Hatch closure assembly

Details Hatch closure assembly Hatch closure assembly

1987-12-01

1989-05-30

Kannan, Philip C.

Movable or removable closures

Removable closure

49506, E06B 332

Patent

active

048338303

ABSTRACT:
A hatch closure assembly having high security includes a hatch locking spring and lever which is actuated by an adjustable screw. The actuating screw can be turned only by a special wrench.

REFERENCES:
patent: 11227 (1854-07-01), Ingalls
patent: 1323790 (1919-12-01), Schwab
patent: 2114499 (1938-04-01), Maclear
patent: 4143733 (1979-03-01), Morello et al.
patent: 4211128 (1980-07-01), Plumer
patent: 4242932 (1981-01-01), Barmore

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