Valve assembly design
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Feb 20, 2003
app pub date -
Aug 14, 2002
filing date -
Aug 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Valve assemblies are provided that are adapted and configured to quickly start up and shut off a spray or liquid flow. Exemplary valve assemblies according to the present disclosure effectively minimize and/or prevent dripping from occurring during the start up and shut off of the valve assembly, and/or at times when flow through the valve assembly is suspended. A non-constant clearance between a spring-biased piston and an elongated member is provided, and an elastic member seals therebetween. As the elastic member interacts with the piston in different clearance regions, variable frictional forces are applied to the piston. In further exemplary embodiments, the surface area for force application from the upstream side exceeds the surface area for application of force from the downstream side. The disclosed valve assemblies have a variety of applications, including spray or liquid flow applications that include nozzles and orifices, such as fuel supply applications, agricultural applications and spray drying applications.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully