Patent US3601324A successfully refreshed from Google Patents.
US3601324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse-reducing machine
Assignee: Individual
•
Filing: 1970-03-09
•
Granted: 1971-08-24
•
Expires: 1990-03-09
Abstract
Abstract The invention contemplates refuse-reducing mechanism employing relatively rotating coaxial structures to achieve a succession of stages of progressive size reduction, as refuse is conveyed through or shredded in the mechanism. At one general axial span, plural reduction stages proceed radially inwardly, from a load in zone at maximum diameter. After such reduction, the reduced material may be axially transposed to a second general axial span for further reduction, again with radially inward progression. Thus reduced, the material may be delivered for storage or for still further reduction or other processing, as desired. The entire multistage reducer is conveniently built into a vehicle body or trailer, or it may be used in stationary applications, as for apartment houses, hospitals, grocery stores and the like.
Inventors
- 👤 George B Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:34
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
270 words
Refuse-processing means, comprising a first drum with a closed outer wall and having a generally open end and a generally closed end, means supporting and rotating said drum on a generally horizontal axis, feed means communicating with the lower part of the generally open end of said drum for feeding refuse therein as said drum is rotated past an in feed location, the inner surface of said drum including radially inwardly extending refuse-engaging means for elevating refuse during the course of drum rotation from the in feed location to an upper location, first fixed constriction means positioned in a predetermined first clearance relation with the inner surface of said drum at a location intermediate the in feed location and said upper location during the course of movement to said upper location, whereby refuse of size to be fouled by the constriction at said clearance will be subjected to a first stage of breaking action prior to passage through said clearance; a second drum within said first drum and including an outer wall having circumferentially distributed openings therein, and means supporting and rotating said second drum on a generally horizontal axis, second constriction means positioned in a predetermined second clearance relation with the outer surface of said second drum in the range between said upper and lower locations, said second clearance and the constricting dimension of said openings being less than said first clearance, whereby refuse passing through said openings may have been subjected to a second stage of breaking action at said second clearance; and refuse-removal means within said second drum and poised to receive refuse passed by said openings.
Claim 2
Dependent Claim
270 words
Refuse-processing means, comprising a first drum with a closed outer wall and having a generally open end and a generally closed end, means supporting and rotating said drum on a generally horizontal axis, feed means communicating with the lower part of the generally open end of said drum for feeding refuse therein as said drum is rotated past an in feed location, the inner surface of said drum including radially inwardly extending refuse-engaging means for elevating refuse during the course of drum rotation from the in feed location to an upper location, first fixed constriction means positioned in a predetermined first clearance relation with the inner surface of said drum at a location intermediate the in feed location and said upper location during the course of movement to said upper location, whereby refuse of size to be fouled by the constriction at said clearance will be subjected to a first stage of breaking action prior to passage through said clearance; a second drum within said first drum and including an outer wall having circumferentially distributed openings therein, and means supporting and rotating said second drum on a generally horizontal axis, second constriction means positioned in a predetermined second clearance relation with the outer surface of said second drum in the range between said upper and lower locations, said second clearance and the constricting dimension of said openings being less than said first clearance, whereby refuse passing through said openings may have been subjected to a second stage of breaking action at said second clearance; and refuse-removal means within said second drum and poised to receive refuse passed by said openings.
Claim 3
Dependent Claim
15 words
Refuse-processing means according to claim 1, in which said drums are rotated in opposite directions.
Claim 4
Dependent Claim
25 words
Refuse-processing means according to claim 2, in which said first and second constriction means are at generally opposed sides of the axes of said drums.
Claim 5
Dependent Claim
15 words
Refuse-processing means according to claim 1, in which said drums are on a common axis.
Claim 6
Dependent Claim
32 words
Refuse-processing means according to claim 1, in which Said first constriction means comprises plural angularly spaced constrictor elements having progressively decreasing clearance with said first drum in the direction of first-drum rotation.
Claim 7
Dependent Claim
32 words
Refuse-processing means according to claim 1, in which said second constriction means comprises plural angularly spaced constrictor elements having progressively decreasing clearance with said second drum in the direction of second-drum rotation.
