US2717078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic density regulator
Assignee: McNally Pittsburg Manufacturing Corp
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Filing: 1954-03-08
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Granted: 1955-09-06
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Cass B Levi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:01
CPC Classifications
B; B03; B03B; B03B13/00; B03B13/005; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2577
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN APPARATUS OF AUTOMATICALLY REGULATING THE DENSITY OF A LIQUID SUSPENSION COMPRISING ULTRA-FINE SOLIDS IN WATER, THE COMBINATION INCLUDING A TESTING VESSEL, A BALANCE BEAM, AN HYDROMETER SUSPENSION FROM ONE END OF THE BALANCE BEAM AND HAVING LOCATION IN THE TESTING VESSEL; INDUCTANCE COILS ASSOCIATED WITH THE OTHER END OF THE BALANCE BEAM IN A MANNER WHEREBY THE IMPEDANCE OF THE COILS IF BALANCED ONLY WHEN THE BEAM IS DISPOSED IN A HORIZONTAL NEUTRAL POSITION, MEANS CONTINUOUSLY DELIVERING A QUANTITY OF LIQUID SUSPENSION TO THE TESTING VESSEL TO SUBMERGE THE HYDROMETER THEREIN AND EFFECT MOVEMENT OF THE BALANCE BEAM AS THE DENSITY OF THE LIQUID SUSPENSION MAY VARY, AND OTHER MEANS RESPONSIVE TO THE BALANCED AND UNBALANCED CONDITIONS OF SAID INDUCTANCE COILS FOR DIVERTING THE LIQUID SUSPENSION DELIVERED THERETO TO A BATH CIRCUIT WHEN THE SAME HAS THE CORRECT DENSITY OR A HIGHER DENSITY, AND FOR DIVERTING THE LIQUID SUSPENSION TO A RETURN CIRCUIT FOR THICKENING WHEN THE DENSITY OF THE SAME IS BELOW THE CORRECT DENSITY.
Claim 2
Dependent Claim
167 words
IN APPARATUS OF AUTOMATICALLY REGULATING THE DENSITY OF A LIQUID SUSPENSION COMPRISING ULTRA-FINE SOLIDS IN WATER, THE COMBINATION INCLUDING A TESTING VESSEL, A BALANCE BEAM, AN HYDROMETER SUSPENSION FROM ONE END OF THE BALANCE BEAM AND HAVING LOCATION IN THE TESTING VESSEL; INDUCTANCE COILS ASSOCIATED WITH THE OTHER END OF THE BALANCE BEAM IN A MANNER WHEREBY THE IMPEDANCE OF THE COILS IF BALANCED ONLY WHEN THE BEAM IS DISPOSED IN A HORIZONTAL NEUTRAL POSITION, MEANS CONTINUOUSLY DELIVERING A QUANTITY OF LIQUID SUSPENSION TO THE TESTING VESSEL TO SUBMERGE THE HYDROMETER THEREIN AND EFFECT MOVEMENT OF THE BALANCE BEAM AS THE DENSITY OF THE LIQUID SUSPENSION MAY VARY, AND OTHER MEANS RESPONSIVE TO THE BALANCED AND UNBALANCED CONDITIONS OF SAID INDUCTANCE COILS FOR DIVERTING THE LIQUID SUSPENSION DELIVERED THERETO TO A BATH CIRCUIT WHEN THE SAME HAS THE CORRECT DENSITY OR A HIGHER DENSITY, AND FOR DIVERTING THE LIQUID SUSPENSION TO A RETURN CIRCUIT FOR THICKENING WHEN THE DENSITY OF THE SAME IS BELOW THE CORRECT DENSITY.
References Cited (Backward Citations)
US2320519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |