Patent · US Expired

Fluid handling assembly

US3951167A · kind A · utility

18Cited by

4References

11Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Gary W. Howell · Elkton, US
Danahey Ryan · Newark, US

Key dates

Filing date	Dec 5, 1974
Grant date	Apr 20, 1976
Priority date	—
Expiry date	Dec 5, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87885
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Disclosed herein is a fluid handling assembly comprising a multi-valve assembly, a probe connected to a first valve structure in said multi-valve assembly, a plurality of secondary fluid sources connected to secondary valve in said multi-valve assembly and a pump connected to said multi-valve assembly. Each of the valves in the multi-valve assembly comprise valve seats, flexible diaphragms coacting with the valve seat to form leak-tight chambers containing orifices connecting the various channels in the valves, and a means to move the diaphragm to close off the connection between the orifices and thereby shut the valve.

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