Smelt spout cleaning assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 28, 2023
Grant Date -
Dec 2, 2021
app pub date -
May 27, 2021
filing date -
May 28, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An assembly for cleaning a smelt spout includes a cleaning head, a drive rod connected with the cleaning head, and a pneumatic or other drive connected to selectively extend or retract the drive rod. The drive rod may be connected with the cleaning head by a pivotal connection. The cleaning head may be bifurcated. The cleaning head may include a leading edge configured to engage and clean a spout opening from which smelt from a chemical reduction furnace flows to the spout. The assembly may further include a pivot point and, as the drive selectively extends the drive rod, torque about the pivot point produced by the cleaning head and an extending portion of the drive rod rotates the cleaning head downward to engage a smelt spout.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2021 Application Filing Year
- F23J Class
- 50 Applications Filed
- 23 Patents Issued To-Date
- 46 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F23J Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Aug 28, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 28, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 28, 2034 |
