US3970255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid waste shredder
Assignee: Pangborn Corp
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Filing: 1974-08-15
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Granted: 1976-07-20
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Expires: 1994-08-15
Abstract
Abstract A solid waste shredder provided with rotating vanes for inducing a flow of air and/or solid waste through the shredder is particularly useful as a shredder for municipal and industrial trash and other solid waste prior to trash classification, pyrolysis, and landfill operations.
Inventors
- 👤 Harry C. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:22
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/26; B02C13/286
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A solid waste shredder comprising a casing having an inlet adjacent a top thereof and an outlet adjacent a bottom thereof for passage of solid waste into and through said casing, shredding means disposed within said casing for shredding said solid waste as it passes therethrough, and inducer means associated with said casing for impelling said solid waste downwardly toward said outlet, said induce means being comprised of vane means and motor means for rotating said vane means for creating a pressure head which impels said solid waste toward said outlet.
Claim 2
Dependent Claim
91 words
A solid waste shredder comprising a casing having an inlet adjacent a top thereof and an outlet adjacent a bottom thereof for passage of solid waste into and through said casing, shredding means disposed within said casing for shredding said solid waste as it passes therethrough, and inducer means associated with said casing for impelling said solid waste downwardly toward said outlet, said induce means being comprised of vane means and motor means for rotating said vane means for creating a pressure head which impels said solid waste toward said outlet.
Claim 3
Dependent Claim
31 words
A solid waste shredder as defined in claim 1 wherein said shredder includes a shaft vertically disposed within said casing, and mounting means for fixing said vane means to said shaft.
Claim 4
Dependent Claim
69 words
A solid waste shredder as defined in claim 2 including means mounting said shaft for rotation within said casing, drive means connecting said motor means to said shaft for rotating said shaft and said vane means; a cap member, means mounting said cap member for rotation within said casing, said cap member being shaped to slope downwardly and outwardly, and means mounting said vane means on said cap member.
Claim 5
Dependent Claim
102 words
A solid waste shredder comprising a casing having an inlet and an outlet for passage of solid material into and through said casing, means disposed within said casing for masticating said solid waste, and inducer means for acting on said solid waste and causing a flow of solid waste through said casing, said inducer means including a cap member and at least one vane, motor means connected to said cap member for rotating said cap member about an axis thereof, and adjustable mounting means for mounting said vane on said cap member and for changing the angle of attack of said vane.
Claim 6
Dependent Claim
102 words
A solid waste shredder comprising a casing having an inlet and an outlet for passage of solid material into and through said casing, means disposed within said casing for masticating said solid waste, and inducer means for acting on said solid waste and causing a flow of solid waste through said casing, said inducer means including a cap member and at least one vane, motor means connected to said cap member for rotating said cap member about an axis thereof, and adjustable mounting means for mounting said vane on said cap member and for changing the angle of attack of said vane.
Claim 7
Dependent Claim
43 words
A solid waste shredder as defined in claim 4 wherein said inducer means is located adjacent said inlet said inlet means including a receiving chamber for said solid waste and means defining a reduced passageway from said receiving chamber and surrounding said vane.
Claim 8
Dependent Claim
50 words
A solid waste shredder as defined in claim 4 wherein said adjustable mounting means is comprised of elongated slot means formed in at least one of said cap member and said vane, and threaded fastener means disposed within said slot means and fixedly securing said vane to said cap member.
References Cited (Backward Citations)
US3851829A
Cited
US3868064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |