Vented hatch cover
US5960980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Jun 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/202
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.