US3376877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moist feed mix air permeability control
Assignee: Bethlehem Steel Corp
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Filing: 1966-05-09
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Granted: 1968-04-09
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Lloyd V Fegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
CONDITION-RESPONSIVE APPARATUS FOR CONTROLLING THE AIR PERMEABILITY OF A FEED MIX OF MOVABLE PARTICULATE MATERIALS SUBJECT TO TREATMENT BY A MOISTURE ADDITION DEVICE, SAID MIX HAVING ELECTRICAL IMPEDANCE EXCURSIONS CORRESPONDING TO PHYSICAL VARIATIONS IN PROCESSING CONDITIONS, SAID APPARATUS COMPRISING: IMPEDANCE-RESPONSIVE MEASURING MEANS FOR PRODUCING A PROPORTIONAL CONTROL SIGNAL IN RELATION TO THE IMPEDANCE OF A MOVABLE BED OF FEED MIX DETECTED DOWNSTREAM OF THE MOISTURE ADDITION DEVICE, SAID MEASURING MEANS INCLUDING COMPENSATING MEANS FOR OFFSETTING THE EFFECTS ON DETECTED IMPEDANCE OF VARIATIONS IN MIX TEMPERATURE AND THE CONDUCTIVITY OF AT LEAST ONE MIX INGREDIENT;
Claim 2
Dependent Claim
94 words
CONDITION-RESPONSIVE APPARATUS FOR CONTROLLING THE AIR PERMEABILITY OF A FEED MIX OF MOVABLE PARTICULATE MATERIALS SUBJECT TO TREATMENT BY A MOISTURE ADDITION DEVICE, SAID MIX HAVING ELECTRICAL IMPEDANCE EXCURSIONS CORRESPONDING TO PHYSICAL VARIATIONS IN PROCESSING CONDITIONS, SAID APPARATUS COMPRISING: IMPEDANCE-RESPONSIVE MEASURING MEANS FOR PRODUCING A PROPORTIONAL CONTROL SIGNAL IN RELATION TO THE IMPEDANCE OF A MOVABLE BED OF FEED MIX DETECTED DOWNSTREAM OF THE MOISTURE ADDITION DEVICE, SAID MEASURING MEANS INCLUDING COMPENSATING MEANS FOR OFFSETTING THE EFFECTS ON DETECTED IMPEDANCE OF VARIATIONS IN MIX TEMPERATURE AND THE CONDUCTIVITY OF AT LEAST ONE MIX INGREDIENT;
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |