Hatch assembly

Details Hatch assembly Hatch assembly

1984-07-23

1987-07-07

Schmidt, Frederick R.

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

376204, 376261, 292139, 292167, 220323, G21C 1300

Patent

active

046786201

ABSTRACT:
A hatch assembly has an annular seat, a hatch cover and a plurality of latching units. Each latching unit has a slidably supported locking bolt movable generally radially inwardly with respect to the annular seat into a hatch cover locking position and generally radially outwardly into a hatch cover releasing position. In the hatch cover locking position at least one length portion of the locking bolt extends over the hatch cover for maintaining the hatch cover on the annular seat. Each latching unit further has a rotary crankshaft, an operating handle torque-transmittingly connected to the crankshaft for applying a locking torque and an opposite, releasing torque thereto; and a coupling mechanism for connecting the crankshaft with the locking bolt and for converting rotary motion of the crankshaft to linear motion of the locking bolt. The coupling mechanism has a spring for transmitting the locking torque from the crankshaft as a radially inwardly oriented resilient force to the locking bolt. The radially inwardly oriented resilient force is resolved to a component force with which the locking bolt presses the hatch cover against the annular seat.

REFERENCES:
patent: 4053067 (1977-10-01), Katz
patent: 4099751 (1978-07-01), Poe
patent: 4450134 (1984-05-01), Soot
patent: 4519519 (1985-05-01), Meuschke

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