Ullage gage
US4099332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1977 |
| Grant date | Jul 11, 1978 |
| Priority date | — |
| Expiry date | Apr 12, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ullage gage for directly and accurately measuring the ullage of a cargo tank of a vessel such as an oil tanker without the necessity of opening the tank. The gage is comprised of a calibrated sword which is affixed to the underside of a cover plate which also contains a viewport for viewing the sword. The cover plate sealingly covers a service opening in the tank. The first calibration mark on the sword coincides with the underside of the deck of the vessel and has a value equal to the actual vertical distance from the lip of the ullage hatch to the underside of the deck at a point adjacent the gage. An adjustable means is provided to adjust the sword with relation to the cover plate to compensate for different deck thicknesses and/or deck camber of the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.