US4729830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-phase separation device using doubly-canted decanter
Assignee: KOTOBUKI IRON WORKERS Ltd
•
Filing: 1986-12-17
•
Granted: 1988-03-08
•
Expires: 2006-12-17
Abstract
Abstract A solid-and-liquid separation device revolving at high speed, comprising a bowl having a screw therein, said bowl being formed with cylindrical and canted sections, thereby permitting separation of a fluid containing solids into light and heavy liquids and solids.
Inventors
- 👤 Souroku Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
B; B01; B01D; B01D43/00; B04; B04B; B04B1/00; B04B1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A three phase separation device for fluids, comprising means for enabling practicable three-phase separation of a fluid comprising heavy and light liquids and solids, including, a bowl for the fluid including a hollow cylindrical section having first and second ends, a canted section connected to said first end of said cylindrical section and having first and second portions of different tapering angles including a first portion adjacent said cylindrical section which is of a larger tapering angle than said second portion which is remote from said cylindrical section, a screw rotatably mounted in said bowl and extending through said cylindrical section and said canted section and having a screw thread conforming to the configuration of each section, a heavy liquid exit port on said second portion of said cylindrical section adjacent its exterior side, and a light exit port on said cylindrical section spaced radially inwardly of said heavy liquid exit port and near the surface of the fluid.
Claim 2
Dependent Claim
159 words
A three phase separation device for fluids, comprising means for enabling practicable three-phase separation of a fluid comprising heavy and light liquids and solids, including, a bowl for the fluid including a hollow cylindrical section having first and second ends, a canted section connected to said first end of said cylindrical section and having first and second portions of different tapering angles including a first portion adjacent said cylindrical section which is of a larger tapering angle than said second portion which is remote from said cylindrical section, a screw rotatably mounted in said bowl and extending through said cylindrical section and said canted section and having a screw thread conforming to the configuration of each section, a heavy liquid exit port on said second portion of said cylindrical section adjacent its exterior side, and a light exit port on said cylindrical section spaced radially inwardly of said heavy liquid exit port and near the surface of the fluid.
References Cited (Backward Citations)
GB934998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |