US3605782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid mixing device
Assignee: Graymills Corp
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Filing: 1969-07-14
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Granted: 1971-09-20
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Expires: 1989-07-14
Abstract
Abstract A LIQUID MIXING DEVICE FOR MIXING AND MAINTAINING TWO OR MORE LIQUIDS TO A SELECTED SPECIFIC GRAVITY OF A MIXTURE OF THE LIQUIDS INCLUDING A TANK FOR HOLDING THE MIXTURE OF LIQUIDS. A HYDROMETER IS POSITIONED IN THE TANK, AND THE HYDROMETER IS CONNECTED TO A CONTROL DEVICE. THE CONTROL DEVICE IS IN TURN CONNECTED TO A VALVE WHICH CONTROLS THE FLOW OF ONE OF THE LIQUIDS INTO THE TANK HOLDING THE MIXTURE OF LIQUIDS, THEREBY REGULATING THE SPECIFIC GRAVITY OF THE MIXTURE IN THE TANK BY THE ADDITION OF ONE OF THE LIQUIDS.
Inventors
- 👤 Raymond Hollis
- 👤 Frank X Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:30
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/139; B; B41; B41F; B41F7/00; B41F7/20; B41F7/24; B41F7/32; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504; Y10T137/7287; Y10T137/7358; Y10T137/7368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |