Patent US3724176A successfully refreshed from Google Patents.
US3724176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for heat treatment of finely dispersed material
Assignee: Individual
•
Filing: 1971-05-19
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Granted: 1973-04-03
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Expires: 1991-05-19
Abstract
Abstract A device for heat treatment of finely dispersed material in which there are several stages of duplex and single cyclone-heatexchangers with the last cyclone in the line serving as a precipitator and being of a multistage construction.
Inventors
- 👤 K Vishnevsky
- 👤 S Belyanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
B; B01; B01D; B01D51/00; B04; B04C; B04C5/00; B04C5/24; F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A device for the heat treatment of finely dispersed material comprising: a first stage consisting of two cyclone-heatexchangers, dust ducts and gas ducts providing communication between said heat-exchangers, a second stage constituted by a single cyclone heat-exchanger, second dust ducts and gas ducts connecting the single cyclone heat-exchanger with the heat exchangers of the first stage; a third stage consisting of two cyclone-heat-exchangers, third gas ducts and dust ducts providing communication between the heat-exchangers of the third stage and the heat-exchanger of the second stage; a fourth stage defined by a single cyclone-heat-exchanger, said heat-exchanger of the fourth stage being of a multistage construction and serving as a precipitator, and fourth dust ducts and gas ducts connecting the heat-exchanger of the fourth stage with the heat-exchangers of the third stage.
Claim 2
Independent Claim
130 words
A device for the heat treatment of finely dispersed material comprising: a first stage consisting of two cyclone-heatexchangers, dust ducts and gas ducts providing communication between said heat-exchangers, a second stage constituted by a single cyclone heat-exchanger, second dust ducts and gas ducts connecting the single cyclone heat-exchanger with the heat exchangers of the first stage; a third stage consisting of two cyclone-heat-exchangers, third gas ducts and dust ducts providing communication between the heat-exchangers of the third stage and the heat-exchanger of the second stage; a fourth stage defined by a single cyclone-heat-exchanger, said heat-exchanger of the fourth stage being of a multistage construction and serving as a precipitator, and fourth dust ducts and gas ducts connecting the heat-exchanger of the fourth stage with the heat-exchangers of the third stage.
References Cited (Backward Citations)
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US2663561A
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US2797076A
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US2841385A
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US3212764A
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GB982719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |