B04B 1/20
Discharging solid particles from the bowl by a conveying screw coaxial with
Official title: discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
B04B1/20 (Discharging solid particles from the bowl by a conveying screw coaxial with) appears on 436 US grants and 247 published applications in this corpus.
Search patents in B04B- Granted patents
- 436
- Published applications
- 247
- Assignees
- 172
- Inventors
- 556
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 13 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 9 | 0 |
| 1999 | 13 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 1 |
| 2002 | 4 | 3 |
| 2003 | 10 | 7 |
| 2004 | 7 | 12 |
| 2005 | 4 | 9 |
| 2006 | 12 | 10 |
| 2007 | 7 | 4 |
| 2008 | 7 | 7 |
| 2009 | 4 | 6 |
| 2010 | 2 | 10 |
| 2011 | 7 | 10 |
| 2012 | 4 | 12 |
| 2013 | 10 | 11 |
| 2014 | 10 | 13 |
| 2015 | 11 | 21 |
| 2016 | 15 | 12 |
| 2017 | 5 | 12 |
| 2018 | 20 | 11 |
| 2019 | 11 | 8 |
| 2020 | 12 | 18 |
| 2021 | 11 | 13 |
| 2022 | 15 | 13 |
| 2023 | 12 | 13 |
| 2024 | 6 | 4 |
| 2025 | 7 | 6 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B04B 1/2016Driving control or mechanisms96
- B04B 2001/2083Configuration of liquid outletsIndexing code88
- B04B 2001/2041With baffles, plates, vanes or discs attached to the conveying screwIndexing code80
- B04B 2001/2033With feed accelerator inside the conveying screwIndexing code57
- B04B 2001/2091Configuration of solids outletsIndexing code43
- B04B 2001/205With special construction of screw threadIndexing code38
- B04B 1/2008With an abrasion-resistant conveyor or drum36
- B04B 2001/2075With means for recovering the energy of the outflowing liquidIndexing code31
Recent patents
- Transverse disc of a centrifuge screw, and solid-bowl screw centrifuge22 Sep 2026US 12,741,289 B2Flottweg SE
- Baffle assemblies, nozzles, and related methods for solid discharges of centrifuge separators16 Jun 2026US 12,654,176 B2Derrick Corporation
- Solid-bowl screw centrifuge7 Apr 2026US 12,594,560 B2GEA Mechanical Equipment GmbH
- Centrifuges and related methods of use to dewater mature (fluid) fine tailings10 Mar 2026US 12,569,862 B2Sentrimax Centrifuges Inc.
- Method for processing explosive products in a separating machine, and separating machine20 Jan 2026US 12,528,092 B2Flottweg SE
- Ai controlled decanter26 Feb 2026US 2026/0054273 A1GEA Westfalia Separator Group GmbH
- Method of separating solids from a solution derived from plasma18 Sep 2025US 2025/0288925 A1Csl Behring (Australia) Pty Ltd
- Solid bowl screw centrifuge31 Jul 2025US 2025/0242359 A1GEA Westfalia Separator Group GmbH
- Decanter centrifuge with lamellae for improved fines recovery19 Jun 2025US 2025/0196163 A1FLSmidth A/S
- Systems and methods for operating a centrifuge system29 May 2025US 2025/0170587 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Method and apparatus for controlling and monitoring continuous feed centrifuge98US 5,948,271 ABaker Hughes Incorporated · 1999
- Disc-decanter centrifuge70US 5,364,335 ADorr-Oliver Incorporated · 1994
- Method and apparatus for controlling and monitoring continuous feed centrifuge62US 6,143,183 ABaker Hughes Incorporated · 2000
- Centrifuge control system60US 5,857,955 AM-I Drilling Fluids Company · 1999
- Apparatus for centrifuging a slurry58US 7,387,602 B1Derrick Corporation · 2008