Railroad tank car manway assembly
US10464580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jul 23, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D5/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A manway assembly for a railroad tank car features a nozzle defining a central opening and having a sidewall, a cover, a hinge attaching the cover to the nozzle, and a seal assembly to seal the cover to the nozzle. The seal assembly may include a circumferential seal and a circumferential seal channel. The circumferential seal may include a top portion, a bottom portion opposite the top portion, and a side portion between the top portion and the bottom portion. An underside edge portion of the cover may be provided with the circumferential seal channel. The circumferential seal may be positioned within the circumferential seal channel. The circumferential seal may have a C-shaped cross section and may be positioned in the circumferential seal channel such that the top portion of the seal is seated against a top wall of the circumferential seal channel and the bottom portion of the seal is seated against a circumferential ledge of the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.