Thief hatches with diaphragm assisted sealing
US10443301B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Sep 16, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/778
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Thief hatches with diaphragm assisted sealing are disclosed. An example apparatus includes a base attachable to a tank, and a cover attachable to the base via a hinge. The example apparatus further includes a vacuum seal assembly couplable to the cover, and a diaphragm coupled to a stem of the vacuum seal assembly. The diaphragm is moveable in response to a pressure differential between a first pressure within the tank and a second pressure exterior to the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.