Patent US3446332A successfully refreshed from Google Patents.
US3446332A
Expired / Lapsed
US
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Steep conveyor installation
Assignee: Beteiligungs und Patentverwaltungs GmbH
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Filing: 1967-06-08
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Granted: 1969-05-27
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Expires: 1987-06-08
Abstract
Abstract 1,119,627. Endless conveyers. BETEILIGUNGSUND PATENTVERWALTUNGS G.m.b.H. 10 May, 1967 [29 Oct., 1966], No. 21796/67. Heading B8A. A load 4 is carried vertically upwards between two endless conveyer belts each of which comprises a layer of foam plastic 2 on the belt proper 1. Cavities 3 are disposed in the foam plastic 2, in the central area of the belt only thereby causing the formation of sealing walls 5. On one of the two belts, the cavities 3 may be disposed across the whole width of the belt, or may be entirely dispensed with.
Inventors
- 👤 Gert Bechtloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/10; B65G15/12; B65G15/14; B65G15/30; B65G15/32; B65G15/34; B65G15/42; B65G2201/00; B65G2201/04; B65G2207/00; B65G2207/42; B65G2812/00; B65G2812/01; B65G2812/016; B65G2812/018
Claims Analysis
Total Claims: 0
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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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |