US3812970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating apparatus
Assignee: Individual
•
Filing: 1972-11-02
•
Granted: 1974-05-28
•
Expires: 1992-11-02
Abstract
Abstract A settler type separating apparatus comprises a tank for holding liquid having inlet and outlet ports; a plurality of horizontally disposed particle-receiving trays superposed parallel on each other at prescribed intervals, each having a plurality of cavities formed on the upper side; and a screen stretched over the upper open side of the cavities of the tray, wherein impure particles trapped in said cavities are obstructed from escaping by a boundary layer formed by the screen.
Inventors
- 👤 M Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
167 words
A settler type separating apparatus comprising a vessel for holding liquid having an inlet and outlet spaced from each other towards opposite ends of said vessel; a plurality of longitudinal particle-receiving trays horizontally disposed in the vessel between at least said inlet and outlet and superposed in parallel and vertically spaced relationship with each other at prescribed vertical intervals, each of said trays having upwardly opening cavities; a fine mesh screen mounted over each tray to cover the upper opening of the cavities; and partition means disposed between said inlet and one side of said trays constructed and arranged so as to cause liquid introduced through said inlet to run over said screens in laminar flow and the screens Are constructed and arranged, so that the flow of the liquid over the screens forms a boundry layer, said screens permitting particles in the liquid to settle from the liquid into the cavities, but the escape of said particles from the cavities being obstructed by the boundary layer.
Claim 2
Dependent Claim
167 words
A settler type separating apparatus comprising a vessel for holding liquid having an inlet and outlet spaced from each other towards opposite ends of said vessel; a plurality of longitudinal particle-receiving trays horizontally disposed in the vessel between at least said inlet and outlet and superposed in parallel and vertically spaced relationship with each other at prescribed vertical intervals, each of said trays having upwardly opening cavities; a fine mesh screen mounted over each tray to cover the upper opening of the cavities; and partition means disposed between said inlet and one side of said trays constructed and arranged so as to cause liquid introduced through said inlet to run over said screens in laminar flow and the screens Are constructed and arranged, so that the flow of the liquid over the screens forms a boundry layer, said screens permitting particles in the liquid to settle from the liquid into the cavities, but the escape of said particles from the cavities being obstructed by the boundary layer.
Claim 3
Dependent Claim
28 words
The separating apparatus according to claim 1 wherein the cavities constitute narrow grooves extending at right angles to the liquid flowing direction from the inlet to the outlet.
Claim 4
Dependent Claim
66 words
The separating apparatus according to claim 2 wherein the particle-receiving trays are each built of a bottom plate, a plurality of partition walls set up on the bottom plate at right angles to the flow direction of the liquid and side boards fitted to the opposite edges of the partition walls and the aforesaid grooves are defined by said bottom plate, partition walls and side boards.
Claim 5
Dependent Claim
16 words
The separating apparatus according to claim 3 wherein said partition means comprises a vertical perforated wall.
Claim 6
Dependent Claim
18 words
The separating apparatus according to claim 4 wherein the inlet and outlet are each provided with a strainer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |