Patent US4142688A successfully refreshed from Google Patents.
US4142688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling waste including rubber tires
Assignee: Individual
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Filing: 1977-08-24
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Granted: 1979-03-06
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Expires: 1997-08-24
Abstract
Abstract Waste such as combustible trash and prime garbage is mixed with rubber tires and shredded together to produce a compacted and combustible output product which can be used as a fuel or incinerated for further compacting. The apparatus involves interengaging rotary feeder-cutter wheels mounted on counterrotating shafts to pull materials through a feed path while shredding with the aid of shredder blades interspersed between the wheels. Feeding, mixing and conveying techniques through one or more shredder stages provide for attainment of high speed feed rates and handling of some degree solid debris such as steel belts in tires.
Inventors
- 👤 Albert O. Johnson
- 👤 William E. Holiman
- 👤 Stephen D. Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:42
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/06; B02C18/14; B02C18/142; B02C18/16; B02C18/18; B02C18/182; B29; B29B; B29B17/00; B29B17/04; B29B17/0412; B02C2018/147; B02C2201/00; B02C2201/04; B29B2017/0094; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S241/00; Y10S241/31; Y10S241/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
Apparatus for shredding a variety of waste materials comprising in combination, a set of interengaging counter-rotating wheels spaced apart on two parallel shafts wherein selected wheels have spaced teeth extending beyond the wheel circumference wherein the teeth comprise triangular shaped pieces affixed to the sides of said selected wheels by one apex and having two apices extending beyond the circumference of the wheels.
Claim 2
Dependent Claim
63 words
Apparatus for shredding a variety of waste materials comprising in combination, a set of interengaging counter-rotating wheels spaced apart on two parallel shafts wherein selected wheels have spaced teeth extending beyond the wheel circumference wherein the teeth comprise triangular shaped pieces affixed to the sides of said selected wheels by one apex and having two apices extending beyond the circumference of the wheels.
Claim 3
Dependent Claim
26 words
Apparatus as defined in claim 1 comprising a funnel shaped storage bin hopper storing materials and feeding them by gravity into contact with the interengaged wheels.
Claim 4
Dependent Claim
31 words
Apparatus as defined in claim 1 comprising a set of two input conveyors adapted to feed diverse materials into said apparatus, and means changing the relative speeds of said two conveyors.
Claim 5
Independent Claim
89 words
An apparatus for shredding a variety of waste materials comprising in combination, a set of interengaging counter-rotating wheels spaced apart on two parallel shafts wherein selected ones of the rotating wheels have spaced teeth extending beyond the wheel circumference, a set of two elongated rectangular plate shredder members angularly disposed in the space between the wheels and pivotable about a common pivot point, and a mechanism coupled to at least one of the members remote from the pivot point permitting selectable change of relative position of said two members.
Claim 6
Independent Claim
89 words
An apparatus for shredding a variety of waste materials comprising in combination, a set of interengaging counter-rotating wheels spaced apart on two parallel shafts wherein selected ones of the rotating wheels have spaced teeth extending beyond the wheel circumference, a set of two elongated rectangular plate shredder members angularly disposed in the space between the wheels and pivotable about a common pivot point, and a mechanism coupled to at least one of the members remote from the pivot point permitting selectable change of relative position of said two members.
Claim 7
Dependent Claim
45 words
Apparatus as defined in claim 4 wherein said mechanism includes means adjusting each of said members remote from the pivot point in a direction perpendicular to the two shafts thereby changing the lateral position of said members relative to the axis of said shafts .
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |