METHOD AND APPARATUS FOR CONTROLLING FLUID FLOW RATE CHARACTERISTICS OF A VALVE ASSEMBLY
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Nov 12, 2009
app pub date -
May 6, 2008
filing date -
May 6, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A valve assembly controller is configured with a table having a set of command signal values representing commanded positions of a valve element to obtain a desired flow rates through a fluid pathway. The table also includes a set of empirically measured drive signal values representing the actual positions of the valve element required to obtain the desired flow rates through the fluid pathway. During operation, in order to obtain a desired flow rate through the fluid pathway, the controller intercepts a command signal from a command signal source and provides the valve assembly with a corresponding drive signal based upon the table values. The controller therefore controls the positioning of the valve element such that the valve element is opened to a position either greater or less than the commanded position in order to provide the desired flow through the fluid pathway.
First Claim
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Family
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WOODWARD HRT INC | 25200 WEST RYE CANYON ROAD VALENCIA CA 91355 |
International Classification(s)

- 2008 Application Filing Year
- F16K Class
- 1089 Applications Filed
- 655 Patents Issued To-Date
- 60.15 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Boardman, Delton | Acton , US | 2 | 8 |
# of filed Patents : 2 Total Citations : 8 | |||
Deller, Robert | Valencia , US | 1 | 8 |
# of filed Patents : 1 Total Citations : 8 | |||
Parker, Lawrence Edward | Castaic , US | 2 | 8 |
# of filed Patents : 2 Total Citations : 8 |
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Patent Citation Ranking
- 8 Citation Count
- F16K Class
- 5.26 % this patent is cited more than
- 16 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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