Patent US4070275A successfully refreshed from Google Patents.
US4070275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material treating apparatus including pneumo-hydraulic vibrator
Assignee: Vish Minno-Geoloshki Institute-Nis
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Filing: 1976-05-20
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Granted: 1978-01-24
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Expires: 1996-05-20
Abstract
Abstract Material treating apparatus including one or more pneumohydraulic vibrators. The apparatus includes a container with cells separated by at least one valve lying on a supporting frame, the valve having a movable valve element which is urged toward its valve-closed position by springs. On one side of the valve there is an air cell connected with a source of air under pressure, and on the other side of the valve there is a second cell containing a liquid or a liquid suspension of material to be treated. When the air cell is subjected to air under pressure the movable valve element vibrates and generates intensive vibro-pulsation turbulent streams in the liquid material in the second cell.
Inventors
- 👤 Stoycho Mitrev Stoev
- 👤 Metodi Stoyanov Metodiev
- 👤 Lyubomir Vladimirov Kuzev
- 👤 Petko Georgiev Vedrichkov
- 👤 Ivan Mitrev Sapunarov
- 👤 Vassil Vladimirov Vassilev
- 👤 Spas Petkov Dimitrov
- 👤 Vihar Assenov Gasharov
- 👤 Sheko Kolev Russev
- 👤 Kostadin Georgiev Mitrev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:54
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
241 words
An apparatus for stratifying ore in particulate form suspended in a solution in accordance with the density of the ore particles and for washing the crude ore particles, such apparatus having a working cell for receiving a solution having ore particles to be treated, the improvement which comprises a gas cell disposed at least partially below said working cell, partition wall means separating the working cell and the gas cell and having at least one horizontal aperture therein for providing vertical communication between the working cell and the gas cell, a valve associated with the partition wall means and having a valve element disposed above the aperture and normally urged into a closed position by the weight of the liquid in the working cell when the solution having ore particles to be treated is introduced into the working cell, means for introducing a pressurized gas into said gas cell to urge said valve element against the force of the liquid to open said valve against the force of the liquid until sufficient gas pressure escapes into the working cell to cause the weight of the liquid to again close the valve, thereby producing a repetitive vibration of the valve element and a corresponding repetitive pressure surge within the liquid in the working cell, at least one inclined sieve mounted in the working cell above the valve, means for feeding particulate ore onto the sieve, and means for discharging stratified ore particles.
Claim 2
Independent Claim
241 words
An apparatus for stratifying ore in particulate form suspended in a solution in accordance with the density of the ore particles and for washing the crude ore particles, such apparatus having a working cell for receiving a solution having ore particles to be treated, the improvement which comprises a gas cell disposed at least partially below said working cell, partition wall means separating the working cell and the gas cell and having at least one horizontal aperture therein for providing vertical communication between the working cell and the gas cell, a valve associated with the partition wall means and having a valve element disposed above the aperture and normally urged into a closed position by the weight of the liquid in the working cell when the solution having ore particles to be treated is introduced into the working cell, means for introducing a pressurized gas into said gas cell to urge said valve element against the force of the liquid to open said valve against the force of the liquid until sufficient gas pressure escapes into the working cell to cause the weight of the liquid to again close the valve, thereby producing a repetitive vibration of the valve element and a corresponding repetitive pressure surge within the liquid in the working cell, at least one inclined sieve mounted in the working cell above the valve, means for feeding particulate ore onto the sieve, and means for discharging stratified ore particles.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |