US3788568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of salvageable components from waste material
Assignee: Black Clawson Fibreclaim Inc
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Filing: 1973-01-02
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Granted: 1974-01-29
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Expires: 1993-01-02
Abstract
Abstract Glass and aluminum are recovered from a mixture of solid waste, such as municipal waste, by reducing the frangible portions of the waste to a size less than a preselected maximum size, centrifugally treating the reduced portions to divide the glass, aluminum and other inorganics from the fibrous and other organic components, separating the aluminum from the glass and other inorganics, and segregating the colorless glass from the remaining, relatively opague inorganics.
Inventors
- 👤 P Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:19
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; B03B9/062; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y02W30/60; Y02W30/62; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
The combination defined in claim 1 wherein said perforations in said first bedplate portion are smaller than about three-fourths inch in diameter and wherein said perforations in said second bedplate portion are of the order of 2 inches in diameter.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |