Patent · US Active

Sprayer including pressure build-up discharge valve assembly with poppet valve having integrated spring

US7775405B2 · kind B2 · utility

14Cited by

21References

19Claims

0Family size

Assignee

Meadwestvaco Calmar GMBH · DE

Inventors

Steve L. Sweeton · Lake Winnebago, US
David L. Dejong · Ogden, US

Key dates

Filing date	Dec 22, 2006
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Jun 15, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7929
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A sprayer includes a discharge valve assembly and includes an integrated poppet valve, spring and volume reducer. The spring includes more than omega-shaped form, each with relatively flat sides. The spring can have sides with portions sufficiently wide to substantially extend across the valve chamber to provide stability to the spring and prevent buckling. The flat sided omega-form construct is relatively easy to manufacture via molding and the ends of such construction provide suitable locations for integrated molding with the valve and the volume reducer.

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