Abstract: A quick-action coupling for pipes, including two joint components joined at respective ends of pipes, an engaging element constraining the two joint components together. The engaging element includes a flange longitudinally solidly constrained to one of the components; a lever hinged to the flange; a hook engaging the other component and hinged to the lever. The lever, by rotating about the first rotation axis determines an open position and a closed position. The coupling also includes a sliding tract, solidly constrained to the first component; an abutting body, mobile solidly with the lever, suitable for sliding on the sliding tract in the tract between the closed position and the open position of the lever and vice versa. The lever includes an elastically deformable element which deforms with the varying of the distance between the body and the first rotation axis in the sliding of the body on the tract.

Abstract: Male and female components joined to respective pipes are coupled by an annular element (21) which embraces the male component and engages it in a transverse plane, and at least two coupling elements (30, 30′) for hooking the female component, each having two parallel hooking arms (31) in the form of plates which lie in planes parallel to the axial plane (P) passing through the longitudinal center line of the coupling elements (30, 30′). Flanges (41) for the coupling elements are joined to the annular element (21) in planes parallel to the planes defined by the hooking arms (31), and these carry a transverse pin (42) for securing the hooking arms (31) in an axial direction. Axial traction applied to the coupling elements (30, 30′) firmly join the male and female components together. The ball-and-socket joint obtained is able to better support high pressure.

Abstract: The joint comprises two components to be coupled together, namely a male component and a female component joined to respective pipes. These two components are coupled together by a third component which comprises: an annular element (21) which embraces the male component and engages it in a transverse plane, and at least two coupling means (30, 30′) for hooking the female component, each comprising two parallel hooking arms (31) in the form of plates which lie in planes parallel to the axial plane (P) passing through the longitudinal centre line of the coupling means (30, 30′). In addition there is provided a pair of flanges (41) for each coupling means (30, 30′) in the form of plates firmly joined to the annular element (21) and lying in planes parallel to the planes defined by the hooking arms (31), said pair carrying a transverse pin (42) for securing the hooking arms (31) in an axial direction.