Valves and valve actuation – With correlated flow path – Valve operated by joining flow path sections
Patent
1992-06-08
1994-07-05
Schwadron, Martin P.
Valves and valve actuation
With correlated flow path
Valve operated by joining flow path sections
2511499, 1376167, F16L 3728
Patent
active
053260724
ABSTRACT:
A plug-type safety coupling for pressures lines comprising a plug, a housing comprising a one-piece shaped part, a blocking element sealably mounted and secured within the housing, the blocking element being rotatable between a blocking position and a working position and having one of a cylindrical and a slightly conical shape. The blocking element is provided with a bore, which bore forms a bush for the plug, the bush comprising two sequential axial borings having different diameters. The material surrounding the smaller diameter axial boring forms an annular groove in communication with the larger diameter axial boring, the annular groove adapted to sealingly accommodate the plug, a seal between the plug and the bush being disposed between an outer surface of a nipple enclosed by the annular groove and an inner side surface of the plug. The blocking element is sealed against the housing by a loop seal disposed within a groove in the surface of the blocking element or a groove disposed in the inner surface of the housing.
REFERENCES:
patent: 2015396 (1935-09-01), Drissner
patent: 4662396 (1987-05-01), Avnon
Hans Oetiker AG Maschinen-und Apparatefabrik
Lee Kevin L.
Schwadron Martin P.
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