Vented hatch cover

Details Vented hatch cover Vented hatch cover

B - Operations, Transporting

61

D

B61D 17/16 (2006.01) B61D 7/14 (2006.01) B65D 90/54 (2006.01) E05C 3/12 (2006.01) E05D 7/00 (2006.01) E06B 5/00 (2006.01) E06B 7/02 (2006.01)

Patent

CA 2239161

A vented hatch cover assembly for a railroad hopper car including top and bottom members having substantially rigid and somewhat dome-shaped bodies which are divided into four quadrants wherein each quadrant includes coacting baffle members extending from the bodies of the top and bottom members which define a plurality of circuitous air passageways to allow air flow into and out of the hopper car while restricting moisture and other contaminants from entering the car. An improved hatch cover lock mechanism for securing a vented or non-vented cover to the hatch is easily adjustable to provide a tight seal between the cover and hatch, and provides a safe controlled opening of a non-vented cover. An improved seal or gasket is arranged between the cover and hatch.

Couvercle de trappe à évent pour un wagon-trémie comprenant des éléments supérieur et inférieur ayant des corps essentiellement rigides et en forme de dôme qui sont divisés en quatre quadrants. Chaque quadrant comporte des éléments de chicane en coaction se prolongeant depuis les corps des éléments supérieur et inférieur, qui définissent de nombreux passages d'air détournés pour permettre à l'air d'entrer dans le wagon-trémie et d'en sortir tout en empêchant l'humidité et d'autres contaminants d'y entrer. Un mécanisme de verrouillage amélioré du couvercle de la trappe, qui permet de fixer un couvercle à évent ou sans évent à la trappe, est facilement réglable de façon à fournir une fermeture étanche entre le couvercle et la trappe et permet une ouverture sûre et contrôlée d'un couvercle sans évent. Un joint d'étanchéité amélioré est placé entre le couvercle et la trappe.

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