Valve closing device and valve actuating assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 26, 2019
Grant Date -
Jan 21, 2016
app pub date -
Mar 5, 2014
filing date -
Mar 5, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
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Abstract
For a valve closing device (8), including an output shaft (9) for connecting a valve (3) and an input shaft (10) for connecting an actuating drive (2), it is provided that an emergency drive (11) for driving the output shaft (9) in the event of a mains power failure is designed as a constant force spring motor (28) and/or a force flow from the emergency drive (11) to the output shaft (9) is merged with a force flow from the input shaft (10) to the output shaft (9) by an overriding gear arrangement (16) and/or the emergency drive (11) is locked and released by a locking device (19).
First Claim
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International Classification(s)
- 2014 Application Filing Year
- F16K Class
- 1571 Applications Filed
- 1342 Patents Issued To-Date
- 85.43 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16K Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 26, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 26, 2030 |
