Hatch cover

Details Hatch cover Hatch cover

1983-09-23

1985-06-18

Kannan, Philip C.

Movable or removable closures

Removable closure

Releasable means on closure

49395, 49400, 404 25, E05C 2102

Patent

active

045234078

ABSTRACT:
The hatch cover is secured and locked in place by a spider which is rotatable into locking position against the underside of a deck ring which receives the cover plate. The spider is clamped by a center bolt passing through the cover and the spider. Means are provided on opposite ends of the center bolt for rotating it from either the outside or inside of the cover. The cover is adapted to stow a removable wrench for this purpose recessed in the outside of the cover. A peripheral seal on the cover plate maintains a water tight and air tight joint when the cover is clamped and locked in place while allowing metal to metal contact between the cover and supporting ring when necessary.

REFERENCES:
patent: 1287290 (1918-12-01), Golden
patent: 2778072 (1957-01-01), Palisca
patent: 3209663 (1965-10-01), Baier
patent: 3920347 (1975-11-01), Sauriol et al.
patent: 3977124 (1976-08-01), Oger

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