Patent US3611673A successfully refreshed from Google Patents.
US3611673A
Expired / Lapsed
US
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Material volume sensing device
Assignee: Research Cottrell Inc
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Filing: 1969-05-19
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Granted: 1971-10-12
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Expires: 1989-05-19
Abstract
Abstract A DISCHARGE VOLUME SENSING DEVICE FOR A MATERIAL PROCESSING APPARATUS HAVING A RECIPROCAL FEEDING RAM. A MOVABLE MATERIAL RECEIVING SUPPORT IS BIASED TO A NORMAL POSITION AGAINST THE LOAD OF MATERIAL DISCHARGED THEREON AND IS DEFLECTED BY THE RAM WHEN THE VOLUME OF MATERIAL THEREON REACHES A PREDETERMINED LEVEL. DEFLECTION OF THE SUPPORT IS SENSED BY A SWITCH ASSOCIATED THEREWITH.
Inventors
- 👤 George A Carkhuff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:29
CPC Classifications
B; B65; B65B; B65B57/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |