Quick activating pressure vessel closure

Closure fasteners – Bolts – Multiple

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Details

292201, 2922565, 292DIG72, E05C 700

Patent

active

052900762

ABSTRACT:
A closure device for a lower opening of a coke drum pressure vessel is quick acting. The opening has an annular flange. An annular movable support encircles the pressure vessel above the flange. A stationary support secures to the flange below the movable support. A number of coil springs are evenly spaced around the stationary support between the stationary support and the movable support. Hydraulic cylinders between the movable and stationary support move the movable support axially relative to the stationary support. A head will abut the flange. Hooks mounted to the movable support will engage the head and pull the head tightly upward into engagement with the flange when the retracting cylinders are released. Pivotal cylinders will pivot the hooks between engaged and disengaged positions.

REFERENCES:
patent: 2797017 (1957-06-01), Tangard
patent: 2834504 (1958-05-01), Annicq
patent: 3797882 (1974-03-01), Brimhall
patent: 3856338 (1974-12-01), Johnsson
patent: 4093176 (1978-06-01), Contastin
patent: 4157146 (1979-06-01), Svenson
patent: 4664431 (1987-05-01), Kobayashi et al.
patent: 5228825 (1993-07-01), Fruchtbaum et al.
Derwent's abstract, No. 90-088878/12, week 9012, Abstract of SU, B2, 1504-446-A (Novos Br Chem Eqpt), Aug. 30, 1989.

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