Patent · US Active

Check valve having polymeric seat and poppet

US10323763B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

Waters Technologies Corporation · US

Inventors

Sylvain Cormier · Mendon, US
Joshua A. Shreve · Franklin, US

Key dates

Filing date	Jul 30, 2014
Grant date	Jun 18, 2019
Priority date	—
Expiry date	Jul 20, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01N2030/328
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A check valve comprises a valve seat element along a fluid path that is formed of a polymeric material and comprises a hole that extends from an input end of the valve seat element to an output end of the valve seat element. The valve seat element includes an inner taper that transitions the input end to the output end, the valve seat element including a sealing surface along the inner taper. A poppet body is formed of a polymeric material and configured to engage the internal tapered sealing surface of the valve seat element. The poppet body moves between a first position at which the poppet body sealingly engages the tapered sealing surface of the valve seat element and a second position at which the poppet body is separate from the inner taper of the valve seat member.

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