US3603514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrap reducing and refining apparatus
Assignee: Williams Patent Crusher and Pulverizer Co Inc
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Filing: 1969-07-28
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Granted: 1971-09-07
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Expires: 1989-07-28
Abstract
Abstract Apparatus for reducing scrap material, such as automobile bodies and waste objects of a bulky and space consuming character, in a unified plant that is operable on a continuous schedule to reduce the scrap to convenient sizes in advance of processing the same through a shredding mill and thence to apparatus for densifying the output of the shredding mill, and for recycling oversize portions of the product for further shredding treatment so that substantially all of the usable scrap may be recovered and separated from those portions that are not usable.
Inventors
- 👤 Robert M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:49
CPC Classifications
B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; B02; B02C; B02C23/00; B02C23/08; B02C23/10; B02C23/12; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
In waste material reducing and refining apparatus, the combination which includes: a waste material impact reducing and shredding unit having yieldable impact blocks and a series of moving hammers impacting the waste material against said impact blocks, conveyor means feeding waste material to said reducing and shredding unit, material classifier unit connected to said reducing and shredding unit to receive reduced and shredded waste material therefrom, said classifier unit having a plurality if discharge outlets, a first conveyor connected to one of said discharge outlets to move reduced and refined product, a second conveyor connected to another of said discharge outlets and to said feeding conveyor means for recirculating material back to said reducing and shredding unit, and a third conveyor connected to yet another of said discharge outlets to move residual waste material, said third conveyor includes waste material separation means, a receiver for the separated waste material, an inert gaseous atmosphere generating means connected in a closed circuit through said reducing and shredding unit to establish an inert atmosphere in said unit, and means delivering the waste material from said receiver to said generating unit for consumption therein.
Claim 2
Dependent Claim
190 words
In waste material reducing and refining apparatus, the combination which includes: a waste material impact reducing and shredding unit having yieldable impact blocks and a series of moving hammers impacting the waste material against said impact blocks, conveyor means feeding waste material to said reducing and shredding unit, material classifier unit connected to said reducing and shredding unit to receive reduced and shredded waste material therefrom, said classifier unit having a plurality if discharge outlets, a first conveyor connected to one of said discharge outlets to move reduced and refined product, a second conveyor connected to another of said discharge outlets and to said feeding conveyor means for recirculating material back to said reducing and shredding unit, and a third conveyor connected to yet another of said discharge outlets to move residual waste material, said third conveyor includes waste material separation means, a receiver for the separated waste material, an inert gaseous atmosphere generating means connected in a closed circuit through said reducing and shredding unit to establish an inert atmosphere in said unit, and means delivering the waste material from said receiver to said generating unit for consumption therein.
Claim 3
Dependent Claim
28 words
In the apparatus set forth in claim 1, said classifier unit including means to classify magnetic and nonmagnetic waste material and means to classify waste material by size.
Claim 4
Dependent Claim
46 words
In the apparatus set forth in claim 1, a collector unit connected to said reducing and shredding unit remote from said generator unit, and conduit means connecting said generator and collector units to establish a substantially closed inert gas-circulating system through said reducing and shredding unit.
Claim 5
Dependent Claim
157 words
In apparatus to produce desired product and discard material from waste material, means to convey waste material in a circuit from waste material, means to convey waste material in a circuit from a waste material inlet through a plurality of processing units; one of said units comprising a reducing and shredding mill having spaced impact blocks, a reversible hammer rotor therebetween, a waste material inlet opening to said rotor and a product outlet opening away from said rotor; another of said units comprising a product classifier having two stages of magnetic separators and an intervening product sizer; conveyor means connecting the product outlet of said mill and said another unit and connecting said product sizer of said another unit to said waste material inlet of said one unit, whereby waste material of a predetermined size is recirculated; and other conveyor means connected to said another unit to receive sized material and move it away from he apparatus.
Claim 6
Dependent Claim
157 words
In apparatus to produce desired product and discard material from waste material, means to convey waste material in a circuit from waste material, means to convey waste material in a circuit from a waste material inlet through a plurality of processing units; one of said units comprising a reducing and shredding mill having spaced impact blocks, a reversible hammer rotor therebetween, a waste material inlet opening to said rotor and a product outlet opening away from said rotor; another of said units comprising a product classifier having two stages of magnetic separators and an intervening product sizer; conveyor means connecting the product outlet of said mill and said another unit and connecting said product sizer of said another unit to said waste material inlet of said one unit, whereby waste material of a predetermined size is recirculated; and other conveyor means connected to said another unit to receive sized material and move it away from he apparatus.
Claim 7
Dependent Claim
34 words
The apparatus set forth in claim 4 wherein said other conveyor means is connected to said another unit adjacent one magnetic separation stagE and defines separate paths for moving desired product and discard material.
Claim 8
Dependent Claim
37 words
The apparatus set forth in claim 4 wherein inert gas generating and circulating means is connected across said one unit to condition the atmosphere therein as to temperature and oxygen content to substantially suppress explosion inducing conditions.
Claim 9
Dependent Claim
26 words
The apparatus set forth in claim 6 wherein said other conveyor means includes means to supply discarded material to said inert gas generator for consumption therein.
Claim 10
Dependent Claim
27 words
The apparatus set forth in claim 6 wherein said product sizer includes a deck having product passing openings and means selectively regulating the size of such openings.
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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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |