US3844491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material reclaiming and classifying apparatus
Assignee: Williams Patent Crusher and Pulverizer Co Inc
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Filing: 1972-12-20
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Granted: 1974-10-29
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Expires: 1992-12-20
Abstract
Abstract Apparatus for reducing industrial oversized bulky material and packer truck material which often is a mixture of magnetic and non-magnetic metallic and non-metallic waste material in which the reduction occurs in a shredding mill, the output of which goes to a magnetic classifier where the ferrous magnetic components are removed from the remainder of the waste material that is considered combustible. The non-metallic waste is conveyed to a gravity separator air chute where the properly sized material is floated out by air and the heavier material drops out and is recycled for further reduction. The properly sized material is air conveyed to a cyclone separator to remove it from the air stream for recycling of the air back to the air chute. The apparatus is used for classifying combustible waste material by applying the air flotation principle to sort the material according to size and to place the material of suitable size in a conveying air stream connected with a cyclone separator for removal from the air which when cleaned is recirculated in a continuous cycle.
Inventors
- 👤 R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:22
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; Y; Y02; Y02E; Y02E50/00; Y02E50/30; Y02P; Y02P70/00; Y02P70/10; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
248 words
Waste material classifying apparatus which comprises a shredder to which the waste material is fed, means adjacent said shredder to receive and vibratorially initiate separation of the shredded waste material, magnetic separator means adjacent said vibratorial means to separate shredded magnetic waste from shredded non-magnetic waste, a generally vertical air chute open at the top and bottom and having a feed opening between said top and bottom openings, first conveyor mean extending from adjacent said magnetic separator means to a connection with said chute feed opening to deliver shredded non-magnetic waste into said chute, second conveyor means having a receiving end adjacent said chute bottom opening and a delivery end connected into the feed to said shredder, a forced Air circulation system connected between said chute top opening and back to said chute between said bottom and feed openings, said circulation system including a cyclone separator to receive and collect waste material floated out of said chute top opening and a blower to extract clean air from said cyclone and deliver the air into said chute, said blower delivering the clean air at a velocity to force air borne waste material from said chute into said cyclone for separation in said cyclone and said second conveyor collecting the waste material falling out of said cute bottom opening and returning it to said shredder for further shredding, and means connected to said cyclone to receive waste material separated from the air moved in said circulation system by said blower.
Claim 2
Dependent Claim
248 words
Waste material classifying apparatus which comprises a shredder to which the waste material is fed, means adjacent said shredder to receive and vibratorially initiate separation of the shredded waste material, magnetic separator means adjacent said vibratorial means to separate shredded magnetic waste from shredded non-magnetic waste, a generally vertical air chute open at the top and bottom and having a feed opening between said top and bottom openings, first conveyor mean extending from adjacent said magnetic separator means to a connection with said chute feed opening to deliver shredded non-magnetic waste into said chute, second conveyor means having a receiving end adjacent said chute bottom opening and a delivery end connected into the feed to said shredder, a forced Air circulation system connected between said chute top opening and back to said chute between said bottom and feed openings, said circulation system including a cyclone separator to receive and collect waste material floated out of said chute top opening and a blower to extract clean air from said cyclone and deliver the air into said chute, said blower delivering the clean air at a velocity to force air borne waste material from said chute into said cyclone for separation in said cyclone and said second conveyor collecting the waste material falling out of said cute bottom opening and returning it to said shredder for further shredding, and means connected to said cyclone to receive waste material separated from the air moved in said circulation system by said blower.
Claim 3
Dependent Claim
48 words
The apparatus set forth in claim 1 wherein said blower developes an air velocity in said air chute of approximately 5, 000 feet per minute to effect separation of waste material which has a size more responsive to floating in said air circulation than that dominated by gravity.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |