Automatic, gravity-powered closure device

Details Automatic, gravity-powered closure device Automatic, gravity-powered closure device

1986-10-28

1989-01-24

Kannan, Philip C.

Movable or removable closures

Condition responsive control

49231, E05F 1520

Patent

active

047993316

ABSTRACT:
A device is described for the automatic closing of openings on a floating structure whereby the need for human or manual intervention is eliminated. Once the floating structure is subjected to tilting (heeling), lateral, or other accelerating forces, an unstable mass is used as a triggering device to remove a block from interfering with the path of the closure. The closure rolls down a ramp and covers an adjacent opening to seal it, thus preventing uncontrolled flooding or fire from spreading within the structure.

REFERENCES:
patent: 509116 (1893-11-01), Callahan
patent: 542935 (1895-07-01), Montgomery-Moore
patent: 941428 (1909-11-01), Merrill
patent: 1392002 (1921-09-01), Engle
patent: 1738792 (1929-12-01), O'Rourke
patent: 3318048 (1967-05-01), Odend'Hal
patent: 3468282 (1969-09-01), Wintercorn
patent: 3563335 (1971-02-01), Holmes et al.
patent: 3832754 (1974-09-01), Maertin et al.
patent: 4357732 (1982-11-01), Hickman

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