US3856217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination shredder and air-classification equipment
Assignee: GARBALIZER CORP
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Filing: 1973-06-04
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Granted: 1974-12-24
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Expires: 1993-06-04
Abstract
Abstract A combination shredder and air classification system wherein the cutting and automatic pre-separation by the shredder of waste materials being processed is introduced into an airstream serving as an air classifier such that pieces of shredded material of different weights will descend into respective conveyor systems. The airstream produced results in an entrainment of the light materials that are carried by such airstream into and through a discharge housing to be routed to a furnace or to other processing. Supplemental airstream generating means is provided and is directed into the primary airstream, so as to aid in the continued transport of entrained materials.
Inventors
- 👤 J Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:28
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/286; B03; B03B; B03B9/00; B03B9/06; B07; B07B; B07B4/00; B07B4/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
In combination, revolving blade means for shredding materials including metals in pieces; means disposed immediately and essentially vertically beneath said shredding means for directly receiving and air-classifying said pieces, including metals, into a plurality of groups progressively spaced from said airclassifying means, which groups are of essentially differing characteristic weights, the progressively lighter of said groups being progressively farthest removed from said air-classifying means, said air-classifying means including means for producing a vertically thin, horizontally elongate stream of classifying air, and means proximate said air-classifying means for separately receiving said groups, wherein said separately receiving means comprises plural, parallel, endless belt-type conveyors having respective, corresponding, opposite side edge margins, and wherein said combination includes upwardly convex divider means overlapping corresponding side edge margins of said conveyors.
Claim 2
Dependent Claim
126 words
In combination, revolving blade means for shredding materials including metals in pieces; means disposed immediately and essentially vertically beneath said shredding means for directly receiving and air-classifying said pieces, including metals, into a plurality of groups progressively spaced from said airclassifying means, which groups are of essentially differing characteristic weights, the progressively lighter of said groups being progressively farthest removed from said air-classifying means, said air-classifying means including means for producing a vertically thin, horizontally elongate stream of classifying air, and means proximate said air-classifying means for separately receiving said groups, wherein said separately receiving means comprises plural, parallel, endless belt-type conveyors having respective, corresponding, opposite side edge margins, and wherein said combination includes upwardly convex divider means overlapping corresponding side edge margins of said conveyors.
Claim 3
Dependent Claim
102 words
In combination, means for shredding materials in pieces; means disposed beneath said shredding means for air-classifying said pieces into plural groups of essentially differing characteristic weights, and means proximate said air-classifying means for separately receiving said groups, wherein such combination includes an updraft exhaust conduit positioned at a location remote from said air-classifying means and constructed to receive light-weight materials as do not fall directly onto said separately receiving means, and wherein said combination includes a supplemental blower, and secondary air-stream conduit means coupled to said supplemental blower and upwardly branching into said updraft exhaust conduit for increasing air volume through-put thereat.
Claim 4
Dependent Claim
102 words
In combination, means for shredding materials in pieces; means disposed beneath said shredding means for air-classifying said pieces into plural groups of essentially differing characteristic weights, and means proximate said air-classifying means for separately receiving said groups, wherein such combination includes an updraft exhaust conduit positioned at a location remote from said air-classifying means and constructed to receive light-weight materials as do not fall directly onto said separately receiving means, and wherein said combination includes a supplemental blower, and secondary air-stream conduit means coupled to said supplemental blower and upwardly branching into said updraft exhaust conduit for increasing air volume through-put thereat.
Claim 5
Dependent Claim
107 words
In combination, gravity-feed shredder means for receiving and shredding in pieces a shredder through-put of a heterogenious mixture of materials; means for blowing a stream of air into and through said materials immediately underneath said shredder means while said materials are just dropping through said shredder means in pre-separated form for essentially air-classifying such cut materials into, plural, essentially differing groups, and means disposed downstream from said blowing means for separately collecting said groups, and wherein said combination includes means for injecting a supplemental airstream into air-entrained materials passing said separately collecting means, and housing means constraining said entrained materials and air to passage for further processing.
Claim 6
Dependent Claim
107 words
In combination, gravity-feed shredder means for receiving and shredding in pieces a shredder through-put of a heterogenious mixture of materials; means for blowing a stream of air into and through said materials immediately underneath said shredder means while said materials are just dropping through said shredder means in pre-separated form for essentially air-classifying such cut materials into, plural, essentially differing groups, and means disposed downstream from said blowing means for separately collecting said groups, and wherein said combination includes means for injecting a supplemental airstream into air-entrained materials passing said separately collecting means, and housing means constraining said entrained materials and air to passage for further processing.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |