Patent US3680796A successfully refreshed from Google Patents.
US3680796A
Expired / Lapsed
US
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Defiberation apparatus for separating cellulosic fibrous material from refuse
Assignee: OI Glass Inc
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Filing: 1970-06-02
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Granted: 1972-08-01
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Expires: 1990-06-02
Abstract
Abstract A defiberation apparatus for separating the cellulosic fibrous material contained in refuse, particularly municipal refuse, and preparing it for conversion into pulp suitable for various paper product manufacturing purposes. The novel defiberation apparatus of this invention utilizes a plurality of water jets which impart a disintegrating and classifying action to the refuse and place the cellulosic fibers in a liquid suspension. This liquid suspension or slurry then passes through three hoppers in the defiberation apparatus wherein the non-cellulosic solids are removed on screw conveyors.
Inventors
- 👤 Sergio F Galeano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
Defibration apparatus as set forth in claim 1, wherein said liquid-dispensing means comprises a plurality of nozzles positioned in the walls of said tank means.
Claim 2
Dependent Claim
46 words
Defibration apparatus as set forth in claim 2, wherein said adjustable means to control the flow of said cellulosic fiber-containing slurry from said tank means comprises an adjustable weir means positioned within said tank means and an outlet means in a wall of said tank means.
Claim 3
Dependent Claim
35 words
Defibration apparatus as set forth in claim 1, further including skimmer means mounted adjacent the top of said tank means for removing undesirable non-cellulosic matter from the surface of said slurry within said tank means.
Claim 4
Independent Claim
103 words
The method of separating the cellulosic fibrous material contained in refuse, comprising the steps of: depositing said cellulosic fiber-containing refuse in a tank; impinging liquid on said refuse as it is being deposited in said tank to thereby form a slurry including said cellulosic fiber-containing a refuse and said liquid in said tank; trapping undesirable non-cellulosic matter in collection hoppers formed in the bottom of said tank; removing said trapped non-cellulosic matter from said tank; skimming the surface of said slurry within said tank to remove all undesirable non-cellulosic matter therefrom; and controlling the flow of said cellulosic fiber-containing slurry from said tank.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |