Patent ID: 6758457
Filing Date: 2004-07-06
Classification: F16L,Y10T

Abstract:
A connecting member (4, 4â€²) connectable to a first conduit (2) for conducting a pressurized operating fluid, and fittable releasably to an endpiece (5) of a second conduit (3) for conducting said operating fluid, so as to define a fast-fit safety coupling (1); said connecting member (4, 4â€²) having a longitudinal axis (A) and comprising:a substantially tubular main member (10) connectable to said first conduit (2); a slide valve member (11) fitted inside said main member (10) so as to slide axially between a first work position wherein said valve member (11) separates said first conduit (2) in fluidtight manner from the outside, and a second work position permitting fluid flow between said first and said second conduit (2, 3); first retaining means (18) for releasably connecting said endpiece (5) to said valve member (11); second retaining means (17) for releasably connecting said valve member (11), in said second work position and connected to said endpiece (5), to said main member (10); and control means (70, 70â€², 71, 71â€², 72, 54) for disconnecting said connecting member (4, 4â€²) and said endpiece (5) by successively releasing said second retaining means (17)â€”thus moving said valve member (11) into said first work position and permitting outflow of the operating fluid between said main member (10) and the endpiece (5)â€”and said first retaining means (18); said control means (70, 70â€², 71, 71â€², 72, 54) comprising a first actuating member (70, 70â€²) fitted in angularly fixed manner to said valve member (11) and movable axially with respect to the valve member (11) in opposition to elastic return means (66) to release said first retaining means (18); characterized in that said control means (70, 70â€², 71, 71â€², 72, 54) comprise a second actuating member (71, 71â€²), which is axially fixed and rotatable with respect to said valve member (11) at least in said first work position of the valve member (11); and cam transmission means (72) interposed between said first and said second actuating member (70, 70â€², 71, 71â€²) and for converting rotation of said second actuating member (71, 71â€²) into axial displacement of said first actuating member (70, 70â€²) in opposition to said elastic means (66).