Cam-operated hatch cover lock

Details Cam-operated hatch cover lock Cam-operated hatch cover lock

1997-02-04

1998-07-28

Dorner, Kenneth J.

Closure fasteners

Bolts

Hooked end

292124, 292197, 2922565, 292257, 10537711, B61D 3900, E05C 330

Patent

active

057853622

ABSTRACT:
A hatch cover locking mechanism for securing a roof member onto a hatch opening of a railway hopper car is provided. The hatch cover lock utilizes camming engagement between an operation handle and a keeper member in order to lock or unlock the keeper member over a hinge pin associated with the hatch roof member. A hook rotates along an orientation generally the same as that of the keeper, and the hook retains the hinge pin as desired when the hinge pin is not locked down by the keeper.

REFERENCES:
patent: 691752 (1902-01-01), Dawley
patent: 768530 (1904-08-01), King
patent: 1171016 (1916-02-01), Barger
patent: 2405040 (1946-07-01), Madland
patent: 2846258 (1958-08-01), Granberg
patent: 3848912 (1974-11-01), Jensen et al.
patent: 3884514 (1975-05-01), Praska
patent: 4000703 (1977-01-01), Halliar
patent: 4062576 (1977-12-01), Jennings et al.
patent: 4094542 (1978-06-01), Siblik
patent: 4307670 (1981-12-01), Nadherny
patent: 4365832 (1982-12-01), Treppler
patent: 5314218 (1994-05-01), Nadherny

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