US3674220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chipper shredder
Assignee: Omark Industries Inc
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Filing: 1970-12-07
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Granted: 1972-07-04
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Expires: 1990-12-07
Abstract
Abstract A chipping knife and shredder flails are mounted for rotation about a common axis. The chipping knife is mounted in radial alignment with and adjacent the center of axis and a hopper directs branches, etc. to be chipped into that central portion dominated by the chipping knife. The flails extend outside of the chipping knife and a second hopper directs material to be shredded into that area dominated by the flails.
Inventors
- 👤 Myron D Tupper
- 👤 Arvin A Hille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:05
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14; B02C13/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
A chipper shredder apparatus comprising a housing, a chipping and shredding assembly mounted for rotatable movement within the housing, drive means for rotatably driving said chipping and shredding assembly, said chipping and shredding assembly including a disc-like plate, said disc-like plate adapted for rotation on an axis passing through the center of the plate and perpendicular to the plane defined by the plate, a chipping knife mounted to the face of the plate, shredding blades mounted for rotation about the same axis and extending beyond the periphery of the plate, a first hopper mounted to the housing for directing material to be chipped through an opening in the housing to the face of the plate and into the pathway of the rotating chipping knife, and a second hopper mounted to the housing for directing material to be shredded through an opening in the housing outwardly of the periphery of the plate and into the pathway of the rotating shredding blades.
Claim 2
Dependent Claim
160 words
A chipper shredder apparatus comprising a housing, a chipping and shredding assembly mounted for rotatable movement within the housing, drive means for rotatably driving said chipping and shredding assembly, said chipping and shredding assembly including a disc-like plate, said disc-like plate adapted for rotation on an axis passing through the center of the plate and perpendicular to the plane defined by the plate, a chipping knife mounted to the face of the plate, shredding blades mounted for rotation about the same axis and extending beyond the periphery of the plate, a first hopper mounted to the housing for directing material to be chipped through an opening in the housing to the face of the plate and into the pathway of the rotating chipping knife, and a second hopper mounted to the housing for directing material to be shredded through an opening in the housing outwardly of the periphery of the plate and into the pathway of the rotating shredding blades.
Claim 3
Dependent Claim
45 words
A chipper shredder apparatus as defined in claim 1 wherein the chipping and shredding assembly is rotated on a substantially vertical axis, and said hoppers both being adapted to feed material gravitationally into the top of the housing substantially normal to the plane of rotation.
Claim 4
Dependent Claim
39 words
A chipper shredder apparatus as defined in claim 2 wherein the flailing blades are freely pivoted on the disc-like plate and said housing including a shearing anvil adjustably mounted for close adjustment to cutting edge of the chipping knife.
Claim 5
Dependent Claim
62 words
A chipper shredder apparatus as defined in claim 3 wherein the chipping and shredding assembly includes a second plate below and in spaced parallel relation to the disc-like plate, said flailing blades being pivoted on pins held between the two plates, at least one of said flailing blades pivoted at a height between the plates different than other of said flailing blades.
Claim 6
Dependent Claim
37 words
A chipper shredder apparatus as defined in claim 4 wherein at least one of the flailing blades includes a projecting portion projected upwardly from the blade to facilitate feeding of material from the hopper into the housing.
Claim 7
Dependent Claim
80 words
A chipper shredder apparatus as defined in claim 5 wherein a plurality of said pins are located symmetrically around the periphery of the disc-like plate, at least two of the flailing blades rotating in a plane immediately adjacent the top plate, at least two of the flailing blades rotating in a second plane midway between the disc-like plate and bottom plate, and at least two of the flailing blades rotating in a third plane immediately adjacent to the bottom plate.
Claim 8
Dependent Claim
103 words
A chipper shredder apparatus as defined in claim 1 wherein the housing is cylindrical shaped with a cylindrical side wall, said chipping and shredding assembly mounted for rotation about an axis parallel to and substantially common with the axis of the cylindrical side wall whereby material within the housing is thrown by centrifugal force around the cylindrical side wall, a discharge opening in said side wall for ejecting such material, and deflectors on the side wall projecting into the housing between the rotating flailing blades, said deflectors placed relative to the discharge opening to limit the particle size of the material being discharged.
Claim 9
Dependent Claim
43 words
A chipper shredder apparatus as defined in claim 7 including a discharge tube that receives material from the discharge opening, and an open bottomed trough with an angular end wall connected to the discharge tube to deflect the material downwardly to a receptacle.
Claim 10
Dependent Claim
25 words
A chipper shredder apparatus as defined in claim 1 wherein said chipping and shredding assembly is provided with one chipping knife for maximum chipping action.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |