Patent US4120460A successfully refreshed from Google Patents.
US4120460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disintegrating appliance
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1977-06-03
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Granted: 1978-10-17
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Expires: 1997-06-03
Abstract
Abstract An upright container having an open top end contains a rotor disc, which is mounted for rotation on a vertical axis and spaced below said open top end and has a periphery which extends close to the inside surface of said container. A plurality of cutting teeth are mounted on said disc and disposed at its periphery. At least two radial ribs are mounted on the top of said disc.
Inventors
- 👤 Helmuth Bacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:17
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/04; B29B17/0412; B02; B02C; B02C18/00; B02C18/06; B02C18/08; B02C18/086; B02C18/12; B02C18/16; B02C18/18; B29B2017/0424; B29B2017/048; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
An appliance for disintegrating synthetic thermoplastic waste material, comprising (a) an upright container having an open top for receiving the waste material and an open bottom, (b) a rotor disc mounted in the open bottom of the container for rotation in a horizontal plane about a vertical axis, (1) the container having an inside surface defining the open bottom and the rotor disc having a periphery extending close to the inside surface, (c) a plurality of cutting teeth mounted on the rotor disc and disposed at the periphery thereof, (1) each cutting tooth having a cutting edge extending in a horizontal plane, (d) a like plurality of radial ribs mounted on the rotor disc and projecting upwardly therefrom, (1) each of the ribs being associated with a respective one of the cutting teeth and leading thereto, and (2) the ribs being flush with the associated teeth in the direction of rotation of the rotor disc, and (e) shim means mounted detachably between the rotor disc and each of the ribs and of the cutting teeth for adjusting the height of the ribs and teeth.
Claim 2
Dependent Claim
184 words
An appliance for disintegrating synthetic thermoplastic waste material, comprising (a) an upright container having an open top for receiving the waste material and an open bottom, (b) a rotor disc mounted in the open bottom of the container for rotation in a horizontal plane about a vertical axis, (1) the container having an inside surface defining the open bottom and the rotor disc having a periphery extending close to the inside surface, (c) a plurality of cutting teeth mounted on the rotor disc and disposed at the periphery thereof, (1) each cutting tooth having a cutting edge extending in a horizontal plane, (d) a like plurality of radial ribs mounted on the rotor disc and projecting upwardly therefrom, (1) each of the ribs being associated with a respective one of the cutting teeth and leading thereto, and (2) the ribs being flush with the associated teeth in the direction of rotation of the rotor disc, and (e) shim means mounted detachably between the rotor disc and each of the ribs and of the cutting teeth for adjusting the height of the ribs and teeth.
Claim 3
Dependent Claim
30 words
The disintegrating appliance of claim 1, wherein the shim means comprises a plurality of shims, the shims, the ribs and the cutting teeth being mounted detachably on the rotor disc.
References Cited (Backward Citations)
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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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |