Flow control actuator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 2017
Issued Date -
N/A
app pub date -
Apr 5, 2011
filing date -
Apr 5, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
|
US Family Size
|
Non-US Coverage
|
|
Patent Longevity
|
Forward Citations
|
Abstract
An actuator (1′) for driving a regulating element (30) for controlling a fluid flow in a flow channel (29) includes an electric motor (4) for driving the regulating element (30) and a control unit (2) for controlling a current provided to the electric motor (4). A resistive element (3) including a resistor (5) and a NTC thermistor (6) connected in parallel across the resistor (5) is positioned in a current path from the control unit (2) to the motor (4). Accordingly, when the ambient temperature increases, the decreasing resistance of the resistive element (3) counterbalances the increasing resistance of the motor windings, resulting in a less varying current from the control unit (2) to the motor (4) and therewith in a less varying output torque of the motor (4).
First Claim
Other Claims data not available
Family
- No Family data available.
International Classification(s)
- 2011 Application Filing Year
- F16K Class
- 1299 Applications Filed
- 961 Patents Issued To-Date
- 73.98 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F16K Class
- 31.02 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 30, 2028 |
