Patent US3283957A successfully refreshed from Google Patents.
US3283957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid proportioning system
Assignee: Individual
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Filing: 1965-01-26
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Granted: 1966-11-08
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Expires: 1985-01-26
Abstract
No abstract record available.
Inventors
- 👤 Henderson William Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:23
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/74; B67D7/743; B01; B01F; B01F35/00; B01F35/80; B01F35/83; B01F35/831; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; B67D2007/745; B67D2007/748; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
APPARATUS FOR DISCHARGING LIQUID AND FOR INTRODUCING ADDITIVE INTO SAID LIQUID IN CONTROLLED PROPORTION WHICH COMPRISES, A LIQUID FLOW LINE, METERING MEANS FOR SAID ADDITIVE FOR SUPPLYING ADDITIVE TO SAID LIQUID IN A CHOSEN PROPORTION OF FLOW OF SAID LIQUID IN SAID FLOW LINE, MEANS FOR SUPPLYING LIQUID ADDITIVE UNDER PRESSURE TO SAID METERING MEANS, SAID METERING MEANS COMPRISING, A CYLINDER, A FLOATING PISTON IN SAID CYLINDER, FIRST AND SECOND VALVE FOR RESPECTIVELY PASSING ADDITIVE INTO AND FROM SAID CYLINDER ON ONE SIDE OF SAID PISTON, THIRD AND FOURTH VALVES FOR RESPECTIVELY PASSING ADDITIVE INTO AND FROM SAID CYLINDER ON THE OTHER SIDE OF SAID PISTON, MEANS FOR OPENING SAID FIRST AND FOURTH VALVES AND SAID SECOND AND THIRD VALVES ALTERNATELY FOR PASSING ADDITIVE TO AND FROM SAID METERING MEANS IN ACCORDANCE WITH LIQUID FLOW IN SAID FLOW LINE, MEANS FOR LEADING METERED ADDITIVE FROM SAID METERING MEANS INTO SAID LIQUID, ROUTING MEANS FOR LIQUID IN SAID FLOW LINE, AND MEANS FOR ENERGIZING SAID FIRST AND FOURTH AND SAID SECOND AND THIRD VALVE OPENING MEANS IN ACCORDANCE WITH THE SETTING OF SAID ROUTING MEANS.
Claim 2
Dependent Claim
184 words
APPARATUS FOR DISCHARGING LIQUID AND FOR INTRODUCING ADDITIVE INTO SAID LIQUID IN CONTROLLED PROPORTION WHICH COMPRISES, A LIQUID FLOW LINE, METERING MEANS FOR SAID ADDITIVE FOR SUPPLYING ADDITIVE TO SAID LIQUID IN A CHOSEN PROPORTION OF FLOW OF SAID LIQUID IN SAID FLOW LINE, MEANS FOR SUPPLYING LIQUID ADDITIVE UNDER PRESSURE TO SAID METERING MEANS, SAID METERING MEANS COMPRISING, A CYLINDER, A FLOATING PISTON IN SAID CYLINDER, FIRST AND SECOND VALVE FOR RESPECTIVELY PASSING ADDITIVE INTO AND FROM SAID CYLINDER ON ONE SIDE OF SAID PISTON, THIRD AND FOURTH VALVES FOR RESPECTIVELY PASSING ADDITIVE INTO AND FROM SAID CYLINDER ON THE OTHER SIDE OF SAID PISTON, MEANS FOR OPENING SAID FIRST AND FOURTH VALVES AND SAID SECOND AND THIRD VALVES ALTERNATELY FOR PASSING ADDITIVE TO AND FROM SAID METERING MEANS IN ACCORDANCE WITH LIQUID FLOW IN SAID FLOW LINE, MEANS FOR LEADING METERED ADDITIVE FROM SAID METERING MEANS INTO SAID LIQUID, ROUTING MEANS FOR LIQUID IN SAID FLOW LINE, AND MEANS FOR ENERGIZING SAID FIRST AND FOURTH AND SAID SECOND AND THIRD VALVE OPENING MEANS IN ACCORDANCE WITH THE SETTING OF SAID ROUTING MEANS.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |