Flange connection with improved seal and bolt-nut design

Details Flange connection with improved seal and bolt-nut design Flange connection with improved seal and bolt-nut design

1987-06-30

1988-11-29

Callaghan, Thomas F.

Pipe joints or couplings

With fluid pressure seal

With expansible chamber means

285363, 285365, F16L 2300

Patent

active

047876549

ABSTRACT:
A new and improved flange connection design is disclosed which lowers weight, cost and size. Briefly stated, truncated threads are used in the flange area which more uniformly distribute stress concentrations and allows a smaller bolt and nut to be utilized. Further, a self-energizing seal which uses the pressure inside the conduit to greatly facilitate the flange connection sealing function. This therefore allows lower forces to be utilized when clamping the two flanges together which results in less expensive, smaller and less costly flange connection construction as well as still further reductions in the size of the nuts and bolts utilized.

REFERENCES:
patent: 1909489 (1933-05-01), Eaton
patent: 2150876 (1939-03-01), Caminez
patent: 2349651 (1944-05-01), Davis
patent: 3156475 (1964-11-01), Gerard et al.
patent: 3210096 (1965-10-01), Van Der Wissel
patent: 3575432 (1971-04-01), Taylor
patent: 4549754 (1985-10-01), Saunders et al.
patent: 4688832 (1987-08-01), Ortloff et al.
"High Pressure Technology: Industrial Applications", Mechanical Engineering, Dec. 1965.

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