Patent US4179221A successfully refreshed from Google Patents.
US4179221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plough-share-like mixing tool
Assignee: Gebrueder Loedige Maschinenbau GmbH
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Filing: 1978-06-13
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Granted: 1979-12-18
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Expires: 1998-06-13
Abstract
Abstract A plough-share like mixing tool for brushing the internal wall of a cylindrical mixer container is disclosed. The mixing tool is designed for attachment to the outer end of a radial arm and fixed on the shaft of a mixing mechanism rotatably mounted in the mixer. The reverse side of the mixing tool is designed to form a convexly curved envelope.
Inventors
- 👤 Roland Lucke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:43
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/072; B01F27/0726
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A plough-share-like mixing tool for a mixing mechanism rotatably mounted in a mixer with a cylindrical mixing container having dished boiler ends, which mixing tool is carried at the outer end of a radial arm adapted to be mounted to the shaft of a mixing mechanism and with the radial outer surfaces thereof brushing the internal wall of the mixing container, the radially outermost portion of said mixing tool being asymmetrical and forming a convexly curved envelope corresponding to the curvature of the internal surface of the dished boiler end, one section of said mixing tool being, in plan view, disposed on one side of said radial arm and being provided with an extension to penetrate into the cylindrical part of the container, the other section of said tool being, in plan view, disposed on the opposite side of said radial arm and provided with a shaving portion to produce a shaving action on a dished boiler end.
Claim 2
Dependent Claim
158 words
A plough-share-like mixing tool for a mixing mechanism rotatably mounted in a mixer with a cylindrical mixing container having dished boiler ends, which mixing tool is carried at the outer end of a radial arm adapted to be mounted to the shaft of a mixing mechanism and with the radial outer surfaces thereof brushing the internal wall of the mixing container, the radially outermost portion of said mixing tool being asymmetrical and forming a convexly curved envelope corresponding to the curvature of the internal surface of the dished boiler end, one section of said mixing tool being, in plan view, disposed on one side of said radial arm and being provided with an extension to penetrate into the cylindrical part of the container, the other section of said tool being, in plan view, disposed on the opposite side of said radial arm and provided with a shaving portion to produce a shaving action on a dished boiler end.
Claim 3
Dependent Claim
15 words
A mixing tool according to claim 1, wherein said mixing tool has concave lateral faces.
Claim 4
Dependent Claim
15 words
A mixing tool according to claim 1, wherein said mixing tool has convex lateral faces.
Claim 5
Dependent Claim
23 words
A mixing tool according to claim 1, wherein said mixing tool comprises two plate-like sections which are joined together at an obtuse angle.
Claim 6
Dependent Claim
41 words
A mixing tool according to claim 1, wherein said one section of said mixing tool forms a shaver which rises towards its outside edge and the other section falls towards its outside edge, when viewed from the front of the tool.
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) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |