Patent US3774852A successfully refreshed from Google Patents.
US3774852A
Expired / Lapsed
US
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Method of destructing waste and an apparatus for carrying out said method
Assignee: Anderstorps Werkstads AB
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Filing: 1971-05-06
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Granted: 1973-11-27
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Expires: 1991-05-06
Abstract
Abstract A method of destruction of waste and a destructor for carrying out said method, in which the collected waste is compressed by a piston in a collecting room, and pressed towards a rotating, grinding disc provided with cutting edges which disintegrates the waste while it is still under pressure, and throws the disintegrated waste out through an outlet opening where disinfectant is added and the waste is collected for utilization as filling material or for manufacturing of bricks or briquettes.
Inventors
- 👤 K Edlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:35
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/06; B02C18/16; B02C18/22; B02C18/2225; B02C18/2233; B09; B09B; B09B3/00; B09B3/30; B09B3/32; B09B3/35; B09B2101/00; B09B2101/65
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A method for destructing waste in an apparatus having a chamber with an opening, a rotatable horizontal grinding disc at the bottom of the chamber, a vertically movable piston device at the top of the chamber and a displaceable cylinder surrounding the piston device, said method comprising the steps of placing the wastE through the opening in the chamber between the piston and the disc, displacing the cylinder downwardly to contact the disc and cover the opening, reducing the volume of the waste in the chamber by compressing the same upon movement of the piston toward the disc, raising the cylinder to provide a slit between the disc and the cylinder, then disintegrating and pulverizing the reduced volume waste by rotating the horizontal grinding disc while simultaneously maintaining pressure on the compressed waste, and removing the disintegrated waste from the chamber.
Claim 2
Independent Claim
141 words
A method for destructing waste in an apparatus having a chamber with an opening, a rotatable horizontal grinding disc at the bottom of the chamber, a vertically movable piston device at the top of the chamber and a displaceable cylinder surrounding the piston device, said method comprising the steps of placing the wastE through the opening in the chamber between the piston and the disc, displacing the cylinder downwardly to contact the disc and cover the opening, reducing the volume of the waste in the chamber by compressing the same upon movement of the piston toward the disc, raising the cylinder to provide a slit between the disc and the cylinder, then disintegrating and pulverizing the reduced volume waste by rotating the horizontal grinding disc while simultaneously maintaining pressure on the compressed waste, and removing the disintegrated waste from the chamber.
Claim 3
Independent Claim
199 words
An apparatus for destructing waste comprising, a chamber having an opening in the side thereof for receiving the waste, a substantially horizontal rotatable grinding disc forming the bottom of the chamber, a piston device movable longitudinally within the chamber from the top thereof to a position adjacent the grinding disc, the piston device having a head part of substantially the same radial dimension as that of the chamber, the upper grinding surface of the grinding disc having a generally concave depressed area with a planar peripheral area, a plurality of cutting edges provided on the concave and planar areas of the disc, the head part of the piston device being of generally convex configuration for mating disposition with the disc when the piston device has been moved proximate the disc, the head part of the piston device having radially disposed ribs provided thereon, and control means to sequentially control operation of the piston device and the grinding disc such that the disc will not rotate until the waste is first compressed in the chamber by movement of the piston device toward the disc whereupon the disc will rotate to disintegrate the waste while pressure is maintained on the waste.
Claim 4
Independent Claim
199 words
An apparatus for destructing waste comprising, a chamber having an opening in the side thereof for receiving the waste, a substantially horizontal rotatable grinding disc forming the bottom of the chamber, a piston device movable longitudinally within the chamber from the top thereof to a position adjacent the grinding disc, the piston device having a head part of substantially the same radial dimension as that of the chamber, the upper grinding surface of the grinding disc having a generally concave depressed area with a planar peripheral area, a plurality of cutting edges provided on the concave and planar areas of the disc, the head part of the piston device being of generally convex configuration for mating disposition with the disc when the piston device has been moved proximate the disc, the head part of the piston device having radially disposed ribs provided thereon, and control means to sequentially control operation of the piston device and the grinding disc such that the disc will not rotate until the waste is first compressed in the chamber by movement of the piston device toward the disc whereupon the disc will rotate to disintegrate the waste while pressure is maintained on the waste.
Claim 5
Dependent Claim
52 words
An apparatus as claimed in claim 2 including a displaceable cylinder surrounding the head part of the piston device and movable longitudinally within the chamber, the cylinder having radially disposed ribs positioned about the circumferential edge thereof for cooperation with the cutting edges provided on the planar areas of the grinding disc.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |