Hatch cover and locking structure

Details Hatch cover and locking structure Hatch cover and locking structure

1984-10-10

1986-02-18

Lowrance, George E.

Receptacles

Closures

Crossbar carries closure and serves as closure fastener

105308E, 105377, 114230, 220324, B65D 4524, B65D 4528, B61D 1712, B61D 3900

Patent

active

045708169

ABSTRACT:
The hatch of a lading container, such as the hopper of a covered hopper car, is sealed by a hatch cover having a locking arrangement which prevents the hatch cover from being blown open by pressure within the hopper when the locking arrangement is unlocked. An over-center locking arm has two spaced catches which co-act with two latches on a latching arrangement to selectively provide a sealed, a pressure blow-off, and a hatch open position. A rotative adjustment is provided to enable adjustment of the sealing pressure of the hatch cover on the hatch.

REFERENCES:
patent: 1739911 (1929-12-01), McMurray
patent: 1929761 (1933-10-01), Thwaits
patent: 2324356 (1943-07-01), Brown
patent: 4046082 (1977-09-01), Tedesco
patent: 4331257 (1982-05-01), Taschner
patent: 4388873 (1983-06-01), Carleton
patent: 4441431 (1984-04-01), Carney

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