Fluid flow control valves
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 11, 2006
Grant Date -
Jun 17, 2004
app pub date -
Oct 30, 2001
filing date -
Oct 31, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fluid flow control valve system has a plurality of pairs of 3 port, 2 position (3/2) control valves (6, 6′) each valve being movable between its two positions by a pair of electrically-operable actuators (1, 2). A logic controller selectively generates electrical control signals for independently controlling operation of the pairs of 3/2 control valves, and a circuit means (11) is associated with each 3/2 control valve pair (6, 6′) to receive the control signals and provide electrical outputs to eit actuators (1, 2) of each 3/2 control valve of each pair. Variable switch means (14) forming part of the circuit means (11) pr the actuators (1, 2) to which the output is applied. Varying the switch means (14) programmes the fluid output mode of each 3/2 control valve pair to provide any one of a number of different effective valve types.
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