Quick-coupling fitting for pipes with an improved seal

Details Quick-coupling fitting for pipes with an improved seal Quick-coupling fitting for pipes with an improved seal

1996-05-21

1999-01-05

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

2511498, 251356, 251359, F16K 3728

Patent

active

058552278

ABSTRACT:
A quick-coupling fitting for pipes comprises a female element and a male element that can be coupled together. The female element comprises parts that are fixed and parts that can slide between a closed position and an open position of a passage for fluids. The fixed parts comprise a stem having one end enlarged, and the slidable parts comprise a bush, coaxial with the stem, axially slidable and elastically urged towards the closed position. The bush defines with the stem a hollow space for the passage of the fluid. The bush is provided with a sharp-edged metal annular projection that, in the closed position, engages with a metal frustum-shaped surface of the enlarged end of the stem to provide a seal of said hollow space.

REFERENCES:
patent: 2263581 (1941-11-01), Hughes
patent: 4086939 (1978-05-01), Wilcox et al.
patent: 4289164 (1981-09-01), Ekman
patent: 4892117 (1990-01-01), Spalink et al.
patent: 5076325 (1991-12-01), Ekman
patent: 5323812 (1994-06-01), Wayne

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