Patent · US Expired

Sampling valve

US5265483A · kind A · utility

16Cited by

16References

19Claims

0Family size

Assignee

Sentry Equipment Corp. · US

Inventors

Michael D. Farrell · Brookfield, US
Eugene R. Rommelfaenger · Neosho, US

Key dates

Filing date	Nov 24, 1992
Grant date	Nov 30, 1993
Priority date	—
Expiry date	Nov 24, 2012

Classification

Technology area (CPC G)Physics
CPC primaryG01N2001/2071
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The improved sampling valve assembly includes a diverting valve and an optional isolation valve in series for providing redundant shutoff. The assembly includes rounded-end, side-ported needles (as part of an easily-replaced needle assembly) to pierce the receptacle septum without "coring" and help prevent liquid "carryover." The assembly also has features providing metered, low pressure flow into the receptacle and very low dead volume. A receptacle guide has an interior cavity shaped like the receptacle to guide the inserted receptacle for aligned engagement of the septum with the needle assembly. The needle assembly is removable by removing only the keeper nut.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.