US3339399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct reading densitometer
Assignee: Rotron Manufacturing Co Inc
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Filing: 1964-02-04
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Granted: 1967-09-05
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Expires: 1984-02-04
Abstract
No abstract record available.
Inventors
- 👤 Albert B Hubbard
- 👤 Kenton D Mcmahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/30; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/06; C07D301/32; G01N9/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A DENSITOMETER FOR MEASURING THE DENSITY OF GAS IN AN ENCLOSURE COMPRISING IN COMBINATION SENSOR AND DRIVER HOUSINGS AND A COUPLNG MEANS: SAID SENSOR HOUSING INCLUDING AN IMPELLER CAVITY, AN IMPELLER IN SAID IMPELLER CAVITY, AN INTAKE PASSAGE TO SAID IMPELLER CAVITY, A DISCHARGE PASSAGE FROM SAID IMPELLER CAVITY, INTAKE AND DISCHARGE PIEZO CHAMBERS ADJACENT SAID INTAKE AND DISCHARGE PASSAGES RESPECTIVELY, FIRST AND SECOND PIEZO OPENINGS COMMUNICATING SAID INTAKE AND DISCHARGE PASSAGES WITH SAID INTAKE AND DISCHARGE PIEZO CHAMBERS RESPECTIVELY, MANOMETER CONNECTIONS TO SAID PIEZO CHAMBERS; SAID DRIVER HOUSING INCLUDING AN ELECTRICAL MOTOR FOR ROTATING SAID IMPELLER AT A PREDETERMINED SPEED; SAID COUPLING MEANS PROVIDING A CONNECTING INTAKE AND A CONNECTING DISCHARGE PASSAGE BETWEEN SAID ENCLOSURE AND SAID INTAKE AND DISCHARGE PASSAGES RESPECTIVELY; AN ANNULAR SPACE SURROUNDING SAID MOTOR AND FAN BLADES FORCING COOLING AIR THROUGH SAID ANNULAR SPACE, A PULLEY ASSEMBLY INTERPOSED BETWEEN SAID SENSOR AND DRIVER HOUSINGS, SAID FAN BLADES BEING SUPPORTED WITHIN SAID PULLEY ASSEMBLY, A PASSAGE
Claim 2
Dependent Claim
160 words
A DENSITOMETER FOR MEASURING THE DENSITY OF GAS IN AN ENCLOSURE COMPRISING IN COMBINATION SENSOR AND DRIVER HOUSINGS AND A COUPLNG MEANS: SAID SENSOR HOUSING INCLUDING AN IMPELLER CAVITY, AN IMPELLER IN SAID IMPELLER CAVITY, AN INTAKE PASSAGE TO SAID IMPELLER CAVITY, A DISCHARGE PASSAGE FROM SAID IMPELLER CAVITY, INTAKE AND DISCHARGE PIEZO CHAMBERS ADJACENT SAID INTAKE AND DISCHARGE PASSAGES RESPECTIVELY, FIRST AND SECOND PIEZO OPENINGS COMMUNICATING SAID INTAKE AND DISCHARGE PASSAGES WITH SAID INTAKE AND DISCHARGE PIEZO CHAMBERS RESPECTIVELY, MANOMETER CONNECTIONS TO SAID PIEZO CHAMBERS; SAID DRIVER HOUSING INCLUDING AN ELECTRICAL MOTOR FOR ROTATING SAID IMPELLER AT A PREDETERMINED SPEED; SAID COUPLING MEANS PROVIDING A CONNECTING INTAKE AND A CONNECTING DISCHARGE PASSAGE BETWEEN SAID ENCLOSURE AND SAID INTAKE AND DISCHARGE PASSAGES RESPECTIVELY; AN ANNULAR SPACE SURROUNDING SAID MOTOR AND FAN BLADES FORCING COOLING AIR THROUGH SAID ANNULAR SPACE, A PULLEY ASSEMBLY INTERPOSED BETWEEN SAID SENSOR AND DRIVER HOUSINGS, SAID FAN BLADES BEING SUPPORTED WITHIN SAID PULLEY ASSEMBLY, A PASSAGE
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |