Centrifugal screen apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 9, 2018
Grant Date -
Feb 12, 2015
app pub date -
Sep 27, 2012
filing date -
Sep 27, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Screening apparatus includes a driving a shaft (12) into a screen housing (13) having a removable closure (14) and dividing wall (15) forming an underflow chamber (16) and an overflow chamber (17). The shaft (12) supports and drives an screen (21) comprising a plate steel basket carrier portion (22) axially spaced from intermediate ring frames (23) and an outer frame ring and flange (24), all interconnected by circumferentially spaced stringers (25) to form an all-welded, integral, generally truncated-conical screen (21) cage. The cage supports a wedge wire screening surface (26). The closure (14) and housing (13) mutually support an inlet assembly (27) comprising a chute (32) feeding the water and coarse coal to the inner end of the screen assembly (21). The integral, all welded screen (21) may be replaced as a unit without refurbishment.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B04B Class
- 93 Applications Filed
- 79 Patents Issued To-Date
- 84.95 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- B04B Class
- 30.14 % this patent is cited more than
- 7 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 | Jul 9, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 9, 2029 |
