표청구항 ▼

[ We claim:] [1.] A high pressure plug coupling, comprising:a generally hollow, exterior sleeve;a hollow cylindrical piston slideably disposed within said exterior sleeve;a split collet assembly connected to said piston and moveable therewith relative to the exterior sleeve, said split collet assemb

[ We claim:] [1.] A high pressure plug coupling, comprising:a generally hollow, exterior sleeve;a hollow cylindrical piston slideably disposed within said exterior sleeve;a split collet assembly connected to said piston and moveable therewith relative to the exterior sleeve, said split collet assembly including a distal end portion that is radially expandable and contractable, and an interior surface of said distal end portion being tapered;an expansion pin moveably disposed within the collet assembly and the piston for expanding the distal end portion, said expansion pin including an end portion adjacent to said distal end portion, said end portion being engaged with said tapered interior surface when said distal end portion is radially expanded; andactuating means for actuating said expansion pin.