Railcar hatch cover assembly

摘要

A railcar hatch cover assembly having at least first and second covers each moveable between an open position and a closed position. First and second gears are mounted to the first and second covers, respectively. Third and fourth gears are mounted to a shaft that rotates between first, second, third, and fourth positions in sequence. The third gear is engaged with the first gear as the shaft rotates from the first position to the third position, and the fourth gear is engaged with the second gear as the shaft rotates from the second position to the fourth position. As the shaft rotates from the second position to the third position, the first cover assists in rotating the shaft and opening the second cover. The hatch cover assembly may have any number of covers, which as they move to an open position assist in the opening of another cover.

主权项

1. A railcar hatch cover assembly comprising:
first and second covers each moveable between an open position and a closed position; a first gear mounted to the first cover; a second gear mounted to the second cover; a shaft extending from adjacent the first gear to adjacent the second gear, wherein the shaft rotates between first, second, third, and fourth positions in sequence; a third gear mounted to the shaft, wherein the third gear is engaged with the first gear as the shaft rotates from the first position to the third position; and a fourth gear mounted to the shaft, wherein the fourth gear is engaged with the second gear as the shaft rotates from the second position to the fourth position.