Claim 8
Dependent Claim
35 words
Refuse-processing means according to claim 1, in which said second constriction means includes a generally cylindrical grid carried by said first drum and interposed between said second drum and the wall of said first drum.
Claim 9
Dependent Claim
50 words
Refuse-processing means according to claim 7, in which third constriction means is fixedly positioned in a predetermined third clearance relation with the outer profile of said grid, whereby a further stage of breaking action may be operative upon refuse passing said first constriction and prior to passage through said grid.
Claim 10
Dependent Claim
26 words
Refuse-processing means according to claim 8, in which said grid and said further constriction means include radially overlapping but axially clearing elements at angularly spaced locations.
Claim 11
Dependent Claim
25 words
Refuse-processing means according to claim 8, in which said grid and said second drum include radially overlapping but axially clearing elements at angularly spaced locations.
Claim 12
Dependent Claim
23 words
Refuse-processing means according to claim 1, in which said feed means is a hopper communicating with the lower part of said first drum.
Claim 13
Dependent Claim
29 words
Refuse-processing means according to claim 1, and including a fixed upstanding wall facing and substantially closing the end of said first drum in the region above said feed means.
Claim 14
Dependent Claim
37 words
Refuse-processing means according to claim 12, in which said wall includes a generally radially and axially extending barrier element in relatively close radial clearance with said grid and near the top of the path of grid movement.
Claim 15
Dependent Claim
22 words
Refuse-processing means according to claim 1, in which said first drum is generally frustoconical with said generally open end the larger end.
Claim 16
Dependent Claim
29 words
Refuse-processing means according to claim 1, in which said radially inwardly extending refuse-engaging means includes a plurality of generally axially and radially extending blade elements at angularly spaced locations.
Claim 17
Dependent Claim
35 words
Refuse-processing means according to claim 1, in which the substantially closed end of said first drum includes a central opening and in which said refuse-removal means includes a discharge element extending through said central opening.
Claim 18
Dependent Claim
96 words
Refuse-processing means according to claim 16, in which a third rotary drum is positioned axially adjacent the generally closed end of said first drum and in which said discharge element extends into said third drum for discharge therein, a third constriction element fixed against rotation and positioned in predetermined relatively close clearance relation with the inner wall of said third drum for establishing a third stage of breaking action operative upon refuse received from said discharge element, and further refuse-removal means within said third drum and poised to receive refuse passed by said third constriction element.
Claim 19
Dependent Claim
23 words
Refuse-processing means according to claim 16, in which said third drum is carried by said first drum at the generally closed end thereof.
Claim 20
Dependent Claim
183 words
Refuse-processing means, comprising a drum with a closed outer wall and having a generally open end and a generally closed end, means supporting and rotating said drum on a generally horizontal axis, feed means communicating with the lower part of the generally open end of said drum for feeding refuse therein as said drum is rotated past an in feed location, the inner surface of said drum including radially inwardly extending refuse-engaging means for elevating refuse during the course of drum rotation from the in feed location to an upper location, fixed constriction means positioned in predetermined clearance relation with the inner surface of said drum and inTermediate the in feed location and said upper location during the course of movement to said upper location, whereby refuse of size to be fouled by said constriction means will be subjected to breaking action prior to passage past said clearance relation; a second drum within said first drum and including an outer wall having circumferentially distributed openings therein, and refuse-removal means within said drum and poised to receive refuse that has passed said clearance relation.
Claim 21
Dependent Claim
183 words
Refuse-processing means, comprising a drum with a closed outer wall and having a generally open end and a generally closed end, means supporting and rotating said drum on a generally horizontal axis, feed means communicating with the lower part of the generally open end of said drum for feeding refuse therein as said drum is rotated past an in feed location, the inner surface of said drum including radially inwardly extending refuse-engaging means for elevating refuse during the course of drum rotation from the in feed location to an upper location, fixed constriction means positioned in predetermined clearance relation with the inner surface of said drum and inTermediate the in feed location and said upper location during the course of movement to said upper location, whereby refuse of size to be fouled by said constriction means will be subjected to breaking action prior to passage past said clearance relation; a second drum within said first drum and including an outer wall having circumferentially distributed openings therein, and refuse-removal means within said drum and poised to receive refuse that has passed said clearance relation.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |