US3565350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comminuting apparatus
Assignee: Wascon Systems Inc
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Filing: 1968-05-20
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Granted: 1971-02-23
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Expires: 1988-05-20
Abstract
Abstract A two stage comminuting apparatus is provided for preparing waste solids for disposal. The apparatus contemplates a wet pulping of solids for the purpose of reducing the solids to a predetermined size, such pulping being effected by an abrading type nonjamming pulper. The pulped solids then may be fed to a positive grinder, after passing through a sump or other type of trap for selecting nongrindables therefrom. The positive grinder further reduces in size those particles which have been metered to size in the pulping stage.
Inventors
- 👤 William H Combs
- 👤 Sam N Craig
- 👤 Ellis R Warner Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A communiting apparatus for preparation of waste solids for disposal comprising means for continuously pulping solids by abrasion in a fluid medium to a predetermined reduced particle size and means for grinding particles of reduced size; said grinding means being connected in series to said pulping means, downstream thereof, including a trap means disposed in series connection between said pulping means and said grinding means for accumulating selected particles not readily grindable by said grinding means.
Claim 2
Dependent Claim
76 words
A communiting apparatus for preparation of waste solids for disposal comprising means for continuously pulping solids by abrasion in a fluid medium to a predetermined reduced particle size and means for grinding particles of reduced size; said grinding means being connected in series to said pulping means, downstream thereof, including a trap means disposed in series connection between said pulping means and said grinding means for accumulating selected particles not readily grindable by said grinding means.
Claim 3
Dependent Claim
43 words
The apparatus defined in claim 4, wherein said pulping means is of the liquid-receiving type having movable abrading plate means mounted adjacent outlet openings of selected size; said opening size being determined by the desired predetermined size of particles to be discharged therethrough.
Claim 4
Dependent Claim
46 words
The apparatus defined in claim 4, wherein said pulping means comprises a tank having an upper inlet and a plurality of lower outlet openings, with a rotatable abrading plate disposed adjacent said openings for reducing the size of solid particles to be impelled through said openings.
Claim 5
Dependent Claim
15 words
The apparatus defined in claim 1, wherein said trap means is of the sump type.
Claim 6
Dependent Claim
16 words
The apparatus defined in claim 1, wherein said positive grinding means is of the particle-chopping type.
Claim 7
Dependent Claim
14 words
The apparatus defined in claim 5, wherein said positive grinding means includes meshing teeth.
Claim 8
Dependent Claim
16 words
The apparatus defined in claim 1, wherein said positive grinding means is of the pumping type.
Claim 9
Dependent Claim
33 words
The apparatus defined in claim 1, wherein said pulping means and said grinding means are operative in a water medium, including a dewatering unit serially connected to said positive grinding means downstream thereof.
Claim 10
Dependent Claim
31 words
The apparatus defined in claim 8, including return line means between said dewatering unit and said pulping means for returning water extracted from pulped and ground solids in said dewatering unit.
Claim 11
Dependent Claim
77 words
The apparatus defined in claim 2 and said plate means being rotatable for reducing the size of solid particles to be impelled through said openings and including a trap means disposed in series connection between said pulping means and said grinding means for accumulating selected paRticles not readily grindable by said grinding means and wherein said trap means is of the sump type, wherein said positive grinding means is of the pumping type having intermeshing particle-chopping teeth.
Claim 12
Dependent Claim
38 words
The apparatus defined in claim 1, wherein said pulping means includes an abrading plate means comprising a rotatable plate which includes means for impelling particles of reduced size in the zone through an outlet of said pulping means.
References Cited (Backward Citations)
US2072710A
Cited
US2672075A
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US2674927A
Cited
US3005597A
Cited
US3164329A
Cited
US3450354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |