Patent US3381855A successfully refreshed from Google Patents.
US3381855A
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Dispensing apparatus having fluid return stage
Assignee: Veeder Industries Inc
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Filing: 1966-12-22
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Granted: 1968-05-07
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Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/74; B67D7/741; B67D7/742; G; G05; G05D; G05D11/00; G05D11/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN AN APPARATUS FOR DISPENSING PRESELECTED BLENDS OF TWO FLUIDS HAVING A SEPARATE FLOW LINE FOR EACH FLUID AND A COMMON DISCHARGE NOZZLE IN COMMUNICATION THEREWITH, EACH FLOW LINE INCLUDING A PUMP AND A FLOW METER DOWNSTREAM OF THE PUMP, AND AN ADJUSTABLE PROPORTIONING VALVE OPERATED BY THE METERS FOR CONTROLLING THE DELIVERY OF EACH FLUID TO THE NOZZLE IN VARIABLE PROPORTIONS IN ACCORDANCE WITH A PREDETERMINED FLOW RATE RATION, THE IMPROVEMENT COMPRISING A FLUID RETURN STAGE IN COMMUNICATION WITH EACH FLOW LINE AND HAVING FLOW CONTROL MEANS FOR CLOSING OFF FLUID TO THE NOZZLE AND RETURNING THE SAME UPSTREAM OF THE PUMPS TO PERMIT ADJUSTMENT OF THE PROPORTIONING VALVE EFFECTING SAID PREDETERMINED FLOW RATE RATIO BEFORE FLUID IS DELIVERED TO THE NOZZLE IN A DISPENSING OPERATION.
Claim 2
Dependent Claim
127 words
IN AN APPARATUS FOR DISPENSING PRESELECTED BLENDS OF TWO FLUIDS HAVING A SEPARATE FLOW LINE FOR EACH FLUID AND A COMMON DISCHARGE NOZZLE IN COMMUNICATION THEREWITH, EACH FLOW LINE INCLUDING A PUMP AND A FLOW METER DOWNSTREAM OF THE PUMP, AND AN ADJUSTABLE PROPORTIONING VALVE OPERATED BY THE METERS FOR CONTROLLING THE DELIVERY OF EACH FLUID TO THE NOZZLE IN VARIABLE PROPORTIONS IN ACCORDANCE WITH A PREDETERMINED FLOW RATE RATION, THE IMPROVEMENT COMPRISING A FLUID RETURN STAGE IN COMMUNICATION WITH EACH FLOW LINE AND HAVING FLOW CONTROL MEANS FOR CLOSING OFF FLUID TO THE NOZZLE AND RETURNING THE SAME UPSTREAM OF THE PUMPS TO PERMIT ADJUSTMENT OF THE PROPORTIONING VALVE EFFECTING SAID PREDETERMINED FLOW RATE RATIO BEFORE FLUID IS DELIVERED TO THE NOZZLE IN A DISPENSING OPERATION.
References Cited (Backward Citations)
US2650003A
Cited
US3107032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |