Pipe joints or couplings – With assembly means or feature
Patent
1988-01-15
1990-05-08
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
285 85, 285349, 285364, 285379, 285912, 285920, F16L 2300
Patent
active
049232193
ABSTRACT:
A coupling device for ducts comprises locking elements constrained to the flange of a first duct which are connected to movement means to move them toward or away from the flange of a second duct. The movement means are actuated by a thrust ring which is rotated around the axis of the first duct. Along the contact side of the flange of the first duct are provided elastically stressed seals which interact between the flange of the first duct and the flange of said connected duct. Said seals consist of floating rings running and oscillating in recesses made in the flange, said floating rings being acted upon by elastic elements inserted in said recesses.
REFERENCES:
patent: 382597 (1888-05-01), Emerson
patent: 1910706 (1933-05-01), Malzard
patent: 2700559 (1955-01-01), Jensen
patent: 3442535 (1969-05-01), Frohlich
patent: 3477748 (1969-11-01), Tinsley
patent: 3586350 (1971-06-01), Ashton
patent: 4142740 (1979-03-01), Wilms
patent: 4605247 (1986-08-01), Alexander et al.
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