Piston-type quantity meter
US6490918B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A piston-type quantity meter including a metering chamber having a bottom, a cylindrical chamber shell, a cover, a central journal, a guide ring, two inlet opening formed, respectively, in the chamber bottom and the chamber cover, and a radial outlet opening formed in the chamber shell, an annular piston located in the chamber interior and having a cylindrical piston skirt, guide slot means formed in the piston skirt and corresponding to a width of separation wall located in the metering chamber for pinning the piston on the separation wall, and a radial outlet opening associated with the outlet opening formed in the chamber shell, and a seal strip for sealing at least one of a slit formed between the inner surface of the chamber shell and an outer surface of the annular piston, and a slit formed between the inner surface of the piston and the guide ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.